[COMMON][MARIADB] Upgrade Mariadb DB galera version

Mariadb DB Galera containers version is outdated and unmaintained. We
need them to move to a new image provider.
As new image provider is not compatible with our old templates, we
also update the templates (by reworking bitnami mariadb-galera chart).
An update of global mariadb image is also done in order to match mariadb
galera version.

Issue-ID: OOM-1720
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: Ib9976227759e90022183d4f37fc655143be4d6ac

25 files changed, 1075 insertions, 1070 deletions

diff --git a/kubernetes/common/mariadb-galera/.helmignore b/kubernetes/common/mariadb-galera/.helmignore
index f3d010c5f7..f0c1319444 100644
--- a/kubernetes/common/mariadb-galera/.helmignore
+++ b/kubernetes/common/mariadb-galera/.helmignore
@@ -19,6 +19,3 @@
 .project
 .idea/
 *.tmproj
-
-# Unit tests folder
-tests
diff --git a/kubernetes/common/mariadb-galera/Chart.yaml b/kubernetes/common/mariadb-galera/Chart.yaml
index 0b4b3ba783..209c8c03e5 100644
--- a/kubernetes/common/mariadb-galera/Chart.yaml
+++ b/kubernetes/common/mariadb-galera/Chart.yaml
@@ -1,4 +1,5 @@
 # Copyright © 2018 Amdocs, Bell Canada
+# Copyright © 2020 Bitnami, Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/kubernetes/common/mariadb-galera/requirements.yaml b/kubernetes/common/mariadb-galera/requirements.yaml
index 2397316010..b378e5738b 100644
--- a/kubernetes/common/mariadb-galera/requirements.yaml
+++ b/kubernetes/common/mariadb-galera/requirements.yaml
@@ -1,4 +1,5 @@
 # Copyright © 2018 Amdocs, Bell Canada
+# Copyright © 2020 Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,6 +17,12 @@ dependencies:
   - name: common
     version: ~7.x-0
     repository: 'file://../common'
+  - name: readinessCheck
+    version: ~7.x-0
+    repository: 'file://../readinessCheck'
   - name: repositoryGenerator
     version: ~7.x-0
-    repository: 'file://../repositoryGenerator'
\ No newline at end of file
+    repository: 'file://../repositoryGenerator'
+  - name: serviceAccount
+    version: ~7.x-0
+    repository: 'file://../serviceAccount'
diff --git a/kubernetes/common/mariadb-galera/resources/config/configure-mysql.sh b/kubernetes/common/mariadb-galera/resources/config/configure-mysql.sh
deleted file mode 100755
index b354efe86c..0000000000
--- a/kubernetes/common/mariadb-galera/resources/config/configure-mysql.sh
+++ /dev/null
@@ -1,92 +0,0 @@
-#!/bin/bash
-{{/*
-#
-# Adfinis SyGroup AG
-# openshift-mariadb-galera: mysql setup script
-#
-*/}}
-
-set -eox pipefail
-
-echo 'Running mysql_install_db ...'
-mysql_install_db --datadir=/var/lib/mysql
-echo 'Finished mysql_install_db'
-
-mysqld --skip-networking --socket=/var/lib/mysql/mysql-init.sock --wsrep_on=OFF &
-pid="$!"
-
-mysql=( mysql --protocol=socket -uroot -hlocalhost --socket=/var/lib/mysql/mysql-init.sock )
-
-for i in {30..0}; do
-  if echo 'SELECT 1' | "${mysql[@]}" &> /dev/null; then
-    break
-  fi
-  echo 'MySQL init process in progress...'
-  sleep 1
-done
-if [ "$i" = 0 ]; then
-  echo >&2 'MySQL init process failed.'
-  exit 1
-fi
-
-if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
-	# sed is for https://bugs.mysql.com/bug.php?id=20545
-	mysql_tzinfo_to_sql /usr/share/zoneinfo | sed 's/Local time zone must be set--see zic manual page/FCTY/' | "${mysql[@]}" mysql
-fi
-
-prepare_password()
-{
-	echo "$1" | sed -e "s/'/\\\\'/g; s/\"/\\\\\"/g"
-}
-
-mysql_root_password=`prepare_password $MYSQL_ROOT_PASSWORD`
-# add MariaDB root user
-"${mysql[@]}" <<-EOSQL
--- What's done in this file shouldn't be replicated
---  or products like mysql-fabric won't work
-SET @@SESSION.SQL_LOG_BIN=0;
-
-DELETE FROM mysql.user ;
-CREATE USER 'root'@'%' IDENTIFIED BY '${mysql_root_password}' ;
-GRANT ALL ON *.* TO 'root'@'%' WITH GRANT OPTION ;
-DROP DATABASE IF EXISTS test ;
-FLUSH PRIVILEGES ;
-EOSQL
-
-# add root password for subsequent calls to mysql
-if [ ! -z "$MYSQL_ROOT_PASSWORD" ]; then
-	mysql+=( -p"${MYSQL_ROOT_PASSWORD}" )
-fi
-
-# add users require for Galera
-# TODO: make them somehow configurable
-"${mysql[@]}" <<-EOSQL
-CREATE USER 'xtrabackup_sst'@'localhost' IDENTIFIED BY 'xtrabackup_sst' ;
-GRANT RELOAD, LOCK TABLES, REPLICATION CLIENT ON *.* TO 'xtrabackup_sst'@'localhost' ;
-CREATE USER 'readinessProbe'@'localhost' IDENTIFIED BY 'readinessProbe';
-EOSQL
-
-if [ "$MYSQL_DATABASE" ]; then
-	echo "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;" | "${mysql[@]}"
-	mysql+=( "$MYSQL_DATABASE" )
-fi
-
-if [ "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
-	mysql_password=`prepare_password $MYSQL_PASSWORD`
-	echo "CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$mysql_password' ;" | "${mysql[@]}"
-
-	if [ "$MYSQL_DATABASE" ]; then
-		echo "GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;" | "${mysql[@]}"
-	fi
-
-	echo 'FLUSH PRIVILEGES ;' | "${mysql[@]}"
-fi
-
-if ! kill -s TERM "$pid" || ! wait "$pid"; then
-	echo >&2 'MySQL init process failed.'
-	exit 1
-fi
-
-echo
-echo 'MySQL init process done. Ready for start up.'
-echo
diff --git a/kubernetes/common/mariadb-galera/resources/create-deployment.yml b/kubernetes/common/mariadb-galera/resources/create-deployment.yml
deleted file mode 100644
index 0f6bb5929e..0000000000
--- a/kubernetes/common/mariadb-galera/resources/create-deployment.yml
+++ /dev/null
@@ -1,50 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata: {{- include "common.resourceMetadata" (dict "suffix" "upgrade-deployment" "dot" .) | nindent 4 }}
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app:  {{ include "common.fullname" . }}
-  template:
-    metadata:
-      labels:
-        app:  {{ include "common.fullname" . }}
-    spec:
-      containers:
-      - name: {{ include "common.name" . }}
-        image: {{ include "repositoryGenerator.dockerHubRepository" . }}/{{ .Values.image }}
-        ports:
-        - containerPort: {{ .Values.service.internalPort }}
-          name: {{ .Values.service.portName }}
-        - containerPort: {{ .Values.service.sstPort }}
-          name: {{ .Values.service.sstPortName }}
-        - containerPort: {{ .Values.service.replicationPort }}
-          name: {{ .Values.service.replicationName }}
-        - containerPort: {{ .Values.service.istPort }}
-          name: {{ .Values.service.istPortName }}
-        env:
-        - name: POD_NAMESPACE
-          valueFrom:
-                fieldRef:
-                  apiVersion: v1
-                  fieldPath: metadata.namespace
-        - name: MYSQL_USER
-          valueFrom:
-            secretKeyRef:
-              key: login
-              name: {{ include "common.fullname" . }}-temp-upgrade-usercred
-        - name: MYSQL_PASSWORD
-          valueFrom:
-            secretKeyRef:
-              key: password
-              name: {{ include "common.fullname" . }}-temp-upgrade-usercred
-        - name: MYSQL_DATABASE
-          value: {{ default "" .Values.config.mysqlDatabase | quote }}
-        - name: MYSQL_ROOT_PASSWORD
-          valueFrom:
-            secretKeyRef:
-              key: password
-              name: {{ include "common.fullname" . }}-temp-upgrade-root
-      subdomain: {{ .Values.service.name }}
-      hostname: {{ .Values.nameOverride }}-upgrade-deployment
diff --git a/kubernetes/common/mariadb-galera/resources/post-upgrade-script.sh b/kubernetes/common/mariadb-galera/resources/post-upgrade-script.sh
deleted file mode 100644
index ec09df3a86..0000000000
--- a/kubernetes/common/mariadb-galera/resources/post-upgrade-script.sh
+++ /dev/null
@@ -1,142 +0,0 @@
-#!/bin/bash
-
-TEMP_POD=$(kubectl get pod -n $NAMESPACE_ENV --selector \
-  app='{{ include "common.fullname" . }}' -o \
-  jsonpath='{.items[?(@.metadata.ownerReferences[].kind=="ReplicaSet")].metadata.name}')
-
-tmp_MYSQL_PASSWORD=$(echo -n $(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- printenv \
-  MYSQL_PASSWORD) | base64)
-
-tmp_ROOT_PASSWORD=$(echo -n $(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- printenv \
-  MYSQL_ROOT_PASSWORD) | base64)
-
-FLAG_EX_ROOT_SEC='{{ include "common.secret.getSecretNameFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .)) }}'
-
-FLAG_EX_SEC='{{ include "common.secret.getSecretNameFast" (dict "global" . "uid" (include "common.mariadb.secret.userCredentialsUID" .)) }}'
-
-kubectl patch secret $FLAG_EX_ROOT_SEC -p \
-  '{"data":{"password":"'"$tmp_ROOT_PASSWORD"'"}}'
-
-kubectl patch secret $FLAG_EX_SEC -p \
-  '{"data":{"password":"'"$tmp_MYSQL_PASSWORD"'"}}'
-
-MYSQL_USER=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- printenv MYSQL_USER)
-
-MYSQL_PASSWORD=$(echo -n $(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- printenv MYSQL_PASSWORD))
-
-MYSQL_ROOT_PASSWORD=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- printenv MYSQL_ROOT_PASSWORD)
-
-CURRENT_STS_REPLICA=$(kubectl get statefulsets -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }} -o jsonpath='{.status.replicas}')
-
-DEPLOYMENT_REPLICA=$(kubectl get deployment -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }}-upgrade-deployment -o \
-  jsonpath='{.status.replicas}')
-
-if [[ $CURRENT_STS_REPLICA == "0" ]]
-then
-  echo "Seems there was no upgrade of cluster and we will scale up cluster replicas back to $REPLICA_COUNT now"
-  kubectl scale statefulsets {{ include "common.fullname" . }} --replicas=$REPLICA_COUNT
-fi
-
-MY_REPLICA_NUMBER=$(kubectl get statefulsets -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }} -o jsonpath='{.status.replicas}')
-
-while [[ ! $MY_REPLICA_NUMBER == $REPLICA_COUNT ]]
-do
-    echo "The cluster is not scaled up to $REPLICA_COUNT yet. Please wait ..."
-    MY_REPLICA_NUMBER=$(kubectl get statefulsets -n $NAMESPACE_ENV \
-      {{ include "common.fullname" . }} -o jsonpath='{.status.replicas}')
-    echo "The current status of the cluster is $MY_REPLICA_NUMBER"
-    sleep 2
-    if [[ $MY_REPLICA_NUMBER == $REPLICA_COUNT ]]
-    then
-        break
-    fi
-done
-
-CLUSTER_NO=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- \
-  mysql --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-  -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_cluster_size';" | \
-  awk '{print $2}')
-
-CLUSTER_STATE=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- \
-  mysql --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-  -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_local_state_comment';" \
-  | awk '{print $2}')
-
-while [[ ! $CLUSTER_NO == $((REPLICA_COUNT+DEPLOYMENT_REPLICA)) ]] \
-   || [[ ! $CLUSTER_STATE == "Synced" ]]
-do
-    echo "$CLUSTER_NO and $CLUSTER_STATE"
-    CLUSTER_NO=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- mysql \
-      --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-      -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_cluster_size';" \
-      | awk '{print $2}')
-    CLUSTER_STATE=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- mysql \
-      --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-      -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_local_state_comment';" \
-      | awk '{print $2}')
-    sleep 2
-    if [[ $CLUSTER_NO == $((REPLICA_COUNT+DEPLOYMENT_REPLICA)) ]] \
-       && [[ $CLUSTER_STATE == "Synced" ]]
-    then
-        echo "The cluster has $CLUSTER_NO members and  $CLUSTER_STATE state."
-        break
-    fi
-done
-
-MYSQL_STATUS=$(kubectl exec -n $NAMESPACE_ENV {{ include "common.fullname" . }}-0 -- mysqladmin \
-  -uroot -p$MYSQL_ROOT_PASSWORD ping)
-
-while [[ ! $MYSQL_STATUS == "mysqld is alive" ]]
-do
-  echo "Mariadb deployment is not ready yet."
-  sleep 2
-  MYSQL_STATUS=$(kubectl exec -n $NAMESPACE_ENV {{ include "common.fullname" . }}-0 -- mysqladmin \
-  -uroot -p$MYSQL_ROOT_PASSWORD ping)
-  if [[ $MYSQL_STATUS == "mysqld is alive" ]]
-  then
-    echo "Mariadb deployment is ready and cluster size is $CLUSTER_NO"
-    break
-  fi
-done
-
-echo "Deleting upgrade deployment now"
-
-kubectl delete deployment -n $NAMESPACE_ENV {{ include "common.fullname" . }}-upgrade-deployment
-kubectl delete secret -n $NAMESPACE_ENV {{ include "common.fullname" . }}-temp-upgrade-root
-kubectl delete secret -n $NAMESPACE_ENV {{ include "common.fullname" . }}-temp-upgrade-usercred
-
-CLUSTER_NO=$(kubectl exec -n $NAMESPACE_ENV {{ include "common.fullname" . }}-0 -- \
-  mysql --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-  -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_cluster_size';" | \
-  awk '{print $2}')
-
-CLUSTER_STATE=$(kubectl exec -n $NAMESPACE_ENV {{ include "common.fullname" . }}-0 -- \
-  mysql --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-  -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_local_state_comment';" \
-  | awk '{print $2}')
-
-while [[ ! $CLUSTER_NO == $REPLICA_COUNT ]] \
-   || [[ ! $CLUSTER_STATE == "Synced" ]]
-do
-    echo "$CLUSTER_NO and $CLUSTER_STATE"
-    CLUSTER_NO=$(kubectl exec -n $NAMESPACE_ENV {{ include "common.fullname" . }}-0 -- mysql \
-      --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-      -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_cluster_size';" \
-      | awk '{print $2}')
-    CLUSTER_STATE=$(kubectl exec -n $NAMESPACE_ENV {{ include "common.fullname" . }}-0 -- mysql \
-      --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-      -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_local_state_comment';" \
-      | awk '{print $2}')
-    sleep 2
-    if [[ $CLUSTER_NO == $REPLICA_COUNT ]] \
-       && [[ $CLUSTER_STATE == "Synced" ]]
-    then
-        echo "The cluster has $CLUSTER_NO members and  $CLUSTER_STATE state."
-        break
-    fi
-done
-
-echo "The cluster upgrade is finished now"
diff --git a/kubernetes/common/mariadb-galera/resources/upgrade-scripts.sh b/kubernetes/common/mariadb-galera/resources/upgrade-scripts.sh
deleted file mode 100644
index ff44606e23..0000000000
--- a/kubernetes/common/mariadb-galera/resources/upgrade-scripts.sh
+++ /dev/null
@@ -1,101 +0,0 @@
-#!/bin/bash
-MYSQL_USER=$(kubectl exec -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }}-0 -- printenv MYSQL_USER)
-
-MYSQL_PASSWORD=$(kubectl exec -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }}-0 -- printenv MYSQL_PASSWORD)
-
-MYSQL_ROOT_PASSWORD=$(kubectl exec -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }}-0 -- printenv MYSQL_ROOT_PASSWORD)
-
-kubectl create secret generic \
-  '{{ include "common.fullname" . }}'-temp-upgrade-root \
-  --from-literal=password=$MYSQL_ROOT_PASSWORD
-
-kubectl create secret generic \
-  '{{ include "common.fullname" . }}'-temp-upgrade-usercred \
-  --from-literal=login=$MYSQL_USER --from-literal=password=$MYSQL_PASSWORD
-
-kubectl create -f /upgrade/create-deployment.yml
-
-TEMP_POD=$(kubectl get pod -n $NAMESPACE_ENV --selector \
-  app='{{ include "common.fullname" . }}' -o \
-  jsonpath='{.items[?(@.metadata.ownerReferences[].kind=="ReplicaSet")].metadata.name}')
-
-CLUSTER_NO=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- \
-  mysql --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-  -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_cluster_size';" | \
-  awk '{print $2}')
-
-CLUSTER_STATE=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- \
-  mysql --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-  -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_local_state_comment';" \
-  | awk '{print $2}')
-
-STS_REPLICA=$(kubectl get statefulsets -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }} -o jsonpath='{.status.replicas}')
-
-DEPLOYMENT_REPLICA=$(kubectl get deployment -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }}-upgrade-deployment -o \
-  jsonpath='{.status.replicas}')
-
-while [[ ! $CLUSTER_NO == $((STS_REPLICA+DEPLOYMENT_REPLICA)) ]] \
-   || [[ ! $CLUSTER_STATE == "Synced" ]]
-do
-    echo "$CLUSTER_NO and $CLUSTER_STATE"
-    CLUSTER_NO=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- mysql \
-      --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-      -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_cluster_size';" \
-      | awk '{print $2}')
-    CLUSTER_STATE=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- mysql \
-      --skip-column-names -h{{ $.Values.service.name }} -u$MYSQL_USER \
-      -p$MYSQL_PASSWORD -e "SHOW GLOBAL STATUS LIKE 'wsrep_local_state_comment';" \
-      | awk '{print $2}')
-    sleep 2
-    if [[ $CLUSTER_NO == $((STS_REPLICA+DEPLOYMENT_REPLICA)) ]] \
-       && [[ $CLUSTER_STATE == "Synced" ]]
-    then
-        echo "The cluster has $CLUSTER_NO members and  $CLUSTER_STATE state."
-        break
-    fi
-done
-
-MYSQL_STATUS=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- mysqladmin \
-  -uroot -p$MYSQL_ROOT_PASSWORD ping)
-
-while [[ ! $MYSQL_STATUS == "mysqld is alive" ]]
-do
-  echo "Mariadb deployment is not ready yet."
-  sleep 2
-  MYSQL_STATUS=$(kubectl exec -n $NAMESPACE_ENV $TEMP_POD -- mysqladmin \
-  -uroot -p$MYSQL_ROOT_PASSWORD ping)
-  if [[ $MYSQL_STATUS == "mysqld is alive" ]]
-  then
-    echo "Mariadb deployment is ready."
-    break
-  fi
-done
-
-kubectl scale statefulsets {{ include "common.fullname" . }} --replicas=0
-MY_REPLICA_NUMBER=$(kubectl get statefulsets -n $NAMESPACE_ENV \
-  {{ include "common.fullname" . }} -o jsonpath='{.status.replicas}')
-echo "The the cluster has $MY_REPLICA_NUMBER replicas."
-
-while [[ ! $MY_REPLICA_NUMBER == "0" ]]
-do
-    echo "The cluster is not scaled to 0 yet. Please wait ..."
-    MY_REPLICA_NUMBER=$(kubectl get statefulsets -n $NAMESPACE_ENV \
-      {{ include "common.fullname" . }} -o jsonpath='{.status.replicas}')
-    echo "The current status of the cluster is $MY_REPLICA_NUMBER"
-    sleep 2
-    if [[ $MY_REPLICA_NUMBER == "0" ]]
-    then
-        break
-    fi
-done
-
-for (( index=0; index<$STS_REPLICA; index+=1 ))
-do
-    kubectl delete pvc \
-    "{{ include "common.fullname" . }}-data-{{ include "common.fullname" . }}-$index"
-done
diff --git a/kubernetes/common/mariadb-galera/templates/NOTES.txt b/kubernetes/common/mariadb-galera/templates/NOTES.txt
index 96f2fd8c63..d6a9ac0079 100644
--- a/kubernetes/common/mariadb-galera/templates/NOTES.txt
+++ b/kubernetes/common/mariadb-galera/templates/NOTES.txt
@@ -1,18 +1,24 @@
+{{/*
 # Copyright © 2018 Amdocs, Bell Canada
+# Copyright © 2020 Bitnami, Orange
 #
-# This file is licensed under the CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# Full license text at https://creativecommons.org/licenses/by/4.0/legalcode
-
-MariaDB-Galera service can be accessed via port 3306 on the following DNS name from within your cluster:
-{{ include "common.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local
-
-To connect to your database:
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
 
-1. Run a pod that you can use as a client:
+** Please be patient while the chart is being deployed **
 
-    kubectl run {{ include "common.fullname" . }}-client --rm --tty -i --image mariadb --command -- bash
+Tip:
 
-2. Connect using the mysql cli, then provide your password:
-    $ mysql -h {{ include "common.fullname" . }} {{- if .Values.mysqlRootPassword }} -p {{ .Values.mysqlRootPassword }}{{- end -}}
+  Watch the deployment status using the command:
 
+    kubectl get sts -w --namespace {{ .Release.Namespace }} -l app.kubernetes.io/instance={{ .Release.Name }}
diff --git a/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml b/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
index 1c780179be..210fbd02ba 100644
--- a/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
+++ b/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
@@ -1,5 +1,6 @@
 {{/*
 # Copyright © 2019 Amdocs, Bell Canada, Samsung Electronics
+# Copyright © 2020 Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,17 +14,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 */}}
+
 {{- if .Values.backup.enabled }}
 apiVersion: batch/v1beta1
 kind: CronJob
 metadata:
   name: {{ include "common.fullname" . }}-backup
   namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.fullname" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    release: {{ include "common.release" . }}
-    heritage: {{ .Release.Service }}
+  labels: {{- include "common.labels" . | nindent 4 }}
 spec:
   schedule: {{ .Values.backup.cron | quote }}
   concurrencyPolicy: Forbid
@@ -32,141 +30,130 @@ spec:
     spec:
       template:
         spec:
+          serviceAccountName: {{ include "common.fullname" (dict "suffix" "read" "dot" . )}}
+          {{ include "common.podSecurityContext" . | indent 10 | trim}}
           restartPolicy: Never
-          initContainers:
-          - command:
-            - /app/ready.py
-            args:
-            - --container-name
-            - {{ include "common.name" . }}
-            env:
-            - name: NAMESPACE
-              valueFrom:
-                fieldRef:
-                  apiVersion: v1
-                  fieldPath: metadata.namespace
-            image: {{ include "repositoryGenerator.image.readiness" . }}
-            imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
-            name: {{ include "common.name" . }}-readiness
-          - name: mariadb-galera-backup-init
-            image: {{ include "repositoryGenerator.image.mariadb" . }}
-            imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
-            command:
-            - /bin/bash
-            - -c
-            - |
-              remove_dir(){
-                dirToRemove=$1
-                rm -rf $dirToRemove
-                echo "Failed" > /backup/backup.log
-                echo "Backup failed!!!"
-              }
+          initContainers: {{- include "common.readinessCheck.waitFor" . | nindent 12 }}
+            - name: mariadb-galera-backup-init
+              image: {{ include "repositoryGenerator.image.mariadb" . }}
+              imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+              {{ include "common.containerSecurityContext" . | indent 14 | trim }}
+              command:
+                - /bin/bash
+                - -c
+                - |
+                    remove_dir(){
+                      dirToRemove=$1
+                      rm -rf $dirToRemove
+                      echo "Failed" > /backup/backup.log
+                      echo "Backup failed!!!"
+                    }
 
-              target_dir=/backup/backup-`date +%s`
-              mkdir -p $target_dir
+                    target_dir=/backup/backup-`date +%s`
+                    mkdir -p $target_dir
 
-              mysqlhost={{ include "common.fullname" . }}-{{ sub .Values.replicaCount 1 }}.{{ .Values.service.name }}
+                    mysqlhost={{ include "common.servicename" . }}.{{ include "common.namespace" . }}
 
-              mariabackup --backup --target-dir=$target_dir --user=root --password=$DB_PASS --host=$mysqlhost
+                    mariabackup --backup --target-dir=$target_dir --user=root --password=$DB_PASS --host=$mysqlhost
 
-              ret_code=$?
-              if [ $ret_code -ne 0 ]; then
-                remove_dir $target_dir
-                exit 0
-              fi
+                    ret_code=$?
+                    if [ $ret_code -ne 0 ]; then
+                      remove_dir $target_dir
+                      exit 0
+                    fi
 
-              echo "Starting Backup Preparation!!!"
-              mariabackup --prepare --target-dir=$target_dir
-              ret_code=$?
-              if [ $ret_code -ne 0 ]; then
-                remove_dir $target_dir
-                exit 0
-              fi
-              echo "Success" > /backup/backup.log
-              echo "Backup Successful!!!"
-            env:
-            - name: DB_PASS
-              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 14}}
-            volumeMounts:
-            - name: backup-dir
-              mountPath: /backup
-            - name: db-data
-              mountPath: /var/lib/mysql
+                    echo "Starting Backup Preparation!!!"
+                    mariabackup --prepare --target-dir=$target_dir
+                    ret_code=$?
+                    if [ $ret_code -ne 0 ]; then
+                      remove_dir $target_dir
+                      exit 0
+                    fi
+                    echo "Success" > /backup/backup.log
+                    echo "Backup Successful!!!"
+              env:
+                - name: DB_PASS
+                  {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 18 }}
+              resources: {{ include "common.resources" . | nindent 12 }}
+              volumeMounts:
+                - name: backup-dir
+                  mountPath: /backup
           containers:
-          - name: mariadb-backup-validate
-            image: {{ include "repositoryGenerator.image.mariadb" . }}
-            imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
-            env:
-            - name: MYSQL_ROOT_PASSWORD
-              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 14}}
-            command:
-            - /bin/bash
-            - -c
-            - |
-              remove_dir(){
-                dirToRemove=$1
-                rm -rf $dirToRemove
-                echo "Validation Failed!!!";
-              }
+            - name: mariadb-backup-validate
+              image: {{ include "repositoryGenerator.image.mariadb" . }}
+              imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+              {{ include "common.containerSecurityContext" . | indent 14 | trim }}
+              env:
+                - name: MYSQL_ROOT_PASSWORD
+                  {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 18 }}
+              command:
+                - /bin/bash
+                - -c
+                - |
+                  remove_dir(){
+                    dirToRemove=$1
+                    rm -rf $dirToRemove
+                    echo "Validation Failed!!!";
+                  }
 
-              backup_result=`cat /backup/backup.log`
-              rm -rf /backup/backup.log
+                  backup_result=`cat /backup/backup.log`
+                  rm -rf /backup/backup.log
 
-              if [ "$backup_result" == "Failed" ]; then
-                echo "Backup Failed!!! So Validation Failed!!!";
-                exit 0
-              fi
+                  if [ "$backup_result" == "Failed" ]; then
+                    echo "Backup Failed!!! Validation Failed!!!";
+                    exit 0
+                  fi
 
-              target_dir=$(ls -td -- /backup/backup-* | head -n 1)
-              cp -Ra $target_dir/* /var/lib/mysql/
+                  target_dir=$(ls -td -- /backup/backup-* | head -n 1)
+                  cp -Ra $target_dir/* /var/lib/mysql/
 
-              if [ ! "$(ls -A /var/lib/mysql)" ]; then
-                remove_dir $target_dir
-                exit 0
-              fi
+                  if [ ! "$(ls -A /var/lib/mysql)" ]; then
+                    remove_dir $target_dir
+                    exit 0
+                  fi
 
-              /docker-entrypoint.sh mysqld &
+                  /docker-entrypoint.sh mysqld &
 
-              count=0
-              until mysql --user=root --password=$MYSQL_ROOT_PASSWORD  -e "SELECT 1";
-                do sleep 3;
-                count=`expr $count + 1`;
-                if [ $count -ge 30 ]; then
-                  remove_dir $target_dir
-                  exit 0;
-                fi;
-              done
+                  count=0
+                  until mysql --user=root --password=$MYSQL_ROOT_PASSWORD  -e "SELECT 1";
+                    do sleep 3;
+                    count=`expr $count + 1`;
+                    if [ $count -ge 30 ]; then
+                      remove_dir $target_dir
+                      exit 0;
+                    fi;
+                  done
 
-              mysqlcheck -A  --user=root --password=$MYSQL_ROOT_PASSWORD > /tmp/output.log
-              error_lines=`cat /tmp/output.log| grep -v "OK" | wc -l`
+                  mysqlcheck -A  --user=root --password=$MYSQL_ROOT_PASSWORD > /tmp/output.log
+                  error_lines=`cat /tmp/output.log| grep -v "OK" | wc -l`
 
-              cat /tmp/output.log
+                  cat /tmp/output.log
 
-              if [ $error_lines -gt 1 ];then
-                remove_dir $target_dir
-              else
-                echo "Validation successful!!!"
-                cd /backup
-                totalFiles=`ls -t | grep "backup-" | wc -l`
-                if [ $totalFiles -gt {{ .Values.backup.retentionPeriod }} ]; then
-                  filestoDelete=`expr $totalFiles - {{ .Values.backup.retentionPeriod }}`
-                  ls -tr | grep backup | head -$filestoDelete | xargs rm -rf
-                fi
-              fi
-            volumeMounts:
-            - mountPath: /etc/localtime
-              name: localtime
-              readOnly: true
-            - name: backup-dir
-              mountPath: /backup
+                  if [ $error_lines -gt 1 ];then
+                    remove_dir $target_dir
+                  else
+                    echo "Validation successful!!!"
+                    cd /backup
+                    totalFiles=`ls -t | grep "backup-" | wc -l`
+                    if [ $totalFiles -gt {{ .Values.backup.retentionPeriod }} ]; then
+                      filestoDelete=`expr $totalFiles - {{ .Values.backup.retentionPeriod }}`
+                      ls -tr | grep backup | head -$filestoDelete | xargs rm -rf
+                    fi
+                  fi
+              resources: {{ include "common.resources" . | nindent 12 }}
+              volumeMounts:
+                - mountPath: /etc/localtime
+                  name: localtime
+                  readOnly: true
+                - name: backup-dir
+                  mountPath: /backup
+          imagePullSecrets:
+            - name: {{ include "common.namespace" . }}-docker-registry-key
           volumes:
-          - name: localtime
-            hostPath:
-              path: /etc/localtime
-          - name: backup-dir
-            persistentVolumeClaim:
-              claimName: {{ include "common.fullname" . }}-backup-data
-          - name: db-data
-            persistentVolumeClaim:
-              claimName: {{ include "common.fullname" . }}-data-{{ include "common.fullname" . }}-{{ sub .Values.replicaCount 1 }}
+            - name: localtime
+              hostPath:
+                path: /etc/localtime
+            - name: backup-dir
+              persistentVolumeClaim:
+                claimName: {{ include "common.fullname" . }}-backup-data
 {{- end }}
diff --git a/kubernetes/common/mariadb-galera/templates/backup/pv.yaml b/kubernetes/common/mariadb-galera/templates/backup/pv.yaml
index ec6f44d955..30eb74b059 100644
--- a/kubernetes/common/mariadb-galera/templates/backup/pv.yaml
+++ b/kubernetes/common/mariadb-galera/templates/backup/pv.yaml
@@ -1,5 +1,6 @@
 {{/*
-# Copyright © 2019 Amdocs, Bell Canada, Orange
+# Copyright © 2019 Amdocs, Bell Canada
+# Copyright © 2019-2020 Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,28 +15,29 @@
 # limitations under the License.
 */}}
 {{- if .Values.backup.enabled }}
-{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) -}}
+{{- if and .Values.backup.persistence.enabled (not .Values.backup.persistence.existingClaim) -}}
 {{- if eq "True" (include "common.needPV" .) -}}
 ---
 apiVersion: v1
 kind: PersistentVolume
 metadata:
-  name: {{ include "common.fullname" . }}-backup-data
+  name: {{ include "common.fullname" . }}-backup
   namespace: {{ include "common.namespace" . }}
   labels:
-    app: {{ include "common.name" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    heritage: {{ .Release.Service }}
-    name: {{ include "common.fullname" . }}-backup-data
+    app: {{ include "common.fullname" . }}-backup
+    app.kubernetes.io/name: {{ include "common.name" . }}
+    helm.sh/chart: {{ include "common.chart" . }}
+    app.kubernetes.io/instance: {{ include "common.release" . }}-backup
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
 spec:
   capacity:
-    storage: {{ .Values.persistence.size }}
+    storage: {{ .Values.backup.persistence.size }}
   accessModes:
-  - {{ .Values.persistence.accessMode }}
-  persistentVolumeReclaimPolicy: {{ .Values.persistence.volumeReclaimPolicy }}
+  - {{ .Values.backup.persistence.accessMode }}
+  persistentVolumeReclaimPolicy: {{ .Values.backup.persistence.volumeReclaimPolicy }}
   storageClassName: "{{ include "common.fullname" . }}-data-backup"
   hostPath:
-    path: {{ .Values.global.persistence.backup.mountPath | default .Values.persistence.backup.mountPath }}/{{ include "common.namespace" $ }}/{{ include "common.fullname" $ }}
+    path: {{ .Values.global.persistence.mountPath | default .Values.persistence.mountPath }}/{{ include "common.namespace" . }}/{{ include "common.fullname" . }}
 {{- end -}}
 {{- end -}}
 {{- end -}}
diff --git a/kubernetes/common/mariadb-galera/templates/backup/pvc.yaml b/kubernetes/common/mariadb-galera/templates/backup/pvc.yaml
index 807833ae93..5dd8a3f52f 100644
--- a/kubernetes/common/mariadb-galera/templates/backup/pvc.yaml
+++ b/kubernetes/common/mariadb-galera/templates/backup/pvc.yaml
@@ -1,5 +1,6 @@
 {{/*
-# Copyright © 2019 Amdocs, Bell Canada, Orange
+# Copyright © 2019 Amdocs, Bell Canada
+# Copyright © 2019-2020 Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,7 +15,7 @@
 # limitations under the License.
 */}}
 {{- if .Values.backup.enabled }}
-{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) -}}
+{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
 ---
 kind: PersistentVolumeClaim
 apiVersion: v1
@@ -22,21 +23,22 @@ metadata:
   name: {{ include "common.fullname" . }}-backup-data
   namespace: {{ include "common.namespace" . }}
   labels:
-    app: {{ include "common.name" . }}-backup
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
-    release: "{{ include "common.release" . }}"
-    heritage: "{{ .Release.Service }}"
-{{- if .Values.persistence.annotations }}
+    app: {{ include "common.fullname" . }}-backup
+    app.kubernetes.io/name: {{ include "common.name" . }}
+    helm.sh/chart: {{ include "common.chart" . }}
+    app.kubernetes.io/instance: {{ include "common.release" . }}-backup
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- if .Values.backup.persistence.annotations }}
   annotations:
-{{ toYaml .Values.persistence.annotations | indent 4 }}
+{{ toYaml .Values.backup.persistence.annotations | indent 4 }}
 {{- end }}
 spec:
   accessModes:
-    - {{ .Values.persistence.accessMode }}
+    - {{ .Values.backup.persistence.accessMode }}
   resources:
     requests:
-      storage: {{ .Values.persistence.size }}
-{{- if eq "True" (include "common.needPV" .) -}}
+      storage: {{ .Values.backup.persistence.size }}
+{{- if (include "common.needPV" .) }}
   storageClassName: "{{ include "common.fullname" . }}-data-backup"
 {{- else }}
   storageClassName: {{ include "common.storageClass" . }}
diff --git a/kubernetes/common/mariadb-galera/templates/configmap.yaml b/kubernetes/common/mariadb-galera/templates/configmap.yaml
index 685901fa95..c95a234fb7 100644
--- a/kubernetes/common/mariadb-galera/templates/configmap.yaml
+++ b/kubernetes/common/mariadb-galera/templates/configmap.yaml
@@ -1,6 +1,6 @@
 {{/*
 # Copyright © 2018 Amdocs, Bell Canada
-# Copyright © 2020 Samsung Electronics, and TATA Communications
+# Copyright © 2020 Samsung Electronics, TATA Communications, Bitnami, Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,65 +14,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 */}}
-{{- if .Values.externalConfig }}
+
+{{ if .Values.mariadbConfiguration }}
 apiVersion: v1
 kind: ConfigMap
 metadata:
-  name: {{ include "common.fullname" . }}-external-config
+  name: {{ printf "%s-configuration" (include "common.fullname" .) }}
   namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.name" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    release: {{ include "common.release" . }}
-    heritage: {{ .Release.Service }}
+  labels: {{- include "common.labels" . | nindent 4 }}
 data:
-  my_extra.cnf: |
-{{ .Values.externalConfig | indent 4 }}
-{{- end }}
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ include "common.fullname" . }}
-  namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.name" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    release: {{ include "common.release" . }}
-    heritage: {{ .Release.Service }}
-data:
-{{ tpl (.Files.Glob "resources/config/*").AsConfig . | indent 2 }}
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ include "common.fullname" . }}-upgrade-deployment
-  annotations:
-    "helm.sh/hook": "pre-upgrade"
-    "helm.sh/hook-weight": "0"
-    "helm.sh/hook-delete-policy": hook-succeeded
-  namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.name" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-data:
-{{ tpl (.Files.Glob "resources/*").AsConfig . | indent 2 }}
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ include "common.fullname" . }}-post-upgrade-deployment
-  annotations:
-    "helm.sh/hook": "post-upgrade"
-    "helm.sh/hook-weight": "0"
-    "helm.sh/hook-delete-policy": hook-succeeded
-  namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.name" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-data:
-{{ tpl (.Files.Glob "resources/post-upgrade-script.sh").AsConfig . | indent 2 }}
+  my.cnf: |
+{{ .Values.mariadbConfiguration | indent 4 }}
+{{- end }}
\ No newline at end of file
diff --git a/kubernetes/common/mariadb-galera/templates/job.yaml b/kubernetes/common/mariadb-galera/templates/job.yaml
deleted file mode 100644
index 250279ace2..0000000000
--- a/kubernetes/common/mariadb-galera/templates/job.yaml
+++ /dev/null
@@ -1,109 +0,0 @@
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: {{ include "common.fullname" . }}-pre-upgrade
-  annotations:
-    "helm.sh/hook": "pre-upgrade"
-    "helm.sh/hook-weight": "1"
-    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
-spec:
-  template:
-    spec:
-      securityContext:
-        fsGroup: 1001
-        runAsUser: 1001
-      containers:
-      - name: mariadb-job-pre-upgrade
-        image: {{ include "repositoryGenerator.image.kubectl" . }}
-        imagePullPolicy: IfNotPresent
-        env:
-          - name: NAMESPACE_ENV
-            valueFrom:
-                fieldRef:
-                  apiVersion: v1
-                  fieldPath: metadata.namespace
-        command: ["/bin/bash", "-c", "--"]
-        args: ["/upgrade/upgrade-scripts.sh"]
-        volumeMounts:
-        - name: config-mariadb-upgrade
-          mountPath: /upgrade
-      volumes:
-      - name: config-mariadb-upgrade
-        configMap:
-            name: {{ include "common.fullname" . }}-upgrade-deployment
-            defaultMode: 0777
-      restartPolicy: OnFailure
----
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: {{ include "common.fullname" . }}-post-upgrade
-  annotations:
-    "helm.sh/hook": "post-upgrade"
-    "helm.sh/hook-weight": "1"
-    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
-spec:
-  template:
-    spec:
-      securityContext:
-        fsGroup: 1001
-        runAsUser: 0
-      initContainers:
-      - image: {{ include "repositoryGenerator.image.readiness" . }}
-        name: mariadb-galera-upgrade-readiness
-        env:
-        - name: NAMESPACE
-          valueFrom:
-            fieldRef:
-              apiVersion: v1
-              fieldPath: metadata.namespace
-        command:
-        - /app/ready.py
-        args:
-        - --container-name
-        - mariadb-galera
-      containers:
-      - name: mariadb-job-post-upgrade
-        image: {{ include "repositoryGenerator.image.kubectl" . }}
-        imagePullPolicy: IfNotPresent
-        env:
-        - name: NAMESPACE_ENV
-          valueFrom:
-              fieldRef:
-                apiVersion: v1
-                fieldPath: metadata.namespace
-        - name: REPLICA_COUNT
-          value: "{{ .Values.replicaCount }}"
-        command: ["/bin/bash", "-c", "--"]
-        args: ["/upgrade/post-upgrade-script.sh"]
-        volumeMounts:
-        - name: config-mariadb-upgrade
-          mountPath: /upgrade
-      volumes:
-      - name: config-mariadb-upgrade
-        configMap:
-            name: {{ include "common.fullname" . }}-post-upgrade-deployment
-            defaultMode: 0777
-      restartPolicy: OnFailure
----
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: {{ include "common.fullname" . }}-post-delete
-  annotations:
-    "helm.sh/hook": "post-delete"
-    "helm.sh/hook-weight": "1"
-    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
-spec:
-  template:
-    spec:
-      containers:
-      - name: mariadb-job-post-delete
-        image: {{ include "repositoryGenerator.image.kubectl" . }}
-        imagePullPolicy: IfNotPresent
-        command: ["/bin/bash", "-c", "--"]
-        args:
-        - for ((index=0;index<{{ $.Values.replicaCount }};index+=1));
-          do kubectl delete pvc "{{ include "common.fullname" . }}-data-{{ include "common.fullname" . }}-$index";
-          done; kubectl delete deployment {{ include "common.fullname" . }}-upgrade-deployment;
-      restartPolicy: OnFailure
diff --git a/kubernetes/common/mariadb-galera/templates/metrics-svc.yaml b/kubernetes/common/mariadb-galera/templates/metrics-svc.yaml
new file mode 100644
index 0000000000..e71351e9cb
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/metrics-svc.yaml
@@ -0,0 +1,34 @@
+{{/*
+# Copyright © 2020 Bitnami, Orange
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
+
+{{- if default false .Values.global.metrics.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ printf "%s-metrics" (include "common.fullname" .) }}
+  namespace: {{ include "common.namespace" . }}
+  labels: {{- include "common.labels" . | nindent 4 }}
+  {{- if .Values.metrics.service.annotations }}
+  annotations: {{- include "common.tplValue" (dict "value" .Values.metrics.service.annotations "context" .) | nindent 4 }}
+  {{- end }}
+spec:
+  type: {{ .Values.metrics.service.type }}
+  ports:
+    - name: metrics
+      port: {{ .Values.metrics.service.port }}
+      targetPort: metrics
+  selector: {{- include "common.matchLabels" . | nindent 4 }}
+{{- end }}
diff --git a/kubernetes/common/mariadb-galera/templates/pdb.yaml b/kubernetes/common/mariadb-galera/templates/pdb.yaml
new file mode 100644
index 0000000000..4697934879
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/pdb.yaml
@@ -0,0 +1,30 @@
+{{/*
+# Copyright © 2020 Bitnami, Orange
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
+
+{{- if .Values.podDisruptionBudget.create }}
+apiVersion: policy/v1beta1
+kind: PodDisruptionBudget
+metadata: {{- include "common.resourceMetadata" . | nindent 2 }}
+spec:
+{{- if .Values.podDisruptionBudget.minAvailable }}
+  minAvailable: {{ .Values.podDisruptionBudget.minAvailable }}
+{{- end }}
+{{- if .Values.podDisruptionBudget.maxUnavailable }}
+  maxUnavailable: {{ .Values.podDisruptionBudget.maxUnavailable }}
+{{- end }}
+  selector:
+    matchLabels: {{- include "common.matchLabels" . | nindent 6 }}
+{{- end }}
diff --git a/kubernetes/common/mariadb-galera/templates/prometheusrules.yaml b/kubernetes/common/mariadb-galera/templates/prometheusrules.yaml
new file mode 100644
index 0000000000..cf0ab566a4
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/prometheusrules.yaml
@@ -0,0 +1,31 @@
+{{/*
+# Copyright © 2020 Bitnami, Orange
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
+
+{{- if default false (and .Values.global.metrics.enabled .Values.global.metrics.custom_resources) }}
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: {{ template "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels: {{- include "common.labels" . | nindent 4 }}
+    {{- toYaml .Values.metrics.prometheusRules.selector | nindent 4 }}
+spec:
+  groups:
+  - name: {{ template "common.fullname" . }}
+    rules:
+      {{- toYaml .Values.metrics.prometheusRules.rules | nindent 6 }}
+{{- end }}
+
diff --git a/kubernetes/common/mariadb-galera/templates/pv.yaml b/kubernetes/common/mariadb-galera/templates/pv.yaml
index 579b3475d1..54a02cf2db 100644
--- a/kubernetes/common/mariadb-galera/templates/pv.yaml
+++ b/kubernetes/common/mariadb-galera/templates/pv.yaml
@@ -1,5 +1,6 @@
 {{/*
-# Copyright © 2019 Amdocs, Bell Canada, Orange
+# Copyright © 2018 Amdocs, Bell Canada
+# Copyright © 2019-2020 Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,33 +15,4 @@
 # limitations under the License.
 */}}
 
-{{- $global := . }}
-{{- if and $global.Values.persistence.enabled (not $global.Values.persistence.existingClaim) }}
-{{- if eq "True" (include "common.needPV" .) -}}
-{{- range $i := until (int $global.Values.replicaCount)}}
-kind: PersistentVolume
-apiVersion: v1
-metadata:
-  name: {{ include "common.fullname" $global }}-data-{{ $i }}
-  namespace: {{ include "common.namespace" $global }}
-  labels:
-    app: {{ include "common.fullname" $global }}
-    chart: "{{ $global.Chart.Name }}-{{ $global.Chart.Version | replace "+" "_" }}"
-    release: "{{ include "common.release" $global }}"
-    heritage: "{{ $global.Release.Service }}"
-    name: {{ include "common.fullname" $global }}
-spec:
-  capacity:
-    storage: {{ $global.Values.persistence.size}}
-  accessModes:
-    - {{ $global.Values.persistence.accessMode }}
-  persistentVolumeReclaimPolicy: {{ $global.Values.persistence.volumeReclaimPolicy }}
-  storageClassName: "{{ include "common.fullname" $global }}-data"
-  hostPath:
-    path: {{ $global.Values.global.persistence.mountPath | default $global.Values.persistence.mountPath }}/{{ include "common.release" $global }}/{{ $global.Values.persistence.mountSubPath }}-{{$i}}
-{{if ne $i (int $global.Values.replicaCount) }}
----
-{{- end -}}
-{{- end -}}
-{{- end -}}
-{{- end -}}
+{{ include "common.replicaPV" . }}
diff --git a/kubernetes/common/mariadb-galera/templates/secrets.yaml b/kubernetes/common/mariadb-galera/templates/secrets.yaml
index 27c9a3aaee..527f41266d 100644
--- a/kubernetes/common/mariadb-galera/templates/secrets.yaml
+++ b/kubernetes/common/mariadb-galera/templates/secrets.yaml
@@ -1,6 +1,7 @@
 {{/*
 # Copyright © 2018 Amdocs, Bell Canada
 # Copyright © 2019 Samsung Electronics
+# Copyright © 2019-2020 Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,4 +16,4 @@
 # limitations under the License.
 */}}
 
-{{ include "common.secretFast" . }}
+{{ include "common.secretFast" . }}
\ No newline at end of file
diff --git a/kubernetes/common/mariadb-galera/templates/service.yaml b/kubernetes/common/mariadb-galera/templates/service.yaml
index 69d8999f67..75aff985e5 100644
--- a/kubernetes/common/mariadb-galera/templates/service.yaml
+++ b/kubernetes/common/mariadb-galera/templates/service.yaml
@@ -1,5 +1,6 @@
 {{/*
 # Copyright © 2018 Amdocs, Bell Canada
+# Copyright © 2020 Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,23 +15,6 @@
 # limitations under the License.
 */}}
 
-apiVersion: v1
-kind: Service
-metadata:
-  annotations:
-    service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
-#  name: {{ include "common.servicename" . }}
-  name: {{ .Values.service.name }}
-  namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.fullname" . }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
-    release: "{{ include "common.release" . }}"
-    heritage: "{{ .Release.Service }}"
-spec:
-  ports:
-    - name: {{ .Values.service.portName }}
-      port: {{ .Values.service.internalPort }}
-  clusterIP: None
-  selector:
-    app: {{ include "common.fullname" . }}
+{{ include "common.service" . }}
+---
+{{ include "common.headlessService" . }}
diff --git a/kubernetes/common/mariadb-galera/templates/servicemonitor.yaml b/kubernetes/common/mariadb-galera/templates/servicemonitor.yaml
new file mode 100644
index 0000000000..6c3b41f5a5
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/servicemonitor.yaml
@@ -0,0 +1,51 @@
+{{/*
+# Copyright © 2020 Bitnami, Orange
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
+
+{{- if default false (and .Values.global.metrics.enabled .Values.global.metrics.custom_resources) }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ template "common.fullname" . }}
+  {{- if .Values.metrics.serviceMonitor.namespace }}
+  namespace: {{ .Values.metrics.serviceMonitor.namespace }}
+  {{- else }}
+  namespace: {{ include "common.namespace" . }}
+  {{- end }}
+  labels: {{- include "common.labels" . | nindent 4 }}
+    {{- range $key, $value := .Values.metrics.serviceMonitor.selector }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+spec:
+  selector:
+    matchLabels: {{- include "common.matchLabels" . | nindent 6 }}
+  endpoints:
+    - port: metrics
+      {{- if .Values.metrics.serviceMonitor.interval }}
+      interval: {{ .Values.metrics.serviceMonitor.interval }}
+      {{- end }}
+      {{- if .Values.metrics.serviceMonitor.scrapeTimeout }}
+      scrapeTimeout: {{ .Values.metrics.serviceMonitor.scrapeTimeout }}
+      {{- end }}
+      {{- if .Values.metrics.serviceMonitor.relabelings }}
+      relabelings: {{- include "common.tplValue" ( dict "value" .Values.metrics.serviceMonitor.relabelings "context" $) | nindent 8 }}
+      {{- end }}
+      {{- if .Values.metrics.serviceMonitor.metricRelabelings }}
+      metricRelabelings: {{- include "common.tplValue" ( dict "value" .Values.metrics.serviceMonitor.metricRelabelings "context" $) | nindent 8 }}
+      {{- end }}
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+{{- end }}
diff --git a/kubernetes/common/mariadb-galera/templates/statefulset.yaml b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
index eb21fe3182..0dcb8e3e1c 100644
--- a/kubernetes/common/mariadb-galera/templates/statefulset.yaml
+++ b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
@@ -1,5 +1,8 @@
 {{/*
-# Copyright © 2019 Amdocs, Bell Canada, Orange, Samsung Electronics
+# Copyright © 2018 Amdocs, Bell Canada
+# Copyright © 2019 Samsung Electronics
+# Copyright © 2019-2020 Orange
+# Copyright © 2020 Bitnami
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,128 +19,223 @@
 
 apiVersion: apps/v1
 kind: StatefulSet
-metadata:
-  name: {{ include "common.fullname" . }}
-  namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.fullname" . }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
-    release: "{{ include "common.release" . }}"
-    heritage: "{{ .Release.Service }}"
+metadata: {{- include "common.resourceMetadata" . | nindent 2 }}
 spec:
-  serviceName: {{ .Values.service.name }}
+  podManagementPolicy: {{ .Values.podManagementPolicy }}
   replicas: {{ .Values.replicaCount }}
-  selector:
-    matchLabels:
-      app: {{ include "common.fullname" . }}
+  selector: {{- include "common.selectors" . | nindent 4 }}
+  serviceName: {{ include "common.servicename" . }}-headless
+  updateStrategy:
+    type: {{ .Values.updateStrategy.type }}
+    {{- if (eq "Recreate" .Values.updateStrategy.type) }}
+    rollingUpdate: null
+    {{- end }}
   template:
-    metadata:
-      labels:
-        app: {{ include "common.fullname" . }}
-        chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
-        release: "{{ include "common.release" . }}"
-        heritage: "{{ .Release.Service }}"
-      annotations:
-        pod.alpha.kubernetes.io/initialized: "true"
+    metadata: {{- include "common.templateMetadata" . | nindent 6 }}
     spec:
-    {{- if .Values.nodeSelector }}
-      nodeSelector:
-{{ toYaml .Values.nodeSelector | indent 8 }}
-    {{- end }}
-      volumes:
-      {{- if .Values.externalConfig }}
-        - name: config
-          configMap:
-            name: {{ include "common.fullname" . }}-external-config
-      {{- end}}
-        - name: init-script
-          configMap:
-            name: {{ include "common.fullname" . }}
-            defaultMode: 0755
-        - name: localtime
-          hostPath:
-            path: /etc/localtime
-      imagePullSecrets:
-      - name: {{ include "common.namespace" . }}-docker-registry-key
+      {{ include "common.podSecurityContext" . | indent 6  | trim }}
+      initContainers:
+        # we shouldn't need this but for unknown reason, it's fsGroup is not
+        # applied
+        - name: fix-permission
+          command:
+            - /bin/sh
+          args:
+            - -c
+            - |
+              chown -R {{ .Values.securityContext.user_id }}:{{ .Values.securityContext.group_id }} /data
+              chown -R {{ .Values.securityContext.user_id }}:{{ .Values.securityContext.group_id }} /bootstrap/
+              chown -R {{ .Values.securityContext.user_id }}:{{ .Values.securityContext.group_id }} /tmp/
+              {{- if .Values.mariadbConfiguration }}
+              cp /config/my.cnf /actual/my.cnf
+              chown -R {{ .Values.securityContext.user_id }}:{{ .Values.securityContext.group_id }} /actual
+              {{- end }}
+          image: {{ include "repositoryGenerator.image.busybox" . }}
+          imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+          securityContext:
+            runAsUser: 0
+          volumeMounts:
+            - name: previous-boot
+              mountPath: /bootstrap
+            - name: mariadb-tmp-folder
+              mountPath: /tmp
+            - name: {{ include "common.fullname" . }}
+              mountPath: /data
+            {{- if .Values.mariadbConfiguration }}
+            - name: mariadb-galera-starting-config
+              mountPath: /config/my.cnf
+              subPath: my.cnf
+            - name: mariadb-galera-actual-config
+              mountPath: /actual
+            {{- end }}
       containers:
         - name: {{ include "common.name" . }}
           image: {{ include "repositoryGenerator.dockerHubRepository" . }}/{{ .Values.image }}
           imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy | quote}}
+          command:
+            - bash
+            - -ec
+            - |
+                {{- if (not (empty (.Values.galera.bootstrap.bootstrapFromNode | quote)))}}
+                {{- $fullname := include "common.names.fullname" . }}
+                {{- $bootstrapFromNode := int .Values.galera.bootstrap.bootstrapFromNode }}
+                # Bootstrap from the indicated node
+                NODE_ID="${MY_POD_NAME#"{{ $fullname }}-"}"
+                if [[ "$NODE_ID" -eq "{{ $bootstrapFromNode }}" ]]; then
+                    export MARIADB_GALERA_CLUSTER_BOOTSTRAP=yes
+                    export MARIADB_GALERA_FORCE_SAFETOBOOTSTRAP={{ ternary "yes" "no" .Values.galera.bootstrap.forceSafeToBootstrap }}
+                fi
+                {{- end }}
+                exec /opt/bitnami/scripts/mariadb-galera/entrypoint.sh /opt/bitnami/scripts/mariadb-galera/run.sh
           env:
-            - name: POD_NAMESPACE
+            - name: MY_POD_NAME
               valueFrom:
                 fieldRef:
-                  apiVersion: v1
-                  fieldPath: metadata.namespace
-            - name: MYSQL_USER
-              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.userCredentialsUID" .) "key" "login") | indent 14}}
-            - name: MYSQL_PASSWORD
-              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.userCredentialsUID" .) "key" "password") | indent 14}}
-            - name: MYSQL_DATABASE
-              value: {{ default "" .Values.config.mysqlDatabase | quote }}
-            - name: MYSQL_ROOT_PASSWORD
-              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 14}}
-          ports:
-          - containerPort: {{ .Values.service.internalPort }}
-            name: {{ .Values.service.portName }}
-          - containerPort: {{ .Values.service.sstPort }}
-            name: {{ .Values.service.sstPortName }}
-          - containerPort: {{ .Values.service.replicationPort }}
-            name: {{ .Values.service.replicationName }}
-          - containerPort: {{ .Values.service.istPort }}
-            name: {{ .Values.service.istPortName }}
+                  fieldPath: metadata.name
+            - name: BITNAMI_DEBUG
+              value: {{ ternary "true" "false" .Values.debug | quote }}
+            - name: DB_INIT_SLEEP_TIME
+              value: {{ .Values.init_sleep_time | quote }}
+            - name: MARIADB_GALERA_CLUSTER_NAME
+              value: {{ .Values.galera.name | quote }}
+            - name: MARIADB_GALERA_CLUSTER_ADDRESS
+              value: "gcomm://{{ template "common.name" . }}-headless.{{ include "common.namespace" . }}.svc.{{ .Values.global.clusterDomain }}"
+            - name: MARIADB_ROOT_USER
+              value: {{ .Values.rootUser.user | quote }}
+            - name: MARIADB_ROOT_PASSWORD
+              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 14 }}
+            - name: MARIADB_USER
+              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.userCredentialsUID" .) "key" "login") | indent 14 }}
+            - name: MARIADB_PASSWORD
+              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.userCredentialsUID" .) "key" "password") | indent 14 }}
+            - name: MARIADB_DATABASE
+              value: {{ .Values.db.name | quote }}
+            - name: MARIADB_GALERA_MARIABACKUP_USER
+              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.backupCredentialsUID" .) "key" "login") | indent 14 }}
+            - name: MARIADB_GALERA_MARIABACKUP_PASSWORD
+              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.backupCredentialsUID" .) "key" "password") | indent 14 }}
+            {{- if .Values.extraFlags }}
+            - name: MARIADB_EXTRA_FLAGS
+              value: {{ .Values.extraFlags | quote }}
+            {{- end }}
+          ports: {{ include "common.containerPorts" . | nindent 12  }}
+          {{- if .Values.livenessProbe.enabled }}
+          livenessProbe:
+            exec:
+              command:
+                - bash
+                - -ec
+                - |
+                  exec mysqladmin status -u$MARIADB_ROOT_USER -p$MARIADB_ROOT_PASSWORD
+            initialDelaySeconds: {{ .Values.livenessProbe.initialDelaySeconds }}
+            periodSeconds: {{ .Values.livenessProbe.periodSeconds }}
+            timeoutSeconds: {{ .Values.livenessProbe.timeoutSeconds }}
+            successThreshold: {{ .Values.livenessProbe.successThreshold }}
+            failureThreshold: {{ .Values.livenessProbe.failureThreshold }}
+          {{- end }}
+          {{- if .Values.readinessProbe.enabled }}
           readinessProbe:
             exec:
               command:
-              - /usr/share/container-scripts/mysql/readiness-probe.sh
-            initialDelaySeconds: {{ .Values.readiness.initialDelaySeconds }}
-            periodSeconds: {{ .Values.readiness.periodSeconds }}
-            timeoutSeconds: {{ .Values.readiness.timeoutSeconds }}
-      {{- if eq .Values.liveness.enabled true }}
+                - bash
+                - -ec
+                - |
+                  exec mysqladmin status -u$MARIADB_ROOT_USER -p$MARIADB_ROOT_PASSWORD
+            initialDelaySeconds: {{ .Values.readinessProbe.initialDelaySeconds }}
+            periodSeconds: {{ .Values.readinessProbe.periodSeconds }}
+            timeoutSeconds: {{ .Values.readinessProbe.timeoutSeconds }}
+            successThreshold: {{ .Values.readinessProbe.successThreshold }}
+            failureThreshold: {{ .Values.readinessProbe.failureThreshold }}
+          {{- end }}
+          resources: {{ include "common.resources" . | nindent 12 }}
+          volumeMounts:
+            - name: previous-boot
+              mountPath: /opt/bitnami/mariadb/.bootstrap
+            - name: {{ include "common.fullname" . }}
+              mountPath: /bitnami/mariadb
+            - name: mariadb-tmp-folder
+              mountPath: /opt/bitnami/mariadb/tmp
+            {{- if .Values.mariadbConfiguration }}
+            - name: mariadb-galera-actual-config
+              mountPath: /opt/bitnami/mariadb/conf
+            {{- end }}
+        {{- if default false .Values.global.metrics.enabled }}
+        - name: {{ include "common.name" . }}-metrics
+          image: {{ include "repositoryGenerator.dockerHubRepository" . }}/{{ .Values.metrics.image }}
+          imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.metrics.pullPolicy | quote}}
+          env:
+            - name: MARIADB_METRICS_EXTRA_FLAGS
+              value: {{ default "" (join " " .Values.metrics.extraFlags) | quote }}
+            - name: MARIADB_ROOT_USER
+              value: {{ .Values.rootUser.user | quote }}
+            - name: MARIADB_ROOT_PASSWORD
+              {{- include "common.secret.envFromSecretFast" (dict "global" . "uid" (include "common.mariadb.secret.rootPassUID" .) "key" "password") | indent 14}}
+          command:
+            - sh
+            - -c
+            - |
+              DATA_SOURCE_NAME="$MARIADB_ROOT_USER:$MARIADB_ROOT_PASSWORD@(localhost:3306)/" /bin/mysqld_exporter $MARIADB_METRICS_EXTRA_FLAGS
+          ports:
+            - name: metrics
+              containerPort: 9104
           livenessProbe:
-            exec:
-              command: ["mysqladmin", "ping"]
-            initialDelaySeconds: {{ .Values.liveness.initialDelaySeconds }}
-            periodSeconds: {{ .Values.liveness.periodSeconds }}
-            timeoutSeconds: {{ .Values.liveness.timeoutSeconds }}
+            httpGet:
+              path: /metrics
+              port: metrics
+            initialDelaySeconds: 30
+            timeoutSeconds: 5
+          readinessProbe:
+            httpGet:
+              path: /metrics
+              port: metrics
+            initialDelaySeconds: 5
+            timeoutSeconds: 1
+          {{ include "common.containerSecurityContext" . | indent 10 | trim }}
+          resources: {{- toYaml .Values.metrics.resources | nindent 12 }}
+        {{- end }}
+      imagePullSecrets:
+        - name: {{ include "common.namespace" . }}-docker-registry-key
+      {{- if .Values.schedulerName }}
+      schedulerName: {{ .Values.schedulerName | quote }}
       {{- end }}
-          resources:
-{{ include "common.resources" . | indent 12 }}
-          volumeMounts:
-        {{- if .Values.externalConfig }}
-          - mountPath: /etc/config
-            name: config
-        {{- end}}
-          - mountPath: /etc/localtime
-            name: localtime
-            readOnly: true
-          - mountPath: /usr/share/container-scripts/mysql/configure-mysql.sh
-            subPath: configure-mysql.sh
-            name: init-script
-{{- if .Values.persistence.enabled }}
-          - mountPath: /var/lib/mysql
-            name: {{ include "common.fullname" . }}-data
-      initContainers:
-        - name: {{ include "common.name" . }}-prepare
-          image: {{ include "repositoryGenerator.image.busybox" . }}
-          imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy | quote}}
-          command: ["sh", "-c", "chown -R 27:27 /var/lib/mysql"]
-          volumeMounts:
-            - name: {{ include "common.fullname" . }}-data
-              mountPath: /var/lib/mysql
+      {{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName }}
+      {{- end }}
+      serviceAccountName: {{ include "common.fullname" (dict "suffix" "read" "dot" . )}}
+      {{- if .Values.affinity }}
+      affinity: {{- include "common.tplvalues" ( dict "value" .Values.affinity "context" $) | nindent 8 }}
+      {{- else }}
+      affinity:
+        podAffinity: {{- include "common.affinities.pods" (dict "type" .Values.podAffinityPreset "context" $) | nindent 10 }}
+        podAntiAffinity: {{- include "common.affinities.pods" (dict "type" .Values.podAntiAffinityPreset "context" $) | nindent 10 }}
+        nodeAffinity: {{- include "common.affinities.nodes" (dict "type" .Values.nodeAffinityPreset.type "key" .Values.nodeAffinityPreset.key "values" .Values.nodeAffinityPreset.values) | nindent 10 }}
+      {{- end }}
+      {{- if .Values.nodeSelector }}
+      nodeSelector: {{- include "common.tplvalues" ( dict "value" .Values.nodeSelector "context" $) | nindent 8 }}
+      {{- end }}
+      {{- if .Values.tolerations }}
+      tolerations: {{- include "common.tplvalues" (dict "value" .Values.tolerations "context" .) | nindent 8 }}
+      {{- end }}
+      volumes:
+        - name: previous-boot
+          emptyDir: {}
+        - name: mariadb-tmp-folder
+          emptyDir: {}
+        {{- if .Values.mariadbConfiguration  }}
+        - name:  mariadb-galera-actual-config
+          emptyDir: {}
+        - name: mariadb-galera-starting-config
+          configMap:
+            name: {{ printf "%s-configuration" (include "common.fullname" .) }}
+        {{- end }}
+{{- if and .Values.persistence.enabled .Values.persistence.existingClaim }}
+        - name: {{ include "common.fullname" . }}
+          persistentVolumeClaim:
+            claimName: {{ .Values.persistence.existingClaim }}
+{{- else if not .Values.persistence.enabled }}
+        - name: {{ include "common.fullname" . }}
+          emptyDir: {}
+{{- else if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
   volumeClaimTemplates:
-  - metadata:
-      name: {{ include "common.fullname" . }}-data
-      labels:
-        name: {{ include "common.fullname" . }}
-        chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
-        release: "{{ include "common.release" . }}"
-        heritage: "{{ .Release.Service }}"
-    spec:
-      accessModes:
-      - {{ .Values.persistence.accessMode | quote }}
-      storageClassName: {{ include "common.storageClass" . }}
-      resources:
-        requests:
-          storage: {{ .Values.persistence.size | quote }}
+    - {{ include "common.PVCTemplate" (dict "dot" . "suffix" "data" "persistenceInfos" .Values.persistence) | indent 6 | trim }}
 {{- end }}
diff --git a/kubernetes/common/mariadb-galera/tests/pv_test.yaml b/kubernetes/common/mariadb-galera/tests/pv_test.yaml
deleted file mode 100644
index cd4007960b..0000000000
--- a/kubernetes/common/mariadb-galera/tests/pv_test.yaml
+++ /dev/null
@@ -1,35 +0,0 @@
----
-suite: test pv behavior
-templates:
-  - pv.yaml
-tests:
-  - it: 'should render "" (global case))'
-    values:
-      - ./values/persistence.yaml
-    set:
-      global.persistence.storageClass: "-"
-    asserts:
-      - isEmpty:
-
-  - it: 'should "" (override case)'
-    values:
-      - ./values/persistence.yaml
-    set:
-      global.persistence.storageClass: "global"
-      persistence.storageClassOverride: "-"
-    asserts:
-      - isEmpty:
-
-  - it: 'should "" (local case)'
-    values:
-      - ./values/persistence.yaml
-    set:
-      persistence.storageClass: "-"
-    asserts:
-      - isEmpty:
-
-  - it: 'should render "RELEASE-NAME-mariadb-galera-data" as storageClassname'
-    asserts:
-      - equal:
-          path: spec.storageClassName
-          value: "RELEASE-NAME-mariadb-galera-data"
diff --git a/kubernetes/common/mariadb-galera/tests/storage_class_test.yaml b/kubernetes/common/mariadb-galera/tests/storage_class_test.yaml
deleted file mode 100644
index 9b7bdcb550..0000000000
--- a/kubernetes/common/mariadb-galera/tests/storage_class_test.yaml
+++ /dev/null
@@ -1,67 +0,0 @@
----
-suite: test storage class behavior
-templates:
-  - statefulset.yaml
-tests:
-  - it: 'should render "" as storageClassname (global case)'
-    values:
-      - ./values/persistence.yaml
-    set:
-      global.persistence.storageClass: "-"
-    asserts:
-      - isEmpty:
-          path: spec.volumeClaimTemplates[0].spec.storageClassName
-
-  - it: 'should "" as storageClassname (override case)'
-    values:
-      - ./values/persistence.yaml
-    set:
-      global.persistence.storageClass: "global"
-      persistence.storageClassOverride: "-"
-    asserts:
-      - isEmpty:
-          path: spec.volumeClaimTemplates[0].spec.storageClassName
-
-  - it: 'should "" as storageClassname (local case)'
-    values:
-      - ./values/persistence.yaml
-    set:
-      persistence.storageClass: "-"
-    asserts:
-      - isEmpty:
-          path: spec.volumeClaimTemplates[0].spec.storageClassName
-
-  - it: 'should render "global" as storageClassname'
-    values:
-      - ./values/persistence.yaml
-    set:
-      global.persistence.storageClass: "global"
-    asserts:
-      - equal:
-          path: spec.volumeClaimTemplates[0].spec.storageClassName
-          value: "global"
-
-  - it: 'should render "local" as storageClassname'
-    values:
-      - ./values/persistence.yaml
-    asserts:
-      - equal:
-          path: spec.volumeClaimTemplates[0].spec.storageClassName
-          value: "local"
-
-  - it: 'should render "override" as storageClassname'
-    values:
-      - ./values/persistence.yaml
-    set:
-      global.persistence.storageClass: "global"
-      persistence.storageClassOverride: "override"
-    asserts:
-      - equal:
-          path: spec.volumeClaimTemplates[0].spec.storageClassName
-          value: "override"
-
-  - it: 'should render "RELEASE-NAME-mariadb-galera-data" as storageClassname'
-    asserts:
-      - equal:
-          path: spec.volumeClaimTemplates[0].spec.storageClassName
-          value: "RELEASE-NAME-mariadb-galera-data"
diff --git a/kubernetes/common/mariadb-galera/tests/values/persistence.yaml b/kubernetes/common/mariadb-galera/tests/values/persistence.yaml
deleted file mode 100644
index a282f74318..0000000000
--- a/kubernetes/common/mariadb-galera/tests/values/persistence.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
----
-persistence:
-  enabled: true
-  existingClaim: false
-  size: 10Gb
-  storageClass: "local"
diff --git a/kubernetes/common/mariadb-galera/values.yaml b/kubernetes/common/mariadb-galera/values.yaml
index 6b1676fba7..12d2d75e38 100644
--- a/kubernetes/common/mariadb-galera/values.yaml
+++ b/kubernetes/common/mariadb-galera/values.yaml
@@ -1,5 +1,6 @@
 # Copyright © 2018 Amdocs, Bell Canada
 # Copyright © 2019 Samsung Electronics
+# Copyright © 2020 Bitnami, Orange
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,20 +14,28 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+
 #################################################################
 # Secrets metaconfig
 #################################################################
 secrets:
   - uid: '{{ include "common.mariadb.secret.rootPassUID" . }}'
     type: password
-    externalSecret: '{{ tpl (default "" .Values.config.mariadbRootPasswordExternalSecret) . }}'
-    password: '{{ .Values.config.mariadbRootPassword }}'
+    externalSecret: '{{ tpl (default "" .Values.rootUser.externalSecret) . }}'
+    password: '{{ .Values.rootUser.password }}'
   - uid: '{{ include "common.mariadb.secret.userCredentialsUID" . }}'
     type: basicAuth
-    externalSecret: '{{ tpl (default "" .Values.config.userCredentialsExternalSecret) . }}'
-    login: '{{ .Values.config.userName }}'
-    password: '{{ .Values.config.userPassword }}'
+    externalSecret: '{{ tpl (default "" .Values.db.externalSecret) . }}'
+    login: '{{ .Values.db.user }}'
+    password: '{{ .Values.db.password }}'
+  - uid: '{{ include "common.mariadb.secret.backupCredentialsUID" . }}'
+    type: basicAuth
+    externalSecret: '{{ tpl (default "" .Values.galera.mariabackup.externalSecret) . }}'
+    login: '{{ .Values.galera.mariabackup.user }}'
+    password: '{{ .Values.galera.mariabackup.password }}'
 
+# bitnami image doesn't support well single quote in password
+passwordStrengthOverride: basic
 
 #################################################################
 # Global configuration defaults.
@@ -37,56 +46,399 @@ global:
     mountPath: /dockerdata-nfs
     backup:
       mountPath: /dockerdata-nfs/backup
+  clusterDomain: cluster.local
+  metrics: {}
 
-#################################################################
-# Application configuration defaults.
-#################################################################
+image: bitnami/mariadb-galera:10.5.8
+## Specify a imagePullPolicy
+## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
+## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
+##
+pullPolicy: Always
+
+## Set to true if you would like to see extra information on logs
+## It turns BASH debugging in minideb-extras-base
+##
+debug: true
+
+## Sometimes, especially when a lot of pods are created at the same time,
+## actions performed on the databases are tried to be done before actual start.
+init_sleep_time: 5
+
+## String to partially override common.names.fullname template (will maintain the release name)
+##
+nameOverride: mariadb-galera
+
+## Use an alternate scheduler, e.g. "stork".
+## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/
+##
+# schedulerName:
+
+## StatefulSet controller supports relax its ordering guarantees while preserving its uniqueness and identity guarantees. There are two valid pod management policies: OrderedReady and Parallel
+## ref: https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#pod-management-policy
+##
+podManagementPolicy: OrderedReady
+
+## MariaDB Gallera K8s svc properties
+##
+service:
+  ## Kubernetes service type and port number
+  ##
+  type: ClusterIP
+  headless: {}
+  ports:
+    - name: mysql
+      port: 3306
+  headlessPorts:
+    - name: galera
+      port: 4567
+    - name: ist
+      port: 4568
+    - name: sst
+      port: 4444
+
+
+## Pods Service Account
+## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/
+##
+serviceAccount:
+  nameOverride: mariadb-galera
+  roles:
+    - read
+
+## Pod Security Context
+## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
+##
+securityContext:
+  enabled: true
+  user_id: 10001
+  group_id: 10001
+
+## Database credentials for root (admin) user
+##
+rootUser:
+  ## MariaDB admin user
+  user: root
+  ## MariaDB admin password
+  ## Password is ignored if externalSecret is specified.
+  ## If not set, password will be "randomly" generated
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb-galera#setting-the-root-password-on-first-run
+  ##
+  # password:
+  # externalSecret:
+
+## Custom db configuration
+##
+db:
+  ## MariaDB username and password
+  ## Password is ignored if externalSecret is specified.
+  ## If not set, password will be "randomly" generated
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb-galera#creating-a-database-user-on-first-run
+  ##
+  user: my-user
+  # password:
+  # externalSecret:
+  ## Database to create
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb-galera#creating-a-database-on-first-run
+  ##
+  # name: my_database
+
+## Galera configuration
+##
+galera:
+  ## Galera cluster name
+  ##
+  name: galera
+
+  ## Bootstraping options
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb-galera#bootstraping
+  bootstrap:
+    ## Node to bootstrap from, you will need to change this parameter incase you want to bootstrap from other node
+    ##
+    bootstrapFromNode:
+    ## Force safe_to_bootstrap in grastate.date file.
+    ## This will set safe_to_bootstrap=1 in the node indicated by bootstrapFromNode.
+    forceSafeToBootstrap: false
+
+  ## Credentials to perform backups
+  ##
+  mariabackup:
+    ## MariaBackup username and password
+    ## Password is ignored if externalSecret is specified.
+    ## If not set, password will be "randomly" generated
+    ## ref: https://github.com/bitnami/bitnami-docker-mariadb-galera#setting-up-a-multi-master-cluster
+    ##
+    user: mariabackup
+    # password:
+    # externalSecret:
+
+backup:
+  enabled: false
+  cron: "00 00 * * *"
+  retentionPeriod: 3
+  persistence:
+    ## If true, use a Persistent Volume Claim, If false, use emptyDir
+    ##
+    enabled: true
+    # Enable persistence using an existing PVC
+    # existingClaim:
+    ## selector can be used to match an existing PersistentVolume
+    ## selector:
+    ##   matchLabels:
+    ##     app: my-app
+    selector: {}
+    ## Persistent Volume Storage Class
+    ## If defined, storageClassName: <storageClass>
+    ## If set to "-", storageClassName: "", which disables dynamic provisioning
+    ## If undefined (the default) or set to null, no storageClassName spec is
+    ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
+    ##   GKE, AWS & OpenStack)
+    ##
+    # storageClass: "-"
+    ## Persistent Volume Claim annotations
+    ##
+    annotations:
+    ## Persistent Volume Access Mode
+    ##
+    accessMode: ReadWriteOnce
+    ## Persistent Volume size
+    ##
+    size: 2Gi
+
+
+readinessCheck:
+  wait_for:
+    - '{{ include "common.name" . }}'
+
+## TLS configuration
+##
+tls:
+  ## Enable TLS
+  ##
+  enabled: false
+  ## Name of the secret that contains the certificates
+  ##
+  # certificatesSecret:
+  ## Certificate filename
+  ##
+  # certFilename:
+  ## Certificate Key filename
+  ##
+  # certKeyFilename:
+  ## CA Certificate filename
+  ##
+  # certCAFilename:
+
+## Configure MariaDB with a custom my.cnf file
+## ref: https://mysql.com/kb/en/mysql/configuring-mysql-with-mycnf/#example-of-configuration-file
+## Alternatively, you can put your my.cnf under the files/ directory
+##
+mariadbConfiguration: |-
+  [client]
+  port=3306
+  socket=/opt/bitnami/mariadb/tmp/mysql.sock
+  plugin_dir=/opt/bitnami/mariadb/plugin
+
+  [mysqld]
+  lower_case_table_names = 1
+  default_storage_engine=InnoDB
+  basedir=/opt/bitnami/mariadb
+  datadir=/bitnami/mariadb/data
+  plugin_dir=/opt/bitnami/mariadb/plugin
+  tmpdir=/opt/bitnami/mariadb/tmp
+  socket=/opt/bitnami/mariadb/tmp/mysql.sock
+  pid_file=/opt/bitnami/mariadb/tmp/mysqld.pid
+  bind_address=0.0.0.0
+
+  ## Character set
+  collation_server=utf8_unicode_ci
+  init_connect='SET NAMES utf8'
+  character_set_server=utf8
+
+  ## MyISAM
+  key_buffer_size=32M
+  myisam_recover_options=FORCE,BACKUP
+
+  ## Safety
+  skip_host_cache
+  skip_name_resolve
+  max_allowed_packet=16M
+  max_connect_errors=1000000
+  sql_mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ONLY_FULL_GROUP_BY
+  sysdate_is_now=1
+
+  ## Binary Logging
+  log_bin=mysql-bin
+  expire_logs_days=14
+  # Disabling for performance per http://severalnines.com/blog/9-tips-going-production-galera-cluster-mysql
+  sync_binlog=0
+  # Required for Galera
+  binlog_format=row
+
+  ## Caches and Limits
+  tmp_table_size=32M
+  max_heap_table_size=32M
+  # Re-enabling as now works with Maria 10.1.2
+  query_cache_type=1
+  query_cache_limit=4M
+  query_cache_size=256M
+  max_connections=500
+  thread_cache_size=50
+  open_files_limit=65535
+  table_definition_cache=4096
+  table_open_cache=4096
+
+  ## InnoDB
+  innodb=FORCE
+  innodb_strict_mode=1
+  # Mandatory per https://github.com/codership/documentation/issues/25
+  innodb_autoinc_lock_mode=2
+  # Per https://www.percona.com/blog/2006/08/04/innodb-double-write/
+  innodb_doublewrite=1
+  innodb_flush_method=O_DIRECT
+  innodb_log_files_in_group=2
+  innodb_log_file_size=128M
+  innodb_flush_log_at_trx_commit=1
+  innodb_file_per_table=1
+  # 80% Memory is default reco.
+  # Need to re-evaluate when DB size grows
+  innodb_buffer_pool_size=2G
+  innodb_file_format=Barracuda
+
+  ## Logging
+  log_error=/opt/bitnami/mariadb/logs/mysqld.log
+  slow_query_log_file=/opt/bitnami/mariadb/logs/mysqld.log
+  log_queries_not_using_indexes=1
+  slow_query_log=1
+
+  ## SSL
+  ## Use extraVolumes and extraVolumeMounts to mount /certs filesystem
+  # ssl_ca=/certs/ca.pem
+  # ssl_cert=/certs/server-cert.pem
+  # ssl_key=/certs/server-key.pem
+
+  [galera]
+  wsrep_on=ON
+  wsrep_provider=/opt/bitnami/mariadb/lib/libgalera_smm.so
+  wsrep_sst_method=mariabackup
+  wsrep_slave_threads=4
+  wsrep_cluster_address=gcomm://
+  wsrep_cluster_name=galera
+  wsrep_sst_auth="root:"
+  # Enabled for performance per https://mariadb.com/kb/en/innodb-system-variables/#innodb_flush_log_at_trx_commit
+  innodb_flush_log_at_trx_commit=2
+  # MYISAM REPLICATION SUPPORT #
+  wsrep_replicate_myisam=ON
+
+  [mariadb]
+  plugin_load_add=auth_pam
+
+  ## Data-at-Rest Encryption
+  ## Use extraVolumes and extraVolumeMounts to mount /encryption filesystem
+  # plugin_load_add=file_key_management
+  # file_key_management_filename=/encryption/keyfile.enc
+  # file_key_management_filekey=FILE:/encryption/keyfile.key
+  # file_key_management_encryption_algorithm=AES_CTR
+  # encrypt_binlog=ON
+  # encrypt_tmp_files=ON
+
+  ## InnoDB/XtraDB Encryption
+  # innodb_encrypt_tables=ON
+  # innodb_encrypt_temporary_tables=ON
+  # innodb_encrypt_log=ON
+  # innodb_encryption_threads=4
+  # innodb_encryption_rotate_key_age=1
 
-#repository: mysql
-image: adfinissygroup/k8s-mariadb-galera-centos:v002
-pullPolicy: IfNotPresent
+  ## Aria Encryption
+  # aria_encrypt_tables=ON
+  # encrypt_tmp_disk_tables=ON
 
-# application configuration
-config:
-  # .mariadbRootPasswordExternalSecret: 'some-external-secret'
-  # mariadbRootPassword: secretpassword
-  # .userCredentialsExternalSecret: 'some-external-secret'
-  userName: my-user
-  # userPassword: my-password
-  # mysqlDatabase: my-database
+## MariaDB additional command line flags
+## Can be used to specify command line flags, for example:
+##
+## extraFlags: "--max-connect-errors=1000 --max_connections=155"
 
-# default number of instances in the StatefulSet
+## Desired number of cluster nodes
+##
 replicaCount: 3
 
-nodeSelector: {}
+## updateStrategy for MariaDB Master StatefulSet
+## ref: https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#update-strategies
+##
+updateStrategy:
+  type: RollingUpdate
+
+## Additional pod annotations for MariaDB Galera pods
+## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
+##
+podAnnotations: {}
+
+## Pod affinity preset
+## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity
+## Allowed values: soft, hard
+##
+podAffinityPreset: ""
+
+## Pod anti-affinity preset
+## Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity
+## Allowed values: soft, hard
+##
+podAntiAffinityPreset: soft
+
+## Node affinity preset
+## Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#node-affinity
+## Allowed values: soft, hard
+##
+nodeAffinityPreset:
+  ## Node affinity type
+  ## Allowed values: soft, hard
+  type: ""
+  ## Node label key to match
+  ## E.g.
+  ## key: "kubernetes.io/e2e-az-name"
+  ##
+  key: ""
+  ## Node label values to match
+  ## E.g.
+  ## values:
+  ##   - e2e-az1
+  ##   - e2e-az2
+  ##
+  values: []
 
+## Affinity for pod assignment. Evaluated as a template.
+## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+## Note: podAffinityPreset, podAntiAffinityPreset, and nodeAffinityPreset will be ignored when it's set
+##
 affinity: {}
 
-# probe configuration parameters
-liveness:
-  initialDelaySeconds: 30
-  periodSeconds: 10
-  timeoutSeconds: 5
-  # necessary to disable liveness probe when setting breakpoints
-  # in debugger so K8s doesn't restart unresponsive container
-  enabled: true
+## Node labels for pod assignment. Evaluated as a template.
+## ref: https://kubernetes.io/docs/user-guide/node-selection/
+##
+nodeSelector: {}
 
-readiness:
-  initialDelaySeconds: 15
-  periodSeconds: 10
-  timeoutSeconds: 5
+## Tolerations for pod assignment. Evaluated as a template.
+## ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+##
+tolerations: []
 
-## Persist data to a persitent volume
+## Enable persistence using Persistent Volume Claims
+## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
+##
 persistence:
-  enabled:  true
-
-  ## A manually managed Persistent Volume and Claim
-  ## Requires persistence.enabled: true
-  ## If defined, PVC must be created manually before volume will be bound
+  ## If true, use a Persistent Volume Claim, If false, use emptyDir
+  ##
+  enabled: true
+  # Enable persistence using an existing PVC
   # existingClaim:
-  volumeReclaimPolicy: Retain
-
-  ## database data Persistent Volume Storage Class
+  mountPath: /dockerdata-nfs
+  mountSubPath: "mariadb-galera/data"
+  ## selector can be used to match an existing PersistentVolume
+  ## selector:
+  ##   matchLabels:
+  ##     app: my-app
+  selector: {}
+  ## Persistent Volume Storage Class
   ## If defined, storageClassName: <storageClass>
   ## If set to "-", storageClassName: "", which disables dynamic provisioning
   ## If undefined (the default) or set to null, no storageClassName spec is
@@ -94,53 +446,34 @@ persistence:
   ##   GKE, AWS & OpenStack)
   ##
   # storageClass: "-"
+  ## Persistent Volume Claim annotations
+  ##
+  annotations:
+  ## Persistent Volume Access Mode
+  ##
   accessMode: ReadWriteOnce
+  ## Persistent Volume size
+  ##
   size: 2Gi
-  mountPath: /dockerdata-nfs
-  mountSubPath: "mariadb-galera/data"
-  mysqlPath: /var/lib/mysql
-  backup:
-    mountPath: /dockerdata-nfs/backup{{- if or (or .Values.storageClassOverride .Values.persistence.storageClass) .Values.global.persistence.storageClass -}}
 
-service:
-  internalPort: 3306
-  name: mariadb-galera
-  portName: mariadb-galera
-  sstPort: 4444
-  sstPortName: sst
-  replicationPort: 4567
-  replicationName: replication
-  istPort: 4568
-  istPortName: ist
-
-ingress:
-  enabled: false
+## Additional pod labels
+##
+# podLabels:
+#   extraLabel: extraValue
 
+## Priority Class Name
+#
+# priorityClassName: 'priorityClass'
 
-## Configure MariaDB-Galera with a custom my.cnf file
-## ref: https://mariadb.com/kb/en/mariadb/configuring-mariadb-with-mycnf/#example-of-configuration-file
-##
-#externalConfig: ""
-externalConfig: |-
-   [mysqld]
-   lower_case_table_names = 1
-
-#resources: {}
-  # We usually recommend not to specify default resources and to leave this as a conscious
-  # choice for the user. This also increases chances charts run on environments with little
-  # resources, such as Minikube. If you do want to specify resources, uncomment the following
-  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
-  #
-  # Example:
-  # Configure resource requests and limits
-  # ref: http://kubernetes.io/docs/user-guide/compute-resources/
-  # Minimum memory for development is 2 CPU cores and 4GB memory
-  # Minimum memory for production is 4 CPU cores and 8GB memory
+## MariaDB Galera containers' resource requests and limits
+## ref: http://kubernetes.io/docs/user-guide/compute-resources/
+##
+flavor: small
 resources:
   small:
     limits:
       cpu: 500m
-      memory: 1.5Gi
+      memory: 2.5Gi
     requests:
       cpu: 100m
       memory: 750Mi
@@ -153,13 +486,134 @@ resources:
       memory: 2Gi
   unlimited: {}
 
-# Name for mariadb-galera cluster - should be unique accross all projects or other clusters
-nameOverride: mariadb-galera
+## MariaDB Galera containers' liveness and readiness probes
+## ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#container-probes
+##
+livenessProbe:
+  enabled: true
+  ## Initializing the database could take some time
+  ##
+  initialDelaySeconds: 150
+  periodSeconds: 10
+  timeoutSeconds: 1
+  successThreshold: 1
+  failureThreshold: 3
+readinessProbe:
+  enabled: true
+  initialDelaySeconds: 60
+  periodSeconds: 10
+  timeoutSeconds: 1
+  successThreshold: 1
+  failureThreshold: 3
 
-# DNS name for mariadb-galera cluster - should be unique accross all projects other clusters
-#dnsnameOverride: mariadb-galera
+## Pod disruption budget configuration
+##
+podDisruptionBudget:
+  ## Specifies whether a Pod disruption budget should be created
+  ##
+  create: true
+  minAvailable: 1
+  # maxUnavailable: 1
 
-backup:
-  enabled: false
-  cron: "00 00 * * *"
-  retentionPeriod: 3
+## Prometheus exporter configuration
+##
+metrics:
+  ## Bitnami MySQL Prometheus exporter image
+  ## ref: https://hub.docker.com/r/bitnami/mysqld-exporter/tags/
+  ##
+  image: bitnami/mysqld-exporter:0.12.1-debian-10-r264
+  pullPolicy: Always
+  ## MySQL exporter additional command line flags
+  ## Can be used to specify command line flags
+  ## E.g.:
+  ## extraFlags:
+  ##   - --collect.binlog_size
+  ##
+  extraFlags: []
+  ## MySQL Prometheus exporter containers' resource requests and limits
+  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
+  ##
+  resources:
+    # We usually recommend not to specify default resources and to leave this as a conscious
+    # choice for the user. This also increases chances charts run on environments with little
+    # resources, such as Minikube. If you do want to specify resources, uncomment the following
+    # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+    limits:
+      cpu: 0.5
+      memory: 256Mi
+    requests:
+      cpu: 0.5
+      memory: 256Mi
+  ## MySQL Prometheus exporter service parameters
+  ##
+  service:
+    type: ClusterIP
+    port: 9104
+    annotations:
+      prometheus.io/scrape: "true"
+      prometheus.io/port: "9104"
+
+  ## Prometheus Operator ServiceMonitor configuration
+  ##
+  serviceMonitor:
+    enabled: false
+    ## Namespace in which Prometheus is running
+    ##
+    # namespace: monitoring
+
+    ## Interval at which metrics should be scraped.
+    ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#endpoint
+    ##
+    # interval: 10s
+
+    ## Timeout after which the scrape is ended
+    ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#endpoint
+    ##
+    # scrapeTimeout: 10s
+
+    ## ServiceMonitor selector labels
+    ## ref: https://github.com/bitnami/charts/tree/master/bitnami/prometheus-operator#prometheus-configuration
+    ##
+    selector:
+      prometheus: kube-prometheus
+
+    ## RelabelConfigs to apply to samples before scraping
+    ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#relabelconfig
+    ## Value is evalued as a template
+    ##
+    relabelings: []
+
+    ## MetricRelabelConfigs to apply to samples before ingestion
+    ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#relabelconfig
+    ## Value is evalued as a template
+    ##
+    metricRelabelings: []
+    #  - sourceLabels:
+    #      - "__name__"
+    #    targetLabel: "__name__"
+    #    action: replace
+    #    regex: '(.*)'
+    #    replacement: 'example_prefix_$1'
+
+  ## Prometheus Operator PrometheusRule configuration
+  ##
+  prometheusRules:
+    enabled: false
+
+    ## Additional labels to add to the PrometheusRule so it is picked up by the operator.
+    ## If using the [Helm Chart](https://github.com/helm/charts/tree/master/stable/prometheus-operator) this is the name of the Helm release and 'app: prometheus-operator'
+    selector:
+      app: prometheus-operator
+      release: prometheus
+
+    ## Rules as a map.
+    rules: {}
+    #  - alert: MariaDB-Down
+    #    annotations:
+    #      message: 'MariaDB instance {{ $labels.instance }} is down'
+    #      summary: MariaDB instance is down
+    #    expr: absent(up{job="mariadb-galera"} == 1)
+    #    labels:
+    #      severity: warning
+    #      service: mariadb-galera
+    #    for: 5m