Add Common Helm Chart "mariadb-galera"

A new common helm chart that will deploy a Galera cluster for MariaDB.
Please note that this chart is still work in progress and more features
will be added or improved.

Change-Id: Ia4487666798f83d2869c35bcfaacc5516068f194
Issue-ID: OOM-758
Signed-off-by: vitalied <vitalied@amdocs.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/kubernetes/common/mariadb-galera/templates/statefulset.yaml b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
new file mode 100644
index 0000000000..b8ba75e52c
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
@@ -0,0 +1,119 @@
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.fullname" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+spec:
+  serviceName: {{ include "common.fullname" . }}
+  replicas: {{ .Values.replicaCount }}
+  template:
+    metadata:
+      labels:
+        app: {{ include "common.fullname" . }}
+      annotations:
+        pod.alpha.kubernetes.io/initialized: "true"
+    spec:
+    {{- if .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml .Values.nodeSelector | indent 8 }}
+    {{- end }}
+      volumes:
+      {{- if .Values.externalConfig }}
+        - name: config
+          configMap:
+            name: {{ include "common.fullname" . }}-externalConfig
+      {{- end}}
+        - name: localtime
+          hostPath:
+            path: /etc/localtime
+      imagePullSecrets:
+      - name: {{ include "common.namespace" . }}-docker-registry-key
+      containers:
+        - name: {{ include "common.fullname" . }}
+          image: "{{ .Values.global.repository | default .Values.repository }}/{{ .Values.image }}"
+          imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy | quote}}
+          env:
+            - name: POD_NAMESPACE
+              valueFrom:
+                fieldRef:
+                  apiVersion: v1
+                  fieldPath: metadata.namespace
+            - name: MYSQL_USER
+              value: {{ default "" .Values.config.userName | quote }}
+            - name: MYSQL_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ template "common.fullname" . }}
+                  key: user-password
+            - name: MYSQL_DATABASE
+              value: {{ default "" .Values.config.mysqlDatabase | quote }}
+            - name: MYSQL_ROOT_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ template "common.fullname" . }}
+                  key: db-root-password
+          ports:
+          - containerPort: {{ .Values.service.internalPort }}
+            name: {{ .Values.service.name }}
+          - containerPort: {{ .Values.service.sstPort }}
+            name: {{ .Values.service.sstName }}
+          - containerPort: {{ .Values.service.replicationPort }}
+            name: {{ .Values.service.replicationName }}
+          - containerPort: {{ .Values.service.istPort }}
+            name: {{ .Values.service.istName }}
+          readinessProbe:
+            exec:
+              command:
+              - /usr/share/container-scripts/mysql/readiness-probe.sh
+            initialDelaySeconds: {{ .Values.readiness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.readiness.periodSeconds }}
+      {{- if eq .Values.liveness.enabled true }}
+          livenessProbe:
+            exec:
+              command: ["mysqladmin", "ping"]
+            initialDelaySeconds: {{ .Values.liveness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.liveness.periodSeconds }}
+            timeoutSeconds: {{ .Values.liveness.timeoutSeconds }}
+      {{- end }}
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+          volumeMounts:
+        {{- if .Values.externalConfig }}
+          - mountPath: /etc/config
+            name: config
+        {{- end}}
+          - mountPath: /etc/localtime
+            name: localtime
+            readOnly: true
+{{- if .Values.persistence.enabled }}
+          - mountPath: /var/lib/mysql
+            name: {{ include "common.fullname" . }}-data
+            subPath: data
+      initContainers:
+        - name: mariadb-galera-prepare
+          image: {{ .Values.global.repository | default .Values.repository }}/{{ .Values.imageInit }}
+          command: ["sh", "-c", "chown -R 27:27 /var/lib/mysql"]
+          volumeMounts:
+            - name: {{ include "common.fullname" . }}-data
+              mountPath: /var/lib/mysql
+  volumeClaimTemplates:
+  - metadata:
+      name: {{ include "common.fullname" . }}-data
+      annotations:
+  {{- if .Values.persistence.storageClass }}
+        volume.beta.kubernetes.io/storage-class: {{ .Values.persistence.storageClass | quote }}
+  {{- else }}
+        volume.alpha.kubernetes.io/storage-class: default
+  {{- end }}
+    spec:
+      accessModes:
+      - {{ .Values.persistence.accessMode | quote }}
+      resources:
+        requests:
+          storage: {{ .Values.persistence.size | quote }}
+{{- end }}
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