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-rw-r--r--kubernetes/mysql/templates/statefulset.yaml238
1 files changed, 238 insertions, 0 deletions
diff --git a/kubernetes/mysql/templates/statefulset.yaml b/kubernetes/mysql/templates/statefulset.yaml
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+++ b/kubernetes/mysql/templates/statefulset.yaml
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+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+ name: {{ include "common.fullname" . }}
+ namespace: {{ include "common.namespace" . }}
+ labels:
+ app: {{ include "common.name" . }}
+ chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
+ release: {{ .Release.Name }}
+ heritage: {{ .Release.Service }}
+spec:
+ serviceName: {{ .Values.service.name }}
+ replicas: {{ .Values.replicaCount }}
+ template:
+ metadata:
+ labels:
+ app: {{ include "common.name" . }}
+ release: {{ .Release.Name }}
+ spec:
+ initContainers:
+#{{ if not .Values.disableNfsProvisioner }}
+ - name: {{ include "common.name" . }}-readiness
+ command:
+ - /root/ready.py
+ args:
+ - --container-name
+ - {{ .Values.nfsprovisionerPrefix }}-nfs-provisioner
+ env:
+ - name: NAMESPACE
+ valueFrom:
+ fieldRef:
+ apiVersion: v1
+ fieldPath: metadata.namespace
+ image: "{{ .Values.global.readinessRepository }}/{{ .Values.global.readinessImage }}"
+ imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+#{{ end }}
+ - name: init-mysql
+ image: "{{ .Values.repository | default .Values.repository }}/{{ .Values.image }}"
+ imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+ command:
+ - bash
+ - "-c"
+ - |
+ set -ex
+ # Generate mysql server-id from pod ordinal index.
+ [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
+ ordinal=${BASH_REMATCH[1]}
+ echo BASH_REMATCH=${BASH_REMATCH}
+ echo [mysqld] > /mnt/conf.d/server-id.cnf
+ # Add an offset to avoid reserved server-id=0 value.
+ echo server-id=$((100 + $ordinal)) >> /mnt/conf.d/server-id.cnf
+ # Copy appropriate conf.d files from config-map to emptyDir.
+ if [[ $ordinal -eq 0 ]]; then
+ cp /mnt/config-map/master.cnf /mnt/conf.d/
+ else
+ cp /mnt/config-map/slave.cnf /mnt/conf.d/
+ fi
+ volumeMounts:
+ - name: conf
+ mountPath: /mnt/conf.d
+ - name: config-map
+ mountPath: /mnt/config-map
+
+ - name: clone-mysql
+ image: "{{ .Values.global.xtrabackupRepository | default .Values.xtrabackupRepository }}/{{ .Values.xtrabackupImage }}"
+ imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+ env:
+ - name: MYSQL_ROOT_PASSWORD
+ valueFrom:
+ secretKeyRef:
+ name: {{ template "common.fullname" . }}
+ key: db-root-password
+ command:
+ - bash
+ - "-c"
+ - |
+ set -ex
+ # Skip the clone if data already exists.
+ [[ -d /var/lib/mysql/mysql ]] && exit 0
+ # Skip the clone on master (ordinal index 0).
+ [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
+ ordinal=${BASH_REMATCH[1]}
+ echo ${BASH_REMATCH}
+ [[ $ordinal -eq 0 ]] && exit 0
+ # Clone data from previous peer.
+ ncat --recv-only {{ template "common.name" . }}-$(($ordinal-1)).{{ .Values.service.name }}.{{ include "common.namespace" . }} 3307 | xbstream -x -C /var/lib/mysql
+ # Prepare the backup.
+ xtrabackup --user=root --password=$MYSQL_ROOT_PASSWORD --prepare --target-dir=/var/lib/mysql
+ ls -l /var/lib/mysql
+ volumeMounts:
+ - name: {{ include "common.fullname" . }}-data
+ mountPath: /var/lib/mysql
+ subPath: mysql
+ - name: conf
+ mountPath: /etc/mysql/conf.d
+
+ containers:
+ #sdnc-db-container
+ - name: {{ include "common.name" . }}
+ image: "{{ .Values.repository | default .Values.repository }}/{{ .Values.image }}"
+ imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+ ports:
+ - containerPort: {{ .Values.service.internalPort }}
+ # disable liveness probe when breakpoints set in debugger
+ # so K8s doesn't restart unresponsive container
+ {{- if eq .Values.liveness.enabled true }}
+ livenessProbe:
+ exec:
+ command: ["mysqladmin", "ping"]
+ initialDelaySeconds: {{ .Values.liveness.initialDelaySeconds }}
+ periodSeconds: {{ .Values.liveness.periodSeconds }}
+ timeoutSeconds: {{ .Values.liveness.timeoutSeconds }}
+ {{end -}}
+ readinessProbe:
+ tcpSocket:
+ port: {{ .Values.service.internalPort }}
+ initialDelaySeconds: {{ .Values.readiness.initialDelaySeconds }}
+ periodSeconds: {{ .Values.readiness.periodSeconds }}
+ env:
+ - name: MYSQL_ROOT_PASSWORD
+ valueFrom:
+ secretKeyRef:
+ name: {{ template "common.fullname" . }}
+ key: db-root-password
+ - name: MYSQL_ROOT_HOST
+ value: '%'
+ - name: MYSQL_ALLOW_EMPTY_PASSWORD
+ value: {{ .Values.config.dbAllowEmptyPassword | default "0" | quote }}
+ volumeMounts:
+ - mountPath: /var/lib/mysql
+ name: {{ include "common.fullname" . }}-data
+ subPath: mysql
+ - mountPath: /etc/mysql/conf.d
+ name: conf
+ resources:
+{{ toYaml .Values.resources | indent 12 }}
+ {{- if .Values.nodeSelector }}
+ nodeSelector:
+{{ toYaml .Values.nodeSelector | indent 10 }}
+ {{- end -}}
+ {{- if .Values.affinity }}
+ affinity:
+{{ toYaml .Values.affinity | indent 10 }}
+ {{- end }}
+
+ - name: xtrabackup
+ image: "{{ .Values.global.xtrabackupRepository | default .Values.xtrabackupRepository }}/{{ .Values.xtrabackupImage }}"
+ imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+ env:
+ - name: MYSQL_ROOT_PASSWORD
+ valueFrom:
+ secretKeyRef:
+ name: {{ template "common.fullname" . }}
+ key: db-root-password
+ ports:
+ - containerPort: {{ .Values.xtrabackup.internalPort }}
+ name: xtrabackup
+ command:
+ - bash
+ - "-c"
+ - |
+ set -ex
+ cd /var/lib/mysql
+ ls -l
+ # Determine binlog position of cloned data, if any.
+ if [[ -f xtrabackup_slave_info ]]; then
+ echo "Inside xtrabackup_slave_info"
+ # XtraBackup already generated a partial "CHANGE MASTER TO" query
+ # because we're cloning from an existing slave.
+ mv xtrabackup_slave_info change_master_to.sql.in
+ # Ignore xtrabackup_binlog_info in this case (it's useless).
+ rm -f xtrabackup_binlog_info
+ elif [[ -f xtrabackup_binlog_info ]]; then
+ echo "Inside xtrabackup_binlog_info"
+ # We're cloning directly from master. Parse binlog position.
+ [[ `cat xtrabackup_binlog_info` =~ ^(.*?)[[:space:]]+(.*?)$ ]] || exit 1
+ rm xtrabackup_binlog_info
+ echo "CHANGE MASTER TO MASTER_LOG_FILE='${BASH_REMATCH[1]}',\
+ MASTER_LOG_POS=${BASH_REMATCH[2]}" > change_master_to.sql.in
+ fi
+
+ # Check if we need to complete a clone by starting replication.
+ if [[ -f change_master_to.sql.in ]]; then
+ echo "Waiting for mysqld to be ready (accepting connections)"
+ [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
+ ordinal=${BASH_REMATCH[1]}
+ echo $ordinal
+ until mysql --user=root --password=$MYSQL_ROOT_PASSWORD -h localhost -e "SELECT 1"; do sleep 1; done
+
+ echo "Initializing replication from clone position"
+ # In case of container restart, attempt this at-most-once.
+ mv change_master_to.sql.in change_master_to.sql.orig
+ mysql --user=root --password=$MYSQL_ROOT_PASSWORD -h localhost <<EOF
+ $(<change_master_to.sql.orig),
+ MASTER_HOST="{{ template "common.name" . }}-0.{{ .Values.service.name }}.{{ include "common.namespace" . }}",
+ MASTER_USER="root",
+ MASTER_PASSWORD="$MYSQL_ROOT_PASSWORD",
+ MASTER_CONNECT_RETRY=10;
+ START SLAVE;
+ EOF
+ fi
+
+ # Start a server to send backups when requested by peers.
+ exec ncat --listen --keep-open --send-only --max-conns=1 3307 -c \
+ "xtrabackup --user=root --password=$MYSQL_ROOT_PASSWORD --backup --slave-info --stream=xbstream --host=localhost"
+ volumeMounts:
+ - name: {{ include "common.fullname" . }}-data
+ mountPath: /var/lib/mysql
+ subPath: mysql
+ - name: conf
+ mountPath: /etc/mysql/conf.d
+ volumes:
+ - name: conf
+ emptyDir: {}
+ - name: config-map
+ configMap:
+ name: {{ include "common.fullname" . }}-db-configmap
+ - name: localtime
+ hostPath:
+ path: /etc/localtime
+ - name: {{ include "common.fullname" . }}-data
+#{{ if not .Values.disableNfsProvisioner }}
+ volumeClaimTemplates:
+ - metadata:
+ name: {{ include "common.fullname" . }}-data
+ annotations:
+ volume.beta.kubernetes.io/storage-class: "{{ include "common.fullname" . }}-data"
+ spec:
+ accessModes: ["ReadWriteMany"]
+ resources:
+ requests:
+ storage: 1Gi
+#{{ else if .Values.persistence.enabled }}
+ persistentVolumeClaim:
+ claimName: {{ include "common.fullname" . }}-data
+#{{ else }}
+ emptyDir: {}
+#{{ end }}