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Diffstat (limited to 'kubernetes/mysql/templates/statefulset.yaml')
| -rw-r--r-- | kubernetes/mysql/templates/statefulset.yaml | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/kubernetes/mysql/templates/statefulset.yaml b/kubernetes/mysql/templates/statefulset.yaml new file mode 100644 index 0000000000..7b55bf2be0 --- /dev/null +++ b/kubernetes/mysql/templates/statefulset.yaml @@ -0,0 +1,238 @@ +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 }} |