Galera petset

galera-statefulset.yml

apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: mysql
spec:
  serviceName: "galera"
  replicas: 3
  template:
    metadata:
      labels:
        app: mysql
      annotations:
        pod.alpha.kubernetes.io/init-containers: '[
            {
                "name": "install",
                "image": "gcr.io/google_containers/galera-install:0.1",
                "imagePullPolicy": "Always",
                "args": ["--work-dir=/work-dir"],
                "volumeMounts": [
                    {
                        "name": "workdir",
                        "mountPath": "/work-dir"
                    },
                    {
                        "name": "config",
                        "mountPath": "/etc/mysql"
                    }
                ]
            },
            {
                "name": "bootstrap",
                "image": "debian:jessie",
                "command": ["/work-dir/peer-finder"],
                "args": ["-on-start=\"/work-dir/on-start.sh\"", "-service=galera"],
                "env": [
                  {
                      "name": "POD_NAMESPACE",
                      "valueFrom": {
                          "fieldRef": {
                              "apiVersion": "v1",
                              "fieldPath": "metadata.namespace"
                          }
                      }
                   }
                ],
                "volumeMounts": [
                    {
                        "name": "workdir",
                        "mountPath": "/work-dir"
                    },
                    {
                        "name": "config",
                        "mountPath": "/etc/mysql"
                    }
                ]
            }
        ]'
    spec:
      nodeSelector:
        galera: true
      containers:
      - name: mysql
        image: gcr.io/google_containers/mysql-galera:e2e
        ports:
        - containerPort: 3306
          name: mysql
        - containerPort: 4444
          name: sst
        - containerPort: 4567
          name: replication
        - containerPort: 4568
          name: ist
        args:
        - --defaults-file=/etc/mysql/my-galera.cnf
        - --user=root
        readinessProbe:
          # TODO: If docker exec is buggy just use gcr.io/google_containers/mysql-healthz:1.0
          exec:
            command:
            - sh
            - -c
            - "mysql -u root -e 'show databases;'"
          initialDelaySeconds: 15
          timeoutSeconds: 5
          successThreshold: 2
        volumeMounts:
        - name: datadir
          mountPath: /var/lib/
        - name: config
          mountPath: /etc/mysql
      volumes:
      - name: config
        emptyDir: {}
      - name: workdir
        emptyDir: {}
  volumeClaimTemplates:
  - metadata:
      name: datadir
      annotations:
        volume.alpha.kubernetes.io/storage-class: anything
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 1Gi