templates/mysql-sts.yaml

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---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: {{.Name}}
  namespace: {{.Namespace}}
  labels:
    {{range $k,$v := .Labels }}
    {{$k}}: {{$v}}
    {{end}}
  annotations:
    {{range $k,$v := .Base.Spec.Annotations }}
    {{$k}}: {{$v}}
    {{end}}
spec:
  replicas: {{.Base.Spec.MySQL.Replicas}}
  selector:
    matchLabels:
      {{range $k,$v := .Selector }}
      {{$k}}: {{$v}}
      {{end}}
  updateStrategy:
    type: OnDelete
  podManagementPolicy: OrderedReady
  template:
    metadata:
      labels:
        {{range $k,$v := .Labels }}
        {{$k}}: {{$v}}
        {{end}}
      annotations:
        {{range $k,$v := .Base.Spec.Annotations }}
        {{$k}}: {{$v}}
        {{end}}
    spec:
      ## TODO affinity in code
      terminationGracePeriodSeconds: 30 ## check this change to 180 ?
      #priorityClassName: something
      #securityContext:
      #  fsGroup: 1000
      nodeSelector:
        {{range $k,$v := .Base.Spec.NodeSelector }}
        {{$k}}: {{$v}}
        {{end}}
      #tolerations:
      #initContainers:
      containers:
      - name: mysql
        args:
        - --explicit-defaults-for-timestamp=ON
        env:
        - name: MYSQL_DATABASE
          value: testdb
        - name: MYSQL_USER
          value: airflow
        - name: MYSQL_PASSWORD
          valueFrom:
            secretKeyRef:
              key: password
              name: {{.SecretName}}
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              key: rootpassword
              name: {{.SecretName}}
        image: {{.Base.Spec.MySQL.Image}}:{{.Base.Spec.MySQL.Version}}
        imagePullPolicy: IfNotPresent
        livenessProbe:
          exec:
            command:
            - bash
            - -c
            - mysqladmin -p$MYSQL_ROOT_PASSWORD ping
          failureThreshold: 3
          initialDelaySeconds: 30
          periodSeconds: 20
          successThreshold: 1
          timeoutSeconds: 5
        ports:
        - containerPort: 3306
          name: mysql
          protocol: TCP
        readinessProbe:
          exec:
            command:
            - bash
            - -c
            - mysql -u$MYSQL_USER -p$MYSQL_PASSWORD -e "use testdb"
          failureThreshold: 3
          initialDelaySeconds: 10
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources: {}
        volumeMounts:
        - name: data
          mountPath: /var/lib/mysql
      restartPolicy: Always
      {{if .Base.Spec.MySQL.VolumeClaimTemplate}}
      {{else}}
      volumes:
      - emptyDir: {}
        name: data
      {{end}}