K8s部署postgresql

一 前言

我这里是使用deployment 部署的一般用于测试和开发环境服务需求,生产环境建议还是使用公有云

二 部署

2.1 配置持久卷

我这里sc使用的rbd的storageclass

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: ceph-postgresql
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: rook-cephfs

2.2 配置deploy

apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgresql
  labels:
    app: gitlab
    tier: postgreSQL
spec:
  replicas: 1
  selector:
    matchLabels:
      app: gitlab
      tier: postgreSQL
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: gitlab
        tier: postgreSQL
    spec:
      containers:
        - image: postgres:12.6-alpine
          name: postgresql
          env:
            - name: POSTGRES_USER
              value: gitlab
            - name: POSTGRES_DB
              value: gitlabhq_production
            - name: POSTGRES_PASSWORD
              value: bogeusepg
            - name: TZ
              value: Asia/Shanghai
          ports:
            - containerPort: 5432
              name: postgresql
          livenessProbe:
            exec:
              command:
              - sh
              - -c
              - exec pg_isready -U gitlab -h 127.0.0.1 -p 5432 -d gitlabhq_production
            initialDelaySeconds: 110
            timeoutSeconds: 5
            failureThreshold: 6
          readinessProbe:
            exec:
              command:
              - sh
              - -c
              - exec pg_isready -U gitlab -h 127.0.0.1 -p 5432 -d gitlabhq_production
            initialDelaySeconds: 20
            timeoutSeconds: 3
            periodSeconds: 5
          resources:
            requests:
              cpu: 100m
              memory: 512Mi
            limits:
              cpu: "1"
              memory: 1Gi
          volumeMounts:
            - name: postgresql
              mountPath: /var/lib/postgresql/data
      volumes:
        - name: postgresql
          persistentVolumeClaim:
            claimName: ceph-postgresql

2.3 创建svc

apiVersion: v1
kind: Service
metadata:
  name: postgresql
  labels:
    app: gitlab
    tier: postgreSQL
spec:
  ports:
    - port: 5432
  selector:
    app: gitlab
    tier: postgreSQL