在Kubernates中设置PostgreSQL时出错

Question

我正在尝试在我的支持Kubernates的Docker桌面上设置postgres。我从Docker Hub上提取了图片'postgres:latest‘和'dpage/pgadmin4:latest’。下面是我的yaml文件。一切都开始得很完美。我可以从Chrome打开pgAdmin页面。我在yaml文件中给出的证书没有让我登录。导致此问题的原因是什么？

postgres Db:-

apiVersion: v1
kind: ConfigMap
metadata:
  name: postgres-config
  labels:
    app: postgres
data:
  POSTGRES_DB: app
  POSTGRES_USER: postgres
  POSTGRES_PASSWORD: password
---
kind: PersistentVolume
apiVersion: v1
metadata:
  name: postgres-pv-volume
  labels:
    type: local
    app: postgres
spec:
  storageClassName: manual
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteMany
  hostPath:
    path: "/mnt/data"
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: postgres-pv-claim
  labels:
    app: postgres
spec:
  storageClassName: manual
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 5Gi


---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
      - name: postgres
        image: postgres:latest
        imagePullPolicy: Never
        ports:
        - containerPort: 5432
        envFrom:
            - configMapRef:
                name: postgres-config
        volumeMounts:
            - mountPath: /var/lib/postgresql/data
              name: app
      volumes:
        - name: app
          persistentVolumeClaim:
            claimName: postgres-pv-claim
---
apiVersion: v1
kind: Service
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  type: NodePort
  ports:
   - port: 5432
  selector:
   app: postgres

pgAdmin :-

apiVersion: v1
kind: ConfigMap
metadata:
  name: pgadmin-config
  labels:
    app: pgadmin4
data:
  PGADMIN_DEFAULT_EMAIL: ap@a.com
  PGADMIN_DEFAULT_PASSWORD: posdt

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: pgadmin4
  labels:
    app: pgadmin4
spec:
  replicas: 1
  selector:
    matchLabels:
      app: pgadmin4
  template:
    metadata:
      labels:
        app: pgadmin4
    spec:
      containers:
      - name: pgadmin4
        image: dpage/pgadmin4:latest
        imagePullPolicy: Never
        ports:
        - containerPort: 80
        envFrom:
            - configMapRef:
                name: pgadmin-config
---
apiVersion: v1
kind: Service
metadata:
  name: pgadmin4
  labels:
    app: pgadmin4
spec:
  type: NodePort
  ports:
   - port: 80
  selector:
   app: pgadmin4

Answer 1

我刚刚部署并能够连接数据库。见下文

postgres-7cb54957dd-qkfd4   1/1     Running             0          13s
# kubectl exec -it postgres-7cb54957dd-qkfd4 sh
# psql -h 127.0.0.1 -U postgres -q -d app -c 'SELECT 1'
 ?column?
----------
        1
(1 row)

在YAML下面使用，稍加修改

apiVersion: v1
kind: ConfigMap
metadata:
  name: postgres-config
  labels:
    app: postgres
data:
  POSTGRES_DB: app
  POSTGRES_USER: postgres
  POSTGRES_PASSWORD: password
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
      - name: postgres
        image: postgres:latest
        imagePullPolicy: Always
        ports:
        - containerPort: 5432
        envFrom:
            - configMapRef:
                name: postgres-config
        volumeMounts:
            - mountPath: /var/lib/postgresql/data
              name: app
      volumes:
        - name: app
          emptyDir: {}
---
apiVersion: v1
kind: Service
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  type: NodePort
  ports:
   - port: 5432
  selector:
   app: postgres