Kubectl 不允许对 psql 进行身份验证

Question

我正在尝试为我的 k8s 配置 postgres。 但是在启动 postgres pod 之后，我收到一个错误：

"psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: FATAL:  role "amigoscode" does not exist"

这是我的配置图：

apiVersion: v1
kind: ConfigMap
metadata:
  name: postgres-config
data:
  POSTGRES_DB: amigoscode
  POSTGRES_USER: amigoscode
  POSTGRES_PASSWORD: password

状态集：

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  serviceName: postgres
  replicas: 1
  template:
    metadata:
      name: postgres
      labels:
        app: postgres
    spec:
      volumes:
        - name: postgres
          persistentVolumeClaim:
            claimName: postgres-pc-volume-claim
      containers:
        - name: postgres
          image: postgres
          imagePullPolicy: IfNotPresent
          volumeMounts:
            - mountPath: "/var/lib/postgresql/data"
              name: postgres
          envFrom:
            - configMapRef:
                name: postgres-config
          resources:
            requests:
              cpu: 100m
              memory: 256Mi
            limits:
              cpu: 500m
              memory: 512Mi
      restartPolicy: Always
  selector:
    matchLabels:
      app: postgres

我正在使用 kubectl apply -f <folder_name> 命令来启动和构建我的 postgres-pod

Answer 1

您应该添加这样的服务：

apiVersion: v1
kind: Service
metadata:
  name: postgres
spec:
  type: NodePort
  ports:
   - port: 5432
  selector:
   app: postgres

将容器端口指定到 StatefulSet 中

ports:
  - containerPort: 5432

然后使用以下命令访问数据库：

psql -v -U amigoscode --dbname amigoscode -h <host> <<-EOSQL
   <psql lines> 
EOSQL