k8s部署MongDB全过程

kubectl create ns mongdb

echo -n 'root' | base64
# cm9vdA==
echo -n 'xiaoning' | base64
# eGlhb25pbmc=

# 可自行修改为自己的账号密码，同时注意保存好，下文中创建Secret需要

cat > mongo-secret.yaml

apiVersion: v1
kind: Secret
metadata:
  name: mongodb-secret
  namespace: mongdb
type: Opaque
data:
  # echo -n 'username' | base64
  mongo-root-username: cm9vdA==
  # echo -n 'password' | base64
  mongo-root-password: eGlhb25pbmc=

kubectl create -f mongo-secret.yaml

cat > mongodb-server.yaml

apiVersion: v1
kind: Service
metadata:
  name: mongodb-service
  namespace: mongdb
spec:
  type: NodePort
  selector:
    app: mongodb
  ports:
    - protocol: TCP
      port: 27017
      targetPort: 27017
      nodePort: 30017

kubectl create -f mongodb-server.yaml

cat > mongodb-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mongodb-deployment
  namespace: mongdb
  labels:
    app: mongodb
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mongodb
  template:
    metadata:
      labels:
        app: mongodb
    spec:
      containers:
        - name: mongodb
          image: mongo
          ports:
            - containerPort: 21017
          env:
            - name: MONGO_INITDB_ROOT_USERNAME
              valueFrom:
                secretKeyRef:
                  name: mongodb-secret
                  key: mongo-root-username
            - name: MONGO_INITDB_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mongodb-secret
                  key: mongo-root-password
          volumeMounts:
            - name: mongodb-storage
              mountPath: /data/db
      volumes:
        - name: mongodb-storage
          emptyDir: {}

kubectl create -f mongodb-deployment.yaml