部署

直接上yaml,参考文档:https://github.com/fjc0k/docker-YApi

mongodb.yaml

---
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    app: mongo
  name: mongo
spec:
  selector:
    matchLabels:
      app: mongo
  template:
    metadata:
      labels:
        app: mongo
    spec:
      restartPolicy: Always
      containers:
        - image: mongo:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 27017
          name: mongo
          env:
            - name: MONGO_INITDB_ROOT_USERNAME
              value: "yapi"
            - name: MONGO_INITDB_ROOT_PASSWORD
              value: "admin.yapi"
            - name: MONGO_INITDB_DATABASE
              value: "yapi"
          livenessProbe:
            tcpSocket:
              port: 27017
            initialDelaySeconds: 10
            periodSeconds: 10
            timeoutSeconds: 5
          readinessProbe:
            tcpSocket:
              port: 27017
            initialDelaySeconds: 5
            periodSeconds: 10
            timeoutSeconds: 1
          # 优雅退出
          lifecycle:
            preStop:
              exec:
                command: ["/bin/bash", "-c", "sleep 20"]
          volumeMounts:
            - name: mongo-db
              mountPath: /data/db
      volumes:
        - name: mongo-db
          hostPath:
            path: /data/yapi/mongo
            type: DirectoryOrCreate

---
apiVersion: v1
kind: Service
metadata:
  name: mongo
spec:
  type: ClusterIP
  selector:
    app: mongo
  ports:
  - protocol: TCP
    port: 27017
    targetPort: 27017

yapi.yaml

---
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    app: yapi
  name: yapi
spec:
  selector:
    matchLabels:
      app: yapi
  template:
    metadata:
      labels:
        app: yapi
    spec:
      restartPolicy: Always
      containers:
        - image: jayfong/yapi:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
          name: yapi
          env:
            #管理员账号,禁止注册,默认密码： ymfe.org 登录请修改
            - name: YAPI_ADMIN_ACCOUNT
              value: "admin@qq.com"
            - name: YAPI_ADMIN_PASSWORD
              value: "admin123"
            - name: YAPI_CLOSE_REGISTER
              value: "true"
            #mongodb 配置
            - name: YAPI_DB_SERVERNAME
              value: "mongo.default.svc.cluster.local"
            - name: YAPI_DB_PORT
              value: "27017"
            - name: YAPI_DB_DATABASE
              value: "yapi"
            - name: YAPI_DB_USER
              value: "yapi"
            - name: YAPI_DB_PASS
              value: "admin.yapi"
            - name: YAPI_DB_AUTH_SOURCE
              value: "admin"
            #mail 邮件功能
            - name: YAPI_MAIL_ENABLE
              value: "true"
            - name: YAPI_MAIL_HOST
              value: "smtp.exmail.qq.com"
            - name: YAPI_MAIL_PORT
              value: "465"
            - name: YAPI_MAIL_FROM
              value: "admin@qq.com"
            - name: YAPI_MAIL_AUTH_USER
              value: "xxx"
            - name: YAPI_MAIL_AUTH_PASS
              value: "xxx"
            #ldap 功能
            - name: YAPI_LDAP_LOGIN_ENABLE
              value: "false"
      initContainers:
      - name: init-mongo
        image: busybox
        command: ['sh', '-c', 'until nslookup mongo; do echo waiting for mongo; sleep 2; done;']

---
apiVersion: v1
kind: Service
metadata:
  name: yapi
spec:
  type: NodePort
  selector:
    app: yapi
  ports:
  - protocol: TCP
    port: 3000
    nodePort: 30000

如果给管理员设置账号的同时，你还开启mail 服务的话，管理员登录邮箱得填写 mail 服务发件者账号,不然启动会提示初始化管理员账号密码错误，登录时不可以使用自定义设置的密码，只能使用默认密码(ymfe.org)

• 我在yapi Deployment的Pod定义中添加了initContainers，它会通过检查 momgo
  域名是否可以解析来判断所依赖的mongo服务是否就绪。

• 同时，在mongo Deployment中也引入了readinessProbe 和
  livenessProbe探针，它们会判定是否mongo进程已经业务就绪。在K8S中，只有健康的Pod才可以通过ClusterIP访问或者DNS解析。

  注：
  Liveness探针：主要用于判断Container是否处于运行状态，比如当服务死锁或者响应缓慢等情况。
  Readiness探针：主要用于判断服务是否已经正常工作。
  在init container中不允许使用readiness探针。
  如果Pod重启了，其所有init Container都需重新运行。

方法参考k8s官方文档
https://kubernetes.io/zh/docs/concepts/workloads/pods/init-containers/
https://kubernetes.io/zh/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/

执行

kubectl  apply  -f mongodb.yaml
kubectl  apply  -f yapi.yaml

检查

mongodb启动状态

yapi启动状态

浏览器访问:http:///localhost:30000