jenkins 部署到k8s中使用宿主機Docker及kubectl的配置方式記錄

# jenkins使用官方yaml部署，記錄在jenkins 容器中調用主機Docker 進行build
# 由於maven編譯需要jdk，在jenkins中可以配置oracle賬號選擇jdk版本自動下載，但oracle網站有時不穩定造成jdk無法下載，所以以下為離線jdk部署方式
# 離線配置jdk方式：下載jdk包並解壓到/mnt/data/jenkins_home/tools/hudson.model.JDK/jdk8/目錄下，在jenkins中配置jdk相對路徑/var/jenkins_home/tools/hudson.model.JDK/jdk8/jdk1.8.0_221（jdk8后面路徑要和解壓后的jdk路徑一致）
# jenkins使用主機vm docker時需要掛載宿主機docker的幾個路徑並設置宿主機docker.sock權限：chmod 777 /var/run/docker.sock 

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  namespace: monitor-app
  name: jenkins
  labels:
    name: jenkins
spec:
  selector:
    matchLabels:
      name: jenkins
  serviceName: jenkins
  replicas: 1
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      name: jenkins
      labels:
        name: jenkins
    spec:
      terminationGracePeriodSeconds: 10
      serviceAccountName: jenkins
      nodeSelector:
        jtype: jenkins
      containers:
        - name: jenkins
          command:
            - /sbin/tini
            - /usr/local/bin/jenkins.sh
            - --prefix=/jenkins
          image: jenkins/jenkins:lts-alpine
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 8080
            - containerPort: 50000
          resources:
            limits:
              cpu: 1
              memory: 2Gi
            requests:
              cpu: 0.5
              memory: 500Mi
          env:
            - name: LIMITS_MEMORY
              valueFrom:
                resourceFieldRef:
                  resource: limits.memory
                  divisor: 1Mi
            - name: JAVA_OPTS
              # value: -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -XX:MaxRAMFraction=1 -XshowSettings:vm -Dhudson.slaves.NodeProvisioner.initialDelay=0 -Dhudson.slaves.NodeProvisioner.MARGIN=50 -Dhudson.slaves.NodeProvisioner.MARGIN0=0.85
              value: -Xmx$(LIMITS_MEMORY)m -XshowSettings:vm -Dhudson.slaves.NodeProvisioner.initialDelay=0 -Dhudson.slaves.NodeProvisioner.MARGIN=50 -Dhudson.slaves.NodeProvisioner.MARGIN0=0.85 -D--prefix=/jenkins
          volumeMounts:
            - name: jenkins-home
              mountPath: /var/jenkins_home
#            - name: docker
#              mountPath: /usr/bin/docker
#            - name: docker-sock
#              mountPath: /var/run/docker.sock
#            - name: docker-login
#              mountPath: /root/.docker/config.json #將docker登錄信息掛載到容器中
 
          livenessProbe:
            httpGet:
              path: /jenkins/login
              port: 8080
            initialDelaySeconds: 60
            timeoutSeconds: 5
            failureThreshold: 12 # ~2 minutes
          readinessProbe:
            httpGet:
              path: /jenkins/login
              port: 8080
            initialDelaySeconds: 60
            timeoutSeconds: 5
            failureThreshold: 12
      securityContext:
        fsGroup: 1000
      volumes:
        - name: jenkins-home
          hostPath:
            path: /mnt/data/jenkins
#        - name: docker
#          hostPath:
#            path: /usr/bin/docker
#        - name: docker-sock
#          hostPath:
#            path: /var/run/docker.sock
#         - hostPath:
#             path: /root/.docker/config.json
#           name: docker-login

#         - hostPath: # path: /usr/bin/kubectl # name: kubectl

     

---
apiVersion: v1
kind: Service
metadata:
  name: jenkins
  namespace: monitor-app
spec:
  selector:
    name: jenkins
  ports:
    - name: http
      port: 8066
      targetPort: 8080
      protocol: TCP
    - name: agent
      port: 50000
      protocol: TCP