插件安装

安装Kubernetes需要的插件

• Kubernetes :: Pipeline :: DevOps Steps
• Kubernetes CLI Plugin
• Kubernetes plugin
• Kubernetes Credentials Plugin

创建token并绑定

kubectl create sa jenkins kubectl create clusterrolebinding jenkins --clusterrole cluster-admin --serviceaccount=default:jenkins

apiVersion: v1

kind: Secret

metadata:

  name: secret-sa-jenkins

  namespace: default

  annotations:

    kubernetes.io/service-account.name: "jenkins"

type: kubernetes.io/service-account-token

kubectl apply -f jenkins_token.yaml kubectl describe sa jenkins -n default kubectl describe secrets secret-sa-jenkins -n default

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主要配置字段说明：

• Kubernetes 地址

  Kubernetes中Api-server的地址，具体可以通过cat ~/.kube/config来进行查看

• Kubernetes 命名空间

  jenkins-agent的pod默认执行的命名空间。

• 凭据

  用于访问Kubernetes集群的凭据,选择上面添加到凭据

• Jenkins 地址

  是Jenkins-agent在启动时回调的地址，如果填写错误，则会出现重复创建pod的情况

配给K8S集群到Jenkins

流水线调用k8s集群

stage('K8S部署') {

            when {

                branch 'master'

            }

            steps {

                // Get some code from a GitHub repository

                echo "验证kubectl"

                echo pwd

                withCredentials([file(credentialsId: 'kubeconfig', variable: 'KUBECONFIG')]) {

                echo "查看 K8S 集群 Pod 列表"

                sh "mkdir -p ~/.kube && cp ${KUBECONFIG} ~/.kube/config"

                sh 'kubectl get pod -A'

                sh "kubectl set image  deployment/${env.BACKEND_POD} -n ${env.NAMESPACE} ${env.BACKEND_CONTAINER}=55.235.30.100:60000/platform/jenkins-${env.BACKEND_NAME}:${env.VERSION}"

                sh "kubectl rollout restart deployment/${env.BACKEND_POD} -n ${env.NAMESPACE}"

                sh "kubectl describe deployment ${env.BACKEND_POD} -n  ${env.NAMESPACE}"

                }

            }

        }