Jenkins file一行代码部署.NET程序到K8S

什么是Jenkins共享库

随着微服务的增多，每个项目的都需要pipline文件，这样的话Pipeline代码冗余度高，并且pipeline的功能越来越复杂。

jenkins可以使用Shared Lib，将一些公共的pipeline抽象做成模块代码，在各种项目pipeline之间复用，以减少冗余。

共享库目录结构

共享库根目录
|-- vars
    |-- test1.groovy
|-- src
    |-- test2.groovy
|-- resources

vars: 依赖于Jenkins运行环境的Groovy脚本。其中的Groovy脚本被称之为全局变量。
src: 标准的Java源码目录结构,其中的Groovy脚本被称为类库(Library class)。
resources: 目录允许从外部库中使用 libraryResource 步骤来加载有关的非 Groovy 文件。

引用共享库的方式

#!/usr/bin/env groovy

// 引用默认配置的共享库
@Library('demo-shared-library') _

// 引用指定分支、tag的共享库代码
@Library('demo-shared-library@1.0') _

// 引用多个指定分支tag的共享库
@Library('demo-shared-library@$Branch/Tag','demo-shared-library-test@$Branch/Tag') _

@Library('utils') import org.foo.Utilities

@Library('utils') import static org.foo.Utilities.*

vars下的全局变量

/vars下的全局变量必须以全小写或驼峰（camelCased）
/vars/*.groovy若实现call()方法，直接引用时默认执行其中的方法

实现一行代码部署.NET程序到K8S

安装Jenkins Master

# master
docker run --name jenkins-blueocean -u root --privileged -d -p 8080:8080 -p 50000:50000 -v D:/architecture/jenkins/data:/var/jenkins_home -v /var/run/docker.sock:/var/run/docker.sock jenkinsci/blueocean 

# 访问：http://ip:8080/
# jenkins密码，查看容器日志: 7285ced325a24483bfdaab227415fdac
# 安装推荐插件

安装Jenkins Agent

 

Manage Jenkins -> Manage Nodes and Clouds -> New Node

• Name: agent2/agent3
• Labels: agentnode
• Launch method: Launch agent by connecting it to the master

Build Agent Docker Image

# slave
# Dockerfile
FROM jenkins/inbound-agent:latest
USER root

RUN apt-get update
RUN apt-get -y install ca-certificates curl gnupg lsb-release
RUN curl -fsSL https://get.docker.com -o get-docker.sh
RUN sh get-docker.sh

RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
RUN install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
RUN kubectl version --client

ENV JMETER_VERSION=5.4.1
ENV JMETER_HOME=/jmeter/apache-jmeter-${JMETER_VERSION}
ENV JMETER_PATH=${JMETER_HOME}/bin:${PATH}
ENV PATH=${JMETER_HOME}/bin:${PATH}

RUN mkdir /jmeter
COPY apache-jmeter-${JMETER_VERSION}.tgz /jmeter
RUN cd /jmeter && tar xvf apache-jmeter-${JMETER_VERSION}.tgz #其中tgz文件请去官网下载
RUN sed -i 's/#jmeter.save.saveservice.output_format=csv/jmeter.save.saveservice.output_format=xml/g'  /jmeter/apache-jmeter-5.4.1/bin/jmeter.properties

docker build -t chesterjenkinsagent .
docker tag chesterjenkinsagent:latest 192.168.43.95/jenkins/chesterjenkinsagent:v1
docker login --username=admin --password=123456  192.168.43.95
docker push 192.168.43.95/jenkins/chesterjenkinsagent:v1

运行Agent，其中的密钥通过jenkins的agent信息获取

# agent4
docker run  -v /var/run/docker.sock:/var/run/docker.sock --name agent4  -d --init 192.168.43.95/jenkins/chesterjenkinsagent:v1 -url http://192.168.43.94:8080   1e84c896dbffc0c325587eedb6301ab0ae66d3f4b49c4628dbb05714e382d7a2 agent4

新增K8S凭据

• 将k8s集群的配置文件导出 ~/.kube/config
• Mange Jenkins -> Manage Credentials -> Add Credentials -> Secret File
• 选择导出的kubeconfig，设置id为kubeconfig

新增Harbor凭据

• Mange Jenkins -> Manage Credentials -> Add Credentials -> Username with password
• 输入Harbor的用户名密码

新增Gitee凭据

• Mange Jenkins -> Manage Credentials -> Add Credentials -> Username with password
• 输入Gitee的用户名密码

安装插件

Manage Jenkins -> Manage Plugins -> Search "Performance" -> install

管理共享库

Manage Jenkins -> Configure System -> Global Pipeline Libraries，其中的git地址是共享库的地址

共享库中新增以下代码

vars/run.groovy

#!/usr/bin/env groovy

def call(String nameSpaceName, String serviceName, String servicePath, String servicePort, String nodePort, Map envInfo) {
    def devBranch = envInfo['dev']
    def prodBranch = envInfo['prod']

    pipeline {
        agent {
            label 'agentnode'
        }

        environment {
            DEV_MY_KUBECONFIG = credentials('kubeconfig')
            PROD_MY_KUBECONFIG = credentials('kubeconfig')
            HARBOR = credentials('harbor')
        }

        stages {
            stage('Dev - GitPull') {
                steps {
                    deleteDir()
                    gitCheckOut devBranch, env.GIT_URL
                }
                post {
                    success {
                        script {
                            echo 'pull done'
                        }
                    }
                }
            }
            stage('Dev - DockerBuild') {
                steps {
                    dockerImageBuild serviceName, "${servicePath}Dockerfile"
                }
            }
            stage('Dev - DockerTag') {
                steps {
                    dockerTag serviceName, 'dev'
                }
            }
            stage('Dev - DockerLogin') {
                steps {
                    dockerLogin 'dev'
                }
            }
            stage('Dev - DockerPush') {
                steps {
                    dockerPush serviceName, 'dev'
                }
            }
            stage('Dev - GenerateHarborSecretYAML') {
                steps {
                    harborSecret nameSpaceName, serviceName, 'dev'
                }
            }
            stage('Dev - GenerateK8SYAML') {
                steps {
                    k8sGenerateYaml nameSpaceName, serviceName, servicePath, 'dev', servicePort, nodePort
                }
            }
            stage('Dev - DeployToK8S') {
                steps {
                    k8sDeploy servicePath, 'dev'
                }
            }
            stage('Dev - CheckDeployStatus') {
                steps {
                    k8sCheckDeployStatus nameSpaceName, serviceName, 'dev'
                }
            }
            stage('Dev - Jmeter Test') {
                steps {
                    jmeterTest servicePath
                }
            }

            stage('DeployToProd?') {
                steps {
                    input '部署生产？'
                }
            }

            stage('Prod - GitPull') {
                steps {
                    gitCheckOut prodBranch, env.GIT_URL
                }
            }
            stage('Prod - DockerBuild') {
                steps {
                    dockerImageBuild serviceName, "${servicePath}Dockerfile"
                }
            }
            stage('Prod - DockerTag') {
                steps {
                    dockerTag serviceName, 'prod'
                }
            }
            stage('Prod - DockerLogin') {
                steps {
                    dockerLogin 'prod'
                }
            }
            stage('Prod - DockerPush') {
                steps {
                    dockerPush serviceName, 'prod'
                }
            }
            stage('Prod - GenerateHarborSecretYAML') {
                steps {
                    harborSecret nameSpaceName, serviceName, 'prod'
                }
            }
            stage('Prod - GenerateK8SYAML') {
                steps {
                    k8sGenerateYaml nameSpaceName, serviceName, servicePath, 'prod', servicePort, nodePort
                }
            }
            stage('Prod - DeployToK8S') {
                steps {
                    k8sDeploy servicePath, 'prod'
                }
            }
            stage('Prod - CheckDeployStatus') {
                steps {
                    k8sCheckDeployStatus nameSpaceName, serviceName, 'prod'
                }
            }
        }
    }
}

vars/dockerImageBuild.groovy

#!/usr/bin/env groovy

def call(String serviceName, String dockerfilePath) {
    echo "serviceName:${serviceName} dockerfilePath:${dockerfilePath}"
    sh "docker build -t ${serviceName} -f  ${dockerfilePath} ."
}

vars/dockerLogin.groovy

#!/usr/bin/env groovy

def call(String envName) {
    sh 'docker login --username=$HARBOR_USR --password=$HARBOR_PSW  192.168.43.95'
}

vars/dockerPush.groovy

#!/usr/bin/env groovy

def call(String serviceName,String envName) {
    sh "docker push 192.168.43.95/dapr/${serviceName}:${envName}-${BUILD_NUMBER}"
}

vars/dockerTag.groovy

#!/usr/bin/env groovy

def call(String serviceName, String envName) {
    sh "docker tag ${serviceName}:latest 192.168.43.95/dapr/${serviceName}:${envName}-${BUILD_NUMBER}"
}

vars/gitCheckOut.groovy

#!/usr/bin/env groovy

def call(String branchName, String gitUrl) {
    echo "branchName:${branchName} gitUrl:${gitUrl}"
    checkout([$class: 'GitSCM', branches: [[name: branchName]], extensions: [], userRemoteConfigs: [[credentialsId: 'gitee', url: gitUrl]]])
}

vars/harborSecret.groovy

def call(String namespaceName, String serviceName, String envName) {
    dir('harborsecret') {
        checkout([$class: 'GitSCM', branches: [[name: '*/master']], extensions: [], userRemoteConfigs: [[credentialsId: 'gitee', url: 'https://gitee.com/chesterdotchen/jenkins-demo-secrets.git']]])
        sh """sed -i 's/{{ServiceName}}/${serviceName}/g'  secrets.yaml"""
        sh """sed -i 's/{{NameSpaceName}}/${namespaceName}/g'  secrets.yaml"""

        if (envName == 'dev') {
            sh("kubectl --kubeconfig  ${DEV_MY_KUBECONFIG} apply -f secrets.yaml")
        }
        if (envName == 'prod') {
            sh("kubectl --kubeconfig  ${PROD_MY_KUBECONFIG} apply -f secrets.yaml")
        }
    }
}

vars/jmeterTest.groovy

#!/usr/bin/env groovy

def call(String servicePath) {
    sh "jmeter -j jmeter.save.saveservice.output_format=xml -n -t ${servicePath}jmeter.jmx -l ${servicePath}jmeter.report.jtl"
    sh "cp ${servicePath}jmeter.report.jtl ${servicePath}jmeter.report.${BUILD_NUMBER}.jtl"
    perfReport errorFailedThreshold:5, sourceDataFiles:"${servicePath}jmeter.report.jtl"
    sh "cat ${servicePath}jmeter.report.${BUILD_NUMBER}.jtl"

    sh """#!/bin/sh
                            grep '<failure>true</failure>' ${servicePath}jmeter.report.${BUILD_NUMBER}.jtl
                            if [ \$? = 0 ]
                            then
                                exit 1
                            else
                                exit 0
                            fi
                            """
}

vars/k8sCheckDeployStatus.groovy

#!/usr/bin/env groovy

def call(String nameSpaceName, String serviceName, String envName) {
    if (envName == 'dev') {
        sh("""
                    ATTEMPTS=0
                    ROLLOUT_STATUS_CMD='kubectl --kubeconfig  ${DEV_MY_KUBECONFIG} rollout status deployment/${serviceName}  -n ${nameSpaceName}-ns'
                    until \$ROLLOUT_STATUS_CMD || [ \$ATTEMPTS -eq 60 ]; do
                        \$ROLLOUT_STATUS_CMD
                        ATTEMPTS=\$((attempts + 1))
                        sleep 10
                    done
                 """)
    }
    if (envName == 'prod') {
        sh("""
                    ATTEMPTS=0
                    ROLLOUT_STATUS_CMD='kubectl --kubeconfig  ${PROD_MY_KUBECONFIG} rollout status deployment/${serviceName}  -n ${nameSpaceName}-ns'
                    until \$ROLLOUT_STATUS_CMD || [ \$ATTEMPTS -eq 60 ]; do
                        \$ROLLOUT_STATUS_CMD
                        ATTEMPTS=\$((attempts + 1))
                        sleep 10
                    done
                 """)
    }
}

vars/k8sDeploy.groovy

#!/usr/bin/env groovy

def call(String servicePath, String envName) {
    if (envName == 'dev') {
        sh("kubectl --kubeconfig  ${DEV_MY_KUBECONFIG} apply -f ${servicePath}deployment.yaml")
    }
    if (envName == 'prod') {
        sh("kubectl --kubeconfig  ${PROD_MY_KUBECONFIG} apply -f ${servicePath}deployment.yaml")
    }
}

vars/k8sGenerateYaml.groovy

#!/usr/bin/env groovy

def call(String namespaceName, String serviceName, String servicePath, String envName, String servicePort, String nodePort) {
    sh """sed "s/{{tagversion}}/${envName}-${BUILD_NUMBER}/g"  ${servicePath}deployment.yaml.tpl > ${servicePath}deployment.yaml """
    sh """sed -i 's/{{ServiceName}}/${serviceName}/g'  ${servicePath}deployment.yaml"""
    sh """sed -i 's/{{ServicePort}}/${servicePort}/g'  ${servicePath}deployment.yaml"""
    sh """sed -i 's/{{NodePort}}/${nodePort}/g'  ${servicePath}deployment.yaml"""
    sh """sed -i 's/{{NameSpaceName}}/${namespaceName}/g'  ${servicePath}deployment.yaml"""
}

jenkins-demo-secrets中代码如下

apiVersion: v1
kind: Namespace
metadata:
  name: {{NameSpaceName}}-ns

---
apiVersion: v1
kind: Secret
metadata:
 name: harbor-key
 namespace: {{NameSpaceName}}-ns
type: kubernetes.io/dockerconfigjson
data:
 .dockerconfigjson: ewoJImF1dGhzIjogewoJCSIxOTIuMTY4LjQzLjk1IjogewoJCQkiYXV0aCI6ICJZV1J0YVc0Nk1USXpORFUyIgoJCX0sCgkJInJlZ2lzdHJ5LmNuLWJlaWppbmcuYWxpeXVuY3MuY29tIjogewoJCQkiYXV0aCI6ICI2Wm1JNUxpQTU0dXVPbU5vWlc1NWFYTm9hVEV5TXc9PSIKCQl9Cgl9Cn0=

dockerconfigjson可通过以下方式获取

docker login --username=admin --password=123456 192.168.43.95
cat ~/.docker/config.json | base64

Jenkinsfile中引用共享库

项目库中需要提前编写好Dockerfile，Jenkinsfile，deployment.yaml.tpl，jmeter.jmx

Dockerfile

#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.

FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS base
WORKDIR /app
EXPOSE 5001

FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
COPY ["FrontEnd/FrontEnd.csproj", "FrontEnd/"]
COPY ["Common/Common.csproj", "Common/"]
RUN dotnet restore "FrontEnd/FrontEnd.csproj"
COPY . .
WORKDIR "/src/FrontEnd"
RUN dotnet build "FrontEnd.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "FrontEnd.csproj" -c Release -o /app/publish

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "FrontEnd.dll"]

Jenkinsfile

#!/usr/bin/env groovy

@Library('share@master') _

run 'daprtest', 'frontend', './FrontEnd/', '5001', '31111', ['dev':'*/master', 'prod':'*/master']

deployment.yaml.tpl

apiVersion: v1
kind: Namespace
metadata:
  name: {{NameSpaceName}}-ns

---
apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: statestore
  namespace: {{NameSpaceName}}-ns
spec:
  type: state.redis
  version: v1
  metadata:
  - name: redisHost
    value: 192.168.43.102:6379
  - name: redisPassword
    value: "123456"
  - name: actorStateStore
    value: "true"

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ServiceName}}
  namespace: {{NameSpaceName}}-ns
  labels:
    app: {{ServiceName}}
spec:
  replicas: 1
  selector:
    matchLabels:
      app: {{ServiceName}}
  template:
    metadata:
      namespace: {{NameSpaceName}}-ns
      labels:
        app: {{ServiceName}}
      annotations:
        dapr.io/enabled: "true"
        dapr.io/app-id: "{{ServiceName}}"
        dapr.io/app-port: "{{ServicePort}}"
    spec:
      imagePullSecrets:
      - name: harbor-key
      containers:
      - name: {{ServiceName}}
        image: 192.168.43.95/dapr/{{ServiceName}}:{{tagversion}}
        ports:
        - containerPort: {{ServicePort}}
        imagePullPolicy: Always

---
apiVersion: v1
kind: Service
metadata:
  namespace: {{NameSpaceName}}-ns
  name: {{ServiceName}}-svc
spec:
  type: NodePort
  selector:
    app: {{ServiceName}}
  ports:
    - port: {{ServicePort}}
      targetPort: {{ServicePort}}
      nodePort: {{NodePort}}

jmter.jmx则根据需要自行编写

新建pipline

其中的URL指向自己项目的git地址

构建pipline

至此，我们已经完成了Jenkinsfile中一行代码部署我们的项目，如果有新的service，在编写好Dockerfile，deployment.yaml.tpl（保持一致），jmeter.jmx的前提下，我们只需要Jenkinsfile中通过共享库引用run方法即可