CodeReview实践-Gerrit自动触发JenkinsCI-技术圈

Gerrit + Jenkins

背景

当前团队使用Gerrit来做代码管理、CodeReview。计划实现当review提交到了Gerrit并且review通过（merged）自动触发Jenkins流水线。以前接触Gitlab比较多，Gerrit还是第一次开始用，踩了点坑记录下来。本文主要讲述Gerrit Trigger流水线配置，关于服务器配置等细节问题暂不研究，降低复杂性。

Gerrit 配置

我们可以通过Docker的方式快速启动一个Gerrit实例，默认Gerrit使用的是HTTP 8080端口、SSH29418端口。通过CANONICAL_WEB_URL参数指定服务器网页地址。

docker run --name gerrit -itd \-p 8088:8080 \-p 29418:29418 \-e CANONICAL_WEB_URL=http://192.168.1.200:8088 gerritcodereview/gerrit

启动成功后，默认打开的是一个插件安装的页面，此时可以根据个人需要安装相关插件，也可以跳过。

默认登录就是admin, 创建一个Jenkins用户。

登录Jenkins用户然后配置SSH-KEY，创建ssh-key添加到jenkins用户配置中。

[root@zeyang-nuc-service ~]# kubectl exec -it jenkins-6ccf555769-sfdw6 -n devops bashbash-4.2$ iduid=1000(jenkins) gid=1000(jenkins) groups=1000(jenkins)bash-4.2$ ssh-keygenGenerating public/private rsa key pair.Enter file in which to save the key (/var/jenkins_home/.ssh/id_rsa):Created directory '/var/jenkins_home/.ssh'.Enter passphrase (empty for no passphrase):Enter same passphrase again:Your identification has been saved in /var/jenkins_home/.ssh/id_rsa.Your public key has been saved in /var/jenkins_home/.ssh/id_rsa.pub.The key fingerprint is:SHA256:nGqkSVAUuc2xrGe8Bz/xuWcQ/YVrDISPJux+tCZkJgI jenkins@jenkins-6ccf555769-sfdw6The key's randomart image is:+---[RSA 2048]----+|   .+o     .     ||   .. .   . .    ||  .  = +   =   . ||  E.. =.o.+ + . .||   ..o..So . + o ||   .o+*.* o   =  ||    o+oX + + .   ||     .. * * o    ||       . =.+     |+----[SHA256]-----+

默认的key在JENKINS_HOME目录中/var/jenkins_home/.ssh/id_rsa。

bash-4.2$ cat /var/jenkins_home/.ssh/id_rsa.pubssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCb+BcXnBXG4f4T3MSDsL/aNLm4zlMkX5xn5pwC4eaep+XMe9kXMsYJZ3xuQ1dxUTAeTHAYX33IsclpE63H0nXdNj8cgcC9dnyXFYGieKfSx44JeP3O4rcMFN+cPGlEcIVJdTF8RfpvDANObCUJ0fnsw7f/yVImdwqGbXaBsU11+s6uRuCghXUw1JhA4H+mVp89YZN7ilhif4I8rol/cUkcKnQhxM0ziClWL5VLBTfpO5QNhj+vy2JICMSgU93EEs0LgBUdT2Q+1tduQo3R7fNOkQm46y1oonoUMzXTr9/kOlcAxZR9kIT7WYPxGQGCoyf2AiMP3VKwowv98MenDCFZ jenkins@jenkins-6ccf555769-sfdw6

这里使用的是id_rsa.pub，复制文件内容，然后添加到Gerrit Jenkins用户中。（记得点击ADD）

将Jenkins用户加入Non-interactive Users组。BROWSE>Groups>Non-Interactive Users>Members。

创建一个仓库，然后简单的设置下repo权限：

refs/* ：read Non-interactive Usersrefs/heads/* : Label Code-Review Non-interactive Users

Gerrit 2.7+ 创建一个组Event Streaming Users，将Jenkins用户加入。

设置All-projects access 权限， BROWSE> repos>All-Projects>Access>Global Capabilities >Stream Events 。

allow Event Streaming Users

到此，Gerrit配置基本上已经完成了，页面样式很简洁。

Jenkins配置

首先我们安装Gerrit Hook插件，然后进入系统管理会看到gerrit的图标。

Connection error : com.jcraft.jsch.JSchException: Auth fail 错误一般是ssh-key问题。

在流水线项目中添加Gerrit Trigger.

Ok，Jenkins的配置完成了。接下来开始测试自动触发。

创建codereview

[root@zeyang-nuc-service devops]# lsaa,txt  aasss,txt  sss  test.txt[root@zeyang-nuc-service devops]# echo 123 >test.txt[root@zeyang-nuc-service devops]# git add .[root@zeyang-nuc-service devops]# git commit -m "init"[master 77f6474] init 1 file changed, 1 insertion(+), 1 deletion(-)[root@zeyang-nuc-service devops]# git push origin HEAD:refs/for/masterUsername for 'http://192.168.1.200:8088': adminPassword for 'http://admin@192.168.1.200:8088':Enumerating objects: 3, done.Counting objects: 100% (3/3), done.Delta compression using up to 8 threads.Compressing objects: 100% (2/2), done.Writing objects: 100% (2/2), 253 bytes | 253.00 KiB/s, done.Total 2 (delta 1), reused 0 (delta 0)remote: Resolving deltas: 100% (1/1)remote: Processing changes: refs: 1, new: 1, doneremote:remote: SUCCESSremote:remote:   http://192.168.1.200:8088/c/devops/+/21 init [NEW]remote:To http://192.168.1.200:8088/devops * [new branch]      HEAD -> refs/for/master

merge 测试

Gerrit传递的参数还是挺多的，可以很方便的获取。基本上这些参数就够用了。

Pipeline As Code

//Pipeline paramsString BRANCH_NAME = "${env.GERRIT_BRANCH}"String PROJECT_NAME = "devops"String PROJECT_URL = "http://192.168.1.200:8088/devops"currentBuild.description = "Trigger By ${BRANCH_NAME}"
//Pipelinepipeline{    agent {        node {  label "build"   //指定运行节点的标签或者名称        }    }
    options{        skipDefaultCheckout()    }
    triggers {        //配置gerrit触发器        gerrit  customUrl: '',                gerritProjects: [[branches: [[compareType: 'ANT', pattern: '**']],                compareType: 'PLAIN',                disableStrictForbiddenFileVerification: false,                pattern: "${PROJECT_NAME}"]],                serverName: 'devops',                triggerOnEvents: [changeMerged()]    }
    stages{
        stage("GetCode"){            steps{                echo "========executing GetCode========"                //下载代码                checkout([$class: 'GitSCM', branches: [[name: "${BRANCH_NAME}"]],                                      doGenerateSubmoduleConfigurations: false,                                      extensions: [],                                      submoduleCfg: [],                                      userRemoteConfigs: [[url: "${PROJECT_URL}"]]])            }        }    }    post{        always{            echo "========always========"            cleanWs()        }        success{            echo "========pipeline executed successfully ========"        }        failure{            echo "========pipeline execution failed========"        }    }}

到此基本上触发就已经完成了，后续添加构建和发布步骤。Gerrit进行CodeReview还是很方便的，现在每次提交的代码、Jenkinsfile都需要先进行CodeReview才能进行merge。哈哈，注意文件中的空格.....