CICD jenkins 初

CICD基本包含：gitlab、maven、jenkins、script

k8s的cicd

环境准备

git
java
maven
jenkins ：官网:https://www.jenkins.io/zh/doc/pipeline/tour/getting-started/

安装

上传jenkins

[root@cicd opt]# mkdir /opt/jenkins
[root@cicd jenkins]# ll
total 69256
-rw-r--r-- 1 root root 70918017 May 11 22:33 jenkins.war

启动jenkins

[root@cicd jenkins]# nohup java -jar jenkins.war --httpPort=8080 2>&1 &
[root@cicd jenkins]# tail -100f nohup.out 
Running from: /opt/jenkins/jenkins.war
webroot: $user.home/.jenkins
Running from: /opt/jenkins/jenkins.war
webroot: $user.home/.jenkins
2021-05-11 14:35:51.973+0000 [id=1]	INFO	org.eclipse.jetty.util.log.Log#initialized: Logging initialized @281ms to org.eclipse.jetty.util.log.JavaUtilLog
2021-05-11 14:35:52.087+0000 [id=1]	INFO	winstone.Logger#logInternal: Beginning extraction from war file
2021-05-11 14:35:52.113+0000 [id=1]	WARNING	o.e.j.s.handler.ContextHandler#setContextPath: Empty contextPath
2021-05-11 14:35:52.162+0000 [id=1]	INFO	org.eclipse.jetty.server.Server#doStart: jetty-9.4.39.v20210325; built: 2021-03-25T14:42:11.471Z; git: 9fc7ca5a922f2a37b84ec9dbc26a5168cee7e667; jvm 1.8.0_231-b11
2021-05-11 14:35:52.384+0000 [id=1]	INFO	o.e.j.w.StandardDescriptorProcessor#visitServlet: NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspServlet
2021-05-11 14:35:52.421+0000 [id=1]	INFO	o.e.j.s.s.DefaultSessionIdManager#doStart: DefaultSessionIdManager workerName=node0
2021-05-11 14:35:52.422+0000 [id=1]	INFO	o.e.j.s.s.DefaultSessionIdManager#doStart: No SessionScavenger set, using defaults
2021-05-11 14:35:52.423+0000 [id=1]	INFO	o.e.j.server.session.HouseKeeper#startScavenging: node0 Scavenging every 660000ms
2021-05-11 14:35:52.761+0000 [id=1]	INFO	hudson.WebAppMain#contextInitialized: Jenkins home directory: /root/.jenkins found at: $user.home/.jenkins
2021-05-11 14:35:52.848+0000 [id=1]	INFO	o.e.j.s.handler.ContextHandler#doStart: Started w.@329dbdbf{Jenkins v2.277.4,/,file:///root/.jenkins/war/,AVAILABLE}{/root/.jenkins/war}
2021-05-11 14:35:52.862+0000 [id=1]	INFO	o.e.j.server.AbstractConnector#doStart: Started ServerConnector@90f6bfd{HTTP/1.1, (http/1.1)}{0.0.0.0:8080}
2021-05-11 14:35:52.862+0000 [id=1]	INFO	org.eclipse.jetty.server.Server#doStart: Started @1170ms
2021-05-11 14:35:52.863+0000 [id=22]	INFO	winstone.Logger#logInternal: Winstone Servlet Engine running: controlPort=disabled
2021-05-11 14:35:53.952+0000 [id=29]	INFO	jenkins.InitReactorRunner$1#onAttained: Started initialization
2021-05-11 14:35:53.996+0000 [id=27]	INFO	jenkins.InitReactorRunner$1#onAttained: Listed all plugins
2021-05-11 14:35:55.012+0000 [id=33]	INFO	jenkins.InitReactorRunner$1#onAttained: Prepared all plugins
2021-05-11 14:35:55.016+0000 [id=33]	INFO	jenkins.InitReactorRunner$1#onAttained: Started all plugins
2021-05-11 14:35:55.020+0000 [id=28]	INFO	jenkins.InitReactorRunner$1#onAttained: Augmented all extensions
2021-05-11 14:35:55.372+0000 [id=31]	INFO	jenkins.InitReactorRunner$1#onAttained: System config loaded
2021-05-11 14:35:55.372+0000 [id=31]	INFO	jenkins.InitReactorRunner$1#onAttained: System config adapted
2021-05-11 14:35:55.372+0000 [id=31]	INFO	jenkins.InitReactorRunner$1#onAttained: Loaded all jobs
2021-05-11 14:35:55.373+0000 [id=31]	INFO	jenkins.InitReactorRunner$1#onAttained: Configuration for all jobs updated
2021-05-11 14:35:55.399+0000 [id=47]	INFO	hudson.model.AsyncPeriodicWork#lambda$doRun$0: Started Download metadata
2021-05-11 14:35:55.406+0000 [id=47]	INFO	hudson.util.Retrier#start: Attempt #1 to do the action check updates server
2021-05-11 14:35:55.473+0000 [id=34]	INFO	jenkins.install.SetupWizard#init: 

*************************************************************
*************************************************************
*************************************************************

Jenkins initial setup is required. An admin user has been created and a password generated.
Please use the following password to proceed to installation:

#这个就是初始化的密码
6da14ff8334144f1882e15fd3e2f5351

This may also be found at: /root/.jenkins/secrets/initialAdminPassword

*************************************************************
*************************************************************
*************************************************************

打开浏览器，输入http://192.168.10.170:8080/地址，输入上面的密码
点击安装插件
等待正在安装中。。。
可以创建一个新用户
继续点击保存完成
安装完成

使用

jenkins主要流程都是任务所有的cicd都是通过job完成的

创建job

脚本写完后，点击保存立即构建在下面就会看到构建的日志点击配置会返回流水线继续修改脚本

pipeline构建脚本

node {
    env.BUILD_DIR = "/root/build-workspace"  //定义 一个工作目录 
    env.MODULE = "client"   //定义一个模块名字 
    env.HOST="K8S.host.com"  //镜像仓库 
    stage('Preparation') { // 1. git拉取代码 
        git 'http://makj:mkj13418854559@gitlab.yzltech.com:34678/makj/dataserver.git'
    }
    stage('Maven Build') {  //2.maven 构建
        sh "mvn clean package -pl ${MODULE} -am"
    }
    stage('Build Image') {  //3.构建 docker image docker build的脚本路径 
        sh "/root/script/dockerbuild.sh" 
    }
    stage('deploy') {  //4.发布到k8s  
        sh "/root/script/k8sdeploy.sh" 
    }
}

dockerbuild.sh脚本

#!/bin/bash

#BUILD_ DIR 就是脚本里定义的env.BUILD_DIR
if ["${BUILD_DIR}" == ""] ; then
	echo "env 'BUILD_ DIR' is not set "
	exit 1
fi

#JOB_NAME 就是创建pipline的流水线的名字
DOCKER_DIR = ${BUILD_DIR}/${JOB_NAME}

#判断docker工作目录是否存在
if[! -d ${DOCKER_DIR}];then
	mkdir -p $ {DOCKER_ DIR} 
fi

echo "docker workspace: ${DOCKER_ DIR}"

#${WORKSPACE}就是当前jenkins的工作空间 ${MODULE}就是env.MODULE

JENKINS_DIR = ${WORKSPACE}/${MODULE}
echo "jenkins workspace: ${JENKINS_DIR} "

if [ ! -f ${JENKINS_DIR}/target/*.war ] ; then
	echo "target war file not found"
	exit 1
fi

#将构建打包好的文件解压
cd ${DOCKER_DIR}
rm -fr *
unzip -0q ${JENKINS_DIR}/target/*.war -d ./ROOT

mv ${JENKINS_DIR} /Dockerfile
if [ -d ${JENKINS_DIR}/dockerfiles ] ; then 
	mv ${JENKINS_DIR}/dockerfiles .
fi

#至此 docker文件就准备好了 下面写Dockerfile
VERSION=$(date +%Y%m%d%H%M%S) #版本号
IMAGE_NAME = hub.mooc.com/kubernetes/${JOB_NAME}:${VERSION}  #镜像名字
echo "building image: ${IMAGE_ NAME}"
#将镜像名字写到一个文件里
echo "${IMAGE_NAME}" > ${WORKSPACE}/IMAGE
docker build -t $ {IMAGE_NAME }  #打包
docker push $ {IMAGE_NAME}  #push到仓库

k8sdeploy.sh脚本

#!/bin/bash

name=${JOB_NAME}  #任务名字
image=$(cat ${WORKSPACE}/IMAGE)  #镜像名字 从文件中读
host=${HOST}  #镜像host
echo "deploying name: ${name}, image: ${imaage},host: ${host}"

rm -f web.yaml

#拷贝一个目标yaml 也可以自己写一个
cp $(dirname "${BASH_ SOURCE [0]}")/template/web.yaml .

#替换模板
sed -i "s, { {name}} ,${name} ,g" web.yaml
sed -i "s, {{name}}，${name} ,g" web.yaml

#k8s里生效
kucectl apply -y web.yaml

cat web.yaml


#健康检查 2秒一次 最多60次
#健康检查
success=0 #状态
count=60  #检查总数
IFS=","
sleep 5  #等待5秒后开始健康检查
while[ ${count} -gt 0 0]
do
	#执行一个kubectl命令 拿到容器的status下面的所有状态值 如果都等于1 则代表容器启动成功
	replicas=$(kubectl get deploy ${name} -o go-template='{{.status.replicas}},{{.status.updatedReplicas}}, {{.status.readyReplicas}} ,{{.status.availableReplicas}}')
	echo "replicas: ${replicas}"
	arr=(${replicas})
	if [ "${arr[0]}" == "${arr[1]}" -a "${arr[1]}" == "${arr[2]}" -a "${arr[2]}" == "${arr[3]]}" ] ; then
		echo "health check success !"
		success=1
		break 
	fi
	#可以在取到deployment.kubernetes.io/revision这个 值 这个值在deployment每启动一次的时候 就会加1 对比前后是否发生了变化得到是否更新成功
	((count--))
	sleep 2
done
if [ ${success} -ne 1 ]; then
	echo "healte check failed"
	exit 1
fi

posted @ 2022-06-07 15:37 makj 阅读(81) 评论(0) 收藏举报

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makj

CICD jenkins 初

环境准备

安装

使用

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