k8s+jenkins实现自动化部署应用至k8s集群方式

[root@centos7 ~]# ll /app/

[root@centos7 ~]# cat /etc/profile | tail -n3 #jdk的环境变量
export JAVA_HOME=/app/jdk
export PATH=JAVA_HOME/bin:JAVA_HOME/jre/bin:PATH
export CLASSPATH=JAVA_HOME/lib:JAVA_HOME/jre/lib:JAVA_HOME/lib/tools.jar

[root@centos7 war]# ll

[root@centos7 war]# cat start.sh

[root@centos7 war]# ./start.sh && tailf test.log

[root@centos7 ~]# cat .jenkins/hudson.model.UpdateCenter.xml

[root@centos7 ~]# cat /etc/hosts

[root@centos7 ~]# cat /data/script/k8s_auto_depoy.sh
#!/bin/bash
URL=git@k8s.gitlab.cn:middle-supoort-project/middle-compose-service.git
Starttime=`date +"%Y-%m-%d_%H-%M-%S"`
Method=$1
Branch=$2
t1=`date +"%Y-%m-%d %H:%M:%S"`

     #代码克隆至jenkins后端
clone_code(){
    cd /root/.jenkins/workspace/jenkins_project && git clone -b $Branch ${URL}&& echo "Clone Finished"
}

 #代码打包压缩并远程推送至k8s-master-1的nginx镜像制作目录
Pack_scp(){
    cd /root/.jenkins/workspace/jenkins_project/middle-compose-service/ && tar cvzf nginx.tar.gz * && echo Package Finished
    scp nginx.tar.gz root@k8s-master-1:/data/Dockerfile/nginx/ && ssh root@k8s-master-1 'cd /data/Dockerfile/nginx/ && tar xvf nginx.tar.gz &&rm -f nginx.tar.gz' 
}

 #远程操作k8s-master-1节点，进行镜像制作并推送至harbor镜像仓库
build_iamge(){
    ssh root@k8s-master-1 "cd /data/Dockerfile/nginx/ && ./build.sh ${Starttime} && echo 'build_image and push_harbor success!'"
}

    #对k8s集群中的nginx的pod应用进行升级
app_update(){
    ssh root@k8s-master-1 "sed -ri 's@image: .*@image: k8s.harbor.cn/base_application/nginx:${Starttime}@g'  /data/mainfest/nginx.yaml"
    ssh root@k8s-master-1 "kubectl set image deployment/nginx-deployment nginx-container=k8s.harbor.cn/base_application/nginx:${Starttime} -n default --record=true"
                t2=`date +"%Y-%m-%d %H:%M:%S"`
    start_T=`date --date="${t1}" +%s`
    end_T=`date --date="${t2}" +%s`
    total_time=$((end_T-start_T))
    echo "deploy success,it has been spent ${total_time} seconds"   
}

    #k8s集群中的pod应用进行回滚
app_rollback(){
    ssh root@k8s-master-1 'kubectl rollout undo deployment/nginx-deployment  -n default'
}

    #进行k8s集群自动部署的主函数
main(){
    case $Method in 
    deploy)
        clone_code
        Pack_scp
        build_iamge
        app_update
    ;;
    rollback)
        app_rollback
    ;;
    esac
}

#执行主函数命令
main $1 $2

[root@centos7 ~]# cat .ssh/id_rsa.pub

[root@k8s-master-1 ~]# ll /data/Dockerfile/nginx
total 0

[root@k8s-master-1 ~]# ll /etc/docker/certs.d/k8s.harbor.cn/harbor_ca.crt

[root@k8s-master-1 data]# vim /data/mainfest/nginx.yaml

[root@k8s-master-1 ~]# kubectl apply -f /data/mainfest/nginx.yaml

[root@k8s-master-1 ~]# kubectl get pod -n default

[root@k8s-master-1 ~]# kubectl get service -n default

[root@k8s-master-1 ~]# kubectl get pod -n default

[root@k8s-master-1 ~]# kubectl describe pod nginx-deployment-b856886fb-9mzrm -n default

[root@k8s-master-1 ~]# cat /data/mainfest/nginx.yaml | grep “image:.*”