• kubernetes云平台管理实战:jenkins自动化构建docker镜像并部署到k8s集群(二十四)


    一、构建docker镜像并测试

    1、在node2上编辑dockerfile

    [root@node02 opt]# cd xiaoniao/
    [root@node02 xiaoniao]# ls
    2000.png 21.js icon.png img index.html sound1.mp3
    [root@node02 xiaoniao]# vim dockerfile
    [root@node02 xiaoniao]# vi .dockerignore
    [root@node02 xiaoniao]# cat dockerfile 
    FROM 192.168.118.188:5000/nginx:1.13
    ADD . /usr/share/nginx/html
    [root@node02 xiaoniao]# cat .dockerignore
    dockerfile
    

    2、jenkins web页面配置

    配置截图

    控制台输出代码

    Started by user luoahong
    Running as SYSTEM
    Building in workspace /root/.jenkins/workspace/xiaoniao
    using credential gitlab
     > git rev-parse --is-inside-work-tree # timeout=10
    Fetching changes from the remote Git repository
     > git config remote.origin.url git@192.168.118.20:root/xiaoniao.git # timeout=10
    Fetching upstream changes from git@192.168.118.20:root/xiaoniao.git
     > git --version # timeout=10
    using GIT_SSH to set credentials 
     > git fetch --tags --progress git@192.168.118.20:root/xiaoniao.git +refs/heads/*:refs/remotes/origin/* # timeout=10
     > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
     > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
    Checking out Revision a770b526b3931f687970283349f710469ad6a222 (refs/remotes/origin/master)
     > git config core.sparsecheckout # timeout=10
     > git checkout -f a770b526b3931f687970283349f710469ad6a222 # timeout=10
    Commit message: "install commit"
     > git rev-list --no-walk a770b526b3931f687970283349f710469ad6a222 # timeout=10
    [xiaoniao] $ /bin/sh -xe /app/apache-tomcat-8.0.27/temp/jenkins4656512328641218353.sh
    + docker build -t 192.168.118.188:5000/xiaoniao:v1 .
    Sending build context to Docker daemon 332.3 kB
    
    Step 1/2 : FROM 192.168.118.18:5000/nginx:1.13
     ---> ae513a47849c
    Step 2/2 : ADD . /usr/share/nginx/html
     ---> Using cache
     ---> 292d37a1ec49
    Successfully built 292d37a1ec49
    + docker push 192.168.118.188:5000/xiaoniao:v1
    The push refers to a repository [192.168.118.188:5000/xiaoniao]
    beaaf3962106: Preparing
    7ab428981537: Preparing
    82b81d779f83: Preparing
    d626a8ad97a1: Preparing
    beaaf3962106: Pushed
    7ab428981537: Pushed
    82b81d779f83: Pushed
    d626a8ad97a1: Pushed
    v1: digest: sha256:c25a7cf4e2180abfc4f814fc44c6ec55b35e9cee6d8e398c7885c42f176ea0ee size: 1158
    Finished: SUCCESS

    浏览器访问截图

    二、自动化构建docker镜像问题

    1、自动化构建docker镜像版本问题

    使用jenkins环境变量

    BUILD_ID 

    查看可用变量

    http://192.168.118.19:8080/env-vars.html/
    
    BUILD_ID
    The current build ID, identical to BUILD_NUMBER for builds created in 1.597+, but a YYYY-MM-DD_hh-mm-ss timestamp for older builds

    配置截图

    控制台输出

    Started by user luoahong
    Running as SYSTEM
    Building in workspace /root/.jenkins/workspace/xiaoniao
    using credential gitlab
     > git rev-parse --is-inside-work-tree # timeout=10
    Fetching changes from the remote Git repository
     > git config remote.origin.url git@192.168.118.20:root/xiaoniao.git # timeout=10
    Fetching upstream changes from git@192.168.118.20:root/xiaoniao.git
     > git --version # timeout=10
    using GIT_SSH to set credentials 
     > git fetch --tags --progress git@192.168.118.20:root/xiaoniao.git +refs/heads/*:refs/remotes/origin/* # timeout=10
     > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
     > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
    Checking out Revision a770b526b3931f687970283349f710469ad6a222 (refs/remotes/origin/master)
     > git config core.sparsecheckout # timeout=10
     > git checkout -f a770b526b3931f687970283349f710469ad6a222 # timeout=10
    Commit message: "install commit"
     > git rev-list --no-walk a770b526b3931f687970283349f710469ad6a222 # timeout=10
    [xiaoniao] $ /bin/sh -xe /app/apache-tomcat-8.0.27/temp/jenkins588157755746945636.sh
    + docker build -t 192.168.118.188:5000/xiaoniao:v9 .
    Sending build context to Docker daemon 332.3 kB
    
    Step 1/2 : FROM 192.168.118.18:5000/nginx:1.13
     ---> ae513a47849c
    Step 2/2 : ADD . /usr/share/nginx/html
     ---> Using cache
     ---> 292d37a1ec49
    Successfully built 292d37a1ec49
    + docker push 192.168.118.188:5000/xiaoniao:v9
    The push refers to a repository [192.168.118.188:5000/xiaoniao]
    beaaf3962106: Preparing
    7ab428981537: Preparing
    82b81d779f83: Preparing
    d626a8ad97a1: Preparing
    beaaf3962106: Layer already exists
    d626a8ad97a1: Layer already exists
    82b81d779f83: Layer already exists
    7ab428981537: Layer already exists
    v9: digest: sha256:c25a7cf4e2180abfc4f814fc44c6ec55b35e9cee6d8e398c7885c42f176ea0ee size: 1158
    Finished: SUCCESS
    

    重点看版本:+ docker push 192.168.118.188:5000/xiaoniao:v9

    构建版本查询

    [root@master _manifests]# ls /opt/myregistry/docker/registry/v2/repositories/xiaoniao/_manifests/tags/
    v1  v10  v9

    2、防止误操作立即构建

    配置截图

    #!/bin/bash
    if [ $GIT_PREVIOUS_SUCCESSFUL_COMMIT == $GIT_COMMIT ];then
         echo "no change,skip build"
         exit 0
    else
         docker build  -t 192.168.118.18:5000/xiaoniao:v$BUILD_ID  .
    	 docker push 192.168.118.18:5000/xiaoniao:v$BUILD_ID 
    fi

    测试代码

    Started by user luoahong
    Running as SYSTEM
    Building in workspace /root/.jenkins/workspace/xiaoniao
    using credential gitlab
     > git rev-parse --is-inside-work-tree # timeout=10
    Fetching changes from the remote Git repository
     > git config remote.origin.url git@192.168.118.20:root/xiaoniao.git # timeout=10
    Fetching upstream changes from git@192.168.118.20:root/xiaoniao.git
     > git --version # timeout=10
    using GIT_SSH to set credentials 
     > git fetch --tags --progress git@192.168.118.20:root/xiaoniao.git +refs/heads/*:refs/remotes/origin/* # timeout=10
     > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
     > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
    Checking out Revision a770b526b3931f687970283349f710469ad6a222 (refs/remotes/origin/master)
     > git config core.sparsecheckout # timeout=10
     > git checkout -f a770b526b3931f687970283349f710469ad6a222 # timeout=10
    Commit message: "install commit"
     > git rev-list --no-walk a770b526b3931f687970283349f710469ad6a222 # timeout=10
    [xiaoniao] $ /bin/bash /app/apache-tomcat-8.0.27/temp/jenkins4961049993779057712.sh
    no change,skip build
    Finished: SUCCESS

    三、k8s集群部署项目

    1、部署项目

    [root@master _manifests]# kubectl run xiaoniao --image=192.168.118.188:5000/xiaoniao:v1 --replicas=2 --record
    deployment "xiaoniao" created
    [root@master _manifests]# kubectl rollout history deployment xiaoniao
    deployments "xiaoniao"
    REVISION	CHANGE-CAUSE
    1	kubectl run xiaoniao --image=192.168.118.188:5000/xiaoniao:v1 --replicas=2 --record

    2、设置对外访问

    [root@master _manifests]# kubectl expose deployment xiaoniao --port=80 --type=NodePort
    service "xiaoniao" exposed
    [root@master _manifests]# kubectl get svc
    NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
    glusterfs 10.254.122.179 <none> 49152/TCP 2d
    kubernetes 10.254.0.1 <none> 443/TCP 9d
    mysql 10.254.168.177 <none> 3306/TCP 5d
    myweb 10.254.202.136 <nodes> 8080:30008/TCP 5d
    readiness 10.254.199.105 <none> 80/TCP 3d
    xiaoniao 10.254.22.194 <nodes> 80:32392/TCP 9s

    3、测试访问:

    [root@master _manifests]# curl 192.168.118.19:32392|grep '小鸟'
    % Total % Received % Xferd Average Speed Time Time Time Current
    Dload Upload Total Spent Left Speed
    100 3049 100 3049 0 0 707k 0 --:--:-- --:--:-- --:--:-- 992k
    <title>小鸟飞飞飞-文章库小游戏</title>
    "tTitle": "小鸟飞飞飞-文章库小游戏",
    document.title = "我玩小鸟飞飞飞过了"+t+"关!你能超过洒家我吗?";
    

    4、测试截图

     

     四、k8s 版本升级和回滚

    1、版本更新

    [root@master _manifests]# ls /opt/myregistry/docker/registry/v2/repositories/xiaoniao/_manifests/tags/
    v1 v10 v13 v9
    [root@master _manifests]# kubectl set image deploy xiaoniao xiaoniao=192.168.118.188:5000/xiaoniao:v13
    deployment "xiaoniao" image updated
    [root@master _manifests]# curl 192.168.118.19:32392|grep '活的' % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 3036 100 3036 0 0 658k 0 --:--:-- --:--:-- --:--:-- 741k <title>活的潇洒的游戏</title> [root@master _manifests]# kubectl set image deploy xiaoniao xiaoniao=192.168.118.188:5000/xiaoniao:v10 deployment "xiaoniao" image updated
    [root@master _manifests]# curl 192.168.118.19:32392|grep '小鸟' % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 3049 100 3049 0 0 706k 0 --:--:-- --:--:-- --:--:-- 992k <title>小鸟飞飞飞-文章库小游戏</title> "tTitle": "小鸟飞飞飞-文章库小游戏", document.title = "我玩小鸟飞飞飞过了"+t+"关!你能超过洒家我吗?";

    2、回滚指定版本

    [root@master _manifests]# kubectl rollout undo deployment xiaoniao --to-revision=1
    deployment "xiaoniao" rolled back
    [root@master _manifests]# curl 192.168.118.19:32392|grep '小鸟' % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 3049 100 3049 0 0 744k 0 --:--:-- --:--:-- --:--:-- 992k <title>小鸟飞飞飞-文章库小游戏</title> "tTitle": "小鸟飞飞飞-文章库小游戏", document.title = "我玩小鸟飞飞飞过了"+t+"关!你能超过洒家我吗?";
    [root@master _manifests]# kubectl rollout undo deployment xiaoniao deployment "xiaoniao" rolled back
    [root@master _manifests]# curl 192.168.118.19:32392|grep '小鸟' % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 3049 100 3049 0 0 849k 0 --:--:-- --:--:-- --:--:-- 992k <title>小鸟飞飞飞-文章库小游戏</title> "tTitle": "小鸟飞飞飞-文章库小游戏", document.title = "我玩小鸟飞飞飞过了"+t+"关!你能超过洒家我吗?";

    3、回滚到上一个版本

    [root@master _manifests]# kubectl rollout history deployment xiaoniao
    deployments "xiaoniao"
    REVISION	CHANGE-CAUSE
    1	kubectl run xiaoniao --image=192.168.118.188:5000/xiaoniao:v1 --replicas=2 --record
    2	kubectl set image deploy xiaoniao xiaoniao=192.168.118.188:5000/xiaoniao:v13
    3	kubectl set image deploy xiaoniao xiaoniao=192.168.118.188:5000/xiaoniao:v10
    
    [root@master _manifests]# kubectl rollout
    
    history View rollout history
    pause Mark the provided resource as paused
    resume Resume a paused resource
    status Show the status of the rollout
    undo Undo a previous rollout
    
    [root@master _manifests]# kubectl rollout undo deployment xiaoniao --to-revision=1
    deployment "xiaoniao" rolled back
    

    五、jenkins实现一键k8s版本升级

    1、一键升级

    jenkins web页面配置

     控制台输出

    Started by user luoahong
    Running as SYSTEM
    Building in workspace /root/.jenkins/workspace/xiaoniao
    using credential gitlab
     > git rev-parse --is-inside-work-tree # timeout=10
    Fetching changes from the remote Git repository
     > git config remote.origin.url git@192.168.118.20:root/xiaoniao.git # timeout=10
    Fetching upstream changes from git@192.168.118.20:root/xiaoniao.git
     > git --version # timeout=10
    using GIT_SSH to set credentials 
     > git fetch --tags --progress git@192.168.118.20:root/xiaoniao.git +refs/heads/*:refs/remotes/origin/* # timeout=10
     > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
     > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
    Checking out Revision 4190fdf06bb26390c97b5d772e2c09ad1b5100d6 (refs/remotes/origin/master)
     > git config core.sparsecheckout # timeout=10
     > git checkout -f 4190fdf06bb26390c97b5d772e2c09ad1b5100d6 # timeout=10
    Commit message: "5rd commit"
     > git rev-list --no-walk af1a63adecbaf53517fb590bb718a2cc032a630c # timeout=10
    [xiaoniao] $ /bin/bash /app/apache-tomcat-8.0.27/temp/jenkins2728768869418033481.sh
    git pull commmit id not equals to current commit id trigger build
    Sending build context to Docker daemon 352.8 kB
    
    Step 1/2 : FROM 192.168.118.188:5000/nginx:1.13
     ---> ae513a47849c
    Step 2/2 : ADD . /usr/share/nginx/html
     ---> 67da545f2503
    Removing intermediate container cf183aeb58bb
    Successfully built 67da545f2503
    The push refers to a repository [192.168.118.188:5000/xiaoniao]
    8f72175a5946: Preparing
    7ab428981537: Preparing
    82b81d779f83: Preparing
    d626a8ad97a1: Preparing
    82b81d779f83: Layer already exists
    d626a8ad97a1: Layer already exists
    7ab428981537: Layer already exists
    8f72175a5946: Pushed
    v19: digest: sha256:8537562cb2a083953fb6f41c74facdfa515e405bf58c53096eb33b8409527011 size: 1158
    deployment "xiaoniao" image updated
    Finished: SUCCESS

    浏览器测试截图

    2、一键回滚

    jenkins web页面配置

    控制台输出

    Started by user luoahong
    Running as SYSTEM
    Building in workspace /root/.jenkins/workspace/xiaoniao-rollout
    [xiaoniao-rollout] $ /bin/sh -xe /app/apache-tomcat-8.0.27/temp/jenkins2984771295776282597.sh
    + kubectl -s 192.168.118.188:8080 rollout undo deployment xiaoniao
    deployment "xiaoniao" rolled back
    Finished: SUCCESS

    测试截图

    整体项目截图

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  • 原文地址:https://www.cnblogs.com/luoahong/p/12969164.html
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