如何搭建自己的CI/CD平台:Gitlab+Jenkins+Docker+Harbor+K8s集群搭建CICD平台

山河已无恙 发表于 2022/02/04 03:38:00 2022/02/04
【摘要】 如果你讨厌一个人,你实际讨厌的是你自己的某些部分。我们自身没有的东西,是不会干扰到我们的。仁者见仁,智者见智。——德尔曼 黑塞《德米安》

写在前面


  • 聊聊CICD环境搭建以及一个基于Hexo的博客系统在CICD流程中的配置Demo
  • 很早就想着写这样一篇博文,但是没有时间,之前写了一半,正好春节假期把剩下的一般写完.
  • 本文属于Devpos实战类文章,基本没有理论,所有,小伙伴需要对devops有些基本的了解,
  • 博文中讲的CICD属于Devops的一部分
  • 当然小伙伴们也可以找一些云服务商提供的商业的Depops平台去学习,一般有免费的体验,比如华为云的软开云平台。
  • 博文涉及内容:
    • Gitlab+Jenkins+Docker+Harbor+K8S集群 CICD搭建教程
    • 在搭建好的CICD平台上持续集成部署hexo博客系统,Demo有些简陋,仅用于学习。
  • 其中Gitlab+Jenkins +Harbor都是通过容器化部署
  • 篇幅有限,关于CD环境k8s集群这里用之前部署好的,并且已经做了kubeconfig证书,关于这方便感兴趣小伙伴可以看看我之前的文章
  • 下面为涉及到的机器:
用到的机器 ip 域名
客户机 192.168.26.1 本地物理机:
Gitlab+Jenkins+Docker 192.168.26.55 虚机:liruilongs.github.io
docker镜像仓库:harbor 192.168.26.56 虚机:vms56.liruilongs.github.io
k8s集群-master节点 192.168.26.81 虚机:vms81.liruilongs.github.io
k8s集群-node节点 192.168.26.82 虚机:vms82.liruilongs.github.io
k8s集群-node节点 192.168.26.83 虚机:vms83.liruilongs.github.io
拓扑图
这里客户机用本地的IDE持续编码,然后push代码到gitlabgitlab中的web钩子触发jenkins中配置好的构建触发器,通过shell命令拉取gitlab仓库中的代码,然后通过拉取的应用源码Dockerfile文件来构建应用镜像,构建完成后将应用镜像push到harbor私有镜像仓库,然后通过shell命令的方式在jenkins中用kubelet客户端镜像从私有仓库拉取到k8s集群并更新其deploy中的镜像,默认deploy更新副本的方式为滚动更新,整个流程中,只有客户机push代码是手手动的方式,其他全是自动
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上帝借由各种途径使人变得孤独,好让我们可以走向自己。 ——赫尔曼·黑塞《德米安》


一、CICD服务器环境搭建

CI即为持续集成(Continue Integration,简称CI),用通俗的话讲,就是持续的整合版本库代码编译后制作应用镜像。建立有效的持续集成环境可以减少开发过程中一些不必要的问题、提高代码质量、快速迭代等,

常用的工具和平台有:

Jenkins:基于Java开发的一种持续集成工具,用于监控持续重复的工作,旨在提供一个开放易用的软件平台,使软件的持续集成变成可能。
Bamboo: 是一个企业级商用软件,可以部署在大规模生产环境中。

CD即持续交付Continuous Delivery和持续部署Continuous Deployment,用通俗的话说,即可以持续的部署到生产环境给客户使用,这里分为两个阶段,持续交付我理解为满足上线条件的过程,但是没有上线,持续部署,即为上线应用的过程

关于CD环境,我们使用以前搭建好的K8s集群,K8s集群可以实现应用的健康检测,动态扩容,滚动更新等优点,关于K8s集群的搭建,小伙伴可以看看我的其他文章

我们来搭建CI服务器:操作服务器: liruilongs.github.io:192.168.26.55

docker 环境安装

拉取镜像,启动并设置开机自启

┌──[root@liruilongs.github.io]-[~]
└─$ yum -y install docker-ce
┌──[root@liruilongs.github.io]-[~]
└─$ systemctl enable docker --now

配置docker加速器

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://2tefyfv7.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

1.安装GitLab 并配置

GitLab 不多介绍。一个基于Git的版本控制平台,,提供了Git仓库管理、代码审查、问题跟踪、活动反馈和wiki,当然同时也提供了

┌──[root@liruilongs.github.io]-[~]
└─$ docker pull beginor/gitlab-ce
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创建共享卷目录

┌──[root@liruilongs.github.io]-[~]
└─$ mkdir -p /data/gitlab/etc/ /data/gitlab/log /data/gitlab/data
┌──[root@liruilongs.github.io]-[~]
└─$ chmod 777 /data/gitlab/etc/ /data/gitlab/log /data/gitlab/data

创建 gitlab 容器

┌──[root@liruilongs.github.io]-[~]
└─$ docker run -itd --name=gitlab --restart=always --privileged=true   -p 8443:443  -p 80:80 -p 222:22 -v  /data/gitlab/etc:/etc/gitlab -v  /data/gitlab/log:/var/log/gitlab -v  /data/gitlab/data:/var/opt/gitlab  beginor/gitlab-ce
acc95b2896e8475915275d5eb77c7e63f63c31536432b68508f2f216d4fec634
┌──[root@liruilongs.github.io]-[~]
└─$ docker ps
CONTAINER ID   IMAGE               COMMAND             CREATED          STATUS                             PORTS                                                                                                             NAMES
acc95b2896e8   beginor/gitlab-ce   "/assets/wrapper"   53 seconds ago   Up 51 seconds (health: starting)   0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:222->22/tcp, :::222->22/tcp, 0.0.0.0:8443->443/tcp, :::8443->443/tcp   gitlab
┌──[root@liruilongs.github.io]-[~]
└─$
┌──[root@liruilongs.github.io]-[~]
└─$# 

切记:这里的端口要设置成80,要不push项目会提示没有报错,如果宿主机端口被占用,需要把这个端口腾出来

关闭容器修改配置文件

┌──[root@liruilongs.github.io]-[~]
└─$ docker stop gitlab
gitlab

external_url 'http://192.168.26.55’

┌──[root@liruilongs.github.io]-[~]
└─$ cat /data/gitlab/etc/gitlab.rb | grep external_url
##! For more details on configuring external_url see:
# external_url 'GENERATED_EXTERNAL_URL'
# registry_external_url 'https://registry.gitlab.example.com'
# pages_external_url "http://pages.example.com/"
# gitlab_pages['artifacts_server_url'] = nil # Defaults to external_url + '/api/v4'
# mattermost_external_url 'http://mattermost.example.com'
┌──[root@liruilongs.github.io]-[~]
└─$ sed -i "/external_url 'GENERATED_EXTERNAL_URL'/a external_url\t'http://192.168.26.55' "  /data/gitlab/etc/gitlab.rb
┌──[root@liruilongs.github.io]-[~]
└─$ cat /data/gitlab/etc/gitlab.rb | grep external_url
##! For more details on configuring external_url see:
# external_url 'GENERATED_EXTERNAL_URL'
external_url    'http://192.168.26.55'
# registry_external_url 'https://registry.gitlab.example.com'
# pages_external_url "http://pages.example.com/"
# gitlab_pages['artifacts_server_url'] = nil # Defaults to external_url + '/api/v4'
# mattermost_external_url 'http://mattermost.example.com'
┌──[root@liruilongs.github.io]-[~]
└─$

gitlab_rails[‘gitlab_ssh_host’] = '192.168.26.55’

┌──[root@liruilongs.github.io]-[~]
└─$ cat /data/gitlab/etc/gitlab.rb | grep gitlab_ssh_host
# gitlab_rails['gitlab_ssh_host'] = 'ssh.host_example.com'
┌──[root@liruilongs.github.io]-[~]
└─$ sed -i "/gitlab_ssh_host/a gitlab_rails['gitlab_ssh_host'] = '192.168.26.55' "  /data/gitlab/etc/gitlab.rb
┌──[root@liruilongs.github.io]-[~] 
└─$ cat /data/gitlab/etc/gitlab.rb | grep gitlab_ssh_host
# gitlab_rails['gitlab_ssh_host'] = 'ssh.host_example.com'
gitlab_rails['gitlab_ssh_host'] = '192.168.26.55'
┌──[root@liruilongs.github.io]-[~]
└─$

gitlab_rails[gitlab_shell_ssh_port] = 222

┌──[root@liruilongs.github.io]-[~]
└─$ cat /data/gitlab/etc/gitlab.rb | grep gitlab_shell_ssh
# gitlab_rails['gitlab_shell_ssh_port'] = 22
┌──[root@liruilongs.github.io]-[~]
└─$ sed -i "/gitlab_shell_ssh_port/a gitlab_rails['gitlab_shell_ssh_port'] = 222" /data/gitlab/etc/gitlab.rb
┌──[root@liruilongs.github.io]-[~]
└─$ cat /data/gitlab/etc/gitlab.rb | grep gitlab_shell_ssh
# gitlab_rails['gitlab_shell_ssh_port'] = 22
gitlab_rails[gitlab_shell_ssh_port] = 222
┌──[root@liruilongs.github.io]-[~]
└─$
┌──[root@liruilongs.github.io]-[~]
└─$ vim /data/gitlab/data/gitlab-rails/etc/gitlab.yml
┌──[root@liruilongs.github.io]-[~]
└─$
##############################
 gitlab:
    ## Web server settings (note: host is the FQDN, do not include http://)
    host: 192.168.26.55
    port: 80
    https: false

修改完配置文件之后。直接启动容器

┌──[root@liruilongs.github.io]-[~]
└─$ docker start gitlab
在宿主机所在的物理机访问,http://192.168.26.55/ ,会自动跳转到修改密码(root用户),如果密码设置的没有满足一定的复杂性,则会报500,需要从新设置
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登录进入仪表盘
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然后我们简单测试一下,push一个项目上去,这里的项目是一个基于hexo的博客系统
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项目成功上传Gitlab
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相关的git命令

PS F:\blogger> git init
Initialized empty Git repository in F:/blogger/.git/
PS F:\blogger> git config --global user.name "Administrator"
PS F:\blogger> git config --global user.email "admin@example.com"
PS F:\blogger> git remote add origin http://192.168.26.55/root/blog.git
PS F:\blogger> git add .
PS F:\blogger> git commit -m "Initial commit"
PS F:\blogger> git push -u origin master
Enumerating objects: 322, done.
Counting objects: 100% (322/322), done.
Delta compression using up to 8 threads
Compressing objects: 100% (302/302), done.
Writing objects: 100% (322/322), 11.31 MiB | 9.22 MiB/s, done.
Total 322 (delta 24), reused 0 (delta 0)
remote: Resolving deltas: 100% (24/24), done.
To http://192.168.26.55/root/blog.git
 * [new branch]      master -> master
Branch 'master' set up to track remote branch 'master' from 'origin'.
PS F:\blogger>

2.安装配置远程镜像仓库harbor

下面我们要配置私有的docker镜像仓库,用到的机器为:

操作服务器:vms56.liruilongs.github.io:192.168.26.56

这里仓库我们选择harbor,因为有web页面,当然也可以使用 registry

harbor的配置

harbor的安装使用步骤
安装并启动docker并安装docker-compose
上传harbor的离线包
导入harbor的镜像
编辑harbor.yml
修改hostname 为自己的主机名,不用证书需要注释掉https
harbor_admin_password 登录密码
安装compose
运行脚本 ./install.sh
在浏览器里输入IP访问
docker login IP --家目录下会有一个.docker文件夹

下面我们开始安装

首先需要设置selinux、防火墙

┌──[root@vms56.liruilongs.github.io]-[~]
└─#getenforce
Disabled
┌──[root@vms56.liruilongs.github.io]-[~]
└─#systemctl disable firewalld.service --now
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

安装并启动docker并安装docker-compose,关于docker-compose,这里不用了解太多,一个轻量的docker编排工具

┌──[root@vms56.liruilongs.github.io]-[~]
└─#yum install -y docker-ce
┌──[root@vms56.liruilongs.github.io]-[~]
└─#yum install -y docker-compose

解压harbor 安装包:harbor-offline-installer-v2.0.6.tgz,导入相关镜像

┌──[root@vms56.liruilongs.github.io]-[/]
└─#ls
bin   dev  harbor-offline-installer-v2.0.6.tgz  lib    machine-id  mnt  proc  run   srv  tmp  var
boot  etc  home                                 lib64  media       opt  root  sbin  sys  usr
┌──[root@vms56.liruilongs.github.io]-[/]
└─#tar zxvf harbor-offline-installer-v2.0.6.tgz
harbor/harbor.v2.0.6.tar.gz
harbor/prepare
harbor/LICENSE
harbor/install.sh
harbor/common.sh
harbor/harbor.yml.tmpl
┌──[root@vms56.liruilongs.github.io]-[/]
└─#docker load -i harbor/harbor.v2.0.6.tar.gz

修改配置文件

┌──[root@vms56.liruilongs.github.io]-[/]
└─#cd  harbor/
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#ls
common.sh  harbor.v2.0.6.tar.gz  harbor.yml.tmpl  install.sh  LICENSE  prepare
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#cp harbor.yml.tmpl harbor.yml
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#ls
common.sh  harbor.v2.0.6.tar.gz  harbor.yml  harbor.yml.tmpl  install.sh  LICENSE  prepare
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#vim harbor.yml
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#

harbor.yml:设置IP和用户名密码

  4 # DO NOT use localhost or 127.0.0.1, because Harbor needs to be accessed by external clients.
  5 hostname: 192.168.26.56
  6
  7 # http related config
  .......
  12 # https related config
  13 #https:
  14   # https port for harbor, default is 443
  15 #  port: 443
  16   # The path of cert and key files for nginx
  17 #  certificate: /your/certificate/path
  18 #  private_key: /your/private/key/path
  ....
  33 # Remember Change the admin password from UI after launching Harbor.
  34 harbor_admin_password: Harbor12345
  35
  36 # Harbor DB configuration

./prepare && ./install.sh

┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#./prepare
prepare base dir is set to /harbor
WARNING:root:WARNING: HTTP protocol is insecure. Harbor will deprecate http protocol in the future. Please make sure to upgrade to https
Generated configuration file: /config/log/logrotate.conf
Generated configuration file: /config/log/rsyslog_docker.conf
Generated configuration file: /config/nginx/nginx.conf
Generated configuration file: /config/core/env
Generated configuration file: /config/core/app.conf
Generated configuration file: /config/registry/config.yml
Generated configuration file: /config/registryctl/env
Generated configuration file: /config/registryctl/config.yml
Generated configuration file: /config/db/env
Generated configuration file: /config/jobservice/env
Generated configuration file: /config/jobservice/config.yml
Generated and saved secret to file: /data/secret/keys/secretkey
Successfully called func: create_root_cert
Generated configuration file: /compose_location/docker-compose.yml
Clean up the input dir
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#./install.sh

[Step 0]: checking if docker is installed ...

Note: docker version: 20.10.9

[Step 1]: checking docker-compose is installed ...

Note: stopping existing Harbor instance ...
Removing harbor-jobservice ... done
Removing nginx             ... done
Removing harbor-core       ... done
Removing registry          ... done
Creating harbor-log ... done
Removing harbor-portal     ... done
Removing redis             ... done
Removing network harbor_harbor

Creating registry ... done
Creating harbor-core ... done
Creating network "harbor_harbor" with the default driver
Creating nginx ... done
Creating redis ...
Creating registry ...
Creating harbor-portal ...
Creating registryctl ...
Creating harbor-db ...
Creating harbor-core ...
Creating harbor-jobservice ...
Creating nginx ...
✔ ----Harbor has been installed and started successfully.----
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#

查看相关的镜像

┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#docker ps
CONTAINER ID   IMAGE                                COMMAND                  CREATED          STATUS
        PORTS                                   NAMES
0efcf7b83dcf   goharbor/nginx-photon:v2.0.6         "nginx -g 'daemon of…"   16 minutes ago   Up 16 minutes (healthy)   0.0.0.0:80->8080/tcp, :::80->8080/tcp   nginx
ee9d418c7cee   goharbor/harbor-jobservice:v2.0.6    "/harbor/entrypoint.…"   16 minutes ago   Up 16 minutes (healthy)                                           harbor-jobservice
6052c481dbd0   goharbor/harbor-core:v2.0.6          "/harbor/entrypoint.…"   16 minutes ago   Up 16 minutes (healthy)                                           harbor-core
001ff83b037d   goharbor/harbor-db:v2.0.6            "/docker-entrypoint.…"   17 minutes ago   Up 16 minutes (healthy)   5432/tcp                                harbor-db
2ebc81356ef1   goharbor/harbor-registryctl:v2.0.6   "/home/harbor/start.…"   17 minutes ago   Up 16 minutes (healthy)                                           registryctl
6ca721c0fa75   goharbor/harbor-portal:v2.0.6        "nginx -g 'daemon of…"   17 minutes ago   Up 16 minutes (healthy)   8080/tcp                                harbor-portal
2b06e2cf91ab   goharbor/registry-photon:v2.0.6      "/home/harbor/entryp…"   17 minutes ago   Up 16 minutes (healthy)   5000/tcp                                registry
2292a20780e2   goharbor/redis-photon:v2.0.6         "redis-server /etc/r…"   17 minutes ago   Up 16 minutes (healthy)   6379/tcp                                redis
a0e3e49cf9db   goharbor/harbor-log:v2.0.6           "/bin/sh -c /usr/loc…"   17 minutes ago   Up 17 minutes (healthy)   127.0.0.1:1514->10514/tcp               harbor-log
┌──[root@vms56.liruilongs.github.io]-[/harbor]
└─#

访问测试

harbor
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CI服务器的docker配置

这里因为我们要在192.168.26.55(CI服务器)上push镜像到192.168.26.56(私仓),所有需要修改CI服务器上的Docker配置。添加仓库地址

操作服务器: liruilongs.github.io:192.168.26.55

┌──[root@liruilongs.github.io]-[~]
└─$ cat /etc/docker/daemon.json
{
  "registry-mirrors": ["https://2tefyfv7.mirror.aliyuncs.com"]
}
┌──[root@liruilongs.github.io]-[~]
└─$ vim /etc/docker/daemon.json

修改后的配置文件

┌──[root@liruilongs.github.io]-[~]
└─$ cat /etc/docker/daemon.json
{
  "registry-mirrors": ["https://2tefyfv7.mirror.aliyuncs.com"],
  "insecure-registries": ["192.168.26.56"]

}

加载使其生效

┌──[root@liruilongs.github.io]-[~]
└─$ systemctl daemon-reload
┌──[root@liruilongs.github.io]-[~]
└─$ systemctl restart docker
┌──[root@liruilongs.github.io]-[~]

CI机器简单测试一下

┌──[root@liruilongs.github.io]-[~]
└─$ docker login 192.168.26.56
Authenticating with existing credentials...
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
┌──[root@liruilongs.github.io]-[~]
└─$ docker tag busybox 192.168.26.56/demo/busybox
┌──[root@liruilongs.github.io]-[~]
└─$ docker push 192.168.26.56/demo/busybox
Using default tag: latest
The push refers to repository [192.168.26.56/demo/busybox]
cfd97936a580: Pushed
latest: digest: sha256:febcf61cd6e1ac9628f6ac14fa40836d16f3c6ddef3b303ff0321606e55ddd0b size: 527
┌──[root@liruilongs.github.io]-[~]
└─$

push一个镜像,可以在私仓的web页面查看

harbor
在这里插入图片描述

到这里。我们配置了镜像仓库

3.安装配置jenkins

操作服务器: liruilongs.github.io:192.168.26.55

镜像jenkins拉取

┌──[root@liruilongs.github.io]-[~]
└─$ docker pull jenkins/jenkins:centos7-jdk8
。。。。。。
┌──[root@liruilongs.github.io]-[~]
└─$ docker history jenkins/jenkins:centos7-jdk8
IMAGE          CREATED       CREATED BY                                      SIZE      COMMENT
de64a05279ba   5 days ago    LABEL org.opencontainers.image.vendor=Jenkin…   0B        buildkit.dockerfile.v0
<missing>      5 days ago    COPY install-plugins.sh /usr/local/bin/insta…   10.6kB    buildkit.dockerfile.v0
。。。。。。。。。。
<missing>      5 days ago    ARG JENKINS_HOME=/var/jenkins_home              0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG agent_port=50000                            0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG http_port=8080                              0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG gid=1000                                    0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG uid=1000                                    0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG group=jenkins                               0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG user=jenkins                                0B        buildkit.dockerfile.v0
<missing>      5 days ago    RUN |5 TARGETARCH=amd64 COMMIT_SHA=0b797f024…   10.4MB    buildkit.dockerfile.v0
<missing>      5 days ago    COPY git_lfs_pub.gpg /tmp/git_lfs_pub.gpg # …   62.5kB    buildkit.dockerfile.v0
<missing>      5 days ago    ARG GIT_LFS_VERSION=3.0.1                       0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG COMMIT_SHA                                  0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG TARGETARCH                                  0B        buildkit.dockerfile.v0
<missing>      5 days ago    RUN |2 TARGETARCH=amd64 COMMIT_SHA=0b797f024…   426MB     buildkit.dockerfile.v0
<missing>      5 days ago    ARG COMMIT_SHA                                  0B        buildkit.dockerfile.v0
<missing>      5 days ago    ARG TARGETARCH                                  0B        buildkit.dockerfile.v0
<missing>      5 days ago    ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_AL…   0B        buildkit.dockerfile.v0
<missing>      7 weeks ago   /bin/sh -c #(nop)  CMD ["/bin/bash"]            0B
<missing>      7 weeks ago   /bin/sh -c #(nop)  LABEL org.label-schema.sc…   0B
<missing>      7 weeks ago   /bin/sh -c #(nop) ADD file:b3ebbe8bd304723d4…   204MB
┌──[root@liruilongs.github.io]-[~]
└─$
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创建共享卷,修改所属组和用户,和容器里相同

这里为什么要改成 1000,是因为容器里是以 jenkins 用户的身份去读写数据,而在容器里jenkins 的 uid 是 1000,

┌──[root@liruilongs.github.io]-[~]
└─$ mkdir /jenkins && chown 1000:1000 /jenkins
┌──[root@liruilongs.github.io]-[~]
└─$ # 这里为什么要改成 1000,是因为容器里是以 jenkins 用户的身份去读写数据,而在容器里jenkins 的 uid 是 1000,

创建创建 jenkins 容器

┌──[root@liruilongs.github.io]-[~]
└─$ cat jenkins.docker.sh
docker run -dit -p 8080:8080 -p 50000:50000 --name jenkins  --privileged=true --restart=always -v /jenkins:/var/jenkins_home jenkins/jenkins:centos7-jdk8
┌──[root@liruilongs.github.io]-[~]
└─$ docker run -dit -p 8080:8080 -p 50000:50000 --name jenkins  --privileged=true --restart=always -v /jenkins:/var/jenkins_home jenkins/jenkins:centos7-jdk8
39afa098c8a56973ce1559d374b058b8e6091175b5b783d613a9f2e356827684
┌──[root@liruilongs.github.io]-[~]
└─$ docker ps | grep jenkins
39afa098c8a5   jenkins/jenkins:centos7-jdk8   "/sbin/tini -- /usr/…"   3 minutes ago       Up 2 minutes                 0.0.0.0:8080->8080/tcp, :::8080->8080/tcp, 0.0.0.0:50000->50000/tcp, :::50000->50000/tcp                          jenkins
访问jenkins
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先打开浏览器打开这个页面,让其初始化一下,直到看到界面
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因为要修改 jenkins 的配置,所以此时关闭 jenkins 容器
┌──[root@liruilongs.github.io]-[~]
└─$ docker stop jenkins
jenkins

更换国内清华大学镜像,Jenkins下载插件特别慢,更换国内的清华源的镜像地址会快不少

┌──[root@liruilongs.github.io]-[~]
└─$ cat /jenkins/hudson.model.UpdateCenter.xml
<?xml version='1.1' encoding='UTF-8'?>
<sites>
  <site>
    <id>default</id>
    <url>https://updates.jenkins.io/update-center.json</url>
  </site>
</sites>
┌──[root@liruilongs.github.io]-[~]
└─$
┌──[root@liruilongs.github.io]-[~]
└─$ sed -i  's#updates.jenkins.io/update-center.json#mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json#g '  /jenkins/hudson.model.UpdateCenter.xml
┌──[root@liruilongs.github.io]-[~]
└─$ cat /jenkins/hudson.model.UpdateCenter.xml
<?xml version='1.1' encoding='UTF-8'?>
<sites>
  <site>
    <id>default</id>
    <url>https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json</url>
  </site>
</sites>┌──[root@liruilongs.github.io]-[~]
└─$

"http://www.google.com/" 替换为 "http://www.baidu.com/"

yum -y install jq
┌──[root@liruilongs.github.io]-[~]
└─$ cat /jenkins/updates/default.json | jq '.connectionCheckUrl'
"http://www.google.com/"
┌──[root@liruilongs.github.io]-[~]
└─$ cat /jenkins/updates/default.json | jq 'keys'
[
  "connectionCheckUrl",
  "core",
  "deprecations",
  "generationTimestamp",
  "id",
  "plugins",
  "signature",
  "updateCenterVersion",
  "warnings"
]
┌──[root@liruilongs.github.io]-[~]
└─$ sed -i    s#http://www.google.com/#http://www.baidu.com/#g  /jenkins/updates/default.json

替换后查看

┌──[root@liruilongs.github.io]-[~]
└─$ cat /jenkins/updates/default.json | jq '.connectionCheckUrl'
"http://www.baidu.com/"
┌──[root@liruilongs.github.io]-[~]
└─$ cat /jenkins/updates/default.json | jq 'keys'
[
  "connectionCheckUrl",
  "core",
  "deprecations",
  "generationTimestamp",
  "id",
  "plugins",
  "signature",
  "updateCenterVersion",
  "warnings"
]
┌──[root@liruilongs.github.io]-[~]
└─$

重启docker,获取登录密匙

┌──[root@liruilongs.github.io]-[~]
└─$ docker start jenkins
jenkins
┌──[root@liruilongs.github.io]-[~]
└─$
┌──[root@liruilongs.github.io]-[~]
└─$ cat /jenkins/secrets/initialAdminPassword
be15eaabc4c946de913dd5af8636cae9

需要修改jenkins绑定的docker的启动参数ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2376 -H fd:// --containerd=/run/containerd/containerd.sock

修改镜像库启动参数后需要重启docker

┌──[root@vms56.liruilongs.github.io]-[~]
└─#systemctl daemon-reload
┌──[root@vms56.liruilongs.github.io]-[~]
└─#systemctl restart docker

安装 docker 插件

jenkins相关配置,这里的配置照着图片就好,需要配置一个docker集群供jenkins来根据Dockerfile构建镜像并push到私仓,这里docker集群即为CI服务器的docker
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修改镜像库启动参数,ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2376 -H fd:// --containerd=/run/containerd/containerd.sock
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关联docker和jenkins
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jenkins 安全设置

后面 gitlab 要和 jenkins 进行联动,所以必须要需要对 jenkins 的安全做一些设置,依次点击 系统管理-全局安全配置-授权策略,勾选"匿名用户具有可读权限"

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添加 JVM 运行参数 -Dhudson.security.csrf.GlobalCrumbIssuerConfiguration.DISABLE_CSRF_PROTECTION=true 运行跨站请求访问

┌──[root@liruilongs.github.io]-[~]
└─$ docker exec -u root -it jenkins bash
[root@39afa098c8a5 /]# ls
anaconda-post.log  bin  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
[root@39afa098c8a5 /]# vi /usr/local/bin/jenkins.sh
[root@39afa098c8a5 /]# exit
exit
┌──[root@liruilongs.github.io]-[~]
└─$

下载kubectl客户端工具

这里的话我们要通过jenkins上的kubectl客户端连接k8s,所以我们需要安装一个k8s的客户端kubectl,下载k8s客户端

wget  https://storage.googleapis.com/kubernetes-release/release/v1.22.2/bin/linux/amd64/kubectl
┌──[root@liruilongs.github.io]-[~]
└─$ yum install -y kubectl-1.22.2-0 --disableexcludes=kubernetes

拷贝 kubeconfig 文件

然后拷贝kubeconfig 证书,k8s集群中查看证书位置,这里的证书是之前创建好的,小伙伴可以看看我之前的文章

┌──[root@liruilongs.github.io]-[~]
└─$ scp root@192.168.26.81:/root/ansible/k8s-rbac-create/kc1 .
Warning: Permanently added '192.168.26.81' (ECDSA) to the list of known hosts.
root@192.168.26.81's password:
kc1                                                     100% 5566   108.7KB/s   00:00

拷贝证书和k8s集群客户端工具到jenkins容器内

┌──[root@liruilongs.github.io]-[~]
└─$ docker cp kc1 jenkins:/
┌──[root@liruilongs.github.io]-[~]
└─$ docker cp kubectl jenkins:/
┌──[root@liruilongs.github.io]-[~]
└─$

kubectl命令测试

┌──[root@liruilongs.github.io]-[~]
└─$ docker  exec -u root -it jenkins bash
[root@39afa098c8a5 /]# ls
anaconda-post.log  bin  dev  etc  home  kc1  kubectl  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
[root@39afa098c8a5 /]# ./kubectl --kubeconfi=kc1 get pods -A
Error: unknown flag: --kubeconfi
See 'kubectl get --help' for usage.
[root@39afa098c8a5 /]# ./kubectl --kubeconfig=kc1 get pods -A
Error from server (Forbidden): pods is forbidden: User "liruilong" cannot list resource "pods" in API group "" at the cluster scope

发现没有权限,这里我们为了方便,直接赋予集群中的cluster-admin角色

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-rbac-create]
└─$kubectl create clusterrolebinding  test  --clusterrole=cluster-admin --user=liruilong
clusterrolebinding.rbac.authorization.k8s.io/test created
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-rbac-create]
└─$

命令测试没有问题

[root@39afa098c8a5 /]# ./kubectl --kubeconfig=kc1 get  nodes
NAME                         STATUS     ROLES                  AGE   VERSION
vms81.liruilongs.github.io   Ready      control-plane,master   51d   v1.22.2
vms82.liruilongs.github.io   NotReady   <none>                 51d   v1.22.2
vms83.liruilongs.github.io   NotReady   <none>                 51d   v1.22.2
[root@39afa098c8a5 /]#

二 、hexo博客系统CICD实战

4. k8s集群中配置hexo生产环境高可用

我们要部署Nginx来运行hexo博客系统,hexo编译完后为一堆静态文件,所以我们需要创建一个svc和一个deploy,使用SVC提供服务,使用deploy提供服务能力,使用Nginx+hexo的静态文件构成的镜像

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: nginx
  name: nginxdep
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: nginx
    spec:
      containers:
      - image: blog
        name: web
        resources:
          requests:
            cpu: 100m
      restartPolicy: Always

deployments创建

这里我们先用一个Nginx镜像来代替hexo博客的镜像

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl apply  -f nginx.yaml
deployment.apps/nginxdep created

查看deployments和pod

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl get deployments.apps  | grep nginxdep
nginxdep                  2/2     2            2           109s
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl get pods -o wide  | grep web
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl get pods -o wide  | grep nginxdep
nginxdep-645bf755b9-2w8jv                            1/1     Running   0                 2m22s   10.244.171.164   vms82.liruilongs.github.io   <none>           <none>
nginxdep-645bf755b9-jfqxj                            1/1     Running   0                 2m22s   10.244.171.157   vms82.liruilongs.github.io   <none>           <none>
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$

service创建

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl expose deploy    nginxdep  --port=8888 --target-port=80 --type=NodePort
service/nginxdep exposed
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl get svc -o wide | grep nginxdep
nginxdep                            NodePort    10.106.217.50    <none>        8888:31964/TCP                 16s   app=nginx

访问测试没有问题,之后我们配置好jenkins上的触发器,直接替换就OK

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$curl 127.0.0.1:31964
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$

5.k8s集群配置私仓地址

我们通过kubectl set命令更新deploy的镜像时,获取的镜像是通过私仓获取的,所以需要在启动参数添加私仓地址

ExecStart=/usr/bin/dockerd --insecure-registry 192.168.26.56 -H fd:// --containerd=/run/containerd/containerd.sock

这里所有的节点都需要设置后重启docker

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$vim  /usr/lib/systemd/system/docker.service
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$systemctl daemon-reload ;systemctl restart docker &
[1] 23273
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$ssh root@192.168.26.82
Last login: Sun Jan 16 06:09:07 2022 from 192.168.26.1
┌──[root@vms82.liruilongs.github.io]-[~]
└─$vim  /usr/lib/systemd/system/docker.service
┌──[root@vms82.liruilongs.github.io]-[~]
└─$systemctl daemon-reload ;systemctl restart docker &
[1] 26843
┌──[root@vms82.liruilongs.github.io]-[~]
└─$exit
登出
Connection to 192.168.26.82 closed.

6.jenkins配置CICD流程

访问jenkins,接下来才是重点,我们要的jenkins上配置整个CICD流程,从而实现自动化

访问jenkins,接下来才是重点,我们要的jenkins上配置整个CICD流程,从而实现自动化
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这里的Token我们设置为:4bf636c8214b7ff0a0fb,同时需要记住访问方式:JENKINS_URL/job/liruilong-cicd/build?token=TOKEN_NAME
构建触发器选择shell构建:克隆代码
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选择镜像构建
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构建镜像并push私仓
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这里切记需要添加私仓的认证信息,即上面设置的用户名和密码
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选择shell构建,更新镜像
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相关的文本信息

cd ~
rm -rf blog
git clone http://192.168.26.55/root/blog.git
/var/jenkins_home/blog/

192.168.26.56/library/blog:${BUILD_NUMBER}
export KUBECONFIG=/kc1;
/kubectl set image deployment/nginxdep  *="192.168.26.56/library/blog:${BUILD_NUMBER}" -n kube-system

7.配置 gitlab 和 jenkins 的联动

访问gitlab配置联动
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点击增加web钩子
/view/all/job/liruilong-cicd/build?token=
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到这里,联动已经配置完成

8.编写Dockerfile文件,更新代码测试

下面我们编译一下hexo,生成public的一个文件夹,然后上传gitlab

  PS F:\blogger> hexo g
  .....
  PS F:\blogger> git add .\public\
  PS F:\blogger> git commit -m "编译代码"
  PS F:\blogger> git push

同时需要编写Dockerfile文件来创建镜像

FROM docker.io/library/nginx:latest
MAINTAINER liruilong
ADD ./public/  /usr/share/nginx/html/
EXPOSE 80
CMD ["nginx", "-g","daemon off;"]
PS F:\blogger> git add .
PS F:\blogger> git commit -m "Dockcerfile文件编写"
[master 217e0ed] Dockcerfile文件编写
 1 file changed, 1 deletion(-)      
PS F:\blogger> git push 
Enumerating objects: 5, done.
Counting objects: 100% (5/5), done.
Delta compression using up to 8 threads
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 307 bytes | 307.00 KiB/s, done.
Total 3 (delta 2), reused 0 (delta 0)
To http://192.168.26.55/root/blog.git
   6690612..217e0ed  master -> master
PS F:\blogger> 
jenkins输出
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Started by remote host 192.168.26.1
Running as SYSTEM
Building in workspace /var/jenkins_home/workspace/liruilong-cicd
[liruilong-cicd] $ /bin/sh -xe /tmp/jenkins6108687102523328796.sh
+ cd /var/jenkins_home
+ rm -rf blog
+ git clone http://192.168.26.55/root/blog.git
Cloning into 'blog'...
Docker Build
Docker Build: building image at path /var/jenkins_home/blog
Step 1/5 : FROM docker.io/library/nginx:latest


 ---> f8f4ffc8092c

Step 2/5 : MAINTAINER liruilong


 ---> Running in e341b5562b64

Removing intermediate container e341b5562b64

 ---> 4e9f5aa47ab5

Step 3/5 : ADD ./public/  /usr/share/nginx/html/


 ---> 3956cff32507

Step 4/5 : EXPOSE 80


 ---> Running in b4c27124989d

Removing intermediate container b4c27124989d

 ---> ba9d1764d764

Step 5/5 : CMD ["nginx", "-g","daemon off;"]


 ---> Running in 61dca01a4883

Removing intermediate container 61dca01a4883

 ---> 2aadc5732a60

Successfully built 2aadc5732a60

Tagging built image with 192.168.26.56/library/blog:41
Docker Build Response : 2aadc5732a60
Pushing [192.168.26.56/library/blog:41]
The push refers to repository [192.168.26.56/library/blog]
89570901cdea: Preparing
65e1ea1dc98c: Preparing
88891187bdd7: Preparing
6e109f6c2f99: Preparing
0772cb25d5ca: Preparing
525950111558: Preparing
476baebdfbf7: Preparing
525950111558: Waiting
476baebdfbf7: Waiting
88891187bdd7: Layer already exists
6e109f6c2f99: Layer already exists
65e1ea1dc98c: Layer already exists
0772cb25d5ca: Layer already exists
89570901cdea: Pushing [>                                                  ]  301.6kB/28.75MB
89570901cdea: Pushing [==>                                                ]  1.193MB/28.75MB
476baebdfbf7: Layer already exists
525950111558: Layer already exists
89570901cdea: Pushing [======>                                            ]  3.917MB/28.75MB
89570901cdea: Pushing [==========>                                        ]  5.996MB/28.75MB
89570901cdea: Pushing [==============>                                    ]  8.097MB/28.75MB
89570901cdea: Pushing [==================>                                ]  10.76MB/28.75MB
89570901cdea: Pushing [=====================>                             ]  12.57MB/28.75MB
89570901cdea: Pushing [========================>                          ]   13.8MB/28.75MB
89570901cdea: Pushing [=========================>                         ]  14.71MB/28.75MB
89570901cdea: Pushing [===========================>                       ]  15.59MB/28.75MB
89570901cdea: Pushing [=============================>                     ]  16.79MB/28.75MB
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89570901cdea: Pushing [=====================================>             ]  21.55MB/28.75MB
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89570901cdea: Pushing [=========================================>         ]  23.64MB/28.75MB
89570901cdea: Pushing [==========================================>        ]  24.52MB/28.75MB
89570901cdea: Pushing [============================================>      ]  25.42MB/28.75MB
89570901cdea: Pushing [==============================================>    ]  26.61MB/28.75MB
89570901cdea: Pushing [===============================================>   ]  27.19MB/28.75MB
89570901cdea: Pushing [=================================================> ]  28.69MB/28.75MB
89570901cdea: Pushing [==================================================>]  29.32MB
89570901cdea: Pushed
41: digest: sha256:c90b64945a8d063f7bcdcc39f00f91b6d83acafcd6b2ec6aba5b070474bafc37 size: 1782
Cleaning local images [2aadc5732a60]
Docker Build Done
[liruilong-cicd] $ /bin/sh -xe /tmp/jenkins246013519648603221.sh
+ export KUBECONFIG=/kc1
+ KUBECONFIG=/kc1
+ /kubectl set image deployment/nginxdep '*=192.168.26.56/library/blog:41' -n kube-system
deployment.apps/nginxdep image updated
Finished: SUCCESS

9.访问hexo博客系统

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl get deployments.apps  | grep nginxdep
nginxdep                  2/2     2            2           30h
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl get pods -o wide  | grep nginxdep
nginxdep-bddfd9b5f-94d88                             1/1     Running   0                 110s   10.244.171.142   vms82.liruilongs.github.io   <none>           <none>
nginxdep-bddfd9b5f-z57qc                             1/1     Running   0                 35m    10.244.171.177   vms82.liruilongs.github.io   <none>           <none>
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl get svc -o wide | grep nginxdep
nginxdep                            NodePort    10.106.217.50    <none>        8888:31964/TCP                 30h   app=nginx
┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-deploy-create]
└─$kubectl describe  pods nginxdep-bddfd9b5f-94d88
Name:         nginxdep-bddfd9b5f-94d88
Namespace:    kube-system
Priority:     0
Node:         vms82.liruilongs.github.io/192.168.26.82
Start Time:   Fri, 04 Feb 2022 03:11:14 +0800
Labels:       app=nginx
              pod-template-hash=bddfd9b5f
Annotations:  cni.projectcalico.org/podIP: 10.244.171.142/32
              cni.projectcalico.org/podIPs: 10.244.171.142/32
Status:       Running
IP:           10.244.171.142
IPs:
  IP:           10.244.171.142
Controlled By:  ReplicaSet/nginxdep-bddfd9b5f
Containers:
  web:
    Container ID:   docker://669f48cb626d5067f40bb1aaa378268a7ee9879488b0b298a86271957c162316
    Image:          192.168.26.56/library/blog:41
    Image ID:       docker-pullable://192.168.26.56/library/blog@sha256:c90b64945a8d063f7bcdcc39f00f91b6d83acafcd6b2ec6aba5b070474bafc37
    Port:           <none>
    Host Port:      <none>
    State:          Running
      Started:      Fri, 04 Feb 2022 03:11:15 +0800
    Ready:          True
    Restart Count:  0
    Requests:
      cpu:        100m
    Environment:  <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-trn5n (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             True
  ContainersReady   True
  PodScheduled      True
Volumes:
  kube-api-access-trn5n:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   Burstable
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type    Reason     Age    From               Message
  ----    ------     ----   ----               -------
  Normal  Scheduled  4m10s  default-scheduler  Successfully assigned kube-system/nginxdep-bddfd9b5f-94d88 to vms82.liruilongs.github.io
  Normal  Pulling    4m9s   kubelet            Pulling image "192.168.26.56/library/blog:41"
  Normal  Pulled     4m9s   kubelet            Successfully pulled image "192.168.26.56/library/blog:41" in 67.814838ms
  Normal  Created    4m9s   kubelet            Created container web
  Normal  Started    4m9s   kubelet            Started container web

访问hexo博客系统
在这里插入图片描述
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