从零开始的云计算生活——第六十天，志在千里，使用Jenkins部署K8S - 指南

一.安装kubectl

1、配置yum源

cat <

2、安装kubectl

yum install -y kubectl

二.关联k8s

1.设置配置文件

此时由于没有关联，使用命令会报错

去k8s主机将.kube内容拷贝过来

回来发现命令已经可以使用了

再将.kube文件考到Jenkins账户里

使用Jenkins账户登录并使用

2.下载k8s插件并重启

3.选择cloud

4.查看k8s地址

5.查看证书文件，并解密

6.复制证书

7.填写命名空间

8.终端生成Secret

创建jenkins账户

kubectl create sa jenkins

创建role角色

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: default
name: pod-reader-role
rules:
- apiGroups: [""]
resources: ["pods"]
verbs: ["get", "list", "watch","create","update","delete"]
[root@k8s-master ~]# kubectl apply -f  role.txt
##若要给于jenkins用户对default命名空间下所有资源具有所有权限，可以修改为 ["*"]

添加bindroling绑定

kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: default
name: pod-reader-role-binding
subjects:
- kind: ServiceAccount
name: jenkins
namespace: default
roleRef:
kind: Role
name: pod-reader-role
apiGroup: rbac.authorization.k8s.io

生成token

kubectl -n default create token jenkins 

最后将token填写道“凭据”中

9.填写凭证（1个小时有效）

下面把Jenkins地址填上，再点击保存按钮就完成了

三.创建项目

选择pipeline

pipeline {
agent any
stages {
stage('Checkout Code') {
steps {
// 使用 SSH 方式拉取 Git 代码
git branch: 'master', // 替换为你的分支名称
url: 'git@192.168.71.131:/home/git/k8s' // 替换为你的 Git 仓库地址
}
}
stage('Deploy LNMP') {
steps {
script {
// 部署 LNMP 平台
sh 'kubectl apply -f /var/lib/jenkins/workspace/k8s-lnmp/nginx.yml'
}
}
}
}
}

建立git库

创建yml文件

---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx
spec:
replicas: 1
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:latest
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: nginx
spec:
selector:
app: nginx
ports:
- protocol: TCP
port: 80
targetPort: 80
type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: mysql
spec:
replicas: 1
selector:
matchLabels:
app: mysql
template:
metadata:
labels:
app: mysql
spec:
containers:
- name: mysql
image: mysql:5.7
env:
- name: MYSQL_ROOT_PASSWORD
value: "123.com"
ports:
- containerPort: 3306
---
apiVersion: v1
kind: Service
metadata:
name: mysql
spec:
selector:
app: mysql
ports:
- protocol: TCP
port: 3306
targetPort: 3306
type: ClusterIP
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: php
spec:
replicas: 1
selector:
matchLabels:
app: php
template:
metadata:
labels:
app: php
spec:
containers:
- name: php
image: php:7.4-fpm
ports:
- containerPort: 9000

更新仓库

git add .

设置忽略信息

开始构建

构建成功