# TKE上动态部署jenkins-slaves
本章我们来讲一下如何在TKE上搭建jenkins这个CI/CD工具，这边我们在进行构建的时候可以自动生成一个slave pod来进行走流水线，流水线跑完之后会自动销毁。
## 部署jenkins的rbac权限
```
[root@VM_0_13_centos jenkins]# cat rbac.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: jenkins2
namespace: jenkins
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: jenkins2
rules:
- apiGroups: ["extensions", "apps"]
resources: ["deployments"]
verbs: ["create", "delete", "get", "list", "watch", "patch", "update"]
- apiGroups: [""]
resources: ["services"]
verbs: ["create", "delete", "get", "list", "watch", "patch", "update"]
- apiGroups: [""]
resources: ["pods"]
verbs: ["create","delete","get","list","patch","update","watch"]
- apiGroups: [""]
resources: ["pods/exec"]
verbs: ["create","delete","get","list","patch","update","watch"]
- apiGroups: [""]
resources: ["pods/log"]
verbs: ["get","list","watch"]
- apiGroups: [""]
resources: ["secrets"]
verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: jenkins2
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: jenkins2
subjects:
- kind: ServiceAccount
name: jenkins2
namespace: jenkins
```
## 创建pvc进行jenkins的数据持久化
这边通过cbs卷挂载jenkins的数据
## 部署jenkins的应用
```
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: jenkins2
namespace: kube-ops
spec:
template:
metadata:
labels:
app: jenkins2
spec:
terminationGracePeriodSeconds: 10
serviceAccountName: jenkins2
containers:
- name: jenkins
image: jenkins/jenkins:lts
imagePullPolicy: IfNotPresent
ports:
- containerPort: 8080
name: web
protocol: TCP
- containerPort: 50000
name: agent
protocol: TCP
resources:
limits:
cpu: 1000m
memory: 1Gi
requests:
cpu: 500m
memory: 512Mi
livenessProbe:
httpGet:
path: /login
port: 8080
initialDelaySeconds: 60
timeoutSeconds: 5
failureThreshold: 12
readinessProbe:
httpGet:
path: /login
port: 8080
initialDelaySeconds: 60
timeoutSeconds: 5
failureThreshold: 12
volumeMounts:
- name: jenkinshome
subPath: jenkins2
mountPath: /var/jenkins_home
securityContext:
fsGroup: 1000
volumes:
- name: jenkinshome
persistentVolumeClaim:
claimName: opspvc
---
apiVersion: v1
kind: Service
metadata:
name: jenkins2
namespace: kube-ops
labels:
app: jenkins2
spec:
selector:
app: jenkins2
type: NodePort
ports:
- name: web
port: 8080
targetPort: web
nodePort: 30002
- name: agent
port: 50000
targetPort: agent
```
## 采用treafik暴露域名给jenkins
```
---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
name: jenkins
namespace: jenkins
spec:
entryPoints:
- web
routes:
- match: Host(`jenkins.tx.niewx.club`)
kind: Rule
services:
- name: jenkins2
port: 8080
```
## 访问初始化jenkins
查看登录的初始密码，然后安装好推荐的插件，安装好之后配置账号，直接登录即可。
```
cat /var/lib/jenkins/secrets/initialAdminPassword
```
## 安装Kubernetes-plugin 插件
我这边已经安装好了，可以选择可选插件输入Kubernetes搜索找到插件进行安装
## 连接TKE集群
在“系统配置”面板最下方，选择“云”模块下的【新增一个云】>【Kubernetes】。如下图所示
对应的证书文件和token以及api地址可以从TKE集群中节点上的下面文件获取
集群证书获取
```
[root@VM_1_4_centos ~]# cat /etc/kubernetes/cluster-ca.crt
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
```
apiserver地址和token
```
[root@VM_1_4_centos ~]# cat .kube/config
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: LS0tLS1CRUdJNDQWJD....
server: https://169.xx.xx.xx:60002
name: local
contexts:
- context:
cluster: local
user: admin
name: master
current-context: master
kind: Config
preferences: {}
users:
- name: admin
user:
token: MUrM6Aj4qwgKKjwF....
```
将上述获取的填入集群配置
其他配置如下图所示，我们jenkins的master采用的hosts模式，所以这边直接用节点的8080端口
slave 的 pod的配置如下
## 创建测试项目进行构建
```
echo "测试 Kubernetes 动态生成 jenkins slave"
echo "==============docker in docker==========="
docker info
echo "=============kubectl============="
kubectl get pods
```
## 执行任务构建
执行构建会自动生成一个slave pod，执行任务结束后会自动删除掉
```
[root@VM_1_4_centos ~]# kubectl get pod -n jenkins
NAME READY STATUS RESTARTS AGE
jenkins2-574678b486-8r4qz 1/1 Running 0 2d5h
jnlp-7zv3k 1/1 Running 0 14s
```
## 参考文档