环境
生产实践-k8s安装Jenkins和Jenkins Kubernetes插件
环境要求：你需要一个正常可以使用的Kubernetes集群，集群中可以使用的内存大于等于4G。
Kubernetes版本1.18
思路
Jenkins插件可以在Kubernetes集群中运行动态jenkins-slave代理。
基于Kubernetes的docker，自动化在Kubernetes中运行的Jenkins-slave代理的缩放。
该插件为每个jenkins-slave代理创建Kubernetes Pod，并在每个构建后停止它。
在Kubernetes中jenkins-slave代理启动，会自动连接到Jenkins主控制器。 对于某些环境变量，会自动注入：
Jenkins_URL：Jenkins Web界面URL
jenkins_secret：身份验证的秘密密钥
jenkins_agent_name：jenkins代理的名称
jenkins_name：jenkins代理的名称（已弃用。仅用于向后兼容性）
不需要在Kubernetes内运行Jenkins Controller。
1、NFS（动态存储）
#安装
yum install -y nfs-utils rpcbind
mkdir -p /data/nfsdata
# 修改配置
$ vim /etc/exports
/data/nfsdata 192.168.31.* (rw,async,no_root_squash)
# 使配置生效
$ exportfs -r
# 服务端查看下是否生效
$ showmount -e localhost
Export list for localhost:
/data/nfsdata (everyone)2、helm安装nfs-client
stable https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts
helm添加这个源下载helm包
helm pull aliyuncs/nfs-client-provisioner
解压
tar -zxvf nfs-client-provisioner-1.2.8.tgz
修复values.yaml 三处
image:
repository: quay.io/external_storage/nfs-client-provisioner
tag: v3.1.0-k8s1.11
pullPolicy: IfNotPresent
nfs:
server: 192.168.31.73
path: /data/nfsdata
reclaimPolicy: Retain
3、创建namespace
kubectl create namespace jenkins
kubectl get namespaces4、持久化Jenkins数据
pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: jenkins-pvc
namespace: jenkins
spec:
storageClassName: "nfsdata"
accessModes:
- ReadWriteMany
resources:
requests:
storage: 10Gi通过kubectl部署volume
kubectl apply -f pvc.yaml5、创建service account
创建pod时，如果不指定服务账户，则会自动为其分配一个名为default的同一namespace中的服务账户。但是通常应用程序时存在权限不足的情况，所以需要我们自己创建一个服务账户。
①下载jenkins-sa.yaml
wget https://raw.githubusercontent.com/jenkins-infra/jenkins.io/master/content/doc/tutorials/kubernetes/installing-jenkins-on-kubernetes/jenkins-sa.yaml②通过kubectl部署jenkins-sa.yaml
kubectl apply -f jenkins-sa.yaml或者使用下面的文件
jenkins-sa.yaml
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: jenkins
namespace: jenkins
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: jenkins
rules:
- apiGroups:
- '*'
resources:
- statefulsets
- services
- replicationcontrollers
- replicasets
- podtemplates
- podsecuritypolicies
- pods
- pods/log
- pods/exec
- podpreset
- poddisruptionbudget
- persistentvolumes
- persistentvolumeclaims
- jobs
- endpoints
- deployments
- deployments/scale
- daemonsets
- cronjobs
- configmaps
- namespaces
- events
- secrets
verbs:
- create
- get
- watch
- delete
- list
- patch
- update
- apiGroups:
- ""
resources:
- nodes
verbs:
- get
- list
- watch
- update
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: jenkins
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: jenkins
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: Group
name: system:serviceaccounts:jenkins6、安装Jenkins
jenkins-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: jenkins
namespace: jenkins
spec:
replicas: 1
selector:
matchLabels:
app: jenkins
template:
metadata:
labels:
app: jenkins
spec:
serviceAccountName: jenkins #指定我们前面创建的服务账号
containers:
- name: jenkins
image: registry.cn-hangzhou.aliyuncs.com/s-ops/jenkins:2.346
ports:
- containerPort: 8080
- containerPort: 50000
volumeMounts:
- name: jenkins-home
mountPath: /var/jenkins_home
volumes:
- name: jenkins-home
persistentVolumeClaim:
claimName: jenkins-pvc #指定前面创建的PVC通过kubectl部署jenkins-deployment.yaml
kubectl create -f jenkins-deployment.yaml -n jenkins7、授权对Jenkins服务的访问权限
主要目的暴露外部访问Jenkins的8080端口，我将31400定义为8080的映射端口。
jenkins-service.yaml
apiVersion: v1
kind: Service
metadata:
name: jenkins
namespace: jenkins
spec:
type: NodePort
ports:
- name: http
port: 8080
targetPort: 8080
nodePort: 31400
- name: agent
port: 50000
targetPort: 50000
nodePort: 31401
selector:
app: jenkins通过kubectl部署服务
kubectl create -f jenkins-service.yaml -n jenkins8、打开浏览器IP:31400/
查看密码
kubectl get pod -n jenkins //查询podname
kubectl logs podname -n jenkins
*************************************************************
Jenkins initial setup is required. An admin user has been created and a password generated.
Please use the following password to proceed to installation:
cf8d9da9de0346fd90461be366915d76
This may also be found at: /var/jenkins_home/secrets/initialAdminPassword
*************************************************************选择推荐插件安装，创建管理员~完成！
到此这篇关于Kubernetes安装Jenkins的文章就介绍到这了,更多相关Kubernetes安装Jenkins内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
