jenkins与k8s的对接有多种方法：
jenkins与k8s的插件对接说明
使用clouds插件对接
在jenkins执行构建时，k8s上会运行一个jnlp节点，本质上是一种jenkins主从架构的slave节点
jnlp节点通过调用k8s的API，在k8s中创建资源
这种方法比较复杂，因为很多时候jnlp镜像都是需要自己装docker、maven和jdk环境的，还要调整jenkins的设置
jenkins与k8s的脚本对接说明
在k8s的master节点上创建jenkins的工作目录，将其作为jenkins-slave使用，写入脚本创建资源
流程说明：
添加jenkins-slave→git checkout→maven→docker build and push→k8s拉取images→创建资源文件→创建资源
pipeline脚本
我这里的环境和上一篇《jenkins构建pipeline项目到docker》一致，代码同样是用的hellowolrd的一个项目
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| node ("k8s-master") {
stage('git checkout') {
git branch: 'main', credentialsId: '3ecfd94e-fbba-458e-b3f6-4a65f5762751', url: 'http://gitlab.wangsheng.com/group01/java_discuz.git'
}
stage('maven build') {
sh '''export JAVA_HOME=/usr/java/jdk-11
/usr/local/maven/bin/mvn clean package -Dmaven.test.skip=true'''
}
stage('build and push images') {
sh '''docker pull 192.168.10.130/jenkins-demo/tomcat8:v1
cat > Dockerfile << EOF
FROM 192.168.10.130/jenkins-demo/tomcat8:v1
RUN rm -rf /usr/local/tomcat8/webapps/* && mkdir /usr/local/tomcat8/webapps/ROOT
ADD webapp/target/webapp.war /usr/local/tomcat8/webapps/hello-world.war
EOF
docker build -t 192.168.10.130/jenkins-demo/tomcat8-demo:latest .
docker push 192.168.10.130/jenkins-demo/tomcat8-demo:latest
'''
}
stage('镜像测试') {
sh '''docker rm -f jenkins-test | true'''
sh '''docker run -itd -p 8081:8080 --name jenkins-test 192.168.10.130/jenkins-demo/tomcat8-demo:latest /bin/bash'''
sh '''docker ps | grep -i -w -q jenkins-test && echo "deploy successfully"'''
sh '''docker rm -f jenkins-test'''
}
stage('传送镜像') {
sh '''docker save -o tomcat.tar.gz 192.168.10.130/jenkins-demo/tomcat8-demo:latest
scp tomcat.tar.gz ws-k8s-node1:/root/
ssh ws-k8s-node1 "ctr -n=k8s.io image import tomcat.tar.gz"'''
}
stage('dp资源文件') {
sh '''cat > deployment.yaml<<EOF
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: tomcat-dp
namespace: default
labels:
app: tomcat
spec:
replicas: 1
selector:
matchLabels:
app: test
template:
metadata:
name: tomcat-test
labels:
app: test
spec:
nodeName: ws-k8s-node1
containers:
- name: tomcat-dp1
image: 192.168.10.130/jenkins-demo/tomcat8-demo:latest
imagePullPolicy: IfNotPresent
---
apiVersion: v1
kind: Service
metadata:
name: tomcat-service
spec:
type: NodePort
ports:
- port: 80
protocol: TCP
targetPort: 8080
nodePort: 30080
selector:
app: test
EOF
'''
sh '''kubectl delete deployments.apps tomcat-dp| true'''
sh '''kubectl apply -f deployment.yaml && echo "deploy sucessful" '''
}
stage('页面测试') {
sh '''HTTP_CODE=$(curl -o /dev/null -s -w "%{http_code}\n" 192.168.10.131:30080/hello-world)
if [[ $HTTP_CODE =~ ^(200|301|302)$ ]];then
echo "operational testing sucessfully"
else echo "operational testing failed"
fi '''
}
}
|
