一、Pipeline语句
Jenkinsfile (Declarative Pipeline)
pipeline {
agent {docker 'maven:3-alpine'}
stages {
stage('Example Build') {
steps {
sh 'mvn -v'
}
}
}
}二、Pipeline执行结果
Running in Durability level: MAX_SURVIVABILITY
[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in /var/lib/jenkins/workspace/pipeline-docker-job
[Pipeline] {
[Pipeline] sh
+ docker inspect -f . maven:3-alpine
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.40/containers/maven:3-alpine/json: dial unix /var/run/docker.sock: connect: permission denied
[Pipeline] sh
+ docker pull maven:3-alpine
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.40/images/create?fromImage=maven&tag=3-alpine: dial unix /var/run/docker.sock: connect: permission denied
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
ERROR: script returned exit code 1
Finished: FAILURE三、解决方法
出现“Got permission denied”报错，主要是权限问题，jenkins pipeline是在master上执行的，Jenkins是由jenkins用户启动的，但是jenkins用户没有执行docker的权限，所以导致以上报错，所以我们的解决方法如下：
# usermod -a -G docker jenkins # systemctl restart jenkins
仅仅将jenkins用户加入docker组还不够，必须要重启Jenkins才可以生效！