I am trying to zip a directory in a Jenkins pipeline, my code is similar to this
stages {
stage('ZIP') {
steps {
script {
currentBuild.displayName = "DISPLAY_NAME"
}
// Zip DIRECTORY
sh '''
cd ${WORKSPACE}
zip -r zip_file_name src_dir
'''
}
}
}
I get the following error
#tmp/durable-4423e1f6/script.sh: line 3: zip: command not found
However, when I create another job with execute as a shell option for the build, zip is working fine.
I have tried using zip pipeline utillity plugin, but when I try to access the zip file it is not found.
script {
currentBuild.displayName = "${VERSION}"
zip zipFile: '${zip_file_name}', dir: 'src_dir', overwrite: true
}
#raviTeja, I guess zip utility is missing in your jenkins agent machine. What is the OS flavour of your Jenkins agent? Lets say if you are using Linux flavours like Redhat, ubuntu.. first you need to install the zip utility in the agent machine. Then alone you can use the zip command in your script
If you are using RedHat flavour in the agent machine
First install zip utility
sudo dnf install zip
Then execute zip command in your pipeline script
zip -r zip_file_name src_dir
If you are using ubuntu/debian flavour for jenkins agent
Install zip utility using apt
sudo apt install zip
Execute zip command in your pipeline script
zip -r zip_file_name src_dir
Update:
If you are using Jenkins in the docker container, you can do something similar to the below.
I am guessing you are running ubuntu base image (identify the respective base image Linux flavour and execute the below commands)
Get into docker container using exec command
docker exec -it <container> /bin/bash
Update packages
apt-get -y update
Install zip
apt-get install zip -y
But remember if you delete this container, you are going to loose this set-up. You might have repeat all these steps
I'm trying to build a jekyll website via my Jenkins server (which runs inside a container) and I have a stage in my Jenkinsfile that looks like this:
stage('Building Website') {
agent {
docker {
image 'jekyll/jekyll:builder'
}
}
steps {
sh 'jekyll --version'
}
}
The very first time I run my job it pulls the jekyll docker image and runs fine (although it does fetch a bunch of gems before running jekyll which doesn't happen when I run the docker manually outside jenkins) but then the next jobs fail giving this error:
jekyll --version
/usr/jekyll/bin/jekyll: exec: line 15: /usr/local/bundle/bin/jekyll: not found
Any ideas what I'm doing wrong here?
As you can see in the jenkins log file, jenkins runs docker with the -u 1000:1000 argument, since this user does not exits in the jekyll/jekyll image, the command fails with the error .../bin/jekyll: not found
Here is a sample Jenkinsfile:
pipeline {
agent
{
docker
{
image 'jekyll/jekyll:3.8'
args '''
-u root:root
-v "${WORKSPACE}:/srv/jekyll"
'''
}
}
stages {
stage('Test') {
steps {
sh '''
cd /srv/jekyll
jekyll --version
'''
}
}
}
}
To add to the other answer, note the containerized Jenkins doesn't not contain the docker binary, so docker commands will still fail.
A few solutions
Make a dockerfile that inherits from the jenkins image and installs docker as well, creating a new image.
Manually install docker inside of the container. This will work until you pull a new image, and you'll have to do it over again.
Open an interactive terminal into the jenkins container
docker container exec -it -u root <container id> bash
Then install docker
curl https://get.docker.com/ > dockerinstall && chmod 777 dockerinstall && ./dockerinstall
Exit the container and set perms on docker.sock
sudo chmod 666 /var/run/docker.sock
Finished!
I am setting up a Jenkins pipeline (declarative script) using a Docker container agent built from a Dockerfile. I want one of the build stages to fetch dependent packages (Debian packages, from Artifactory, in my case) and then install them within the Docker container. Installing those packages (using dpkg, in my case) needs super-user permission, and thus sudo. How do I set up the pipeline and/or Dockerfile to enable that?
At present, my Jenkinsfile is somewhat like this:
pipeline {
agent {
dockerfile {
filename 'Dockerfile.jenkins'
}
}
stages {
stage('Set up dependencies') {
steps {
sh 'rm -rf dependent-packages && mkdir dependent-packages'
script {// Fetch packages from Artifactory
def packageserver = Artifactory.server 'deb-repo-srv'
def downloadSpec = ...
packageserver.download(downloadSpec)
}
sh 'sudo dpkg -i -R dependent-packages/'
}
}
...
}
}
And my Dockerfile is like this:
# Set up the O/S environment
FROM debian:9
# Add the build and test tools
RUN apt-get -y update && apt-get -y install \
cmake \
doxygen \
g++ \
libcppunit-dev \
make \
libxerces-c-dev
Because I am using a Dockerfile agent, simply adding the jenkins user to the sudoers file of the Jenkins server will not work.
I have an Jenkins Server running in an docker container and have access to docker an the host system, so far it is working well. Now I want to set up a pipeline testing an script inside an docker container.
Jenkinsfile:
pipeline {
agent { docker 'nginx:1.11' }
stages {
stage('build') {
steps {
sh 'nginx -t'
}
}
}
}
Error Message:
> + docker pull nginx:1.11
>
> Warning: failed to get default registry endpoint from daemon (Got
> permission denied while trying to connect to the Docker daemon socket
> at unix:///var/run/docker.sock: Get
> http://%2Fvar%2Frun%2Fdocker.sock/v1.29/info: dial unix
> /var/run/docker.sock: connect: permission denied). Using system
> default: https://index.docker.io/v1/
>
> Got permission denied while trying to connect to the Docker daemon
> socket at unix:///var/run/docker.sock: Post
> http://%2Fvar%2Frun%2Fdocker.sock/v1.29/images/create?fromImage=nginx&tag=1.11:
> dial unix /var/run/docker.sock: connect: permission denied
>
> script returned exit code 1
My problem is that jenkins needs to run the docker command with sudo, but how to say the agent running the command with sudo?
I have faced the same issue. After analysing the console log, I have found that the reason is that the Docker Jenkins Plugin starts a new container with a specific option -u 107:112:
...
docker run -t -d -u 107:112 ...
...
After trying many options such as: add jenkins to sudo group (it did not work because jenkins user does not exist in container), add USER root into Dockerfile, ... but none of them do the trick.
Finally I have found a solution that is using args in docker agent to overwrite the -u option. This is my Jenkinsfile:
pipeline {
agent {
docker {
image 'ubuntu'
args '-u root:sudo -v $HOME/workspace/myproject:/myproject'
}
}
stages {
stage("setup_env") {
steps {
sh 'apt-get update -y'
sh 'apt-get install -y git build-essential gcc cmake make'
}
}
stage("install_dependencies") {
steps {
sh 'apt-get install -y libxml2-dev'
}
}
stage("compile_dpi") {
steps {
sh 'cd /myproject && make clean && make -j4'
}
}
stage("install_dpi") {
steps {
sh 'cd /myproject && make install'
}
}
stage("test") {
steps {
sh 'do some test here'
}
}
}
post {
success {
echo 'Do something when it is successful'
bitbucketStatusNotify(buildState: 'SUCCESSFUL')
}
failure {
echo 'Do something when it is failed'
bitbucketStatusNotify(buildState: 'FAILED')
}
}
}
There's maybe a security issue here but it is not the problem in my case.
I'd solve the problem differently, matching the jenkins group id inside the container to that of the docker socket you've mounted a volume. I do this with an entrypoint that runs as root, looks up the gid of the socket, and if that doesn't match that of the gid inside the current container, it does a groupmod to correct it inside the container. Then I drop privileges to the jenkins user to launch Jenkins. This entrypoint run on every startup, but fairly transparently to the Jenkins app that is launched.
All the steps to perform this are included in this github repo: https://github.com/sudo-bmitch/jenkins-docker/
You can work around that by:
1- In your Dockerfile add jenkins to the sudoers file:
RUN echo "jenkins ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
2- Add an extra step in your Jenkinsfile to give jenkins the right permissions to use docker:
pipeline {
agent none
stages {
stage("Fix the permission issue") {
agent any
steps {
sh "sudo chown root:jenkins /run/docker.sock"
}
}
stage('Step 1') {
agent {
docker {
image 'nezarfadle/tools'
reuseNode true
}
}
steps {
sh "ls /"
}
}
}
}
As others have suggested, the issue is that jenkins does not have permission to run docker containers. Let's go over the ways you could launch jenkins first, and then see what could be done in each of these ways.
1. running jenkins manually
Surely you could download & run jenkins with java as suggested in here. In this method, you could do several things to allow your jenkins user to use docker:
a. give jenkins user root access:
I do not suggest this way, after all you are giving your pipelines access to everything! So you probably do not want this to happen.
b. add jenkins user to docker group
Like explained here you could manage docker as non-root user. just add your user to docker group and thats all. I recommend it if you know who is going to use docker (cause well, you are giving him root access in docker in a way).
c. make docker rootless
This is a new feature docker added to its arsenal recently. You could read in detail what it implies here. To tell you the truth I am not a fan of this feature! The reason is that you can not (at least I could not find a way) to make it work for a user in a container (as you need to stop docker service to make it happen), also I had some difficulties configing dns when using rootless mode. But it should be fine if you are not in a container.
2. running jenkins in docker
This method is more troublesome actually! I struggled with the ways I could use docker in jenkins container, but in the end got the results needed, so was worth the effort.
To run docker in jenkins (which is also a docker container itself) you have three ways:
1. use dind (docker in docker)
It is pretty straight forward, you run dind image & connect docker in jenkins container to the dind, without any special permission handling you can use docker at will.
2. use dood (docker outside of docker)
mount docker path as a volume in the docker run script for your jenkins, note that you need to use one of the two ways I explained above (in running jenkins manually) to be able to use docker, it could be a bit tricky but possible.
3. run agent as a docker in a different environment & connect remote agent in jenkins
At last it is possible to run the agent separately & connecting the remote agent in jenkins. Although this does not exactly answer your question, but is a way you could use.
These ways for just running a docker in jenkins, you will probably have some issues after you ran a docker as agent, like having permission issues in the agent container itself, which is most likely because of the agent's user (if you like, you could access the user with command
docker exec -it [agent container id] whoami
e.g. in this sample the user in agent is node
agent {
docker { image 'node:14-alpine' }
}
steps{
sh 'npm i -g random'
}
so it would throw an error because the node user does not have permission to install npm module globally (I know, it is weird!)
so as luongnv89 mentioned, you could change the user running the docker like this
agent {
docker { image 'node:14-alpine' args '-u root' }
}
Hope this was helpful understanding the whole picture. 😊
What worked for me was
node() {
String jenkinsUserId = sh(returnStdout: true, script: 'id -u jenkins').trim()
String dockerGroupId = sh(returnStdout: true, script: 'getent group docker | cut -d: -f3').trim()
String containerUserMapping = "-u $jenkinsUserId:$dockerGroupId "
docker.image('image')
.inside(containerUserMapping + ' -v /var/run/docker.sock:/var/run/docker.sock:ro') {
sh "..."
}
}
This way the user in the container still uses the jenkins user id + group id to avoid permissions conflicts with shared data but is also member of the docker group inside container which is required to access the docker socket (/var/run/docker.sock)
I prefer this solution as it doesn't require any additional scripts or dockerfiles
I just had the same exact issue. You need to add jenkins user to docker group:
DOCKER_SOCKET=/var/run/docker.sock
DOCKER_GROUP=docker
JENKINS_USER=jenkins
if [ -S ${DOCKER_SOCKET} ]; then
DOCKER_GID=$(stat -c '%g' ${DOCKER_SOCKET})
sudo groupadd -for -g ${DOCKER_GID} ${DOCKER_GROUP}
sudo usermod -aG ${DOCKER_GROUP} ${JENKINS_USER}
fi
# Start Jenkins service
sudo service jenkins restart
After you run the above, pipelines successfully start docker
I might have found a reasonably good solution for this.
Setup
I run Jenkins as a container and use it to build containers on the dockerhost it's running on. To do this, I pass /var/run/docker.sock as a volume to the container.
Just to reiterate the disclaimer some other people already stated: Giving access to the docker socket is essentially like giving root access to the machine - be careful!
I assume that you've already installed docker into your Jenkins Image.
Solution
This is based on the fact, that the docker binary is not in the first directory of $PATH. We basically place a shell script that runs sudo docker instead of just the plain docker command (and passes the parameters along).
Add a file like this to your jenkins repository and call it docker_sudo_overwrite.sh:
#! /bin/sh
# This basically is a workaround to add sudo to the docker command, because aliases don't seem to work
# To be honest, this is a horrible workaround that depends on the order in $PATH
# This file needs to be place in /usr/local/bin with execute permissions
sudo /usr/bin/docker $#
Then extend your Jenkins Dockerfile like this:
# Now we need to allow jenkins to run docker commands! (This is not elegant, but at least it's semi-portable...)
USER root
## allowing jenkins user to run docker without specifying a password
RUN echo "jenkins ALL=(ALL) NOPASSWD: /usr/bin/docker" >> /etc/sudoers
# Create our alias file that allows us to use docker as sudo without writing sudo
COPY docker_sudo_overwrite.sh /usr/local/bin/docker
RUN chmod +x /usr/local/bin/docker
# switch back to the jenkins-user
USER jenkins
This gives the jenkins service user the ability to run the docker binary as root with sudo (without providing a password). Then we copy our script to /usr/local/bin/docker which "overlays" the actual binary and runs it with sudo. If it helps, you can look at my example on Github.
Same issue here where.
[...]
agent { docker 'whatever_I_try_doesnt_work'} # sudo, jenkins user in dockerroot group etc
[...]
So my workaround is to add it as one of the steps in the the build stage of the pipeline as follow:
pipeline {
agent any
stages {
stage('Build') {
steps {
sh 'sudo docker pull python:3.5.1'
}
}
}
}
How can i create a docker image of the artifacts using docker instruction. I am using "Build Inside a docker container" in jenkins job.
This is the instruction in the dockerfile:
install openjdk 8`RUN apt-get update && \
apt-get install -y openjdk-8-jdk && \
apt-get install -y ant && \
apt-get clean;`
Then I need to control back to Jenkins job to perform the Build process.
So in Build process in jenkins Job, "Execute Shell" commands are executed and artifacts are created.
It has some post build action to run the junit test cases and run coverage report.
In the end, I need the dockerfile to run the instruction to create image of the artifacts.
Add sourcefile destinationfile
Please suggest how to write docker instruction to give the control to jenkins job and get the control after build process is done.
You can use docker pipeline plugin to do this (see docker object)
node("docker") {
docker.withRegistry('<<your-docker-registry>>', '<<your-docker-registry-credentials-id>>') {
git url: "<<your-git-repo-url>>", credentialsId: '<<your-git-credentials-id>>'
sh "git rev-parse HEAD > .git/commit-id"
def commit_id = readFile('.git/commit-id').trim()
println commit_id
def app;
stage("build") {
app = docker.build "your-project-name"
}
stage("publish") {
app.push 'master'
app.push "${commit_id}"
}
}
}