I want to trigger multi-branch pipeline for every push, can anyone please let me know can how can we configure web-hooks in gitlab for multi-branch pipeline.
If you were wondering where the trigger setting is in Multibranch pipeline job settings, this will answers it:
Unlike other job types, there is no 'Trigger' setting required for a Multibranch job configuration; just create a webhook in GitLab for push requests which points to the project's webhook URL.
Source: https://github.com/jenkinsci/gitlab-plugin#webhook-url
You can also provide Gitlab triggers within the Jenkinsfile. You can see examples within the link provided above. This is how I got it work:
pipeline {
agent {
node {
...
}
}
options {
gitLabConnection('GitLab')
}
triggers {
gitlab(
triggerOnPush: true,
triggerOnMergeRequest: true,
branchFilterType: 'All',
addVoteOnMergeRequest: true)
}
stages {
...
}
}
Then in your Gitlab Project go to Settings -> Integrations and type in the Jenkins Job project url in 'URL'. URL should take either form:
http://JENKINS_URL/project/PROJECT_NAME
http://JENKINS_URL/project/FOLDER/PROJECT_NAME
Notice that the url does not contain "job" within it and instead uses "project".
Make sure under Triggers, you have "Push Events" checked as well if you want the job to trigger whenever someone pushes a commit.
Finally, run a build against your Jenkinsfile first before testing the webhook so Jenkins will pick-up the trigger settings for Gitlab.
Related
I have a Jenkinsfile setup for our CI/CD pipeline, and it runs through the pipeline on git actions like Pull Requests, Branch Creation, Tag Pushes, etc..
Prior to this setup, I was used to setting up Jenkins build jobs in the Jenkins UI. The advantage of this, was that I could setup dedicated build jobs that I could trigger remotely, and independently of git webhook actions. I could do a POST to the job endpoint with parameters to trigger various actions.
Documentation for this process would be referenced here - see "Trigger Builds Remotely"
I could also hit the big button that says "Build", or "Build with Parameters" in the UI, which was super nice.
How would one do this with a Jenkinsfile? Is this even possible to define build jobs in a pipeline definition within a Jenkinsfile? I.E. define functions / build jobs that have dedicated URLs that could be called on the Jenkins URL independent of webhook callbacks?
What's the best practice here?
Thanks for any tips, references, suggestions!
I would recommend starting with Multibranch pipelines. In general you get all the things you mentioned, but a little better. Because thhe paramteres can be defined within your Jenkinsfile. In short just do it like this:
Create a Jenkinsfile an check this into a Git Repository.
To create a Multibranch Pipeline: Click New Item on Jenkins home page.
Enter a name for your Pipeline, select Multibranch Pipeline and click OK.
Add a Branch Source (for example, Git) and enter the location of the repository.
Save the Multibranch Pipeline project.
A declarative Jenkinsfile can look like this:
pipeline {
agent any
parameters {
string(name: 'Greeting', defaultValue: 'Hello', description: 'How should I greet the world?')
}
stages {
stage('Example') {
steps {
echo "${params.Greeting} World!"
}
}
}
}
A good tutorial with screenshhots can be found here: https://www.jenkins.io/doc/book/pipeline/multibranch/
I have created a jenkins parameterized pipeline script as below. I have stored it on my Github repository.
properties([parameters([string(defaultValue: 'Devasish', description: 'Enter your name', name: 'Name'),
choice(choices: ['QA', 'Dev', 'UAT', 'PROD'], description: 'Where you want to deploy?', name: 'Environnment')])])
pipeline {
agent any
stages {
stage('one') {
steps {
echo "Hello ${Name} Your code is Building in ${Environnment} "
}
}
stage('Two') {
steps {
echo "Hello ${Name} hard testing in ${Environnment}"
}
}
stage('Three') {
steps {
echo "Hello1 ${Name} deploying in ${Environnment}"
}
}
}
}
Then, I have created a jenkins job by choosing pipeline option. While creating jenkins pipeline Under build triggers section, I have checked GitHub hook trigger for GITScm polling checkbox and Under Pipeline section, I have chosen Pipeline script from SCM followed by choosing Git in SCM, providing Repository URL where the above written JenkinsFile script is stored.
Then, Under Github repository settings, I have gone to webhooks and added one webhook where I specified my Payload URL as myJenkinsServerURL/github-webhook/. which will enable a functionality like whenever there will be any push event occurred within the repository, it will run the jenkins pipeline I created above.
Now, the situation is, when I am running this jenkins job from Classic UI by clicking Build with parameters, I am getting a text box to fill my name and a dropdown having list of 4 options ('QA', 'Dev', 'UAT', 'PROD') I gave above in script to choose, in which server I want to deploy my code, then it gets run.
But when I am committing in Github, it starts jenkins pipeline but not asking for parameters value instead just taking default value Devasish in name and QA in server.
What should I do to get an option of filling these details but not from Classic UI.
Thanks in advance.
As you have noted, when you trigger your pipeline manually, it will ask for the Build Parameters and let you specify values before proceeding.
However, when triggering the pipeline thru automatic triggers (e.g. SCM triggers/webhooks), then it is assumed to be an unattended build and it will use the defaultValue settings from your Jenkinsfile build parameters" definition.
I'm working on building a Jenkins job that will trigger a pipeline to build a new AMI in one group, when a Golden AMI in another group becomes available. I need a way for a Jenkins job to initiate another Jenkins job without using the remote build URL method, because in the environment I'm working in it's not feasible to keep them all updated.
I've seen some things about plug-ins, but I'm a little fuzzy about which should be used here. Is there one that's recommended? Or is there a way to script this without the remote URL?
You can use build job to start an existing pipeline in Jenkins.
It's part of the Build Step plugin.
A simple example:
pipeline {
agent {
node { label 'nuc3' }
}
stages {
stage('Run External Jobs') {
steps {
build job: 'FOLDER_TEST_JOBS/test_job1_located_under_folder', wait: false
sleep(60)
build job: 'test_job_without_folder_path', wait: false
}
}
}
}
Preconditions: Add a webhook in my repository:
http://JenkinsURL:Port/multibranch-webhook-trigger/invoke?token=myToken
Go to Build Configuration -> Scan Multibranch Pipeline Trigger, Tick "Scan by webhook" and add "myToken" for "Trigger token"
Push from repository -> build triggered -> work as expected
Untick "Scan by webhook" from Build Configuration
Add a trigger block like below
triggers {
GenericTrigger(
genericVariables:[
//some variables
],
token: 'myToken',
//some configurations
)
}
stages{
// ...
}
Push from repository -> not build -> not expected behavior, seems token not work here
I wonder what the difference of these 2 tokens and how I should use token in jenkinsfile
I get the explations, see my answer below. If any one knows how we can use Multibranch webhook in triggers
I got the point:
There're 2 webhook plugins:
Generic Webhook Trigger Plugin, receives any HTTP request as JENKINS_URL/generic-webhook-trigger/invoke?token=GenericToken. It can be used in Build Trigger in Freestyle project, Pipeline or other project... It also can be added in triggers block in jenkinsfile.
Multibranch Scan Webhook Trigger, receives any HTTP request as JENKINS_URL/multibranch-webhook-trigger/invoke?token=MultibranchToken and can be configured in Build Configuration in Multibranch Pipeline.
I don't know if we can use Multibranch Scan Webhook Trigger in jenkinsfile.
Back to my question, I use Generic Webhook Trigger in triggers block, but send Multibranch webhook trigger from HTTP request. That's why it doesn't work.
How can I configure my Jenkins Pipeline project to provide the CHANGE_* variables related to a Bitbucket Server commit? The project's Pipeline definition is Pipeline script from SCM (Bitbucket Server Integration).
I have checked Bitbucket Server trigger build after push made available from the Bitbucket Server Integration Jenkins plugin and the build does get triggered, but the variables related to the commit/change message, author, author email, etc. are all missing.
pipeline {
agent any
stages {
stage("Hello variables") {
steps {
sh 'printenv'
}
}
}
}
The only Bitbucket related env variables are GIT_BRANCH, GIT_COMMIT, and GIT_URL.
The Bitbucket webhook (trigger) plugin does not provide a json payload.
If you want to get Bitbucket trigger json payload (and query it inside the the pipeline) you'll need to use the Generic Webhook Trigger