I don't have access to Global Jenkins Configuration ,
because is a shared pipeline and would like to ask you if you know a way to define an agent (Virtual machine in Azure in this case)
directly in the Jenkins Declarative or scripted pipeline
Related
I have a jenkins pipeline which is getting called from AWS lambda. The User who triggered pipeline does not have access to execute plugin which is in jenkinsfile.
Is there a way to use different jenkins token in jenkins stage or while calling the plugin something like withcredetials.
I am setting up a Jenkins locally without SCM.
I have several Pipelines with the same JenkinsFile but with different parameters.
I would like to centralize the JenkinsFile for all the pipelines.
I found a solution originally for a scripted pipeline:
node {
load "/path/to/local/jenkinsFile.groovy"
}
The problem here is that Jenkins needs two agents to run the previous pipeline (one for the loading node, the other to run the pipeline) and both of them won't finish before the end of the pipeline.
Since I have multiples pipelines cron triggered, at some point, all the agents are busy to load the pipeline files, but since there is no more available agent to run each pipeline, the Jenkins process is stuck and then there is a bottleneck in the job queue.
For solutions I imagine:
How can I release the agent after the load of the pipeline?
Is there a way at the first pipeline (load the jenkinsFile) to keep an agent for running the pipeline?
I have tried every permutation that I can find to pull a pre-existing variable from a specific Jenkins Slave and I cannot find a solution.
We have a git branch variable defined on each slave agent as a default branch for all builds initiated on that slave. This is to ensure that all DSL scripted job config is tested on our dev machine before it is promoted to a higher jenkins environment.
I have created a pipeline that will build all the components needed to stand up a new jenkins (with all of our enterprise deployment pipelines created) and it needs access to that one specific variable to correctly build the jobs based on the jenkins master/slave combo that it is running on.
I need a way (in a jenkinsfile) to access the variables that are configured on a particular jenkins slave machine.
I am having Jenkins in one server and my build server is different. How to point build server in Jenkins pipeline so that my application will build in build server
Using grade and java.
Do we need to use node('Build 1') inside stage?
Suggest me some sample code please.
In Jenkins, your build server called slave machine or Jenkins nodes, which you need
Firstly add this "buildserver" into Jenkins nodes in advance, then you will get node name (or label them like ubuntu-buildserver), see one jenkins distributed build blog
Secondly in scripted pipeline you specify/reference this name in node
node("ubuntu-buildserver")
If you use declarative pipeline, check syntax#agent part.
It is similar for other global configuration like credentialsId, you need define those parameters in jenkins and refer to use them in your pipeline script.
What is the difference between an agent and a node in a jenkins pipeline?
I've found those definitions:
Node: A Pipeline performs most of the work in the context of one or more declared node steps.
Agent: The agent directive specifies where the entire Pipeline, or a specific stage, will execute in the Jenkins environment depending on where the agent directive is placed.
So both are used for executing pipeline steps. But when to use which one?
The simple answer is, Agent is for declarative pipelines and node is for scripted pipelines.
In declarative pipelines the agent directive is used for specifying which agent/slave the job/task is to be executed on. This directive only allows you to specify where the task is to be executed, which agent, slave, label or docker image.
On the other hand, in scripted pipelines the node step can be used for executing a script/step on a specific agent, label, slave. The node step optionally takes the agent or label name and then a closure with code that is to be executed on that node.
declarative and scripted pipelines (edit based on the comment):
declarative pipelines is a new extension of the pipeline DSL (it is basically a pipeline script with only one step, a pipeline step with arguments (called directives), these directives should follow a specific syntax. The point of this new format is that it is more strict and therefore should be easier for those new to pipelines, allow for graphical editing and much more.
scripted pipelines is the fallback for advanced requirements.