How to write Pipeline to discard old builds?

Question

The groovy syntax generator is NOT working for sample step properties: Set Job Properties. I\'ve selected Discard old builds and then entered

Answer 1

As for declarative syntax, you can use the options block:

pipeline {
  options {
    buildDiscarder(logRotator(numToKeepStr: '30', artifactNumToKeepStr: '30'))
  }
  ...
}

Parameters for logRotator (from the source code):

• daysToKeepStr: history is only kept up to this days.
• numToKeepStr: only this number of build logs are kept.
• artifactDaysToKeepStr: artifacts are only kept up to this days.
• artifactNumToKeepStr: only this number of builds have their artifacts kept.

More information can be found in Cloudbees knowledge base and in the docs for options block.

Answer 2

For Scripted Pipelines use:

properties([
    buildDiscarder(logRotator(daysToKeepStr: '3', numToKeepStr: '3')),
])

Answer 3

For declarative pipeline you can add this:

options {

    buildDiscarder(
        logRotator(
            // number of build logs to keep
            numToKeepStr:'5',
            // history to keep in days
            daysToKeepStr: '15',
            // artifacts are kept for days
            artifactDaysToKeepStr: '15',
            // number of builds have their artifacts kept
            artifactNumToKeepStr: '5'
        )
    )
}