如何将变量从管道传递到 Jenkins 中的作业？

Question

I need to create a unique identifier in a pipeline and then all jobs started from this pipeline should have access to this unique identifier.
I do not want to parameterize those jobs.

I thought that environment variable defined on a pipeline level will be accessible from jobs, but it isn't.

pipeline {
   agent any
   environment {
       TEST_VAR = 'TEST_VAR'
   }
   stages {
      stage('Stage1') {
         steps {
            build (job: 'job1')
         }
      }
   }
}

Answer 1

You do not really need to parameterize the downstream pipelines but can still pass the variable as a parameter from the upstream and access it in the downstream.

Upstream pipeline

pipeline {
    agent any
    environment {
       TEST_VAR = 'hello_world'
    }
    stages {
        stage('Build-downstream-job') {
            steps {
                build job: 'downstream-job', parameters: [string(name: 'TEST_VAR', value: env.TEST_VAR)], wait: false
            }
        }
    }
}

Downstream pipeline

pipeline {
    agent any
    stages {
        stage('Get-test-var') {
            steps {
                println(params.TEST_VAR)
            }
        }
    }
}

Downstream pipeline console output

[Pipeline] stage
[Pipeline] { (Get-test-var)
[Pipeline] echo
hello_world
[Pipeline] }
[Pipeline] // stage

Answer 2

You should try adding a '$' before TEST_VAR:

environment {
     TEST_VAR = '$TEST_VAR'
}