如何根据 Jenkins 声明性管道中的参数使用不同的私有 docker 代理? [英] How can I use different private docker agents based on parameter in Jenkins declarative pipeline?

问题描述

I am trying to choose a different docker agent from a private container registry based on an a parameter in Jenkins pipeline. For my example let's say I have 'credsProd' and 'credsTest' saved in the credentials store. My attempt is as follows:

pipeline {
    parameters {
        choice(
            name: 'registrySelection', 
            choices: ['TEST', 'PROD'],
            description: 'Is this a deployment to STAGING or PRODUCTION environment?'
        )
    }
    environment {
        URL_VAR = "${env.registrySelection == "PROD" ? "urlProd.azure.io" : "urlTest.azure.io"}"
        CREDS_VAR = "${env.registrySelection == "PROD" ? "credsProd" : "credsTest"}"
    }
    agent {
        docker {
            image "${env.URL_VAR}/image:tag"
            registryUrl "https://${env.URL_VAR}"
            registryCredentialsId "${env.CREDS_VAR}"
        }
    }
  stages{
      stage('test'){
          steps{
            echo "${env.URL_VAR}"
            echo "${env.CREDS_VAR}"
          }
      }
  }
}

I get error: Error response from daemon: Get https://null/v2/: dial tcp: lookup null on

If I hard code the registryUrl I get a similar issue with registryCredentialsId:

agent {
    docker {
        image "${env.URL_VAR}/image:tag"
        registryUrl "https://urlTest.azure.io"
        registryCredentialsId "${env.CREDS_VAR}"
    }
}

ERROR: Could not find credentials matching null

It is successful if I hardcode both registryUrl and registryCredentialsId.

agent {
    docker {
        image "${env.URL_VAR}/image:tag"
        registryUrl "https://urlTest.azure.io"
        registryCredentialsId "credsTest"
    }
}

It appears that the docker login stage of the agent{docker{}} cannot access/resolve environment variables.

Is there a way around this that does not involve code duplication? I manage changes with multi branch pipeline so ideally do not want to have separate Prod and test groovy files or different sets sequential steps in the same file.

解决方案

Try running a scripted pipeline before declarative:

URL_VAR = null
CREDS_VAR = null

node('master') {
    stage('Choose') {
        URL_VAR = params.registrySelection == "PROD" ? "urlProd.azure.io" : "urlTest.azure.io"
        CREDS_VAR = params.registrySelection == "PROD" ? "credsProd" : "credsTest"
    }
}


pipeline {
    agent {
        docker {
            image "${URL_VAR}/image:tag"
            registryUrl "https://${URL_VAR}"
            registryCredentialsId "${CREDS_VAR}"
        }
    }
...

Alternatively, you can define two stages (with hard-coded url and creds) but run only one of them, using when in both.

这篇关于如何根据 Jenkins 声明性管道中的参数使用不同的私有 docker 代理?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！