How to view or get the service connection id in Azure DevOps

Question

Is there a way to view or get the service connection ids for the service connections that I create in Azure DevOps?

I need them in yaml pipelines that I create. For example, dockerRegistryServiceConnection that you see in the following is used in the docker@02 task for setting containerRegistry, if you see below.

variables:
- name: vmImageName
  value: ubuntu-latest

  # Container registry service connection established during pipeline creation
- name: dockerRegistryServiceConnection
  value: 'd072f8f7-fag1-asdf-467e-7fd5jfr5gjh6'  # This is not a true id
- name: imageRepository
  value: 'globoticket.services.discount'
- name: containerRegistry
  value: 'reacrtrialsregistry.azurecr.io'
- name: dockerfileFolderPath
  value: 'src/Services/GloboTicket.Services.Discount'
- name: tag
  value: '$(Build.BuildId)'


name: $(date:yyyyMMdd)$(rev:.r)

stages:

  - stage: Build
    jobs:
      - job: buildWebApp
        displayName: Build Release pipeline for Discount Service on Master branch
        pool:
          vmImage: $(vmImageName)

        steps:

        - checkout: self

        - task: Docker@2
          displayName: Build the image 
          inputs:
            command: build
            repository: $(imageRepository)
            dockerfile: $(dockerfileFolderPath)/Dockerfile
            buildContext: .
            tags: |
              $(tag)  
        
        - script: |
            sudo docker tag $(imageRepository):$(tag) $(containerRegistry)/$(imageRepository):$(tag)
          displayName: 'Tag container image before push'

        - task: Docker@2
          displayName: Push an tagged image to container registry
          inputs:
            command: push
            repository: $(imageRepository)
            dockerfile: $(dockerfileFolderPath)/Dockerfile
            buildContext: . 
            containerRegistry: $(dockerRegistryServiceConnection)
            tags: |
              $(tag)      

  - stage: DeployToDev
    displayName: Deploy to Dev Env
    jobs:
      - deployment:
      
        pool:
          vmImage: ubuntu-latest
        environment: Dev
        strategy: 
         runOnce:
           deploy:
             steps:
              - script: |
                    echo Any deploy stage starts here.
                displayName: 'Command Line Script to write out some messages'

                  

Answer 1

The input for the containerRegistry input for the docker task is the name of the service connection, not the id, according to docs:

Container registry (Optional): Name of the Docker registry service connection

If you still need the ID, you can click the service connection in the list under Project Settings -> Service Connections and fetch the service connection ID from the resourceId parameter in the url:

Answer 2

All Azure Tasks I know are using the service connection name, not the Id. The same is true for the Docker@2 Task:

Source.