how to run jobs sequentially in github actions

This article discusses how to run jobs sequentially in GitHub Actions. It compares the two available methods for sequential execution: dependencies and workflow commands. The article also provides guidance on the best way to ensure jobs run in a spec

How to run jobs sequentially in github actions?

Parallel Jobs are executed concurrently. If you need to run jobs sequentially, you can use:

• Dependencies: This is the simplest way to run jobs sequentially. You can specify that a job depends on the successful completion of another job. This will ensure that the dependent job will not run until the prerequisite job has finished.

  <code class="yaml">jobs:
  job1:
    runs-on: ubuntu-latest
    steps:
      - run: echo "This is job 1"
  job2:
    runs-on: ubuntu-latest
    needs: job1
    steps:
      - run: echo "This is job 2"</code>

• Workflow Commands: You can also use workflow commands to control the execution of jobs. The needs command is used to specify dependencies between jobs. The continue-on-error command can be used to allow subsequent jobs to run even if a previous job fails.

  <code class="yaml">jobs:
  job1:
    runs-on: ubuntu-latest
    steps:
      - run: echo "This is job 1"
  
  job2:
    runs-on: ubuntu-latest
    needs: job1
    steps:
      - run: echo "This is job 2"
      - continue-on-error: true
      - run: echo "This job will run even if job 1 fails"</code>

What is the best way to ensure jobs run in a specific order in github actions?

The best way to ensure jobs run in a specific order is to use needs and continue-on-error commands. This will allow you to specify the dependencies between jobs and ensure that subsequent jobs will only run if the previous job has completed successfully.

Are there any limitations or considerations when running jobs sequentially in github actions?

There are a few limitations and considerations to keep in mind when running jobs sequentially in github actions:

• Concurrency: Sequential jobs will not run concurrently. This can lead to longer build times if you have a large number of jobs.
• Resource consumption: Sequential jobs will consume more resources than parallel jobs. This can be a problem if you have limited resources available.
• Error handling: If a sequential job fails, subsequent jobs will not run. You can use the continue-on-error command to allow subsequent jobs to run even if a previous job fails, but this can lead to unexpected results.

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