如何修复GitHub Actions Pull Request流水线找不到linux运行器的错误

错误原因 #

No runner matching the specified labels was found: linux

上述报错是因为你在runs-on字段填写了不存在的GitHub公共Runner标签linux，GitHub官方提供的公共Linux环境Runner没有使用linux作为标识，正确的Linux环境公共Runner标签为ubuntu-latest（也可指定固定版本如ubuntu-22.04、ubuntu-20.04）。

修复步骤 #

• 修改流水线配置中lint_and_test job下的runs-on字段值，将linux替换为ubuntu-latest
• 提交修改后的配置文件即可正常触发流水线

修正后的完整流水线配置如下：

# This is a basic workflow to help you get started with Actions
name: pipeline_action_on_pull_request
# Controls when the workflow will run
on:
  # Triggers the workflow on push or pull request events but only for the master branch
  pull_request:
    branches: 
      - dev
# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  lint_and_test:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest
    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v2
        with:
          node-version: '16'
      - run: npm install
      - run: npm lint
      - run: npm test

补充说明 #

如果你使用的是团队自建的自托管Runner，需要先确认对应Runner已经配置了linux标签，再使用该值；否则统一使用官方公共Runner的标准标签即可。

内容的提问来源于stack exchange，提问作者igaro4ak337