GitHub Actions offers features that let you control deployments. 您可以:
- Trigger workflows with a variety of events.
- Configure environments to set rules before a job can proceed and to limit access to secrets.
- Use concurrency to control the number of deployments running at a time.
For more information about continuous deployment, see "About continuous deployment."
You should be familiar with the syntax for GitHub Actions. 更多信息请参阅“Learn GitHub Actions”。
You can use a variety of events to trigger your deployment workflow. Some of the most common are:
For example, a workflow with the following triggers runs whenever:
- There is a push to the
- A pull request targeting the
mainbranch is opened, synchronized, or reopened.
- Someone manually triggers it.
on: push: branches: - main pull_request: branches: - main workflow_dispatch:
Environments are used to describe a general deployment target like
development. When a GitHub Actions workflow deploys to an environment, the environment is displayed on the main page of the repository. You can use environments to require approval for a job to proceed, restrict which branches can trigger a workflow, or limit access to secrets. For more information about creating environments, see "Using environments for deployment."
Concurrency 确保只有使用相同并发组的单一作业或工作流程才会同时运行。 您可以使用并发，以便环境中每次最多有一个正在进行的部署和一个待处理的部署。
environment are not connected. The concurrency value can be any string; it does not need to be an environment name. Additionally, if another workflow uses the same environment but does not specify concurrency, that workflow will not be subject to any concurrency rules.
For example, when the following workflow runs, it will be paused with the status
pending if any job or workflow that uses the
production concurrency group is in progress. It will also cancel any job or workflow that uses the
production concurrency group and has the status
pending. This means that there will be a maximum of one running and one pending job or workflow in that uses the
production concurrency group.
name: Deployment concurrency: production on: push: branches: - main jobs: deployment: runs-on: ubuntu-latest environment: production steps: - name: deploy # ...deployment-specific steps
You can also specify concurrency at the job level. This will allow other jobs in the workflow to proceed even if the concurrent job is
name: Deployment on: push: branches: - main jobs: deployment: runs-on: ubuntu-latest environment: production concurrency: production steps: - name: deploy # ...deployment-specific steps
You can also use
cancel-in-progress to cancel any currently running job or workflow in the same concurrency group.
name: Deployment concurrency: group: production cancel-in-progress: true on: push: branches: - main jobs: deployment: runs-on: ubuntu-latest environment: production steps: - name: deploy # ...deployment-specific steps
When a GitHub Actions workflow deploys to an environment, the environment is displayed on the main page of the repository. For more information about viewing deployments to environments, see "Viewing deployment history."
每个工作流程运行都会生成一个实时图表，说明运行进度。 You can use this graph to monitor and debug deployments. For more information see, "Using the visualization graph."
You can also view the logs of each workflow run and the history of workflow runs. 更多信息请参阅“查看工作流程运行历史记录”。
You can also build an app that uses deployment and deployment status webhooks to track deployments. When a workflow job that references an environment runs, it creates a deployment object with the
environment property set to the name of your environment. As the workflow progresses, it also creates deployment status objects with the
environment property set to the name of your environment, the
environment_url property set to the URL for environment (if specified in the workflow), and the
state property set to the status of the job. For more information, see "Apps" and "Webhook events and payloads."
You can use a status badge to display the status of your deployment workflow. 状态徽章显示工作流程目前失败还是通过。 添加状态徽章的常见位置是仓库的
README.md 文件，但也可将其添加到您喜欢的任何网页。 默认情况下，徽章显示默认分支的状态。 您也可以在 URL 中使用
This article demonstrated features of GitHub Actions that you can add to your deployment workflows.
GitHub AE offers CD starter workflow for several popular services, such as Azure Web App. To learn how to get started using a starter workflow, see "Using starter workflows" or browse the full list of deployment starter workflows. You can also check out our more detailed guides for specific deployment workflows, such as "Deploying to Azure App Service."
Many service providers also offer actions on GitHub Marketplace for deploying to their service. For the full list, see GitHub Marketplace.