Best practices working with self-hosted GitHub Action runners at scale on AWS
DevOps & Developer Productivity Blog
This article provides best practices for working with self-hosted GitHub Action runners at scale on AWS.
Specifically, the article covers:
- Understanding security responsibilities when integrating GitHub and AWS environments
- Using short-lived AWS credentials via OIDC and IAM roles for least privilege access
- Using ephemeral runners for build isolation and auto-scaling
- Isolating runners using runner groups and separate AWS accounts
- Optimizing runner startup time with EC2 warm pools
- Using optimized AMIs for consistent and faster runner launches
- Reducing costs with Spot instances
- Recording runner metrics and logs in Amazon CloudWatch for observability
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