- The [Kubernetes Agent Server](../../administration/clusters/kas.md) is [available on GitLab.com](../clusters/agent/index.md#set-up-the-kubernetes-agent-server)
at `wss://kas.gitlab.com`. **(PREMIUM)**
-[Agent-based access from GitLab CI/CD](../clusters/agent/ci_cd_tunnel.md).
## Runbooks in GitLab
Runbooks are a collection of documented procedures that explain how to carry out a task,
such as starting, stopping, debugging, or troubleshooting a system.
Read more about [how executable runbooks work in GitLab](../project/clusters/runbooks/index.md).