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Diffstat (limited to 'doc/user/clusters/agent/index.md')
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diff --git a/doc/user/clusters/agent/index.md b/doc/user/clusters/agent/index.md index a0d6e0d415d..140ac060dc7 100644 --- a/doc/user/clusters/agent/index.md +++ b/doc/user/clusters/agent/index.md @@ -63,9 +63,9 @@ GitLab in a Kubernetes cluster, you might need a different version of Kubernetes You can upgrade your Kubernetes version to a supported version at any time: +- 1.27 (support ends on July 22, 2024 or when 1.30 becomes supported) - 1.26 (support ends on March 22, 2024 or when 1.29 becomes supported) - 1.25 (support ends on October 22, 2023 or when 1.28 becomes supported) -- 1.24 (support ends on July 22, 2023 or when 1.27 becomes supported) GitLab aims to support a new minor Kubernetes version three months after its initial release. GitLab supports at least three production-ready Kubernetes minor versions at any given time. @@ -80,6 +80,18 @@ Some GitLab features might work on versions not listed here. [This epic](https:/ Read about how to [migrate to the agent for Kubernetes](../../infrastructure/clusters/migrate_to_gitlab_agent.md) from the certificate-based integration. +## Agent connection + +The agent opens a bidirectional channel to KAS for communication. +This channel is used for all communication between the agent and KAS: + +- Each agent can maintain up to 500 logical gRPC streams, including active and idle streams. +- The number of TCP connections used by the gRPC streams is determined by gRPC itself. +- Each connection has a maximum lifetime of two hours, with a one-hour grace period. + - A proxy in front of KAS might influence the maximum lifetime of connections. On GitLab.com, this is [two hours](https://gitlab.com/gitlab-cookbooks/gitlab-haproxy/-/blob/68df3484087f0af368d074215e17056d8ab69f1c/attributes/default.rb#L217). The grace period is 50% of the maximum lifetime. + +For detailed information about channel routing, see [Routing KAS requests in the agent](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/kas_request_routing.md). + ## Related topics - [GitOps workflow](gitops.md) |