docs: support ca rotation with Omni#354
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talos-bot merged 1 commit intosiderolabs:mainfrom Mar 17, 2026
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This needs to be merged after Omni 1.6 is released. |
utkuozdemir
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Feb 9, 2026
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| `omnictl` needs to be able to reach your Omni instance, Image Factory (Omni uses the default [Image Factory](https://factory.talos.dev/) if not configured otherwise) and Talos nodes over the network. | ||
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| Also, your Omni instance needs to be able to reach the Talos nodes over the network. If your nodes are behind a firewall, in a private network, or otherwise not directly reachable, you would need to configure a load balancer to forward TCP port 50000 to reach the nodes for Talos API access. |
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Omni instance doesn't need to reach Talos nodes directly. It reaches them over SideroLink. Talos nodes need to be able to initiate the connection though.
Iheanacho-ai
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Feb 9, 2026
| Run the following command to rotate the Talos API CA: | ||
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| ```shell | ||
| $ omnictl cluster -n <cluster-name> secret rotate talos-ca |
| Talos sets up root certificate authorities with the lifetime of 10 years, and all Talos and Kubernetes API certificates are issued by these root CAs. | ||
| So the rotation of the root CA is only needed if: | ||
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| - you want to revoke access to the cluster for a leaked break-glass `kubeconfig` or `talosconfig`; |
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Start each list with Capital letters
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| There are some details which make Talos and Kubernetes API root CA rotation a bit different, but the general flow is the same: | ||
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| - generate new CA certificate and key; |
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Start each list with capital letters
| At the end of the flow, old CA is completely removed from the cluster, so all certificates issued by it will be considered invalid. | ||
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| Omni internally handles all these steps in three stages: | ||
| - PRE-ROTATE: Add a new CA certificate as 'accepted', |
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embolden this PRE-ROTATE, same goes with ROTATE and POST-ROTATE
| Run the following command to rotate the Kubernetes API CA: | ||
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| ```shell | ||
| $ omnictl cluster -n <cluster-name> secret rotate kubernetes-ca |
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remove the shell command here
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Pull request overview
Adds documentation for rotating Talos and Kubernetes API root CAs via omnictl, and links that guidance from the Talos cluster import flow so users can remove the post-import “tainted” state.
Changes:
- Add a new “CA Rotation” doc covering Talos API and Kubernetes API CA rotation workflows and status checks.
- Add “Next steps” guidance to the Talos import doc pointing users to CA rotation to remove
tainted-by-importing. - Register the new doc in the docs navigation (
public/docs.json,omni.yaml).
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| public/omni/cluster-management/importing-talos-clusters.mdx | Adds “Next steps” directing imported-cluster users to CA rotation to remove the import taint label. |
| public/omni/cluster-management/ca-rotation.mdx | New documentation page describing CA rotation flows and relevant omnictl commands. |
| public/docs.json | Adds the new CA rotation page to the Cluster Management docs section. |
| omni.yaml | Adds CA rotation to the Omni “Cluster Management” navigation group. |
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| title: "CA Rotation" | ||
| description: "How to rotate Talos and Kubernetes API root certificate authorities." |
Iheanacho-ai
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Mar 16, 2026
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/m |
Add documentation for CA rotation for Kubernetes and Talos with `omnictl` Signed-off-by: Oguz Kilcan <oguz.kilcan@siderolabs.com>
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Add documentation for CA rotation for Kubernetes and Talos with
omnictl