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myasnikovdaniil
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## What this PR does > **Supersedes #2610.** Same work, rebased cleanly onto current `main` so it now sits on top of #2867 (the `kube-controller-manager` VAP type-checker fix). That fix is what was killing the base install in #2610's E2E *before* the `kubernetes` app test ever ran, leaving the Talos worker-bootstrap rewrite verified only by code reading. #2610's 67-commit branch is squashed here into 8 logical commits with original authorship preserved (@kvaps and @IvanHunters as authors); the tree is **byte-identical** to #2610's head — no code changes, just the rebase onto `main` (to pick up #2867) plus history cleanup. The detailed review history lives on #2610. Phase 1 of the Kubernetes-app split design (see cozystack/community#8): replace the Ubuntu+kubeadm worker bootstrap path with Talos, driven by `cluster-api-bootstrap-provider-talos` (CABPT) and a `clastix/talos-csr-signer` sidecar embedded in the Kamaji control-plane pod. Existing tenants keep working — old machines roll out and get replaced by Talos workers without manual intervention. Highlights: - Add CABPT (v0.6.12) as a second `BootstrapProvider` alongside the existing kubeadm one in `capi-providers-bootstrap`. - Bump the Kamaji control-plane provider with an upstream-bound patch that exposes `KamajiControlPlane.spec.network.additionalServicePorts`, used to publish trustd (50001/TCP) on the apiserver service. - Generate Talos PKI (Ed25519 CA + trustd TLS) via cert-manager and stable random Talos secrets (`token`, `clusterId`, `clusterSecret`, `bootstrapToken`) using the helm lookup-and-reuse pattern. - Materialise a kubeadm-format `bootstrap-token-<id>` Secret inside the tenant `kube-system` via a Helm post-install/upgrade Job. - Render a `TalosConfigTemplate` (worker machineconfig, `generateType: none`) and switch the `MachineDeployment.bootstrap` reference from `KubeadmConfigTemplate` to `TalosConfigTemplate`, gated on Talos secrets and the Kamaji apiserver service being ready. - Boot workers from the Talos openstack image via a CDI `DataVolume` (`source.http.url` → `factory.talos.dev`), expose the system disk as virtio-blk with `blockSize.custom: logical=512, physical=4096` so 4Ki-native block storage backends (LINSTOR/DRBD) play nicely with QEMU's O_DIRECT writes and SeaBIOS still boots, drop the separate kubelet disk (Talos lays out EPHEMERAL itself). - Pin pod/service CIDRs in the worker machineconfig to the tenant ranges (`10.243.0.0/16` / `10.95.0.0/16`) to avoid Talos's address-overlap diagnostic against the host pod CIDR. - Set `cluster.controlPlane.endpoint` and `cilium.k8sServiceHost` to the Kamaji apiserver Service ClusterIP (looked up at render time), so bootstrap survives the chicken-and-egg moment where tenant DNS does not exist yet and the host CoreDNS does not serve the tenant zone. End-to-end on a dev cluster: a fresh tenant brings up a Talos worker, kubelet CSRs get approved (apiserver-client by Kamaji, kubelet-serving by the talos-csr-signer sidecar), Cilium initialises with hostNetwork against the apiserver ClusterIP, CoreDNS comes up, and the node transitions to `Ready`. ### Release note ```release-note feat(kubernetes): bootstrap tenant workers with Talos Linux instead of Ubuntu+kubeadm. Existing clusters roll over to Talos workers automatically; new tenants come up on Talos from the start. Powered by cluster-api-bootstrap-provider-talos and the talos-csr-signer sidecar in the Kamaji control-plane pod. Note: the tenant `kubernetes` HelmRelease now reports Ready as soon as Helm completes (Install/Upgrade DisableWait) and no longer blocks on worker/addon readiness — worker-rollout health is tracked by WorkloadMonitor, not the HelmRelease. ``` <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit ## Release Notes **New Features** * Added Talos worker configuration for `talos.version` and `talos.schematicID` * Introduced `nodeHealthCheck` (`maxUnhealthy`, `nodeStartupTimeout`) for worker remediation tuning * Added image overrides for `kubectl` and `talosCsrSigner` * Exposed additional tenant control-plane Service ports support **Breaking Changes** * Removed Kubernetes v1.30; supported versions start at v1.31 * Renamed `nodeGroups.ephemeralStorage` → `nodeGroups.diskSize` with consolidated Talos system-disk semantics **Removals** * Removed Ubuntu container-disk images and related containerd patch mechanisms * Air-gapped tenant workers temporarily unsupported during the Talos transition **Documentation** * Updated chart docs, parameters, and GitOps upgrade guidance for version bumps <!-- end of auto-generated comment: release notes by coderabbit.ai -->