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[v0.34] docs(doc-913): document storageNamespace fix for snapshots with cross-namespace Flux HelmRelease (#2150) #2154

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djwfyi merged 1 commit into from
May 20, 2026
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[v0.34] docs(doc-913): document storageNamespace fix for snapshots with cross-namespace Flux HelmRelease (#2150) #2154

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28 changes: 28 additions & 0 deletions ..._versioned_docs/version-0.34.0/third-party-integrations/git-operations/flux.mdx
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Expand Up @@ -680,3 +680,31 @@ kubectl get secret -n <vcluster-namespace> <kubeconfig-secret-name> -o jsonpath=
```yaml title="Recommended server URL format"
server: https://vcluster-name.vcluster-namespace.svc.cluster.local:443
```

#### Snapshots fail when HelmRelease is in a different namespace {#snapshot-namespace-mismatch}

When you deploy a tenant cluster through a `HelmRelease` resource that lives in a different namespace than the tenant cluster itself (for example, `HelmRelease` in `flux-system` and the tenant cluster in `mytestcluster`), Flux stores the Helm release secret in the `HelmRelease` namespace. The snapshot controller searches for the Helm release secret in the tenant cluster's namespace and fails to find it, which causes snapshots to fail.

To fix this, set `spec.storageNamespace` in the `HelmRelease` to the tenant cluster's namespace:

```yaml title="Set storageNamespace to match the tenant cluster namespace" {7}
apiVersion: helm.toolkit.fluxcd.io/v2
kind: HelmRelease
metadata:
name: my-vcluster
namespace: flux-system
spec:
storageNamespace: mytestcluster # Must match the tenant cluster namespace
targetNamespace: mytestcluster
interval: 10m
chart:
spec:
chart: vcluster
version: "0.26.x"
sourceRef:
kind: HelmRepository
name: vcluster
namespace: flux-system
```

With `storageNamespace` set, Flux stores the `helm.sh/release.v1` secret in `mytestcluster`, where the snapshot controller can find it.
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