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gcp: add note on discard_unpacked_layers for GKE #2257

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8 changes: 8 additions & 0 deletions src/cloud-api-adaptor/gcp/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,14 @@ gcloud container clusters create my-cluster \
--num-nodes 3
```

> [!NOTE]
> Starting with GKE version 1.27, GCP configures containerd with the
> `discard_unpacked_layers=true` flag to optimize disk usage by removing
> compressed image layers after they are unpacked. However, this can cause
> issues with PeerPods, as the workload may fail to locate required layers. To
> avoid this, disable the `discard_unpacked_layers` setting in the containerd
> configuration.

Regardless of the method used, at the end you should have a KUBECONFIG pointing
to the auth file and a cluster up and running:

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