pgvector/minikube: error

[pmpetit]

trying to test on minikube fails with

cluster.yaml :

apiVersion: postgresql.cnpg.io/v1
kind: Cluster
metadata:
  name: cluster-pgvector
spec:
  imageName: ghcr.io/cloudnative-pg/postgresql:18-minimal-trixie
  instances: 1

  storage:
    size: 1Gi

  postgresql:
    extensions:
    - name: pgvector
      image:
        reference: ghcr.io/cloudnative-pg/pgvector:0.8.1-18-trixie

│ Events:                                                                                                                                                                                     │
│   Type     Reason     Age   From               Message                                                                                                                                      │
│   ----     ------     ----  ----               -------                                                                                                                                      │
│   Normal   Scheduled  5s    default-scheduler  Successfully assigned default/cluster-pgvector-1-initdb-dscx4 to minikube                                                                    │
│   Normal   Pulling    5s    kubelet            Pulling image "ghcr.io/cloudnative-pg/pgvector:0.8.1-18-trixie"                                                                              │
│   Warning  Failed     5s    kubelet            Failed to pull image "ghcr.io/cloudnative-pg/pgvector:0.8.1-18-trixie": Error response from daemon: Head "https://ghcr.io/v2/cloudnative-pg/ │
│ pgvector/manifests/0.8.1-18-trixie": denied                                                                                                                                                 │
│   Warning  Failed     5s    kubelet            Error: ErrImagePull                                                                                                                          │
│   Normal   BackOff    4s    kubelet            Back-off pulling image "ghcr.io/cloudnative-pg/pgvector:0.8.1-18-trixie"                                                                     │
│   Warning  Failed     4s    kubelet            Error: ImagePullBackOff                                                                                                                      │
│                                                                        

[NiccoloFei]

Which container runtime are you using on minikube? and which version?
AFAIK the only 2 supporting ImageVolumes are CRI-O since v1.31 and containerd since v2.1.0, as mentioned in https://kubernetes.io/blog/2025/04/29/kubernetes-v1-33-image-volume-beta/.

I've tried starting minikube using the default kicbase image, and:

• with minikube start --container-runtime=containerd I got v1.7.27
• with minikube start --container-runtime=cri-o I got v1.24.6

I'm not sure if that means currently you must use a custom kicbase image or if there are other ways around it.

Besides the container runtime, you also need K8S 1.33 or greater and to enable the ImageVolume feature gate.

EDIT: I see that you are using ghcr.io/cloudnative-pg/pgvector:0.8.1-18-trixie but images haven't been pushed to their respective production repositories yet, we are still finalizing the project's pipeline.
You can test with ghcr.io/cloudnative-pg/pgvector-testing:0.8.1-18-trixie for now.