Configuring registry storage for bare metal

As a cluster administrator, following installation you must configure your registry to use storage.

  • Cluster administrator permissions.

  • A cluster on bare metal.

  • Provision persistent storage for your cluster, such as Red Hat OpenShift Container Storage. To deploy a private image registry, your storage must provide ReadWriteMany access mode.

  • Must have "100Gi" capacity.

  1. To configure your registry to use storage, change the spec.storage.pvc in the configs.imageregistry/cluster resource.

  2. Verify you do not have a registry Pod:

    $ oc get pod -n openshift-image-registry

    If the storage type is emptyDIR, the replica number cannot be greater than 1. If the storage type is NFS, and you want to scale up the registry Pod by setting replica>1 you must enable the no_wdelay mount option. For example:

    # cat /etc/exports
    /mnt/data *(rw,sync,no_wdelay,no_root_squash,insecure,fsid=0)
    sh-4.3# exportfs -rv
    exporting *:/mnt/data
  3. Check the registry configuration:

    $ oc edit configs.imageregistry.operator.openshift.io

    Leave the claim field blank to allow the automatic creation of an image-registry-storage PVC.

  4. Check the clusteroperator status:

    $ oc get clusteroperator image-registry

Additional resources

For more details on configuring registry storage for bare metal, see Recommended configurable storage technology.