Adding an insecure registry

CRC does not have a configuration option to provide an insecure registry. An insecure registry is a registry without a valid TLS certificate, or one which only supports HTTP connections.

Instructions

To provide the insecure registry my.insecure.registry.com:8888:

1. Start the cluster and log in to it as kubeadmin via oc:

$ crc start
[...]
INFO You can now run 'crc console' and use these credentials to access the OpenShift web console 
Started the OpenShift cluster
WARN The cluster might report a degraded or error state. This is expected since several operators have been disabled to lower the resource usage. For more information, please consult the documentation

$ eval $(crc oc-env)
$ oc login -u kubeadmin -p <kubeadmin_password> https://api.crc.testing:6443
Login successful.

You have access to 51 projects, the list has been suppressed. You can list all projects with 'oc projects'

Using project "default".

2. Patch the image.config.openshift.io resource and add your insecure registry details:

$ oc patch --type=merge --patch='{
  "spec": {
    "registrySources": {
      "insecureRegistries": [
      "my.insecure.registry.com:8888"
      ]
    }
  }
}' image.config.openshift.io/cluster
image.config.openshift.io/cluster patched

3. SSH to the VM and update the /etc/containers/registries.conf file to add details about the insecure registry:

$ crc ip
192.168.64.92

$ ssh -i ~/.crc/machines/crc/id_rsa -o StrictHostKeyChecking=no core@192.168.64.92

<CRC-VM> $ sudo cat /etc/containers/registries.conf 
unqualified-search-registries = ['registry.access.redhat.com', 'docker.io']

[[registry]]
  location = "my.insecure.registry.com:8888"
  insecure = true
  blocked = false
  mirror-by-digest-only = false
  prefix = ""

<CRC-VM> $ sudo systemctl restart crio
<CRC-VM> $ sudo systemctl restart kubelet
<CRC-VM> $ exit

4. Deploy your workload using the insecure registry:

$ cat test.yaml 
apiVersion: v1
kind: Pod
metadata:
  labels:
    run: test
  name: test
spec:
  containers:
  - image: my.insecure.registry.com:8888/test/testimage
    name: test
    command: ['sh', '-c', 'echo Hello Kubernetes! && sleep 3600']

$ oc create -f test.yaml
pod/test created

$ watch oc get events
46s         Normal    Scheduled                 pod/test                        Successfully assigned default/test to crc-shdl4-master-0
38s         Normal    Pulling                   pod/test                        Pulling image "my.insecure.registry.com:8888/test/testimage"
15s         Normal    Pulled                    pod/test                        Successfully pulled image "my.insecure.registry.com:8888/test/testimage"
15s         Normal    Created                   pod/test                        Created container test
15s         Normal    Started                   pod/test                        Started container test

$ oc get pods
NAME   READY   STATUS    RESTARTS   AGE
test   1/1     Running   0          8m40s

To perform each steps as bash script, you can try something following.

$ oc login -u kubeadmin -p $(crc console --credentials | awk -F "kubeadmin" '{print $2}' | cut -c 5- | rev | cut -c31- | rev) https://api.crc.testing:6443

$ oc patch --type=merge --patch='{
  "spec": {
    "registrySources": {
      "insecureRegistries": [
      "YOUR_REGISTRY"
      ]
    }
  }
}' image.config.openshift.io/cluster

$ ssh -i ~/.crc/machines/crc/id_rsa -o StrictHostKeyChecking=no core@$(crc ip) << EOF
  sudo echo " " | sudo tee -a /etc/containers/registries.conf
  sudo echo "[[registry]]" | sudo tee -a /etc/containers/registries.conf
  sudo echo "  location = \"YOUR_REGISTRY\"" | sudo tee -a /etc/containers/registries.conf
  sudo echo "  insecure = true" | sudo tee -a /etc/containers/registries.conf
  sudo echo "  blocked = false" | sudo tee -a /etc/containers/registries.conf
  sudo echo "  mirror-by-digest-only = false" | sudo tee -a /etc/containers/registries.conf
  sudo echo "  prefix = \"\"" | sudo tee -a /etc/containers/registries.conf
  sudo systemctl restart crio
  sudo systemctl restart kubelet
EOF