How to list internal registry repositories and images in OpenShift 4

Environment

• OpenShift Container Platform
  • 4.x

Issue

• Registry console is no longer available in OpenShift 4, how can I list all the repositories and images from outside the cluster?

Resolution

• Expose the public route for the internal registry (disabled by default):

$ oc patch configs.imageregistry.operator.openshift.io/cluster --patch '{"spec":{"defaultRoute":true}}' --type=merge

• How to list all repositories (catalog):

$ TOKEN=$(oc whoami -t)
$ curl -k -H "Authorization: Bearer ${TOKEN}" "https://default-route-openshift-image-registry.apps.<clusterid>.<domain>/v2/_catalog" | jq .

Example:

$ curl -k -H "Authorization: Bearer ${TOKEN}" "https://default-route-openshift-image-registry.apps.pamoedo.example.com/v2/_catalog" | jq .
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  2803  100  2803    0     0  10010      0 --:--:-- --:--:-- --:--:-- 10046
{
  "repositories": [
    "openshift/apicast-gateway",
    "openshift/apicurito-ui",
    "openshift/cli",
    "openshift/cli-artifacts",
    "openshift/dotnet",
    "openshift/dotnet-runtime",
    "openshift/eap-cd-openshift",
    "openshift/fis-java-openshift",
    "openshift/fis-karaf-openshift",
    "openshift/fuse-apicurito-generator",
    "openshift/fuse7-console",
    "openshift/fuse7-eap-openshift",
    "openshift/fuse7-java-openshift",
    "openshift/fuse7-karaf-openshift",
    "openshift/golang",
    "openshift/httpd",
    "openshift/installer",
    "openshift/installer-artifacts",
    "openshift/java",
    "openshift/jboss-amq-62",
    "openshift/jboss-amq-63",
    "openshift/jboss-datagrid65-client-openshift",
    "openshift/jboss-datagrid65-openshift",
    "openshift/jboss-datagrid71-client-openshift",
    "openshift/jboss-datagrid71-openshift",
    "openshift/jboss-datagrid72-openshift",
    "openshift/jboss-datagrid73-openshift",
    "openshift/jboss-datavirt64-driver-openshift",
    "openshift/jboss-datavirt64-openshift",
    "openshift/jboss-decisionserver64-openshift",
    "openshift/jboss-eap64-openshift",
    "openshift/jboss-eap70-openshift",
    "openshift/jboss-eap71-openshift",
    "openshift/jboss-eap72-openshift",
    "openshift/jboss-fuse70-console",
    "openshift/jboss-fuse70-eap-openshift",
    "openshift/jboss-fuse70-java-openshift",
    "openshift/jboss-fuse70-karaf-openshift",
    "openshift/jboss-processserver64-openshift",
    "openshift/jboss-webserver30-tomcat7-openshift",
    "openshift/jboss-webserver30-tomcat8-openshift",
    "openshift/jboss-webserver31-tomcat7-openshift",
    "openshift/jboss-webserver31-tomcat8-openshift",
    "openshift/jboss-webserver50-tomcat9-openshift",
    "openshift/jenkins",
    "openshift/jenkins-agent-maven",
    "openshift/jenkins-agent-nodejs",
    "openshift/mariadb",
    "openshift/modern-webapp",
    "openshift/mongodb",
    "openshift/must-gather",
    "openshift/mysql",
    "openshift/nginx",
    "openshift/nodejs",
    "openshift/oauth-proxy",
    "openshift/openjdk-11-rhel7",
    "openshift/openjdk-11-rhel8",
    "openshift/openjdk-8-rhel8",
    "openshift/perl",
    "openshift/php",
    "openshift/postgresql",
    "openshift/python",
    "openshift/redhat-openjdk18-openshift",
    "openshift/redhat-sso70-openshift",
    "openshift/redhat-sso71-openshift",
    "openshift/redhat-sso72-openshift",
    "openshift/redhat-sso73-openshift",
    "openshift/redis",
    "openshift/rhdm-decisioncentral-rhel8",
    "openshift/rhdm-kieserver-rhel8",
    "openshift/rhdm-optaweb-employee-rostering-rhel8",
    "openshift/rhdm74-decisioncentral-openshift",
    "openshift/rhdm74-kieserver-openshift",
    "openshift/rhdm74-optaweb-employee-rostering-openshift",
    "openshift/rhpam-businesscentral-monitoring-rhel8",
    "openshift/rhpam-businesscentral-rhel8",
    "openshift/rhpam-kieserver-rhel8",
    "openshift/rhpam-smartrouter-rhel8",
    "openshift/rhpam74-businesscentral-monitoring-openshift",
    "openshift/rhpam74-businesscentral-openshift",
    "openshift/rhpam74-kieserver-openshift",
    "openshift/rhpam74-smartrouter-openshift",
    "openshift/ruby",
    "openshift/tests",
  ]
}

• How to list all tags from specific image:

$ TOKEN=$(oc whoami -t)
$ curl -k -H "Authorization: Bearer ${TOKEN}" "https://default-route-openshift-image-registry.apps.<clusterid>.<domain>/v2/<repository>/<image>/tags/list" | jq .

Example:

$ curl -k -H "Authorization: Bearer ${TOKEN}" "https://default-route-openshift-image-registry.apps.pamoedo.example.com/v2/openshift/mysql/tags/list" | jq .
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100    57  100    57    0     0    272      0 --:--:-- --:--:-- --:--:--   272
{
  "name": "openshift/mysql",
  "tags": [
    "5.7",
    "8.0",
    "latest"
  ]
}

Root Cause

• Registry console was deprecated and is no longer available in OpenShift 4.

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