Absolutely! Here’s a comprehensive list of the Top 100 most frequently used oc (OpenShift CLI) commands, with a quick explanation for each. This will help you navigate OpenShift clusters efficiently, whether you’re a beginner or an experienced SRE/DevOps engineer.

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Top 100 Most Frequently Used oc Commands and Their Usage

Authentication & Context

1. oc login <server>
   Authenticate to an OpenShift cluster.
2. oc whoami
   Show your current user.
3. oc whoami -t
   Display your current token.
4. oc projects
   List all available projects (namespaces).
5. oc project <project>
   Switch to a different project.
6. oc logout
   Log out of the current cluster.
7. oc config view
   Show kubeconfig details.
8. oc config get-contexts
   List contexts.
9. oc config use-context <context>
   Switch context.
10. oc config set-context ...
    Set context options.

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General Cluster Info

11. oc status
    See an overview of your project.
12. oc get all
    List all resources in the namespace.
13. oc version
    Show client and server versions.
14. oc explain <resource>
    Get documentation on a resource.
15. oc api-resources
    List all resource types.

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Get & List Resources

16. oc get pods
    List all pods.
17. oc get pod <podname>
    Show a specific pod.
18. oc get deployments
    List all deployments.
19. oc get deployment <name>
    Show a deployment.
20. oc get svc
    List services.
21. oc get svc <name>
    Show a service.
22. oc get routes
    List all routes.
23. oc get route <name>
    Show a specific route.
24. oc get secrets
    List all secrets.
25. oc get configmaps
    List configmaps.
26. oc get nodes
    List nodes in the cluster.
27. oc get namespaces
    List all namespaces.
28. oc get events
    Show recent events.
29. oc get pv
    List persistent volumes.
30. oc get pvc
    List persistent volume claims.
31. oc get rs
    List replica sets.
32. oc get dc
    List deployment configs (OpenShift classic).
33. oc get builds
    List builds.
34. oc get buildconfigs
    List build configs.
35. oc get imagestreams
    List image streams.

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Create & Apply Resources

36. oc new-project <name>
    Create a new project.
37. oc new-app <image/template>
    Deploy an app from an image or template.
38. oc create -f <file.yaml>
    Create resources from a YAML/JSON file.
39. oc apply -f <file.yaml>
    Apply a configuration to a resource by file.
40. oc process -f <template.yaml>
    Process a template.
41. oc create secret generic ...
    Create a generic secret.
42. oc create configmap ...
    Create a configmap.
43. oc expose svc/<svc-name>
    Create a route to a service.
44. oc expose deployment/<deploy-name>
    Expose a deployment as a service.

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Update & Edit Resources

45. oc edit <resource> <name>
    Edit a resource in your default editor.
46. oc set image deployment/<name> <container>=<image>
    Update container image.
47. oc set resources ...
    Update CPU/memory requests and limits.
48. oc patch <resource> <name> -p '<json-patch>'
    Patch a resource.
49. oc annotate <resource> <name> <key>=<value>
    Add annotation.
50. oc label <resource> <name> <key>=<value>
    Add label.

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Delete Resources

51. oc delete pod <name>
    Delete a pod.
52. oc delete deployment <name>
    Delete a deployment.
53. oc delete svc <name>
    Delete a service.
54. oc delete route <name>
    Delete a route.
55. oc delete project <name>
    Delete a project.
56. oc delete -f <file.yaml>
    Delete resources from file.

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Resource Details & Troubleshooting

57. oc describe <resource> <name>
    Show details about a resource.
58. oc logs <pod>
    Show logs for a pod.
59. oc logs deployment/<name>
    Show logs for a deployment.
60. oc rsh <pod>
    Open a remote shell into a pod.
61. oc exec <pod> -- <command>
    Execute a command in a pod.
62. oc port-forward <pod> <local-port>:<pod-port>
    Forward port from pod to local machine.
63. oc cp <pod>:<src> <dest>
    Copy files from pod to local (or vice versa).

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Scaling & Rollout

64. oc scale deployment/<name> --replicas=3
    Scale a deployment.
65. oc rollout status deployment/<name>
    Watch rollout status.
66. oc rollout history deployment/<name>
    View rollout history.
67. oc rollout undo deployment/<name>
    Roll back to previous revision.

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Builds & Images

68. oc start-build <buildconfig>
    Start a build.
69. oc logs build/<buildname>
    Show build logs.
70. oc tag <src-image> <dest-image>
    Tag images between streams.

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Templates & Catalog

71. oc get templates
    List templates.
72. oc process <template>
    Process a template.
73. oc describe template <name>
    Show details about a template.

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Security & Policies

74. oc policy who-can <verb> <resource>
    See who can do what.
75. oc adm policy add-role-to-user <role> <user>
    Add a role to a user.
76. oc adm policy remove-role-from-user <role> <user>
    Remove role from user.
77. oc adm policy add-scc-to-user <scc> <user>
    Add Security Context Constraint.

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Admin & Diagnostics

78. oc adm top pods
    Show pod resource usage.
79. oc adm top nodes
    Show node resource usage.
80. oc adm diagnostics
    Run diagnostic checks.
81. oc adm prune images
    Prune old images.
82. oc adm manage-node <node> ...
    Node management commands.
83. oc adm node-logs <node>
    Show logs from a node.

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Miscellaneous

84. oc get jobs
    List jobs.
85. oc get cronjobs
    List cron jobs.
86. oc create job ...
    Create a new job.
87. oc debug node/<node>
    Start a debug pod on node.
88. oc run ...
    Run a new pod.
89. oc set env <resource> <KEY>=<VAL>
    Set environment variable(s).
90. oc set volume ...
    Attach/detach volumes.
91. oc get networkpolicies
    List network policies.
92. oc get serviceaccounts
    List service accounts.
93. oc get endpoints
    List endpoints.
94. oc get ingress
    List ingresses.
95. oc create role ...
    Create a role.
96. oc create rolebinding ...
    Bind a role.
97. oc explain <resource> --recursive
    Show full resource documentation.
98. oc set probe deployment/<name> ...
    Set liveness/readiness probes.
99. oc set selector ...
    Update resource selector.
100. oc set serviceaccount <resource> <serviceaccount>
     Set service account for deployment/pod.

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Tips

• Use -n <namespace> to specify a namespace/project for any command.
• Use -o yaml|json|wide to output in different formats.
• Tab completion works great for oc!

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Bonus: Get All Resource Types

oc api-resources