Red Hat OpenShift
From wiki.vacula.xyz
Commands
| Command | Used for... | Notes |
|---|---|---|
| oc whoami | See who you are logged in as | |
| oc login | Log in to the cluster | Defaults to using a web login, but user/pass can be provided over the command line |
| oc new-project | Create a new project (namespace) | |
| oc describe | Get detailed information on a resource instance | |
| oc explain | Get documentation on a resource object | |
| oc api-resources | Get a list of all API resources | --api-group can be used to limit to certain API groups |
| oc adm top | Get resource usage on pods and similar | --sum will show a sum of resource usage |
| oc events | Get high-level logs | Helpful for things like image pull or pvc issues |
| oc debug | Open a shell session in the pod or node | Uses the first container by default, but as a copy; can also be used to log in to physical nodes |
| oc attach -it | Connect and create an interactive session with a pod | |
| oc image | Get info about an image | |
| skopeo list-tags | List all tags for a given image | |
| skopeo inspect | Get image info like env variables and tags |
Commands to avoid using:
| Command | Used for | Use instead | Because |
|---|---|---|---|
| oc run | Create a single pod | ||
Important Resource Types
- statefulset
- replica
| Resource | Description | Useful for... | OS Only? |
|---|---|---|---|
Anki Questions
- What is <resource>?
- What command should be used to <action>?
- Where is <resource> useful compared to similar ones?
