OC Commands
# Login Commands
source /usr/local/etc/ocp4.config
oc login -u kubeadmin -p ${RHT_OCP4_KUBEADM_PASSWD} https://api.ocp4.example.com:6443
# If Auth is configured then you can directly login with that account
oc login -u USER_NAME -p PASSWORD https://api.ocp4.example.com:6443
oc whoami
oc whoami -t # To get token
# Cluster Commands
oc get clusterversion
oc describe clusterversion
oc get clusteroperators
# Node Commands
oc get nodes
oc adm top node
oc describe node master01
# Project Commands
oc get project # To get projects
oc project <PROJECT_NAME> # To connect to a project
oc project openshift-image-registry
oc status # To check the status of the project
oc get events # To list all events from the connected project
oc get all # To list all about project
# Pod Commands
oc get pod -n <PROJECT_NAME> # To list pods from specific project
oc get project # To get projects
oc get pod -n openshift-image-registry
oc get pod -A # To list all pods from all projects
oc logs --tail <NO_LOGS_ToDisplay> <PROJECT_NAME> <POD_NAME>
oc logs --tail 3 -n openshift-image-registry cluster-image-registry-operator-xx
oc logs <POD_NAME> -c <CONTAINER_NAME> # To get logs from container
oc get pod --loglevel 6
oc get pod --loglevel 10
# To get Node & it's services logs
oc adm node-logs --tail <NO_LOGS_ToDisplay> -u kubelet <NODE_NAME>
oc adm node-logs --tail 1 -u kubelet master01
oc adm node-logs -u crio master01
oc adm node-logs master01
# To start shell session to the node
oc debug node/<NODE_NAME>
oc debug node/master01
chroot /host #To change file system to the node
# To check the services status which are running on host
systemctl status kubelet
systemctl status cri-o
crictl ps --name openvswitch # To check openvswitch pod running status
# PODMAN Commands
podman login registry.redhat.io # To login to redhat registry
# SKOPEO Commands
skoppeo inspect <IMAGE_URL>
skoppeo inspect docker://registry.redhat.io/rhel8/postgresql-13:1
# Deployment Commands
oc get deployment
oc edit deployment/<DEPLOYMENT_NAME>
oc edit deployment/psql # To edit deployment configuration yaml file
oc debug deployment/my-deployment-name --as-root # To create a test debug deployment pod to troubleshoot the issue
oc rsh POD_NAME # Opens a shell inside a pod to run shell commands interactively and non-interactively.
oc cp /local/path POD_NAME:/container/path # Copies local files to a location inside a pod.
oc port-forward POD_NAME local-port:remote-port # Creates a TCP tunnel from local-port on your workstation to local-port on the pod
