Openshift

What does it mean?

csi                   Container Storage Interface
cri                   Container Runtime Interface
ocp                   OpenShift Container Platform

login

oc login --username developerhttps://openshift:6443

switch user

oc login --username developer

which clusters have you logged into

oc config get-clusters

List projects

oc projects
oc get projects

select project

oc project $project

list pods

oc get pods
oc get pods --all-namespaces
oc get pods -o wide

wide will give you on which node pod is running.

oc get pods -o wide --all-namespaces

get services

oc get svc

get shell on node

oc debug node/infra-2.ocpdev.lkl.ltkalmar.se

Get working env

chroot /host

get nodes

oc get nodes

connect to pod

oc rsh $pod bash

execute command in pod

oc exec pod/router-default-545ffb97db-4h9rx -- $command

describe pods

oc describe pods
oc describe pod stage-sales-62-qjd

To get (almost) all object with a specific label from the current project, execute:

oc get all -l '<label_name>=<label_value>'

logs

oc logs -f router-default-6b76b87c6-4lc4b logs > /tmp/tmp

get config from pod in yaml format

oc get pods router-default-545ffb97db-kgsdb -o yaml

get deployments

oc get deployment

set environment variable in pod

oc set env dc/your-app-name COLOR=blue

unset environment variable in pod

oc set env dc/your-app-name COLOR-

list environment variables

oc set env pod/router-default-545ffb97db-lj2t5 --list

list templates

oc get templates -n openshift

Custom resource definitions.(crd)

oc get crd

sort

CREATED AT

oc get crd --sort-by=.metadata.creationTimestamp

edit

oc edit deployment.apps/router-default

Watch changes taking place.

watch -n1 oc get all

grant permission to project

oc adm policy add-role-to-user view developer -n mysecrets

crictl

List running containers

crictl ps

List all pods

crictl pods

List all images

crictl images

Execute a command in a running container

crictl exec -it 1f73f2d81bf98 /bin/sh

nsenter

run program in different namespaces