OpenShift Tips

Deployments

Import environment variables from a file

(via https://twitter.com/kamesh_sampath/status/1179984908690739201)

Instead modifying the deployment, you can create an environment variables file such as myvars.env:

MYSQL_DB="mysql"
MYSQL_DBPORT="3306"
OTHERVAR="foo"

Then:

cat myvars.env | oc set env -e - deployment/mydeployment -n mynamespace

Set some of the local shell environment into a deployment config

env | grep MYSQL_ | oc set env -e - deployment/mydeployment -n mynamespace

Import environment variables from a configmap with a prefix

oc set env --from=configmap/myconfigmap --prefix=MYSQL_ deployment/mydeployment -n mynamespace

Import specific keys from a configmap

oc set env --from=configmap/myconfigmap --keys=OTHERVAR deployment/mydeployment -n mynamespace

Remove environment variable in a deployment

oc set env -e OTHERVAR- deployment/mydeployment -n mynamespace

Remove environment variable from container ‘c1’ in a deployment

oc set env deployment/mydeployment --containers="c1" OTHERVAR-

Remove environment variable from container ‘c1’ in all deployments

oc set env deployments --all --containers="c1" OTHERVAR-

Show logs for all containers within a pod

oc logs <pod> --all-containers

Show logs for all containers within a pod with pod name and container name

oc logs <pod> --all-containers --prefix
Last updated on 28 May 2020
Published on 18 Jun 2019
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