CODEWITHSUNDEEP
openshift
vikash sagar
vikash sagar

Reputation: 23

Partial install of OpenShift template resources

I have a Openshift template yml which will create the following objects "deploymentconfig, buildconfig, services and imagetag". To create all the objects in the template , we can use below command, oc process -f openshift-template.yml | oc apply -f-

Is there any way to create only deploymentconfig or service from the openshift template?

Upvotes: 2

Views: 131

Answers (1)

Rinor
Rinor

Reputation: 1999

This is possible using label selectors as shown in the example below:

  1. Add a label to the resources you want to install e.g. the label example.com/install: "true" for the configmap my-username.
apiVersion: v1
kind: Template
metadata:
  name: user-template
objects:
- apiVersion: v1
  kind: ConfigMap
  metadata:
    name: my-username
    labels:
      example.com/install: "true"
  data:
    username: ${USERNAME}
- apiVersion: v1
  kind: ConfigMap
  metadata:
    name: not-installed
  data:
    username: ${USERNAME}
parameters:
- description: USERNAME for authentication
  from: '[A-Z0-9]{8}'
  generate: expression
  name: USERNAME
  1. Specify the selector when executing the oc create command, for example:
$ oc process -f template.yaml -p USERNAME=rmaloku \
  | oc create --selector example.com/install=true -f -

configmap/my-username created

From the output, we can see that only the labeled resource is installed.

Description of the selector flag:

 --selector='': Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2)

Upvotes: 4

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