Pass parameter dynamically while patching deployment config - openshift

Question

I want to pass parameter dynamically while patching any deployment config
oc patch dc/action-msa -p "$(cat msa-patch.yml)" --param service_account=msa-service-account
spec:
template:
spec:
serviceAccountName: ${service_account}
restartPolicy: "Always"
initContainers:
- name: vault-init
image: ${init_container_image}
imagePullPolicy: Always
containers:
- name: ${SERVICE_NAME}-java-service
image: ${main_container_image}
Is there any option or way to pass service_account, init_container_image and service_name dynamically while patching using openshift oc?

Answer 1

You would need template layer for this solution such as Kustomize, HELM and etc.
Or you can use environment file as a source before deploying your yaml files something like below
Your deployment.yaml looks like this:
spec:
template:
spec:
serviceAccountName: {{service_account}}
restartPolicy: "Always"
initContainers:
- name: vault-init
image: {{init_container_image}}
imagePullPolicy: Always
containers:
- name: {{SERVICE_NAME}}
image: {{main_container_image}}
your env.file looks like this:
service_account="some_account"
init_container_image="some_image"
SERVICE_NAME="service_name"
Then run
oc patch dc/action-msa -p \
"$(source env.file && cat deployment.yml | \
sed "s/{{service_account}}/service_account/g"| \
sed "s/{{init_container_image}}/init_container_image/g"| \
sed "s/{{SERVICE_NAME}}/SERVICE_NAME/g")" --param service_account=msa-service-account
Hope it helps