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This is an excerpt of my deployment config:
...
spec:
containers:
- env:
- name: GIT_USERNAME
valueFrom:
secretKeyRef:
key: username
name: git
- name: GIT_PASSWORD
valueFrom:
secretKeyRef:
key: password
name: git
initContainers:
- args:
- clone
- '--single-branch'
- '--'
- 'https://$(GIT_USERNAME):$(GIT_PASSWORD)@someurl.com/something.git'
- '/testing/'
image: alpine/git
imagePullPolicy: Always
name: init-clone-repo
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /testing
name: test-volume
volumes:
- emptyDir: {}
name: test-volume
...
The initContainer fails, because $(GIT_USERNAME) and $(GIT_PASSWORD) are used as is and not expanded. I have tried $GIT_USERNAME, ${GIT_USERNAME} and I am pretty much out of ideas.
How do I correctly use environment variables in args for init containers?
413
To add a new environment variable use the oc set env command. Adding an environment variable to a deployment configuration would typically result in a new deployment being triggered. If you need the value to include the literal string of form $(<VARNAME>) , use $$(<VARNAME>) to prevent it from being interpreted.
To set environment variables, include the env or envFrom field in the configuration file. Note: The environment variables set using the env or envFrom field override any environment variables specified in the container image. Note: Environment variables may reference each other, however ordering is important.
Use the -e , --env , and --env-file flags to set simple (non-array) environment variables in the container you're running, or overwrite variables that are defined in the Dockerfile of the image you're running.
When you create a Pod, you can set dependent environment variables for the containers that run in the Pod. To set dependent environment variables, you can use $(VAR_NAME) in the value of env in the configuration file.
Add environment variable in the init container.
spec:
initContainers:
- args:
- clone
- '--single-branch'
- '--'
- 'https://$(GIT_USERNAME):$(GIT_PASSWORD)@someurl.com/something.git'
- '/testing/'
image: alpine/git
imagePullPolicy: Always
name: init-clone-repo
env:
- name: GIT_USERNAME
valueFrom:
secretKeyRef:
key: username
name: git
- name: GIT_PASSWORD
valueFrom:
secretKeyRef:
key: password
name: git
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /testing
name: test-volume
volumes:
- emptyDir: {}
name: test-volume
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