How to deploy functions automatically in CI?

[drriguz]

Hello,
I'm tring to deploy functions automatically using tekton, and ci is expected to be triggered by git commits. I could not find any document mentioning the way to deploy functions in ci, I think there might be a few options:

• Since func deploy --remote will create a pipeline to deploy the function, we can reuse the created pipeline and configure a tekton trigger to initialize the pipelinerun
• May be it's possible to run func deploy --remote directly inside a tekton task?
• Build the image locally and push to a registry. But then how to deploy the image?

Whic one is recommended?

[lkingland]

Hello @drriguz,

Yes, this is a use-case which we think is core to the usage of Functions. I am sorry we don't have documentation or additional resources yet available, but they are on the way!

For now you really have one best option: Run func deploy --remote from within CI/CD (a GitHub Action, for exampple) which will trigger the build and deploy tekton task. You will of course need Tekton installed in your cluster. You will also need to have a container registry ready to go such as docker.io (unless you're running OpenShift which has one built in).

When your CI/CD action runs func deploy --remote, it will send all of the local source code to the cluster for packaging and deployment (no need to run func... from within the cluster; that's automatic.

So if you have been able to build and deploy your Function from your local machine, it will have the registry already set. Commit everything (including the func.yaml). Then, your CI/CD action should have the following pseudocode:

On Merge to main:
Check out your Function's source code (its current state)
Pull the latest `func` binary
run `func deploy --remote`

[lkingland]

Please re-open if this did not answer your question @drriguz, or join us in the CNCF Slack channel to help put together your CI/CD task.

[drriguz]

Please re-open if this did not answer your question @drriguz, or join us in the CNCF Slack channel to help put together your CI/CD task.

Thanks, this solves my problem. In my case, I have a problem building the source in CI because it's air-gapped network, my choice is currently running build on local device and use func deploy --image=xxx option.