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feat(backend): Source ObjStore Creds from Env in Tekton Template #1259

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gmfrasca
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Which issue is resolved by this Pull Request:
Resolves #

Description of your changes:
There is a hard-coded reference to a Secret named mlpipeline-minio-artifact that contains credentials metadata to the Object Store. This is the only instance of this, so sourcing the metadata from the apiserver's Env Vars (where it is already provided) will make deployments more flexible and is better practice, in general.

Also updates a viper config variable to match/target what is used across the rest of the project and manifests. It was also the only instance of this (_SECRETKEY rather than _SECRETACCESSKEY), so likely was a typo.

Environment tested:

  • Python Version (use python --version): 3.11.1
  • Tekton Version (use tkn version): v0.31.4
  • Kubernetes Version (use kubectl version): v1.22
  • OS (e.g. from /etc/os-release): Fedora 37

Checklist:

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@@ -146,6 +146,14 @@ func GetArtifactImage() string {
return GetStringConfigWithDefault(ArtifactImage, DefaultArtifactImage)
}

func GetObjectStoreAccessKey() string {
return GetStringConfig(ObjectStoreAccessKey)
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By getting the S3 credential from viper, the whole cluster has to share the same S3 credential for all users. Whereas by getting the S3 credential from the secret, because users has full control of their namespaces so they can update the mlpipeline-minio-artifact with their own S3 credential without impacting other users.

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(this and the following review feedback items are related so centralizing the discussion here)

This makes sense, and it would be good to parameterize these somehow. As you mentioned below, the easiest path is probably to create some new env vars for the s3 Secret name, accesskey Key, and secretkey Key. It is a little clunky, but does remove the hardcoded secret name. However, this would mean every namespace would need to use identical secret names across Namespaces (ie namespace1 and namespace2 can each have a foo-s3-secret with different contents, but the secret must always be named foo-s3-secret and use the same accesskey and secretkey keys.

I think that's a step in the right direction but it would be better if a namespace can individually reference an arbitrary secret name in a vacuum (namespace1 references foo-secret but namespace2 references bar-secret). I'm not sure of a clean way to incorporate that though, you wouldn't happen to know of a better vector for retrieving these parameters than apiserver env vars, would you? If not I can push a changeset that implements the parameterized secret name as outline above.

@@ -354,8 +356,8 @@ func (t *Tekton) injectArchivalStep(workflow util.Workflow, artifactItemsJSON ma
t.getObjectFieldSelector("PIPELINERUN", "metadata.labels['tekton.dev/pipelineRun']"),
t.getObjectFieldSelector("PODNAME", "metadata.name"),
t.getObjectFieldSelector("NAMESPACE", "metadata.namespace"),
t.getSecretKeySelector("AWS_ACCESS_KEY_ID", "mlpipeline-minio-artifact", "accesskey"),
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maybe instead of hard code the mlpipeline-minio-artifact secret name, we can parameterize it so users can point to other secret name for s3 credentials.

@@ -354,8 +356,8 @@ func (t *Tekton) injectArchivalStep(workflow util.Workflow, artifactItemsJSON ma
t.getObjectFieldSelector("PIPELINERUN", "metadata.labels['tekton.dev/pipelineRun']"),
t.getObjectFieldSelector("PODNAME", "metadata.name"),
t.getObjectFieldSelector("NAMESPACE", "metadata.namespace"),
t.getSecretKeySelector("AWS_ACCESS_KEY_ID", "mlpipeline-minio-artifact", "accesskey"),
t.getSecretKeySelector("AWS_SECRET_ACCESS_KEY", "mlpipeline-minio-artifact", "secretkey"),
t.getEnvVar("AWS_ACCESS_KEY_ID", objectStoreAccessKey),
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Using getEnvVar will expose the S3 credentials as raw string in the pod spec. We should try to get the env variable from the secret instead of passing the raw string into env variable.

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yikes, didn't realize this was getting templated into the pod spec directly, sorry about that. Upcoming changeset will revert back to getSecretKeySelector

@google-oss-prow google-oss-prow bot added size/M and removed size/S labels Aug 14, 2023
@gmfrasca gmfrasca force-pushed the parameterize-objstore-secret-name branch from 5ccfa0a to 3823331 Compare August 14, 2023 21:23
@Tomcli
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Tomcli commented Aug 17, 2023

Thanks @gmfrasca, could you rebase this PR with the latest commit so we can test it against the new Tekton v1 API?

ObjectStoreAccessKey string = "OBJECTSTORECONFIG_ACCESSKEY"
ObjectStoreSecretKey string = "OBJECTSTORECONFIG_SECRETKEY"
ObjectStoreSecretKey string = "OBJECTSTORECONFIG_SECRETACCESSKEY"
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@rimolive I remember you introduced this new variable. In KFP-Tekton I don't think we are using this variable in open source. Are you okay with this change?

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FWIW I believe this was just a typo that I've corrected here, vanilla KFP has instances of what I've updated it to (OBJECTSTORECONFIG_SECRETACCESSKEY) in their manifests, but as @Tomcli noted it doesn't appear to be used anywhere here in KFP-Tekton so it never broke anything.

@gmfrasca gmfrasca force-pushed the parameterize-objstore-secret-name branch from 3823331 to a126ab4 Compare August 22, 2023 19:26
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Tomcli commented Aug 22, 2023

/lgtm
/approve
thanks @gmfrasca

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gmfrasca, Tomcli

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