[CA] [AWS examples] Add priorityClassName & securityContext & upgrade image

[damienleger]

Hello, some improvements on AWS examples.

To ensure the pod is scheduled

priorityClassName: system-cluster-critical

To run pod as non-root (security best practice)

securityContext:
  runAsNonRoot: true
  runAsUser: 65534

And use the last image (1.22.0).

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[damienleger]

I signed it

[gjtempleton]

Hey, thanks for the PR.

One quick comment for you for now.

I also want to double-check all the examples still work as intended with the new security settings and won't be able to do that until next week.

[gjtempleton]

/assign @gjtempleton

[damienleger]

Hello @gjtempleton, thanks for reply

I also want to double-check all the examples still work as intended with the new security settings and won't be able to do that until next week.

The modified cluster-autoscaler-autodiscover.yaml with 1.22.0 (*) image, priorityClassName, and securityContext runs in my 1.21 EKS. I haven't tested the other.

(*) I use the 1.22 image in EKS 1.21 since there is no API deprecated in 1.22 used by cluster-autoscaler but I agree with you, it's simpler to stick with the 1:1 version mapping with EKS and cluster-autoscaler.

[gjtempleton]

Thanks for that.

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: damienleger, gjtempleton

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