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fix(hetzner): deprecated server type will break on 2024-09-06 #7211

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@apricote apricote commented Aug 27, 2024

What type of PR is this?

/kind bug
/kind cleanup

What this PR does / why we need it:

The cx11 server type was deprecated on 2024-06-06 and will be removed from the API on 2024-09-06. Once it is removed, the cluster-autoscaler provider hetzner will fail every main loop with with the following error messages:

mixed_nodeinfos_processor.go:160] Unable to build proper template node for draining-node-pool: failed to create resource list for node group draining-node-pool error: failed to get machine type cx11 info error: server type not found
static_autoscaler.go:387] Failed to get node infos for groups: failed to create resource list for node group draining-node-pool error: failed to get machine type cx11 info error: server type not found

The server type is hardcoded in the draining-node-pool, which was used in the OG PR #3640 but unused in the second PR #3838 that was actually merged.

As the draining-node-pool is unused since the first release of this provider, I have opted to remove it altogether. In theory this is a user visible change, as this node pool is visible through the status config map

Which issue(s) this PR fixes:

Fixes #7210

Special notes for your reviewer:

We would like to back port this change to all actives releases ASAP. If you think this change does not qualify for a back port, I am happy to submit a different PR that only changes the hardcoded server type to one that will be available for longer.

This one is one me. I should have noticed this reference when checking our projects for hardcoded cx11 references when the deprecation was announced.

Does this PR introduce a user-facing change?

Fix Hetzner Provider not starting after 2024-09-07

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

- [Hetzner Cloud Changelog](https://docs.hetzner.cloud/changelog#2024-06-06-old-server-types-with-shared-intel-vcpus-are-deprecated)

@k8s-ci-robot k8s-ci-robot added do-not-merge/invalid-commit-message Indicates that a PR should not merge because it has an invalid commit message. kind/bug Categorizes issue or PR as related to a bug. kind/cleanup Categorizes issue or PR as related to cleaning up code, process, or technical debt. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. labels Aug 27, 2024
@k8s-ci-robot k8s-ci-robot requested a review from x13n August 27, 2024 07:46
@k8s-ci-robot k8s-ci-robot added area/provider/hetzner Issues or PRs related to Hetzner provider approved Indicates a PR has been approved by an approver from all required OWNERS files. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Aug 27, 2024
…type

The `cx11` server type was deprecated on 2024-06-06 and will be removed
from the API on 2024-09-06. Once it is removed, the cluster-autoscaler
provider hetzner will not start anymore with the following error
message:

    Failed to get node infos for groups: failed to create resource list for node group draining-node-pool error: failed to get machine type cx11 info error: server type not found

As the node pool `draining-node-pool` is not being used anywhere, this
commit removes it and the hard coded reference to the deprecated server
type.
@k8s-ci-robot k8s-ci-robot removed the do-not-merge/invalid-commit-message Indicates that a PR should not merge because it has an invalid commit message. label Aug 27, 2024
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: apricote, jooola

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approved Indicates a PR has been approved by an approver from all required OWNERS files. area/cluster-autoscaler area/provider/hetzner Issues or PRs related to Hetzner provider cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. kind/bug Categorizes issue or PR as related to a bug. kind/cleanup Categorizes issue or PR as related to cleaning up code, process, or technical debt. size/S Denotes a PR that changes 10-29 lines, ignoring generated files.
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Hard-coded server type in Hetzner provider will break on 2024-09-06
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