[v1.27] fix(hetzner): insufficient nodes when boot fails #6366
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
The Hetzner Cloud API returns "Actions" for anything asynchronous that happens inside the backend. When creating a new server multiple actions are returned: `create_server`, `start_server`, `attach_to_network` (if set). Our current code waits for the `create_server` and if it fails, it makes sure to delete the server so cluster-autoscaler can create a new one immediately to provide the required capacity. If one of the "follow up" actions fails though, we do not handle this. This causes issues when the server for whatever reason did not start properly on the first try, as then the customer has a shutdown server, is paying for it, but does not receive the additional capacity for their Kubernetes cluster. This commit fixes the bug, by awaiting all actions returned by the create server API call, and deleting the server if any of them fail.
k8s-ci-robot
added
kind/bug
|
[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: apricote The full list of commands accepted by this bot can be found here. The pull request process is described here
Needs approval from an approver in each of these files:
Approvers can indicate their approval by writing |
k8s-ci-robot
added
the
approved
|
/lgtm |
k8s-ci-robot
added
the
lgtm
|
/lgtm |
k8s-ci-robot
merged commit e1b7582
into
kubernetes:cluster-autoscaler-release-1.27
6 checks passed
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What type of PR is this?
/kind bug
What this PR does / why we need it:
Backport of #6364 to
v1.27.Which issue(s) this PR fixes:
Fixes #
Special notes for your reviewer:
Does this PR introduce a user-facing change?
Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.: