Possibility to disable hostname-override in kubelet

[DOboznyi]

According to the CIS benchmark kubelet shouldn't have the hostname-override flag. So it will be great to have the possibility to disable hostname-override.

Ref #6150

[DOboznyi]

Can be removed this part?

kops/pkg/model/components/kubelet.go

Line 136 in a140168

if clusterSpec.Kubelet.HostnameOverride == "" {

[olemarkus]

In most instances, this flag is ignored, if I remember correctly. So we could force it to empty. PRs welcomed.

[DOboznyi]

@olemarkus according to docs if --cloud-provider is set, the cloud provider determines the name of the node. So i'll prepare PR with removing hostname-override as default. Also tested locally, everything works on our environments.

[olemarkus]

Sounds good. Thanks

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/lifecycle stale

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/lifecycle rotten

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[olemarkus]

/reopen

[k8s-ci-robot]

@olemarkus: Reopened this issue.

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/reopen

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/close

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@k8s-triage-robot: Closing this issue.

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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You can:

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/close

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[olemarkus]

Unfortunatly, as we are moving towards external CCM, we do need to keep hostname-override around for AWS since AWS require hostnames that do not match the actual name of the host.