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Allow components to generate certificates in-memory #69884

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merged 1 commit into from
Oct 30, 2018

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@liggitt liggitt commented Oct 16, 2018

What this PR does / why we need it:
Allows components to generate self-signed certificates in-memory if no certificate directory is specified. Defaults kube-controller-manager and cloud-controller manager to doing so.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #68973

Special notes for your reviewer:

Release note:

kube-controller-manager and cloud-controller-manager now hold generated serving certificates in-memory unless a writeable location is specified with --cert-dir

/assign @sttts

@k8s-ci-robot k8s-ci-robot added the release-note Denotes a PR that will be considered when it comes time to generate release notes. label Oct 16, 2018
@k8s-ci-robot k8s-ci-robot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. needs-kind Indicates a PR lacks a `kind/foo` label and requires one. needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. area/apiserver sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. sig/cloud-provider Categorizes an issue or PR as relevant to SIG Cloud Provider. and removed needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. labels Oct 16, 2018
@k8s-ci-robot k8s-ci-robot requested review from gmarek and luxas October 16, 2018 14:51
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liggitt commented Oct 16, 2018

/kind bug

@k8s-ci-robot k8s-ci-robot added kind/bug Categorizes issue or PR as related to a bug. and removed needs-kind Indicates a PR lacks a `kind/foo` label and requires one. labels Oct 16, 2018
@liggitt liggitt force-pushed the self-sign-in-memory branch 2 times, most recently from 540b1ba to b087c65 Compare October 17, 2018 00:38
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sttts commented Oct 17, 2018

Looks good overall. One question.

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liggitt commented Oct 17, 2018

/retest

@liggitt liggitt force-pushed the self-sign-in-memory branch from b087c65 to b7160d4 Compare October 17, 2018 13:11
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liggitt commented Oct 17, 2018

@sttts comments addressed

@@ -282,15 +301,21 @@ func (s *SecureServingOptions) MaybeDefaultWithSelfSignedCerts(publicAddress str

if cert, key, err := certutil.GenerateSelfSignedCertKeyWithFixtures(publicAddress, alternateIPs, alternateDNS, s.ServerCert.FixtureDirectory); err != nil {
return fmt.Errorf("unable to generate self signed cert: %v", err)
} else {
} else if len(keyCert.CertFile) > 0 && len(keyCert.KeyFile) > 0 {
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can one be set and not the other?

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no, line 263 keeps us from getting here in that case.

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sttts commented Oct 23, 2018

/lgtm
/approve

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Oct 23, 2018
@liggitt liggitt added this to the v1.13 milestone Oct 23, 2018
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liggitt commented Oct 24, 2018

/assign @mikedanese @luxas
for controller manager approvals

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/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: liggitt, mikedanese, sttts

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Oct 30, 2018
@k8s-ci-robot k8s-ci-robot merged commit d196d63 into kubernetes:master Oct 30, 2018
@liggitt liggitt deleted the self-sign-in-memory branch November 1, 2018 04:49
dghubble added a commit to poseidon/terraform-render-bootstrap that referenced this pull request Dec 4, 2018
* Remove controller-manager empty dir mount added for v1.12
kubernetes/kubernetes#68973
* No longer required kubernetes/kubernetes#69884
dghubble added a commit to poseidon/terraform-render-bootstrap that referenced this pull request Dec 4, 2018
* Remove controller-manager empty dir mount added for v1.12
kubernetes/kubernetes#68973
* No longer required kubernetes/kubernetes#69884
dghubble added a commit to poseidon/terraform-render-bootstrap that referenced this pull request Dec 4, 2018
* Remove controller-manager empty dir mount added for v1.12
kubernetes/kubernetes#68973
* No longer required kubernetes/kubernetes#69884
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kube-controller-manager: error creating self-signed certificates, permission denied on v1.12.0-rc.2
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