Public bug reported:
On Kubernetes deployments with cert_manager_api enabled, the certificate
container fails to come up because there are five duplicate public
certificates in /etc/kubernetes/certs/ca.crt, this causes the service to
crash:
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 bash[153677]: I0430
23:44:21.416326 1 job_controller.go:144] Starting job controller
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 bash[153677]: I0430
23:44:21.416470 1 shared_informer.go:223] Waiting for caches to sync for
job
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 bash[153677]: I0430
23:44:21.429543 1 dynamic_serving_content.go:111] Loaded a new cert/key
pair for
"csr-controller::/etc/kubernetes/certs/ca.crt::/etc/kubernetes/certs/ca.key"
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 bash[153677]: E0430
23:44:21.430347 1 controllermanager.go:521] Error starting "csrsigning"
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 bash[153677]: F0430
23:44:21.430532 1 controllermanager.go:235] error starting controllers:
failed to start certificate controller: error reading CA cert file
"csr-controller::/etc/kubernetes/certs/ca.crt::/etc/kubernetes/certs/ca.key":
expected 1 certificate, found 5
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 podman[153677]: 2021-04-30
23:44:21.470875534 +0000 UTC m=+49.221008858 container died
df7295074c1b7cbef19a79e6c8741b9dfbcb4fd608863978fb5924de8946ba05
(image=k8s.gcr.io/hyperkube:v1.18.2, name=kube-controller-manager)
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 systemd[1]:
kube-controller-manager.service: Main process exited, code=exited,
status=255/EXCEPTION
Apr 30 23:44:21 k8s-prod-24e2ug52zqb4-master-0 systemd[1]:
kube-controller-manager.service: Failed with result 'exit-code'.
Apr 30 23:44:31 k8s-prod-24e2ug52zqb4-master-0 systemd[1]:
kube-controller-manager.service: Scheduled restart job, restart counter is at
456.
** Affects: magnum (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1926817
Title:
kube-controller-manager crashes due to 5 duplicate certs in ca.crt
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