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account for istiod scenario when troubleshooting mutatingwebhooks (#7188) 

Force merge because PR is only blocked because of flaky netlify failure.
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Tariq Ibrahim 2020-04-30 08:05:16 -07:00 committed by GitHub
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content/en/docs/ops/common-problems/injection/index.md
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@ -132,7 +132,7 @@ typically be captured in the event log.
{{< text plain >}} {{< text plain >}}
Warning FailedCreate 3m (x17 over 8m) replicaset-controller Error creating: Internal error occurred: \ Warning FailedCreate 3m (x17 over 8m) replicaset-controller Error creating: Internal error occurred: \
failed calling admission webhook "sidecar-injector.istio.io": Post https://istio-sidecar-injector.istio-system.svc:443/inject: \ failed calling admission webhook "sidecar-injector.istio.io": Post https://istiod.istio-system.svc:443/inject: \
x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying \ x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying \
to verify candidate authority certificate "Kubernetes.cluster.local") to verify candidate authority certificate "Kubernetes.cluster.local")
{{< /text >}} {{< /text >}}
@ -141,22 +141,22 @@ Warning FailedCreate 3m (x17 over 8m) replicaset-controller Error creating:
caused by an empty `caBundle` in the webhook configuration. caused by an empty `caBundle` in the webhook configuration.
Verify the `caBundle` in the `mutatingwebhookconfiguration` matches the Verify the `caBundle` in the `mutatingwebhookconfiguration` matches the
root certificate mounted in the `istio-sidecar-injector` pod. root certificate mounted in the `istiod` pod.
{{< text bash >}} {{< text bash >}}
$ kubectl get mutatingwebhookconfiguration istio-sidecar-injector -o yaml -o jsonpath='{.webhooks[0].clientConfig.caBundle}' | md5sum $ kubectl get mutatingwebhookconfiguration istio-sidecar-injector -o yaml -o jsonpath='{.webhooks[0].clientConfig.caBundle}' | md5sum
4b95d2ba22ce8971c7c92084da31faf0 - 4b95d2ba22ce8971c7c92084da31faf0 -
$ kubectl -n istio-system get secret istio.istio-sidecar-injector-service-account -o jsonpath='{.data.root-cert\.pem}' | md5sum $ kubectl -n istio-system get secret istiod-service-account-token -o jsonpath='{.data.root-cert\.pem}' | md5sum
4b95d2ba22ce8971c7c92084da31faf0 - 4b95d2ba22ce8971c7c92084da31faf0 -
{{< /text >}} {{< /text >}}
The CA certificate should match. If they do not, restart the The CA certificate should match. If they do not, restart the
sidecar-injector pods. istiod pods.
{{< text bash >}} {{< text bash >}}
$ kubectl -n istio-system patch deployment istio-sidecar-injector \ $ kubectl -n istio-system patch deployment istiod \
-p "{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"date\":\"`date +'%s'`\"}}}}}" -p "{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"date\":\"`date +'%s'`\"}}}}}"
deployment.extensions "istio-sidecar-injector" patched deployment.extensions "istiod" patched
{{< /text >}} {{< /text >}}
### `no such hosts` or `no endpoints available` errors in deployment status ### `no such hosts` or `no endpoints available` errors in deployment status