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Update documentation on CoreDNS (#10923)

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* update documentation on CoreDNS

* Update dns-custom-nameservers.md

Fixed nit noted in comments and cleaned up a few more things while I was in there. This whole topic needs a complete redo, but this PR is an iterative improvment. Thanks!
This commit is contained in:
Sandeep Rajan
2018-11-16 15:35:38 -05:00
committed by k8s-ci-robot
parent 2bfdd42aa7
commit 6f3b8cbd9b
5 changed files with 18 additions and 12 deletions
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content/en/docs/setup/independent/troubleshooting-kubeadm.md
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@@ -258,6 +258,9 @@ kubectl -n kube-system get deployment coredns -o yaml | \
kubectl apply -f -
```
Another cause for CoreDNS to have `CrashLoopBackOff` is when a CoreDNS Pod deployed in Kubernetes detects a loop. [A number of workarounds](https://github.com/coredns/coredns/tree/master/plugin/loop#troubleshooting-loops-in-kubernetes-clusters)
are available to avoid Kubernetes trying to restart the CoreDNS Pod every time CoreDNS detects the loop and exits.
{{< warning >}}
Disabling SELinux or setting `allowPrivilegeEscalation` to `true` can compromise
the security of your cluster.
content/en/docs/setup/turnkey/gce.md
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@@ -134,11 +134,11 @@ You'll see a list of pods that looks something like this (the name specifics wil
```shell
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-5f4fbb68df-mc8z8 1/1 Running 0 15m
kube-system fluentd-cloud-logging-kubernetes-minion-63uo 1/1 Running 0 14m
kube-system fluentd-cloud-logging-kubernetes-minion-c1n9 1/1 Running 0 14m
kube-system fluentd-cloud-logging-kubernetes-minion-c4og 1/1 Running 0 14m
kube-system fluentd-cloud-logging-kubernetes-minion-ngua 1/1 Running 0 14m
kube-system kube-dns-v5-7ztia 3/3 Running 0 15m
kube-system kube-ui-v1-curt1 1/1 Running 0 15m
kube-system monitoring-heapster-v5-ex4u3 1/1 Running 1 15m
kube-system monitoring-influx-grafana-v1-piled 2/2 Running 0 15m