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Add support for running a nodelocal dns cache (#3861)

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* Add support for running a nodelocal dns cache

After encountering dns issues in a cluster I was recently working on I
noticed Kubernetes 1.13 introduced support for running a nodelocal dns
cache.

I believe this can usefull for more people.

https://github.com/kubernetes/kubernetes/commit/73b548db06c5e293533344c5b6171e955eac9ff1
https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/0030-nodelocal-dns-cache.md

* Add requested changes

* Add additional requested changes + documentation

* Add requested changes after review

* Replace incorrect variable
This commit is contained in:
Thomas Nys
2018-12-11 02:28:03 +01:00
committed by Kubernetes Prow Robot
parent 7b674e0607
commit 3e3ee0aeb1
12 changed files with 223 additions and 0 deletions
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inventory/sample/group_vars/k8s-cluster/k8s-cluster.yml
+2
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@@ -114,6 +114,8 @@ ndots: 2
dns_mode: coredns
# Set manual server if using a custom cluster DNS server
#manual_dns_server: 10.x.x.x
# Enable nodelocal dns cache
enable_nodelocaldns: False
# Can be docker_dns, host_resolvconf or none
resolvconf_mode: docker_dns