2016-12-07 19:36:08 +00:00
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# kube-dns
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kube-dns schedules DNS Pods and Service on the cluster, other pods in cluster can
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use the DNS Service’s IP to resolve DNS names.
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More details on http://kubernetes.io/docs/admin/dns/.
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## Manually scale kube-dns Deployment
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kube-dns creates only one DNS Pod by default. If
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[dns-horizontal-autoscaler](../dns-horizontal-autoscaler/)
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is not enabled, you may need to manually scale kube-dns Deployment.
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Please use below `kubectl scale` command to scale:
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```
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kubectl --namespace=kube-system scale deployment kube-dns --replicas=<NUM_YOU_WANT>
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```
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Do not use `kubectl edit` to modify kube-dns Deployment object if it is controlled by
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[Addon Manager](../addon-manager/). Otherwise the modifications will be clobbered,
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in addition the replicas count for kube-dns Deployment will be reset to 1. See
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[Cluster add-ons README](../README.md) and [#36411](https://github.com/kubernetes/kubernetes/issues/36411)
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for reference.
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## kube-dns Deployment and Service templates
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2016-05-27 19:05:24 +00:00
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This directory contains the base UNDERSCORE templates that can be used
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to generate the skydns-rc.yaml.in and skydns.rc.yaml.in needed in Salt format.
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Due to a varied preference in templating language choices, the transform
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Makefile in this directory should be enhanced to generate all required
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formats from the base underscore templates.
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2016-06-25 02:29:40 +00:00
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**NOTE WELL**: Developers, when you add a parameter you should also
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update the various scripts that supply values for your new parameter.
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Here is one way you might find those scripts:
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```
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cd kubernetes
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find [a-zA-Z0-9]* -type f -exec grep skydns-rc.yaml \{\} \; -print -exec echo \;
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```
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2016-12-07 19:36:08 +00:00
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### Base Template files
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2016-05-27 19:05:24 +00:00
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These are the authoritative base templates.
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Run 'make' to generate the Salt and Sed yaml templates from these.
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skydns-rc.yaml.base
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skydns-svc.yaml.base
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2016-12-07 19:36:08 +00:00
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### Generated Salt files
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2016-05-27 19:05:24 +00:00
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skydns-rc.yaml.in
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skydns-svc.yaml.in
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2016-12-07 19:36:08 +00:00
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### Generated Sed files
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2016-05-27 19:05:24 +00:00
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skydns-rc.yaml.sed
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skydns-svc.yaml.sed
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2016-07-08 18:29:08 +00:00
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[]()
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