debed6fa56
Automatic merge from submit-queue Adds docs for dns-horizontal-autoscaler and kube-dns Although we have separate docs on kubernetes.io, we should have a short description about the dns-horizontal-autoscaler addon in folder. Also updates kube-dns README with example command to scale kube-dns Deployment. This is needed because Addon Manager v6 has stricter reconcile behavior. @bowei @bprashanth @thockin |
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|---|---|---|
| .. | ||
| Makefile | ||
| README.md | ||
| skydns-rc.yaml.base | ||
| skydns-rc.yaml.in | ||
| skydns-rc.yaml.sed | ||
| skydns-svc.yaml.base | ||
| skydns-svc.yaml.in | ||
| skydns-svc.yaml.sed | ||
| transforms2salt.sed | ||
| transforms2sed.sed | ||
kube-dns
kube-dns schedules DNS Pods and Service on the cluster, other pods in cluster can use the DNS Service’s IP to resolve DNS names.
More details on http://kubernetes.io/docs/admin/dns/.
Manually scale kube-dns Deployment
kube-dns creates only one DNS Pod by default. If dns-horizontal-autoscaler is not enabled, you may need to manually scale kube-dns Deployment.
Please use below kubectl scale command to scale:
kubectl --namespace=kube-system scale deployment kube-dns --replicas=<NUM_YOU_WANT>
Do not use kubectl edit to modify kube-dns Deployment object if it is controlled by
Addon Manager. Otherwise the modifications will be clobbered,
in addition the replicas count for kube-dns Deployment will be reset to 1. See
Cluster add-ons README and #36411
for reference.
kube-dns Deployment and Service templates
This directory contains the base UNDERSCORE templates that can be used to generate the skydns-rc.yaml.in and skydns.rc.yaml.in needed in Salt format.
Due to a varied preference in templating language choices, the transform Makefile in this directory should be enhanced to generate all required formats from the base underscore templates.
NOTE WELL: Developers, when you add a parameter you should also update the various scripts that supply values for your new parameter. Here is one way you might find those scripts:
cd kubernetes
find [a-zA-Z0-9]* -type f -exec grep skydns-rc.yaml \{\} \; -print -exec echo \;
Base Template files
These are the authoritative base templates. Run 'make' to generate the Salt and Sed yaml templates from these.
skydns-rc.yaml.base skydns-svc.yaml.base
Generated Salt files
skydns-rc.yaml.in skydns-svc.yaml.in
Generated Sed files
skydns-rc.yaml.sed skydns-svc.yaml.sed