mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-21 16:09:55 +00:00
65 lines
1.9 KiB
Markdown
65 lines
1.9 KiB
Markdown
|
# 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.
|
|||
|
|
|
|||
|
|
* [Administrators guide](http://kubernetes.io/docs/admin/dns/)
|
|||
|
|
* [Code repository](http://www.github.com/kubernetes/dns)
|
|||
|
|
|
|||
|
|
## Manually scale kube-dns Deployment
|
|||
|
|
|
|||
|
|
kube-dns creates only one DNS Pod by default. If
|
|||
|
|
[dns-horizontal-autoscaler](../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](../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](../README.md) and
|
|||
|
|
[#36411](https://github.com/kubernetes/kubernetes/issues/36411) for reference.
|
|||
|
|
|
|||
|
|
## kube-dns addon templates
|
|||
|
|
|
|||
|
|
This directory contains the base UNDERSCORE templates that can be used to
|
|||
|
|
generate the kube-dns.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.
|
|||
|
|
|
|||
|
|
**N.B.**: 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 && git grep 'kube-dns.yaml'
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### Base Template files
|
|||
|
|
|
|||
|
|
These are the authoritative base templates.
|
|||
|
|
Run 'make' to generate the Salt and Sed yaml templates from these.
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
kube-dns.yaml.base
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### Generated Salt files
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
kube-dns.yaml.in
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### Generated Sed files
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
kube-dns.yaml.sed
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
[]()
|