whentimeslows/website
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

remove mentions of kube-dns in kubeadm docs

Browse Source
This commit is contained in:
Sandeep Rajan
2021-03-04 12:06:09 -05:00
parent a65f9ac6f4
commit 5fcc8b2961
9 changed files with 12 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files
content/en/docs/tasks/administer-cluster/coredns.md
+3 -23
View File
@@ -36,7 +36,7 @@ For manual deployment or replacement of kube-dns, see the documentation at the
In Kubernetes version 1.10 and later, you can also move to CoreDNS when you use `kubeadm` to upgrade
a cluster that is using `kube-dns`. In this case, `kubeadm` will generate the CoreDNS configuration
("Corefile") based upon the `kube-dns` ConfigMap, preserving configurations for federation,
("Corefile") based upon the `kube-dns` ConfigMap, preserving configurations for
stub domains, and upstream name server.
If you are moving from kube-dns to CoreDNS, make sure to set the `CoreDNS` feature gate to `true`
@@ -46,8 +46,7 @@ kubeadm upgrade apply v1.11.0 --feature-gates=CoreDNS=true
```
In Kubernetes version 1.13 and later the `CoreDNS` feature gate is removed and CoreDNS
is used by default. Follow the guide outlined [here](/docs/reference/setup-tools/kubeadm/kubeadm-init-phase#cmd-phase-addon) if you want
your upgraded cluster to use kube-dns.
is used by default.
In versions prior to 1.11 the Corefile will be **overwritten** by the one created during upgrade.
**You should save your existing ConfigMap if you have customized it.** You may re-apply your
@@ -56,26 +55,7 @@ customizations after the new ConfigMap is up and running.
If you are running CoreDNS in Kubernetes version 1.11 and later, during upgrade,
your existing Corefile will be retained.
### Installing kube-dns instead of CoreDNS with kubeadm
{{< note >}}
In Kubernetes 1.11, CoreDNS has graduated to General Availability (GA)
and is installed by default.
{{< /note >}}
{{< warning >}}
In Kubernetes 1.18, kube-dns usage with kubeadm has been deprecated and will be removed in a future version.
{{< /warning >}}
To install kube-dns on versions prior to 1.13, set the `CoreDNS` feature gate
value to `false`:
```
kubeadm init --feature-gates=CoreDNS=false
```
For versions 1.13 and later, follow the guide outlined [here](/docs/reference/setup-tools/kubeadm/kubeadm-init-phase#cmd-phase-addon).
In Kubernetes version 1.21, support for `kube-dns` is removed from kubeadm.
## Upgrading CoreDNS