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remove duplicate paragraph in "kubeadm Setup Tool Reference Guide" (#4260)

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* remove duplicate paragraph

* remove duplicate paragraph
This commit is contained in:
Fabrizio Pandini
2017-07-05 20:44:43 +02:00
committed by Andrew Chen
parent ce830b2867
commit 30fd81db49
1 changed files with 0 additions and 42 deletions
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docs/admin/kubeadm.md
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@@ -485,23 +485,6 @@ EOF
Now `kubelet` is ready to use the specified CRI runtime, and you can continue with `kubeadm init` and `kubeadm join` workflow to deploy Kubernetes cluster. Now `kubelet` is ready to use the specified CRI runtime, and you can continue with `kubeadm init` and `kubeadm join` workflow to deploy Kubernetes cluster.
## Using custom certificates
By default kubeadm will generate all the certificates needed for a cluster to run.
You can override this behaviour by providing your own certificates.
To do so, you must place them in whatever directory is specified by the
`--cert-dir` flag or `CertificatesDir` configuration file key. By default this
is `/etc/kubernetes/pki`.
If a given certificate and private key pair both exist, kubeadm will skip the
generation step and those files will be validated and used for the prescribed
use-case.
This means you can, for example, prepopulate `/etc/kubernetes/pki/ca.crt`
and `/etc/kubernetes/pki/ca.key` with an existing CA, which then will be used
for signing the rest of the certs.
## Running kubeadm without an internet connection ## Running kubeadm without an internet connection
All of the control plane components run in Pods started by the kubelet and All of the control plane components run in Pods started by the kubelet and
@@ -673,31 +656,6 @@ export no_proxy="localhost,127.0.0.1,localaddress,.localdomain.com,example.com,1
Remember to change `proxy_ip` and add a kube master node IP address to Remember to change `proxy_ip` and add a kube master node IP address to
`no_proxy`. `no_proxy`.
## Use Kubeadm with other CRI runtimes
Since [Kubernetes 1.6 release](https://git.k8s.io/kubernetes/CHANGELOG.md#node-components-1), Kubernetes container runtimes have been transferred to using CRI by default. Currently, the build-in container runtime is Docker which is enabled by build-in `dockershim` in `kubelet`.
Using other CRI based runtimes with kubeadm is very simple, and currently supported runtimes are:
- [cri-o](https://github.com/kubernetes-incubator/cri-o)
- [frakti](https://github.com/kubernetes/frakti)
- [rkt](https://github.com/kubernetes-incubator/rktlet)
After you have successfully installed `kubeadm` and `kubelet`, please follow these two steps:
1. Install runtime shim on every node. You will need to follow the installation document in the runtime shim project listing above.
2. Configure kubelet to use remote CRI runtime. Please remember to change `RUNTIME_ENDPOINT` to your own value like `/var/run/{your_runtime}.sock`:
```shell
$ cat > /etc/systemd/system/kubelet.service.d/20-cri.conf <<EOF
Environment="KUBELET_EXTRA_ARGS=--container-runtime=remote --container-runtime-endpoint=$RUNTIME_ENDPOINT --feature-gates=AllAlpha=true"
EOF
$ systemctl daemon-reload
```
Now `kubelet` is ready to use the specified CRI runtime, and you can continue with `kubeadm init` and `kubeadm join` workflow to deploy Kubernetes cluster.
## Using custom certificates ## Using custom certificates
By default kubeadm will generate all the certificates needed for a cluster to run. By default kubeadm will generate all the certificates needed for a cluster to run.