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Merge pull request #13712 from Huawei-PaaS/add_doc_for_ubuntu_Cluster_upgrade

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Add docs for ubuntu kubernetes cluster upgrading
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Eric Tune 2015-09-23 16:50:08 -07:00
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docs/getting-started-guides/ubuntu.md
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@ -41,6 +41,7 @@ Kubernetes Deployment On Bare-metal Ubuntu Nodes
- [Test it out](#test-it-out)
- [Deploy addons](#deploy-addons)
- [Trouble shooting](#trouble-shooting)
- [Upgrading a Cluster](#upgrading-a-cluster)
## Introduction
@ -249,6 +250,51 @@ the latter one could start it again.
4. You can also customize your own settings in `/etc/default/{component_name}`.
### Upgrading a Cluster
If you already have a kubernetes cluster, and want to upgrade to a new version,
you can use following command in cluster/ directory to update the whole cluster or a specified node to a new version.
```console
$ KUBERNETES_PROVIDER=ubuntu ./kube-push.sh [-m|-n <node id>] <version>
```
It can be done for all components (by default), master(`-m`) or specified node(`-n`).
If the version is not specified, the script will try to use local binaries.You should ensure all the binaries are well prepared in path `cluster/ubuntu/binaries`.
```console
$ tree cluster/ubuntu/binaries
binaries/
├── kubectl
├── master
│   ├── etcd
│   ├── etcdctl
│   ├── flanneld
│   ├── kube-apiserver
│   ├── kube-controller-manager
│   └── kube-scheduler
└── minion
├── flanneld
├── kubelet
└── kube-proxy
```
Upgrading single node is experimental now. You can use following command to get a help.
```console
$ KUBERNETES_PROVIDER=ubuntu ./kube-push.sh -h
```
Some examples are as follows:
* upgrade master to version 1.0.5: `$ KUBERNETES_PROVIDER=ubuntu ./kube-push.sh -m 1.0.5`
* upgrade node 10.10.103.223 to version 1.0.5 : `$ KUBERNETES_PROVIDER=ubuntu ./kube-push.sh -n 10.10.103.223 1.0.5`
* upgrade master and all nodes to version 1.0.5: `$ KUBERNETES_PROVIDER=ubuntu ./kube-push.sh 1.0.5`
The script will not delete any resources of your cluster, it just replaces the binaries.
You can use `kubectl` command to check if the newly upgraded k8s is working correctly.
For example, use `$ kubectl get nodes` to see if all of your nodes are ready.Or refer to [test-it-out](ubuntu.md#test-it-out)
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