在ubuntu上安装kubernetes

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本文介绍了如何在Ubuntu 14.04环境下安装Kubernetes，包括所需的Docker和Go环境，以及如何启动集群和容器的步骤。

安装环境：

Linux (自用ubuntu14.04)
Docker 1.3+
go 1.3+
etcd

安装

从github上下载源码

$ git clone https://github.com/kubernetes/kubernetes.git
$ cd kubernetes

有两种安装方法，二选其一，前者方便快捷，后者因要运行测试等，花费时间较长。
1.Build just linux binaries in the container. Pass options and packages as necessary
$ hack/build-go.sh
2.Build everything, test it, and (optionally) upload the results to a GCS bucket
$ build/release.sh

$ cp _output/dockerized/bin/linux/amd64/kube* /usr/bin
查看安装情况
$ kubectl version
提示
[root@root]# Client Version: version.Info{Major:"1", Minor:"2+", GitVersion:"v1.2.0-alpha.8.693+5b415a7aede533", GitCommit:"5b415a7aede5338595b06e4f4625736b18c185e3", GitTreeState:"clean"}
[root@root]# error: couldn't read version from server: Get http://localhost:8080/api: dial tcp 127.0.0.1:8080: connection refused
安装成功，只是没启动cluster

Starting the cluster

$ cd kubernetes
$ hack/local-up-cluster.sh

之后你在运行kubectl version

[root@root]# Client Version: version.Info{Major:"1", Minor:"2+", GitVersion:"v1.2.0-alpha.8.693+5b415a7aede533", GitCommit:"5b415a7aede5338595b06e4f4625736b18c185e3", GitTreeState:"clean"}
[root@root]# Server Version: version.Info{Major:"1", Minor:"2+", GitVersion:"v1.2.0-alpha.8.693+5b415a7aede533", GitCommit:"5b415a7aede5338595b06e4f4625736b18c185e3", GitTreeState:"clean"}

启动一个容器

$ cluster/kubectl.sh get pods
$ cluster/kubectl.sh get services
$ cluster/kubectl.sh get replicationcontrollers
$ cluster/kubectl.sh run my-nginx --image=nginx --replicas=2 --port=80

## begin wait for provision to complete, you can monitor the docker pull by opening a new terminal
  $ sudo docker images
## you should see it pulling the nginx image, once the above command returns it
  $ sudo docker ps
## you should see your container running!
  $ exit
## end wait