【kubernetes】ubuntu14.04 64位搭建kubernetes过程

背景：

Kubernetes介绍：http://kubernetes.io/docs/getting-started-guides/

github地址：https://github.com/kubernetes/kubernetes

在ubuntu上安装文档官方地址：http://kubernetes.io/docs/getting-started-guides/ubuntu/

环境：

Master:
- Ubunut14.04
- 192.168.27.135(NAT) 　　　　　　　　
Minion1:
- Ubuntu14.04
- 192.168.27.136(NAT)
Minion2:
- Ubuntu14.04
- 192.168.27.137(NAT)

准备工作：

需要在三个节点上安装docker和ssh，安装ssh：

$ sudo apt-get install openssh-server

$ sudo service ssh start

安装docker:

sudo apt-get install docker-engine

安装Kubernetes：

1、在Master上，首先创建一个工作目录，执行：

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

2、下载完后，进入kubernetes目录，修改kubernetes/cluster/ubuntu/config-default.sh文件：

root@192.168.127.135 root@192.168.27.136 root@192.168.27.137

3、安装kubernetes：

$ cd  kubernetes/cluster
$ KUBERNETES_PROVIDER=ubuntu ./kube-up.sh

成功安装的截图如下：

访问页面：

遇到的各种坑：

1、重启master节点，如何恢复？

这个问题弄了我至少3小时才搞定，因为我是准备直接重新执行一遍上面步骤的第三步，也就是再执行一次kube-up.sh，然而我发现每次该脚本都会从github上下载etcd、flanneld和kubernetes包，这个包有1.4G大小，可想而知要耽误多少时间。然后我就只能慢慢找这段脚本在哪执行的，最后发现在kubernetes/cluster/ubuntu/下的download-release.sh，也就是下图中的文件。所以我就把文件的内容改了，改成下面代码中的样子，目的是不让它每次都下。随后呢，我的做法是把第一次成功安装的文件备份一下，也就是把kubernetes/cluster/ubuntu/binaries这个目录备份起来，然后直接拷到重启后的master的对应目录。然后再执行kube-up.sh，之后就OK啦！

#!/bin/bash

# Copyright  The Kubernetes Authors All rights reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# Download the etcd, flannel, and K8s binaries automatically and stored in binaries directory

# Run as root only

# author @resouer @WIZARD-CXY

set -e

#function cleanup {

  # cleanup work

  #rm -rf flannel* kubernetes* etcd* binaries

#}

#trap cleanup SIGHUP SIGINT SIGTERM

pushd $(dirname $)

mkdir -p binaries/master

mkdir -p binaries/minion

# flannel

FLANNEL_VERSION=${FLANNEL_VERSION:-"0.5.5"}

echo "Prepare flannel ${FLANNEL_VERSION} release ..."

grep -q "^${FLANNEL_VERSION}\$" binaries/.flannel >/dev/null || {

#  curl -L  https://github.com/coreos/flannel/releases/download/v${FLANNEL_VERSION}/flannel-${FLANNEL_VERSION}-linux-amd64.tar.gz -o flannel.tar.gz

#  tar xzf flannel.tar.gz

#  cp flannel-${FLANNEL_VERSION}/flanneld binaries/master

 # cp flannel-${FLANNEL_VERSION}/flanneld binaries/minion

  echo ${FLANNEL_VERSION} > binaries/.flannel

}

# ectd

ETCD_VERSION=${ETCD_VERSION:-"2.3.1"}

ETCD="etcd-v${ETCD_VERSION}-linux-amd64"

echo "Prepare etcd ${ETCD_VERSION} release ..."

grep -q "^${ETCD_VERSION}\$" binaries/.etcd >/dev/null || {

#  curl -L https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/${ETCD}.tar.gz -o etcd.tar.gz

#  tar xzf etcd.tar.gz

#  cp ${ETCD}/etcd ${ETCD}/etcdctl binaries/master

  echo ${ETCD_VERSION} > binaries/.etcd

}

function get_latest_version_number {

  local -r latest_url="https://storage.googleapis.com/kubernetes-release/release/stable.txt"

  if [[ $(which wget) ]]; then

    wget -qO- ${latest_url}

  elif [[ $(which curl) ]]; then

    curl -Ss ${latest_url}

  else

    echo "Couldn't find curl or wget.  Bailing out." >&

    exit

  fi

}

KUBE_VERSION=$(get_latest_version_number | sed 's/^v//')

# k8s

echo "Prepare kubernetes ${KUBE_VERSION} release ..."

grep -q "^${KUBE_VERSION}\$" binaries/.kubernetes >/dev/null || {

#  curl -L https://github.com/kubernetes/kubernetes/releases/download/v${KUBE_VERSION}/kubernetes.tar.gz -o kubernetes.tar.gz

#  tar xzf kubernetes.tar.gz

#  pushd kubernetes/server

#  tar xzf kubernetes-server-linux-amd64.tar.gz

#  popd

#  cp kubernetes/server/kubernetes/server/bin/kube-apiserver \

#     kubernetes/server/kubernetes/server/bin/kube-controller-manager \

#     kubernetes/server/kubernetes/server/bin/kube-scheduler binaries/master

#  cp kubernetes/server/kubernetes/server/bin/kubelet \

#     kubernetes/server/kubernetes/server/bin/kube-proxy binaries/minion

#  cp kubernetes/server/kubernetes/server/bin/kubectl binaries/

  echo ${KUBE_VERSION} > binaries/.kubernetes

}

#rm -rf flannel* kubernetes* etcd*

echo "Done! All your binaries locate in kubernetes/cluster/ubuntu/binaries directory"

popd