Downloading or Building Kubernet

• download
  在ubuntu上直接git clone https://github.com/kubernetes/kubernetes.git就可以了。
  由于防火墙等未知因素，git clone老是失败，最终采用直接在github，下载zip包，然后解压

• build
  cd kubernetes
make release
  如果你是小白的话，build的过程会让你安装docker
  docker的安装请参见Install

• 问题 1
  $ make release
  +++ [0728 15:46:56] Verifying Prerequisites....
  +++ [0728 15:47:05] Building Docker image kube-build:build-cf5c558a5d
  +++ Docker build command failed for kube-build:build-cf5c558a5d

  Sending build context to Docker daemon 33.26 MB
  Step 1 : FROM gcr.io/google_containers/kube-cross:v1.6.3-0
  Get https://gcr.io/v1/_ping: dial tcp: i/o timeout
  
  To retry manually, run:
  
  docker build -t kube-build:build-cf5c558a5d --pull=false /usr1/s00295316/kubernetes-master/_output/images/kube-build:build-cf5c558a5d
  
  !!! Error in build/../build/common.sh:535
    'return 1' exited with status 1
  Call stack:
    1: build/../build/common.sh:535 kube::build::build_image(...)
    2: build/release.sh:32 main(...)
  Exiting with status 1
  make: *** [release] Error 1
  

这个问题应该是由于代理没有设置好的缘故。可是我设置了两处代理，都还是不行
export http_proxy=http://usrname:pswd@proxy.com:port
export https_proxy=https://usrname:pswd@proxy.com:port
export ftp_proxy=ftp://usrname:pswd@proxy.com:port
export all_proxy=http://usrname:pswd@proxy.com:port
添加
export KUBERNETES_HTTPS_PROXY=https://usrname:pswd@proxy.com:port
export KUBERNETES_HTTP_PROXY=http://usrname:pswd@proxy.com:port
原来还要设置docker的代理.
ubuntu: /etc/defautl/docker
export http_proxy="http://usrname:pswd@proxy.com:port"
export https_proxy="https://usrname:pswd@proxy.com:port"
接着就会出现另一个问题：
~/kubernetes-master$ docker build -t kube-build:build-cf5c558a5d --pull=false /usr1/s00295316/kubernetes-master/_output/images/kube-build:build-cf5c558a5d Sending build context to Docker daemon 140.8 MB Step 1 : FROM gcr.io/google_containers/kube-cross:v1.6.3-0 Get https://gcr.io/v1/_ping: x509: certificate signed by unknown authority
需要在demon中添加参数--insecure-registry gcr.io
DOCKER_OPTS="$DOCKER_OPTS --insecure-registry gcr.io"
配置这些参数都需要重启
sudo service docker restart
或者
sudo service docker stop # to stop the service
sudo docker -d --insecure-registry gcr.io

• 问题2
  用git命令下载kubernetes代码时，有可能出现如下错误：
  unable to access 'https://github.com/kubernetes/kubernetes.git/': Failed connect to github.com:443;
  解决方案是：
  git config --global http.proxy http://username:psw@proxyhk.huawei.com:8080
• 问题3
  下载完之后 运行/kubernetes/build下的release.sh 如果是非root用户有可能出现如下错误：
  can't connect to docker daemon。
  解决方案是：
  在执行release.sh命令前加上sudo
  sudo ./relese.sh
• 问题4
  如果执行kube-up.sh后，验证某个minion失败，报错为minion节点的docker运行失败，则检查master和minion节点是否支持brctl命令，如果没有安装，执行如下命令进行安装。安装完后重新执行kube-up.sh,问题解决。
  apt-get install bridge-utils
• 问题5
  可能的原因是8080端口被占用，把占用8080端口的进程杀掉，问题解决。具体查看方式依照如下博客所述：
  https://github.com/kubernetes/kubernetes/issues/11893

官方guide

** 要求 **

1. Docker
   Mac OS X：可以使用docker-machine或者boot2docker.
   Note: 设置 boot2docker vm 至少有3GB的初始内存，否则会失败 (See:#11852)；不要从/tmp/中make quick-release。 (See: #14773)
   Linux with local Docker：instructions
2. Python
3. Google Cloud SDK (可选）

** 脚本 **

• run.sh： 在一个build docker容器中执行指令
  • run.sh make: Build just linux binaries in the container. Pass options and packages as necessary.
  • run.sh make cross: Build all binaries for all platforms
  • run.sh make test: Run all unit tests
  • run.sh make test-integration: Run integration test
  • run.sh make test-cmd: Run CLI tests

• copy-output.sh: This will copy the contents of _output/dockerized/bin from any remote Docker container to the local _output/dockerized/bin. Right now this is only necessary on Mac OS X with boot2docker when your git repo isn't under /Users.
• make-clean.sh: Clean out the contents of _output/dockerized and remove any local built container images.
• shell.sh: Drop into a bash shell in a build container with a snapshot of the current repo code.
• release.sh: Build everything, test it, and (optionally) upload the results to a GCS bucket.

自动下载并建立一个默认的cluster

# wget version
export KUBERNETES_PROVIDER=YOUR_PROVIDER; wget -q -O - https://get.k8s.io | bash
# curl version
export KUBERNETES_PROVIDER=YOUR_PROVIDER; curl -sS https://get.k8s.io | bash