给基于bosh安装的cloudfoundry添加python支持

zuier

　　前言:

      最近由于项目需要,建立了一个基于cloudfoundry的PaaS云,由于基于bosh安装的cloudfoundry官方代码中未提供对python的支持,所以就必须自己实现了,也就有了本文, 至于使用Django的用户,请参照添加python的方法添加Django.


  1.在blobstore中添加python的安装包

      这里,我选择了建立一个本地的simple_blobstore_proxy.
      code: https://github.com/yudai/simple_blobstore_proxy
     启动simple_blobstore_proxy:

bundle install
bundle exec ./bin/simple_blobstore_server
　　向本地blobstore中添加python的安装包,执行以下脚本以完成添加

require 'base64'
require 'httpclient'
require 'multi_json'
require "atmos"
require "uri"
file_path = '/Users/leon/cf-release/final_builds/packages/python/1/python/python-2.7.4.tgz' #修改成你的文件path
SHARE_URL_EXP = '1893484800'
@atmos_options = {:unsupported => true}
@atmos_options[:uid] = 'bb6a0c89ef4048a8a0f814e25385d1c5/user1'
@atmos_options[:url] = 'http://10.0.0.211:9999'
@atmos_options[:secret] = 'secret'
@endpoint = 'http://10.0.0.211:9999'
@bucket = ''
@client = HTTPClient.new
@bucket = @options && @options[:bucket] || "resources"
@headers = {}
user = 'admin'
password = 'admin'
if user && password
@headers["Authorization"] = "Basic " + Base64.encode64("#{user}:#{password}").strip
end
def url(id=nil)
["#{@endpoint}/#{@bucket}", id].compact.join("/")
end
def create_file(id, file)
@client.post(url(id), {:content => file}, @headers).content
end
def encode_object_id(object_id)
hash_string = "GET\n/rest/objects/#{object_id}\n#{@atmos_options[:uid]}\n#{SHARE_URL_EXP}"
secret = Base64.decode64(@atmos_options[:secret])
sig = HMAC::SHA1.digest(secret, hash_string)
signature = Base64.encode64(sig.to_s).chomp
json = MultiJson.encode({:oid => object_id, :sig => signature})
URI::escape(Base64.encode64(json))
end
file = File.open(file_path,'r:utf-8')
oid = create_file(nil, file)
puts  oid
puts  Digest::SHA1.file(file_path).hexdigest
puts  file.size

　　

2.修改本地cf的final.yml使用本地blobstore

---
final_name: appcloud
min_cli_version: 1.0.3
blobstore:
provider: simple
options:
endpoint: http://10.0.0.201:9999  #这里填写simple_blobstore_server的IP
blobstore_options: deprecated

　　创建private.yml   

---
blobstore:
simple:
user: admin
password: admin
　　blob.yml中添加

python/python-2.7.4.tgz:
object_id: f6ffff96-a78a-4bd2-b86d-45b7e28e73e0
sha: 2283858b832fc391b8e96bb600e0b39e52ae97bd
size: 14489063
　　cloud_controller中添加python
   cf-release/jobs/cloud_controller/templates/runtimes.yml

---
python27:
description: Python 2.7.4
version: 2.7.4
executable: /var/vcap/packages/dea_python27/bin/python2.7
staging: /var/vcap/packages/ruby/bin/ruby stage
version_output: 2.7.4
version_flag: "python -c 'import platform; print platform.python_version()'
environment:
PATH: /var/vcap/packages/ruby/bin:/var/vcap/packages/dea_python27/bin:/var/vcap/packages/imagemagick/bin:$PATH
LD_LIBRARY_PATH: '/var/vcap/packages/mysqlclient/lib/mysql:/var/vcap/packages/sqlite/lib:/var/vcap/packages/libpq/lib:/var/vcap/packages/imagemagick/lib:$LD_LIBRARY_PATH'
status:
name: current
series: python27
category: python

　　cf-release/jobs/cloud_controller/spec

- dea_python27
　　cf-release/jobs/dea/spec

- dea_python27
　　cf-release/packages中添加dea_python27目录
      dea_python27目录中创建文件packaging , spec   
    packaging

# abort script on any command that exit with a non zero value
set -e
tar xzf python/python-2.7.4.tgz
(
cd Python-2.7.4
./configure --prefix=${BOSH_INSTALL_TARGET}
make
make install
)
　　spec

---
name: dea_python27
dependencies:
files:
- python/python-2.7.4.tgz

　　
修改src
       cf-release/src/dea/config/dea.yml中添加   

python27:
executable: /var/vcap/packages/dea_python27/bin/python2.7#python
version: 2.7.4
version_flag: python -c 'import platform; print platform.python_version()'
environment:

　　4.创建修改后的release,上传,部署

bosh create release –force
bosh upload release dev_releases/envcloud-131.1.yml
bosh deployment new-cf.yml
bosh deploy