使用 fabric 在无外网的群集里面安装 py 包

@task
@parallel(10)
def install_redis():
cmd = """
export http_proxy="http://proxy_host_ip:3128"
export NO_PROXY="localhost,127.0.0.1"
easy_install -i http://pypi.douban.com/simple/ pip
pip install  -i http://pypi.douban.com/simple/ redis
"""
print cmd
run(cmd)