提前把mongodb-linux-x86_64-rhel70-3.2.4.tgz放到和脚本相同目录下,然后把下复制到脚本里面，开始执行

#!/usr/bin/python

#-*- codinig: UTF-8 -*-

from __future__ import print_function

import os

import shutil

import tarfile

import subprocess

os.chdir('/root')

def execute_cmd(cmd):

    p=subprocess.Popen(cmd,

                        shell=True,

                        stdin=subprocess.PIPE,

                        stdout=subprocess.PIPE,

                        stderr=subprocess.PIPE)

    stdout,stdeer=p.communicate()

    if p.returncode!=0:

        return p.returncode,stdeer

    return p.returncode,stdout

def unpackage_monge(package,package_dir):

    unpackage_dir=os.path.splitext(package)[0]

    if os.path.exists(unpackage_dir):

        shutil.rmtree(unpackage_dir)

    if os.path.exists(package_dir):

        shutil.rmtree(package_dir)

    t=tarfile.open(package,'r:gz')

    t.extractall('.')

    shutil.move(unpackage_dir,package_dir)

def create_datadir(data_dir):

    if os.path.exists(data_dir):

        shutil.rmtree(data_dir)

    os.mkdir(data_dir)

def format_mongod_mommand(package_dir,data_dir,logfile):

    mongod=os.path.join(package_dir,'bin','mongod')

    mongod_format="""{0} --fork --dbpath {1} --logpath {2}"""

    return mongod_format.format(mongod,data_dir,logfile)

def start_mongod(cmd):

    returncode, out = execute_cmd(cmd)

    if returncode !=0:

        raise SystemExit('excete {0} error :{1}'.format(cmd,out))

    else:

        print('execute command {0} seccessful'.format(cmd))

def main():

    package='mongodb-linux-x86_64-rhel70-3.2.4.tgz'

    cur_dir=os.path.abspath('.')

    package_dir=os.path.join(cur_dir,'mongo')

    data_dir=os.path.join(cur_dir,'mongodata')

    logfile=os.path.join(data_dir,'mongod.log')

    if not os.path.exists(package):

        raise SystemExit('{0} not found'.format(package))

    unpackage_monge(package,package_dir)

    create_datadir(data_dir)

    start_mongod(format_mongod_mommand(package_dir,data_dir,logfile))

if __name__ == '__main__':

    main()