Python is configured according to your needs hostname

#!/usr/bin/env python# _*_coding:utf-8 _*_ "If you want to run a batch configuration: Run this script with Ansible Ansible testserver  -m script -a  "chage_hostname.py"   "import osshell = "/sbin/ifconfig  -a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk  ' {print $2} ' |tr  -d  ' addr: '   #定义获取IP地址的shell命令res  = os.popen (Shell, ' R ', 0)   #执行shell命令, and return value IPADDR  = str (Res.read ())   #读取返回值, i.e. IP address str_ip = ipaddr.replace ('. ', '-')   #将IP地址中的 "." Replace with "-" hostnames =  ' ambari-%s '  % str_ip  #组成完整的计算机名os. environ[' new_name ']=str (hostnames   #将python变量可传递给shellos. System (' hostname  $new _name ')   #修改计算机名str_hosts  =  "%s %s"  %  (ipaddr,hostnames)   #组成 "Ip hostname" form, write/etc/hosts file os.environ[' ip_host ']=str (str_hosts )   #将python变量可传递给shellos. System (' rm -rf /etc/hosts ') os.system (' echo  $ip _host >>  /etc/hosts ') OS.SYstem ("echo  ' 127.0.0.1   localhost localhost.localdomain localhost4  Localhost4.localdomain4 '  >> /etc/hosts ") os.system (" echo  '::1          localhost localhost.localdomain localhost6  Localhost6.localdomain6 '  >> /etc/hosts ")

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Python is configured according to your needs hostname