Polysh是一个交互式命令，可以批量对多服务器进行处理，也就是我们可以同时登录多台服务器，并在各台服务器上同时执行相同的操作，Polysh非常适合我们需要交互式处理的场景，比如同时批量执行fio测试脚本，批量修改服务器密码等。。。适用场景非常多
Polysh参数：
常用的参数：
--hosts-file 客户端IP地址列表
--password-file 客户端用户密码，每个一行
polysh-shale
Usage: /usr/local/bin/polysh (OPTIONS] HOSTS...
Control commands are prefixed by*:. Use help for the list
Options:
--version
-h, --help
--hosts-file=PILE
--Command= CMD
-ssh=SSH show program's version number and exit show this help message and exit read hostnames from given file, one per line command to execute
on the remote shells ssh command to use (exec ssh -oLogLevel=Quiet -t & (host)s exec bash --noprofile]
--user=USER remote user to log in as
--no-color disable colored hostnames (enabled]
--password-file=PILE read a password from the specified file. - is the tty.
--1og-file=LOG_FILE file to log each machine conversation (none]
--abort-errors abort if some shell fails to initialize (ignore]
--debug print debugging informat ion
Polysh示例：
hosts file && passwd file
polysh --ssh='exec ssh' --user=root --hosts-file=hosts --password-file=passwd
thanks~
