Linux批量管理服务器小工具--PSSH
一、简介
pssh -- parallel ssh program
pssh is a program for executing ssh in parallel on a number of hosts. It provides features such as sending input to all of the processes, passing a password to ssh, saving output to files, and timing out.
简单理解就是,可以通过ssh,去并行操作远程管理的服务器。
建议,最好可以免密码登录到所有远程管理的服务器,免去输入密码的麻烦。
二、安装
网上有很多都是关于pssh的源码安装,我就不介绍了。下面介绍我的安装过程,很简单:
服务器操作系统:Centos 6.5 x64,本身yum源,可以直接安装 pssh。
# yum -y install pssh
三、用法及选项
pssh [options ...] comand ...
options:
-h host_file Read hosts from the given host_file. 格式为[user@]host[:port],默认是user为root,port为22,可省略
-H host host为[user@]host[:port],默认是user为root,port为22,可省略。可以后面接多个host
-l user 指定默认访问的用户
-t timeout 指定超时时间,单位为秒
-o outdir 指定标准输出信息的保存路径,注意是路径,不是文件
-i 显示标准输出和标准错误信息到终端
Command:shell脚本或者是linux的操作命令
四、示例(man手册提供)
Connect to host1 and host2, and print "hello, world" from each:
pssh -i -H "host1 host2" echo "hello, world"
Print "hello, world" from each host specified in the file hosts.txt:
pssh -i -h hosts.txt echo "hello, world"
Run a command as root with a prompt for the root password:
pssh -i -h hosts.txt -A -l root echo hi
Run a long command without timing out:
pssh -i -h hosts.txt -t 0 sleep 10000
五、实际工作运用
1.批量升级服务器的项目
pssh -h host_file -o out_start_log_directory-l user "export BASH_ENV=/etc/profile;项目升级脚本.sh"