用于大规模集群部署，在多台机器上同时执行脚本命令和拷贝数据。十分方便。国内可以下载的是老版本的2.26，现在已经更新到2.29，我提供的从2.26~2.29版本都有，大家可以根据自己的情况下载。

Pdsh is a high-performance, parallel remote shell utility. It has built-in, thread-safe clients for Berkeley and Kerberos V4 rsh, and can call SSH externally (though with reduced performance). Pdsh uses a "sliding window" parallel algorithm to conserve socket resources on the initiating node and to allow progress to continue while timeouts occur on some connections. Pdsh is similar to DSH, part of the IBM PSSP software offering, but offers improved performance and handling of error conditions. It runs on a variety of platforms (including as a replacement for DSH on AIX/PSSP), but is primarily developed on Linux. Recently, pdsh has been given the ability to run MPI jobs on the Quadrics Elan3 interconnect under Linux. The binary RPMs provided for download do not provide this functionality; if you wish to use this, consult the source tarball or e-mail the author for more information. Recent versions of pdsh may be downloaded from the LLNL public FTP site at ftp://ftp.llnl.gov/pub/linux/pdsh/

centos 7 pdsh rpm 安装包

yum install pdsh 不支持的话，通过安装包安装 pdsh 安装包及教程