自动化运维之PSSH

1.PSSH简介

PSSH提供OpenSSH和相关工具的并行版本。包括pssh,pscp,prsync,pnuke和pslurp。该项目包括psshlib,可以在自定义应用程序中使用。
pssh是python写的可以并发在多台机器上批量执行命令的工具,它的用法可以媲美ansible的一些简单用法,执行起来速度比ansible快它支持文件并行复制,远程命令执行,杀掉远程主机上的进程等等。杀手锏是文件并行复制,,当进行再远程主机批量上传下载的时候,最好使用它。
项目地址: https://code.google.com/archive/p/parallel-ssh/
图片.png | center | 747x367

2.PSSH使用

2.1 安装PSSH

前提条件:注意需要安装 python 2.4 或以上版本

wget https://clsn.io/files/pssh/pssh-2.3.1.tar.gz
tar zxf pssh-2.3.1.tar.gz
cd pssh-2.3.1
python setup.py install

安装过程

[root@clsn.io /opt/pssh-2.3.1] 
#python setup.py install
running install
running build
running build_py
creating build
creating build/lib
creating build/lib/psshlib
copying psshlib/task.py -> build/lib/psshlib
copying psshlib/askpass_server.py -> build/lib/psshlib
copying psshlib/__init__.py -> build/lib/psshlib
copying psshlib/cli.py -> build/lib/psshlib
copying psshlib/psshutil.py -> build/lib/psshlib
copying psshlib/manager.py -> build/lib/psshlib
copying psshlib/askpass_client.py -> build/lib/psshlib
copying psshlib/version.py -> build/lib/psshlib
copying psshlib/color.py -> build/lib/psshlib
running build_scripts
creating build/scripts-2.6
copying and adjusting bin/pssh -> build/scripts-2.6
copying and adjusting bin/pnuke -> build/scripts-2.6
copying and adjusting bin/prsync -> build/scripts-2.6
copying and adjusting bin/pslurp -> build/scripts-2.6
copying and adjusting bin/pscp -> build/scripts-2.6
copying and adjusting bin/pssh-askpass -> build/scripts-2.6
changing mode of build/scripts-2.6/pssh from 644 to 755
changing mode of build/scripts-2.6/pnuke from 644 to 755
changing mode of build/scripts-2.6/prsync from 644 to 755
changing mode of build/scripts-2.6/pslurp from 644 to 755
changing mode of build/scripts-2.6/pscp from 644 to 755
changing mode of build/scripts-2.6/pssh-askpass from 644 to 755
running install_lib
creating /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/task.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/askpass_server.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/__init__.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/cli.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/psshutil.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/manager.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/askpass_client.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/version.py -> /usr/lib/python2.6/site-packages/psshlib
copying build/lib/psshlib/color.py -> /usr/lib/python2.6/site-packages/psshlib
byte-compiling /usr/lib/python2.6/site-packages/psshlib/task.py to task.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/askpass_server.py to askpass_server.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/__init__.py to __init__.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/cli.py to cli.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/psshutil.py to psshutil.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/manager.py to manager.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/askpass_client.py to askpass_client.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/version.py to version.pyc
byte-compiling /usr/lib/python2.6/site-packages/psshlib/color.py to color.pyc
running install_scripts
copying build/scripts-2.6/pscp -> /usr/bin
copying build/scripts-2.6/prsync -> /usr/bin
copying build/scripts-2.6/pnuke -> /usr/bin
copying build/scripts-2.6/pssh -> /usr/bin
copying build/scripts-2.6/pssh-askpass -> /usr/bin
copying build/scripts-2.6/pslurp -> /usr/bin
changing mode of /usr/bin/pscp to 755
changing mode of /usr/bin/prsync to 755
changing mode of /usr/bin/pnuke to 755
changing mode of /usr/bin/pssh to 755
changing mode of /usr/bin/pssh-askpass to 755
changing mode of /usr/bin/pslurp to 755
running install_data
creating /usr/man
creating /usr/man/man1
copying man/man1/pssh.1 -> /usr/man/man1
copying man/man1/pscp.1 -> /usr/man/man1
copying man/man1/prsync.1 -> /usr/man/man1
copying man/man1/pslurp.1 -> /usr/man/man1
copying man/man1/pnuke.1 -> /usr/man/man1
running install_egg_info
Writing /usr/lib/python2.6/site-packages/pssh-2.3.1-py2.6.egg-info

2.2 安装完成

使用yum安装后,只能使用pssh,但是编译安装后会包括其他命令也安装了(pscp prsync pnuke pslurp)
pssh:在远程多台主机上并行运行命令

Example: pssh -h hosts.txt -l irb2 -o /tmp/foo uptime

pscp :把文件并行复制到多台远程主机上

Example: pscp -h hosts.txt -l irb2 foo.txt /home/irb2/foo.txt

prsync:使用rsync协议本地文件同步到远程多台主机上。

Example: prsync -r -h hosts.txt -l irb2 foo /home/irb2/foo

pnuke:在远程多台主机上并行killall某一进程

Example: pnuke -h hosts.txt -l irb2 java

pslurp:把文件从远程多台主机上复制到本地主机上

Example: pslurp -h hosts.txt -L /tmp/outdir -l irb2
/home/irb2/foo.txt foo.txt

2.3 pssh参数说明

-h HOST_FILE 后边跟远程主机列表(ip)
-H HOST_STRING 后边跟远程主机名或者ip地址
-l USER 指定远程主机的用户名-p PAR 指定pssh最大的并行线程数。
-o 将输出的内容重定向到一个指定的文件中
-O 指定ssh参数的具体配置
-e 将执行错误重定向到一个指定的文件中
-t 设定命令执行超时时间
-x 传递ssh命令的一些参数
-i 在远程主机上执行命令完成后显示标准输出和标准错误
-P 在执行远程命令时,输出执行结果

2.4 其他常用的方法

pssh使用帮助

pssh --help

pssh查看所有服务器的uptime

    -h list 指定了执行命令的机器列表
    -A表示提示输入密码(如果机器都是ssh key打通的则无需加-A)
pssh -i -A -h list 'uptime'

使用pscp向一堆机器分发文件

pscp -h list  localfile   remote_dir

从一堆机器中拷贝文件到中心机器

pslurp -h list /etc/hosts local_dir

2.5 常见问题

如果你遇到这样的错误:

IOError: [Errno 4] Interrupted system call

建议升级python版本到python2.7

3.附录

3.1 pssh CLSN站点镜像地址

本站将pssh软件包镜像到本地,以防丢失,有需求的可以执行下载,下载后注意校验MD5值。

File
Summary + Labels
Uploaded
Size
PSSH 2.3.1 Source
Feb 3, 2012
22.88KB
PSSH 2.3 Source
Jan 25, 2012
21.62KB
PSSH 2.2.2 Source
Feb 3, 2011
20.94KB
PSSH 2.2.1 Source
Jan 27, 2011
20.88KB
PSSH 2.2 Source
Jan 27, 2011
20.84KB
PSSH 2.1.1 Source
Mar 5, 2010
17.94KB
PSSH 2.1 Source
Feb 26, 2010
17.65KB
PSSH 2.0 Source
Oct 21, 2009
15.03KB

3.2 pssh GOOGLE源

File Summary + Labels Uploaded Size
pssh-2.3.1.tar.gz​ PSSH 2.3.1 Source Feb 3, 2012 22.88KB
​pssh-2.3.tar.gz​ PSSH 2.3 Source Jan 25, 2012 21.62KB
​pssh-2.2.2.tar.gz​ PSSH 2.2.2 Source Feb 3, 2011 20.94KB
​pssh-2.2.1.tar.gz​ PSSH 2.2.1 Source Jan 27, 2011 20.88KB
pssh-2.2.tar.gz​ PSSH 2.2 Source Jan 27, 2011 20.84KB
​pssh-2.1.1.tar.gz​ PSSH 2.1.1 Source Mar 5, 2010 17.94KB
​pssh-2.1.tar.gz​ PSSH 2.1 Source Feb 26, 2010 17.65KB
​pssh-2.0.tar.gz​ PSSH 2.0 Source Oct 21, 2009 15.03KB

3.3 文件包MD5值

下载完成后务必校验MD5值

MD5值 文件名
dbdbfda5681b82d4c64abdb3668e88bc pssh-2.3.tar.gz
53e70d53064f658bf8f44880340e8e5c pssh-2.3.1.tar.gz
689207677b260a7e4178174295b1389e pssh-2.2.tar.gz
865305ae39647884bc54a42e9f9554bb pssh-2.2.2.tar.gz
f7583259976ef64bf3cae957a0b66e41 pssh-2.2.1.tar.gz
725f902bb7e128cc7aa1322551f7ca37 pssh-2.1.tar.gz
4b355966da91850ac530f035f7404cd5 pssh-2.1.1.tar.gz
07474f9f9dbefedc809e997f04e1dee5 pssh-2.0.tar.gz

4.参考文献

https://code.google.com/archive/p/parallel-ssh/
http://opstool.com/article/266
https://www.cnblogs.com/Dicky-Zhang/p/5988415.html
https://help.aliyun.com/knowledge_detail/38835.html

posted @ 2019-01-01 21:16 惨绿少年 阅读(...) 评论(...) 编辑 收藏