Polysh命令实现多日志查询的方法示例

一、Polysh简介

Polysh 是一个交互式命令,可以在一台服务器上批量的对一批服务器进行处理,运行交互式命令。Polysh可以同时登录多个远程主机,而不需要通过relay一台一台的登录,并执行相同的指令,方便了问题的排查和定位,大大减少了我们的工作量。

  Polysh is a tool to aggregate several remote shells into one. It is used to launch an interactive remote shell on many machines at once. It is written in Python and requires Python ≥ 2.4.

注: 官方解释:Polysh 是一个由几个远程脚本集合而成的工具,它被用于在许多服务器上运行一个交互式的远程脚本,由 Python 编写,最低要求为 Python 2.4 。

二、polysh安装

通过relay登录staging机器,执行如下命令安装polysh。安装目录为用户目录: /opt/hl/。

1.已安装python的安装

  wget wget http://guichaz.free.fr/polysh/files/polysh-0.4.tar.gz  tar -zxvf polysh-0.4.tar.gz    vim prod-polysh.sh

脚本内容如下:

  #10.252.176.33,10.252.176.35是你要链接的机器ip  python /opt/hl/polysh-0.4/polysh.py {10.252.176.33,10.252.176.35}

开放给其他用户可执行的权限

  chmod 777 prod-polysh.sh

2.未安装python的安装

  wget wget http://guichaz.free.fr/polysh/files/polysh-0.4.tar.gz  tar -zxvf polysh-0.4.tar.gz  cd polysh-0.4   su   python setup.py install    vim prod-polysh.sh

脚本内容如下:

  #10.252.176.33,10.252.176.35是你要链接的机器ip  python /opt/hl/polysh-0.4/polysh.py {10.252.176.33,10.252.176.35}

开放给其他用户可执行的权限

  chmod 777 prod-polysh.sh

三、Xshell配置Xagent(mac可跳过这一步)

打开文件-属性,选择SSH选项,选择”使用密码处理的Xagent(SSH代理)”。然后将Xshell重启。

四、polysh使用

4.1.使用方法一

  polysh 10.252.176.33 10.252.176.35

4.2.使用方法二

  ./prod-polysh.sh

则会出现如下提示信息

  [---hl-----]$ ./prod-polysh.sh  ready (8)

ready (8) 表示 8台机器已经连接完毕,可以执行查询命令。exit或Crtl+z都可以退出。

4.3.执行命令

  ready (8)>cd /opt/hl  ready (8)>pwd

显示如下:

  10.252.176.33: /opt/hl  10.252.176.35 : /opt/hl

五、源码

可以通过git获取polysh的源码

  git clone git://repo.or.cz/polysh.git

六、其他

以冒号开头的指令不会发送到远程主机,polysh会执行以冒号开头的指令,例如:

  ready (2)> :help   :add Add one or many remote shells.   :chdir Change the current directory of polysh (not the remote shells).   :disable Disable sending commands to remote shells.   :enable Enable sending commands to remote shells.   :export_vars Export some environment variables on enabled remote shells.   :help List control commands or show their documentations.   :hide_password Do not echo the next typed line.   :list List remote shells and their states.   :purge Delete disabled remote shells.   :quit Quit polysh.   :reconnect Try to reconnect to disconnected remote shells.   :rename Rename all enabled remote shells with the argument.   :replicate Copy a path from one remote shell to all others   :reset_prompt Change the prompt to be recognized by polysh.   :send_ctrl Send a control character to remote shells.   :set_debug Enable or disable debugging output for remote shells.   :set_log Duplicate every console I/O into the given local file.   :show_read_buffer Print the data read by remote shells.   :upload Upload the specified local path to enabled remote shells.

总结

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