Polysh命令实现多日志查询的方法示例
<p><span><strong>一、Polysh简介</strong></span></p>
<p>
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。</p>
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<code class="plain plain">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.</code>
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<span><strong>注：</strong></span> 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 。</p>
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<span><strong>二、polysh安装</strong></span></p>
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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/。</p>
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<strong>1.已安装python的安装</strong></p>
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<code class="bash plain">wget wget http:</code><code class="bash plain">//guichaz</code><code class="bash plain">.</code><code class="bash functions">free</code><code class="bash plain">.fr</code><code class="bash plain">/polysh/files/polysh-0</code><code class="bash plain">.4.</code><code class="bash functions">tar</code><code class="bash plain">.gz</code>
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<code class="bash functions">tar</code> <code class="bash plain">-zxvf polysh-0.4.</code><code class="bash functions">tar</code><code class="bash plain">.gz</code>
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<code class="bash plain">vim prod-polysh.sh</code>
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脚本内容如下：</p>
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<code class="bash comments">#10.252.176.33,10.252.176.35是你要链接的机器ip</code>
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<code class="bash plain">python </code><code class="bash plain">/opt/hl/polysh-0</code><code class="bash plain">.4</code><code class="bash plain">/polysh</code><code class="bash plain">.py {10.252.176.33,10.252.176.35}</code>
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开放给其他用户可执行的权限</p>
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<code class="bash functions">chmod</code> <code class="bash plain">777 prod-polysh.sh</code>
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<strong>2.未安装python的安装</strong></p>
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<code class="bash plain">wget wget http:</code><code class="bash plain">//guichaz</code><code class="bash plain">.</code><code class="bash functions">free</code><code class="bash plain">.fr</code><code class="bash plain">/polysh/files/polysh-0</code><code class="bash plain">.4.</code><code class="bash functions">tar</code><code class="bash plain">.gz</code>
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<code class="bash functions">tar</code> <code class="bash plain">-zxvf polysh-0.4.</code><code class="bash functions">tar</code><code class="bash plain">.gz</code>
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<code class="bash functions">cd</code> <code class="bash plain">polysh-0.4 </code>
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<code class="bash functions">su</code>
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<code class="bash plain">python setup.py </code><code class="bash functions">install</code>
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<code class="bash plain">vim prod-polysh.sh</code>
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脚本内容如下：</p>
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<code class="bash comments">#10.252.176.33,10.252.176.35是你要链接的机器ip</code>
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<code class="bash plain">python </code><code class="bash plain">/opt/hl/polysh-0</code><code class="bash plain">.4</code><code class="bash plain">/polysh</code><code class="bash plain">.py {10.252.176.33,10.252.176.35}</code>
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开放给其他用户可执行的权限</p>
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<code class="bash functions">chmod</code> <code class="bash plain">777 prod-polysh.sh</code>
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<span><strong>三、Xshell配置Xagent（mac可跳过这一步）</strong></span></p>
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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。</p>
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<span><strong>四、polysh使用</strong></span></p>
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<strong>4.1.使用方法一</strong></p>
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<code class="bash plain">polysh 10.252.176.33 10.252.176.35</code>
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<strong>4.2.使用方法二</strong></p>
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<code class="bash plain">.</code><code class="bash plain">/prod-polysh</code><code class="bash plain">.sh</code>
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则会出现如下提示信息</p>
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<code class="bash plain">[---hl-----]$ .</code><code class="bash plain">/prod-polysh</code><code class="bash plain">.sh</code>
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<code class="bash plain">ready (8)</code>
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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。</p>
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<strong>4.3.执行命令</strong></p>
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<code class="bash plain">ready (8)></code><code class="bash functions">cd</code> <code class="bash plain">/opt/hl</code>
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<code class="bash plain">ready (8)></code><code class="bash functions">pwd</code>
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显示如下：</p>
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<code class="bash plain">10.252.176.33: </code><code class="bash plain">/opt/hl</code>
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<code class="bash plain">10.252.176.35 : </code><code class="bash plain">/opt/hl</code>
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<span><strong>五、源码</strong></span></p>
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可以通过git获取polysh的源码</p>
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<code class="bash plain">git clone git:</code><code class="bash plain">//repo</code><code class="bash plain">.or.cz</code><code class="bash plain">/polysh</code><code class="bash plain">.git</code>
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<span><strong>六、其他</strong></span></p>
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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:</p>
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<code class="plain plain">ready (2)> :help </code>
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<code class="plain plain">:add Add one or many remote shells. </code>
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<code class="plain plain">:chdir Change the current directory of polysh (not the remote shells). </code>
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<code class="plain plain">:disable Disable sending commands to remote shells. </code>
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<code class="plain plain">:enable Enable sending commands to remote shells. </code>
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<code class="plain plain">:export_vars Export some environment variables on enabled remote shells. </code>
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<code class="plain plain">:help List control commands or show their documentations. </code>
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<code class="plain plain">:hide_password Do not echo the next typed line. </code>
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<code class="plain plain">:list List remote shells and their states. </code>
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<code class="plain plain">:purge Delete disabled remote shells. </code>
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<code class="plain plain">:quit Quit polysh. </code>
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<code class="plain plain">:reconnect Try to reconnect to disconnected remote shells. </code>
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<code class="plain plain">:rename Rename all enabled remote shells with the argument. </code>
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<code class="plain plain">:replicate Copy a path from one remote shell to all others </code>
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<code class="plain plain">:reset_prompt Change the prompt to be recognized by polysh. </code>
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<code class="plain plain">:send_ctrl Send a control character to remote shells. </code>
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<code class="plain plain">:set_debug Enable or disable debugging output for remote shells. </code>
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<code class="plain plain">:set_log Duplicate every console I/O into the given local file. </code>
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<code class="plain plain">:show_read_buffer Print the data read by remote shells. </code>
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<code class="plain plain">:upload Upload the specified local path to enabled remote shells.</code>
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<span><strong>总结</strong></span></p>
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以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对的支持。</p>
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原文链接：http://www.jianshu.com/p/2ed0ad5ccb3f</p>
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