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观察方法中的某个变量的值"><!--[--><!--]--> arthas 观察方法中的某个变量的值 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11440.html" class="sidebar-item" aria-label="arthas 怎么使用?"><!--[--><!--]--> arthas 怎么使用? <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11467.html" class="sidebar-item" aria-label="arthas 在线教程在哪?"><!--[--><!--]--> arthas 在线教程在哪? <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12455.html" class="sidebar-item" aria-label="arthas 排查内存泄露的具体方法"><!--[--><!--]--> arthas 排查内存泄露的具体方法 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13508.html" class="sidebar-item" aria-label="arthas 如何查看内存使用情况"><!--[--><!--]--> arthas 如何查看内存使用情况 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14833.html" class="sidebar-item" aria-label="Start arthas failed, exception stack trace:com.sun.tools.attach"><!--[--><!--]--> Start arthas failed, exception stack 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class="sidebar-item" aria-label="arthas 怎么查看堆内存太高"><!--[--><!--]--> arthas 怎么查看堆内存太高 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13511.html" class="sidebar-item" aria-label="arthas方法运行后查看成员变量"><!--[--><!--]--> arthas方法运行后查看成员变量 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14843.html" class="sidebar-item" aria-label="arthas 支持jdk 20么"><!--[--><!--]--> arthas 支持jdk 20么 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15737.html" class="sidebar-item" aria-label="进程停了 arthas也会同步停止么"><!--[--><!--]--> 进程停了 arthas也会同步停止么 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11450.html" class="sidebar-item" aria-label="arthas 分析thread线程卡住"><!--[--><!--]--> arthas 分析thread线程卡住 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11795.html" class="sidebar-item" aria-label="使用arthas查看成员变量值具体怎么做"><!--[--><!--]--> 使用arthas查看成员变量值具体怎么做 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12740.html" class="sidebar-item" aria-label="arthas怎么分析cpu很高"><!--[--><!--]--> arthas怎么分析cpu很高 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13512.html" class="sidebar-item" aria-label="如何查看java内存增长哪些对象"><!--[--><!--]--> 如何查看java内存增长哪些对象 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15167.html" class="sidebar-item" aria-label="介绍一下arthas"><!--[--><!--]--> 介绍一下arthas <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15738.html" class="sidebar-item" aria-label="arthas如何查看hashmap的值"><!--[--><!--]--> arthas如何查看hashmap的值 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11451.html" class="sidebar-item" aria-label="arthas 怎么排查cpu占用过高"><!--[--><!--]--> arthas 怎么排查cpu占用过高 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11809.html" class="sidebar-item" aria-label="linux下的arthas 具体怎么用?(使用教程)"><!--[--><!--]--> linux下的arthas 具体怎么用?(使用教程) <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12741.html" class="sidebar-item" aria-label="如何使用arthas查看系统哪个地方内存占用过大"><!--[--><!--]--> 如何使用arthas查看系统哪个地方内存占用过大 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13513.html" class="sidebar-item" aria-label="arthas 监听成员变量值的方法是什么?"><!--[--><!--]--> arthas 监听成员变量值的方法是什么? <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15543.html" class="sidebar-item" aria-label="arthas中tt命令如何查看方法入参的具体命令"><!--[--><!--]--> arthas中tt命令如何查看方法入参的具体命令 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15739.html" class="sidebar-item" aria-label="arthas可以监听私有方法吗"><!--[--><!--]--> arthas可以监听私有方法吗 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11452.html" class="sidebar-item" aria-label="arthas 查看方法耗时"><!--[--><!--]--> arthas 查看方法耗时 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11810.html" class="sidebar-item" aria-label="arthas查看方法耗时"><!--[--><!--]--> arthas查看方法耗时 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13448.html" class="sidebar-item" aria-label="如何使用arthas分析慢查询"><!--[--><!--]--> 如何使用arthas分析慢查询 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13522.html" class="sidebar-item" aria-label="Connect to telnet server error: 127.0.0.1 3658"><!--[--><!--]--> Connect to telnet server error: 127.0.0.1 3658 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15726.html" class="sidebar-item" aria-label="arthas 如何查询static变量"><!--[--><!--]--> arthas 如何查询static变量 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15740.html" class="sidebar-item" aria-label="arthas 分析内存升高的方法"><!--[--><!--]--> arthas 分析内存升高的方法 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11453.html" class="sidebar-item" aria-label="arthas 怎样查看方法耗时"><!--[--><!--]--> arthas 怎样查看方法耗时 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11814.html" class="sidebar-item" aria-label="arthas 怎么排查内存泄漏"><!--[--><!--]--> arthas 怎么排查内存泄漏 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13504.html" class="sidebar-item" aria-label="如何查看实时jvm内存大小占用"><!--[--><!--]--> 如何查看实时jvm内存大小占用 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14763.html" class="sidebar-item" aria-label="利用Arthas排查NoSuchMethodError"><!--[--><!--]--> 利用Arthas排查NoSuchMethodError <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15728.html" class="sidebar-item" aria-label="arthas 获取成员变量"><!--[--><!--]--> arthas 获取成员变量 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11454.html" class="sidebar-item" aria-label="arthas 常用命令介绍"><!--[--><!--]--> arthas 常用命令介绍 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12453.html" class="sidebar-item" aria-label="arthas 怎么查看内存情况?"><!--[--><!--]--> arthas 怎么查看内存情况? <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13506.html" class="sidebar-item" aria-label="如何查看java内存增长哪些对象"><!--[--><!--]--> 如何查看java内存增长哪些对象 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14831.html" class="sidebar-item" aria-label="Dashboard 命令cpuUsage长期在90%左右"><!--[--><!--]--> Dashboard 命令cpuUsage长期在90%左右 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15729.html" class="sidebar-item" aria-label="arthas 怎么查看变量内容"><!--[--><!--]--> arthas 怎么查看变量内容 <!--[--><!--]--></a><!----></li><!--]--></ul></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case" rel="noopener noreferrer" target="_blank" aria-label="用户案例"><!--[--><!--]--><span>用户案例</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas" rel="noopener noreferrer" target="_blank" aria-label="Star me at github"><!--[--><!--]--><span>Star me at github</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md" rel="noopener noreferrer" target="_blank" aria-label="编译调试/参与贡献"><!--[--><!--]--><span>编译调试/参与贡献</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/releases" rel="noopener noreferrer" target="_blank" aria-label="Release Notes"><!--[--><!--]--><span>Release Notes</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a href="/doc/contact-us.md" class="sidebar-item" aria-label="QQ 群/钉钉群"><!--[--><!--]--> QQ 群/钉钉群 <!--[--><!--]--></a><!----></li><!--]--></ul></li><!--]--></ul><!--[--><!--]--></aside><!--]--><!--[--><main class="page" data-v-fdd717e0><!--[--><!--]--><div class="right-menu-padding theme-default-content" data-v-fdd717e0><!--[--><!--]--><div class="right-menu-wrapper" data-v-fdd717e0 data-v-64666cd5><div class="right-menu-margin" data-v-64666cd5><div class="right-menu-title" data-v-64666cd5>目录</div><div class="right-menu-content" data-v-64666cd5><!--[--><!--]--></div></div></div><div data-v-fdd717e0><h1 id="启动-arthas" tabindex="-1"><a class="header-anchor" href="#启动-arthas" aria-hidden="true">#</a> 启动 Arthas</h1><h2 id="交互模式启动" tabindex="-1"><a class="header-anchor" href="#交互模式启动" aria-hidden="true">#</a> 交互模式启动</h2><div class="language-bash ext-sh line-numbers-mode"><pre class="language-bash"><code>./as.sh
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><div class="language-bash ext-sh line-numbers-mode"><pre class="language-bash"><code>➜ bin git:<span class="token punctuation">(</span>develop<span class="token punctuation">)</span> ✗ ./as.sh
Found existing <span class="token function">java</span> process, please choose one and input the serial number of the process, eg: <span class="token number">1</span> <span class="token builtin class-name">.</span> Then hit ENTER.
<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span>: <span class="token number">3088</span> org.jetbrains.idea.maven.server.RemoteMavenServer
* <span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span>: <span class="token number">12872</span> org.apache.catalina.startup.Bootstrap
<span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">]</span>: <span class="token number">2455</span>
Attaching to <span class="token number">12872</span><span class="token punctuation">..</span>.
,---. ,------. ,--------.,--. ,--. ,---. ,---.
/ O <span class="token punctuation">\</span> <span class="token operator">|</span> .--. <span class="token string">&#39;&#39;</span>--. .--<span class="token string">&#39;| &#39;</span>--<span class="token string">&#39; | / O \ &#39;</span> .-<span class="token string">&#39;
| .-. || &#39;</span>--<span class="token string">&#39;.&#39;</span> <span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">|</span> .--. <span class="token operator">||</span> .-. <span class="token operator">|</span><span class="token variable"><span class="token variable">`</span><span class="token builtin class-name">.</span> <span class="token variable">`</span></span>-.
<span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">||</span> <span class="token operator">|</span><span class="token punctuation">\</span> <span class="token punctuation">\</span> <span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">||</span> <span class="token operator">|</span> <span class="token operator">|</span> <span class="token operator">|</span>.-<span class="token string">&#39; |
`--&#39;</span> <span class="token variable"><span class="token variable">`</span>--&#39;<span class="token variable">`</span></span>--<span class="token string">&#39; &#39;</span>--<span class="token string">&#39; `--&#39;</span> <span class="token variable"><span class="token variable">`</span>--&#39; <span class="token variable">`</span></span>--<span class="token string">&#39;`--&#39;</span> <span class="token variable"><span class="token variable">`</span>--&#39;<span class="token variable">`</span></span>-----&#39;
$
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="非交互模式启动" tabindex="-1"><a class="header-anchor" href="#非交互模式启动" aria-hidden="true">#</a> 非交互模式启动</h2><p>启动脚本如下:</p><div class="language-bash ext-sh line-numbers-mode"><pre class="language-bash"><code>./as.sh <span class="token operator">&lt;</span>PID<span class="token operator">&gt;</span><span class="token punctuation">[</span>@IP:PORT<span class="token punctuation">]</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="参数说明" tabindex="-1"><a class="header-anchor" href="#参数说明" aria-hidden="true">#</a> 参数说明</h3><ul><li>PID目标 Java 进程 ID请确保执行当前执行命令的用户必须有足够的权限操作对应的 Java 进程)</li><li>IPArthas Server 侦听的地址,默认值是 <code>127.00.1</code>。Arthas 允许多个用户同时访问,并且各自的命令不会相互干扰执行</li><li>PORT目标服务器 Arthas Server 的端口号,默认的端口号是 3658</li></ul><h3 id="示例" tabindex="-1"><a class="header-anchor" href="#示例" aria-hidden="true">#</a> 示例</h3><ul><li><p>如果不指定 IP 和 PORT默认是 127.0.0.1 和 3658</p><blockquote><p>./as.sh 12345</p></blockquote><p>上述命令等价于:</p><blockquote><p>./as.sh 12356@127.0.0.1:3658</p></blockquote></li></ul><h3 id="远程诊断" tabindex="-1"><a class="header-anchor" href="#远程诊断" aria-hidden="true">#</a> 远程诊断</h3><p>服务器启动 Arthas Server 后,其他人可以使用 telnet 远程连接上去进程诊断,例如:</p><div class="language-bash ext-sh line-numbers-mode"><pre class="language-bash"><code>telnet <span class="token number">192.168</span>.1.119 <span class="token number">3658</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="sudo-支持" tabindex="-1"><a class="header-anchor" href="#sudo-支持" aria-hidden="true">#</a> sudo 支持</h3><p>成熟的线上管理环境一般都不会直接开放 JVM 部署用户权限给你,而是通过 sudo-list 来控制和监控用户的越权操作。由于 as.sh 脚本中会对当前用户的环境变量产生感知,所以需要加上 -H 参数</p><div class="language-bash ext-sh line-numbers-mode"><pre class="language-bash"><code><span class="token function">sudo</span> <span class="token parameter variable">-u</span> admin <span class="token parameter variable">-H</span> ./as.sh <span class="token number">12345</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="windows-环境支持" tabindex="-1"><a class="header-anchor" href="#windows-环境支持" aria-hidden="true">#</a> Windows 环境支持</h3><p>目前<code>as.bat</code>脚本只支持一个参数pid</p><div class="language-bash ext-sh line-numbers-mode"><pre class="language-bash"><code>as.bat <span class="token operator">&lt;</span>pid<span class="token operator">&gt;</span>
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