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手动安装Arthas
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===
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## 手动安装Arthas
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1. 下载最新版本
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**最新版本，点击下载**：[](http://repository.sonatype.org/service/local/artifact/maven/redirect?r=central-proxy&g=com.taobao.arthas&a=arthas-packaging&e=zip&c=bin&v=LATEST)
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如果下载速度比较慢，可以尝试用[阿里云的镜像仓库](https://maven.aliyun.com/)，比如要下载`3.x.x`版本（替换`3.x.x`为最新版本），下载的url是：
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https://maven.aliyun.com/repository/public/com/taobao/arthas/arthas-packaging/3.x.x/arthas-packaging-3.x.x-bin.zip
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2. 解压缩arthas的压缩包
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```
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unzip arthas-packaging-bin.zip
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```
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3. 安装Arthas
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安装之前最好把所有老版本的Arthas全都删掉
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```
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sudo su admin
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rm -rf /home/admin/.arthas/lib/*
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cd arthas
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./install-local.sh
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```
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> 注意，这里根据你需要诊断的Java进程的所属用户进行切换
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4. 启动Arthas
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启动之前，请确保老版本的Arthas已经`shutdown`.
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```
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./as.sh
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```
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## 以脚本的方式启动as.sh/as.bat
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### Linux/Unix/Mac
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Arthas 支持在 Linux/Unix/Mac 等平台上一键安装，请复制以下内容，并粘贴到命令行中，敲 `回车` 执行即可：
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```bash
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curl -L https://alibaba.github.io/arthas/install.sh | sh
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```
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上述命令会下载启动脚本文件 `as.sh` 到当前目录，你可以放在任何地方或将其加入到 `$PATH` 中。
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直接在shell下面执行`./as.sh`，就会进入交互界面。
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也可以执行`./as.sh -h`来获取更多参数信息。
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### Windows
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最新版本，点击下载：[](http://repository.sonatype.org/service/local/artifact/maven/redirect?r=central-proxy&g=com.taobao.arthas&a=arthas-packaging&e=zip&c=bin&v=LATEST)
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下载解压后在bin目录有 `as.bat`。此脚本暂时只接受一个参数 pid，即只能诊断本机上的 Java 进程。（欢迎精通bat脚本的开发者改进）
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```
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as.bat <pid>
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```
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## 手动拼接命令行启动
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如果启动遇到问题，可以尝试手动拼接出命令行参数来启动。
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1. 查找目录jvm的java文件路径。
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在linux/mac上执行`ps aux | grep java`，在windows上可以通过进程管理器来查看。假设是`/opt/jdk1.8/bin/java`。
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2. 拼接出命令行
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```bash
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/opt/jdk1.8/bin/java -Xbootclasspath/a:/opt/jdk1.8/lib/tools.jar \
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-jar /tmp/arthas-packaging/arthas-core.jar \
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-pid 15146 \
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-target-ip 127.0.0.1 -telnet-port 3658 -http-port 8563 \
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-core /tmp/arthas-packaging/arthas-core.jar \
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-agent /tmp/arthas-packaging/arthas/arthas-agent.jar
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```
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命令行分几部分组成：
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* `-Xbootclasspath` 增加tools.jar
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* `-jar /tmp/arthas-packaging/arthas-core.jar` 指定main函数入口
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* `-pid 15146` 指定目标java进程ID
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* `-target-ip 127.0.0.1` 指定IP
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* `-telnet-port 3658 -http-port 8563` 指定telnet和http端口
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* `-core /tmp/arthas-packaging/arthas-core.jar -agent /tmp/arthas-packaging/arthas/arthas-agent.jar` 指定core/agent jar包
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如果是`jdk > 9`，即9/10/11以上的版本，不需要指定`tools.jar`，直接去掉`-Xbootclasspath` 的配置即可。
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启动目志输出在`~/logs/arthas/arthas.log`里。
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3. attach成功之后，使用telnet连接
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```bash
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telnet 127.0.0.1 3658
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```
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