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# Arthas Properties
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`arthas.properties`文件在 arthas 的目录下。
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- 如果是自动下载的 arthas，则目录在`~/.arthas/lib/3.x.x/arthas/`下面
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- 如果是下载的完整包，在 arthas 解压目录下
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## 支持的配置项
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::: warning
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注意配置必须是`驼峰`的，和 spring boot 的`-`风格不一样。spring boot 应用才同时支持`驼峰` 和 `-`风格的配置。
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:::
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```
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#arthas.config.overrideAll=true
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arthas.telnetPort=3658
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arthas.httpPort=8563
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arthas.ip=127.0.0.1
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# seconds
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arthas.sessionTimeout=1800
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#arthas.appName=demoapp
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#arthas.tunnelServer=ws://127.0.0.1:7777/ws
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#arthas.agentId=mmmmmmyiddddd
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```
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- 如果配置 `arthas.telnetPort`为 -1 ，则不 listen telnet 端口。`arthas.httpPort`类似。
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- 如果配置 `arthas.telnetPort`为 0 ，则随机 telnet 端口，在`~/logs/arthas/arthas.log`里可以找到具体端口日志。`arthas.httpPort`类似。
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:::tip
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如果是防止一个机器上启动多个 arthas 端口冲突。可以配置为随机端口，或者配置为 -1，并且通过 tunnel server 来使用 arthas。
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:::
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### 禁止指定命令
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::: tip
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since 3.5.2
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:::
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比如配置：
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```
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arthas.disabledCommands=stop,dump
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```
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也可以在命令行配置： `--disabled-commands stop,dump` 。
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::: tip
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默认情况下，arthas-spring-boot-starter 会禁掉`stop`命令。
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:::
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## 配置的优先级
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配置的优先级是：命令行参数 > System Env > System Properties > arthas.properties 。
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比如：
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- `./as.sh --telnet-port 9999` 传入的配置会覆盖掉`arthas.properties`里的默认值`arthas.telnetPort=3658`。
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- 如果应用自身设置了 system properties `arthas.telnetPort=8888`，则会覆盖掉`arthas.properties`里的默认值`arthas.telnetPort=3658`。
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如果想要 `arthas.properties`的优先级最高，则可以配置 `arthas.config.overrideAll=true` 。
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