Docker

通过Docker快速入门

  1. 删除本地已有的arthas-demo docker container（非必要）

    1.  $ docker stop arthas-demo || true && docker rm arthas-demo || true

  2. 启动arthas-demo

    1.  $ docker run --name arthas-demo -it hengyunabc/arthas:latest /bin/sh -c "java -jar /opt/arthas/arthas-demo.jar"

  3. 启动arthas-boot来进行诊断

    ```sh $ docker exec -it arthas-demo /bin/sh -c “java -jar /opt/arthas/arthas-boot.jar”

    • [1]: 9 jar

      [INFO] arthas home: /opt/arthas[INFO] Try to attach process 9[INFO] Attach process 9 success.[INFO] arthas-client connect 127.0.0.1 3658,—-. ,———. ,————.,—. ,—. ,—-. ,—-./ O \ | .—. ‘’—. .—‘| ‘—‘ | / O \ ‘ .-‘| .-. || ‘—‘.’ | | | .—. || .-. |.-.| | | || |\ \ | | | | | || | | |.-‘ |--'—‘--' '--'—‘ --'—‘--'—‘`——-‘

  1. wiki: https://alibaba.github.io/arthas
  2. version: 3.0.5
  3. pid: 9
  4. time: 2018-12-18 11:30:36
  5. ```

诊断Docker里的Java进程

  1. docker exec -it  ${containerId} /bin/bash -c "wget https://alibaba.github.io/arthas/arthas-boot.jar && java -jar arthas-boot.jar"

诊断k8s里容器里的Java进程

  1. kubectl exec -it ${pod} --container ${containerId} -- /bin/bash -c "wget https://alibaba.github.io/arthas/arthas-boot.jar && java -jar arthas-boot.jar"

把Arthas安装到基础镜像里

可以很简单把Arthas安装到你的Docker镜像里。

  1. FROM openjdk:8-jdk-alpine
  3. # copy arthas
  4. COPY --from=hengyunabc/arthas:latest /opt/arthas /opt/arthas

如果想指定版本，可以查看具体的tags：

https://hub.docker.com/r/hengyunabc/arthas/tags