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Docker
===
## 通过Docker快速入门
1. 删除本地已有的`arthas-demo` docker container（ ）
```sh
$ docker stop arthas-demo || true && docker rm arthas-demo || true
```
1. 启动`arthas-demo`
```sh
$ docker run --name arthas-demo -it hengyunabc/arthas:latest /bin/sh -c "java -jar /opt/arthas/arthas-demo.jar"
```
1. 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 \ ' .-'
| .-. || '--'.' | | | .--. || .-. |`. `-.
| | | || |\ \ | | | | | || | | |.-' |
`--' `--'`--' '--' `--' `--' `--'`--' `--'`-----'
wiki: https://alibaba.github.io/arthas
version: 3.0.5
pid: 9
time: 2018-12-18 11:30:36
```
## 诊断Docker里的Java进程
```sh
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
```sh
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。
```
FROM openjdk:8-jdk-alpine
# copy arthas
COPY --from=hengyunabc/arthas:latest /opt/arthas /opt/arthas
```
如果想指定版本， ：
[https://hub.docker.com/r/hengyunabc/arthas/tags](https://hub.docker.com/r/hengyunabc/arthas/tags)