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3.4.8
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< li class = "toctree-l1" > < a class = "reference external" href = "https://mp.weixin.qq.com/s/jfjvBmrKmHDdKn-Iez-c4Q" > 2022实习生招聘< / a > < / li >
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< li class = "toctree-l3" > < a class = "reference internal" href = "#id1" > 通过包管理软件来安装< / a > < / li >
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< li class = "toctree-l2" > < a class = "reference internal" href = "#id2" > 通过Docker快速入门< / a > < / li >
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< li class = "toctree-l2" > < a class = "reference internal" href = "#arthas" > 把Arthas安装到基础镜像里< / a > < / li >
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< h1 > Docker< a class = "headerlink" href = "#docker" title = "永久链接至标题" > ¶< / a > < / h1 >
< div class = "section" id = "dockerjdk" >
< h2 > 在Docker里使用JDK< a class = "headerlink" href = "#dockerjdk" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 很多时候， ， ， ， < / p >
< div class = "section" id = "jdk" >
< h3 > 使用公开的JDK镜< a class = "headerlink" href = "#jdk" title = "永久链接至标题" > ¶< / a > < / h3 >
< ul class = "simple" >
< li > < p > https://hub.docker.com/_/openjdk/< / p > < / li >
< / ul >
< p > 比如：< / p >
< div class = "highlight-default notranslate" > < pre class = "literal-block" > FROM openjdk:8-jdk< / pre >
< / div >
< p > 或者：< / p >
< div class = "highlight-default notranslate" > < pre class = "literal-block" > FROM openjdk:8-jdk-alpine< / pre >
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< div class = "section" id = "id1" >
< h3 > 通过包管理软件来安装< a class = "headerlink" href = "#id1" title = "永久链接至标题" > ¶< / a > < / h3 >
< p > 比如：< / p >
< div class = "highlight-bash notranslate" > < div class = "highlight hljs" > < pre class = "bash" > # Install OpenJDK-8
RUN apt-get update & & \
apt-get install -y openjdk-8-jdk & & \
apt-get install -y ant & & \
apt-get clean;
# Fix certificate issues
RUN apt-get update & & \
apt-get install ca-certificates-java & & \
apt-get clean & & \
update-ca-certificates -f;
# Setup JAVA_HOME -- useful for docker commandline
ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64/
RUN export JAVA_HOME< / pre > < / div >
< / div >
< p > 或者：< / p >
< div class = "highlight-bash notranslate" > < div class = "highlight hljs" > < pre class = "bash" > RUN yum install -y \
java-1.8.0-openjdk \
java-1.8.0-openjdk-devel
ENV JAVA_HOME /usr/lib/jvm/java-1.8.0-openjdk/
RUN export JAVA_HOME< / pre > < / div >
< / div >
< / div >
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< h2 > 通过Docker快速入门< a class = "headerlink" href = "#id2" title = "永久链接至标题" > ¶< / a > < / h2 >
< ol >
< li > < p > 删除本地已有的< code class = "docutils literal notranslate" > < span class = "pre" > arthas-demo< / span > < / code > docker container（ ） < / p >
< div class = "highlight-sh notranslate" > < div class = "highlight hljs" > < pre class = "sh" > $ docker stop arthas-demo || true & & docker rm arthas-demo || true< / pre > < / div >
< / div >
< / li >
< li > < p > 启动< code class = "docutils literal notranslate" > < span class = "pre" > arthas-demo< / span > < / code > < / p >
< div class = "highlight-sh notranslate" > < div class = "highlight hljs" > < pre class = "sh" > $ docker run --name arthas-demo -it hengyunabc/arthas:latest /bin/sh -c " java -jar /opt/arthas/arthas-demo.jar" < / pre > < / div >
< / div >
< / li >
< li > < p > 启动< code class = "docutils literal notranslate" > < span class = "pre" > arthas-boot< / span > < / code > 来进行诊断< / p >
< div class = "highlight-sh notranslate" > < div class = "highlight hljs" > < pre class = "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://arthas.aliyun.com/doc
version: 3.0.5
pid: 9
time: 2018-12-18 11:30:36< / pre > < / div >
< / div >
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< / ol >
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< h2 > 诊断Docker里的Java进程< a class = "headerlink" href = "#dockerjava" title = "永久链接至标题" > ¶< / a > < / h2 >
< div class = "highlight-sh notranslate" > < div class = "highlight hljs" > < pre class = "sh" > docker exec -it ${containerId} /bin/bash -c " wget https://arthas.aliyun.com/arthas-boot.jar & & java -jar arthas-boot.jar" < / pre > < / div >
< / div >
< / div >
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< h2 > 诊断k8s里容器里的Java进程< a class = "headerlink" href = "#k8sjava" title = "永久链接至标题" > ¶< / a > < / h2 >
< div class = "highlight-sh notranslate" > < div class = "highlight hljs" > < pre class = "sh" > kubectl exec -it ${pod} --container ${containerId} -- /bin/bash -c " wget https://arthas.aliyun.com/arthas-boot.jar & & java -jar arthas-boot.jar" < / pre > < / div >
< / div >
< / div >
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< h2 > 把Arthas安装到基础镜像里< a class = "headerlink" href = "#arthas" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 可以很简单把Arthas安装到你的Docker镜像里。< / p >
< div class = "highlight-default notranslate" > < pre class = "literal-block" > FROM openjdk:8-jdk-alpine
# copy arthas
COPY --from=hengyunabc/arthas:latest /opt/arthas /opt/arthas< / pre >
< / div >
< p > 如果想指定版本， ： < / p >
< p > < a class = "reference external" href = "https://hub.docker.com/r/hengyunabc/arthas/tags" > https://hub.docker.com/r/hengyunabc/arthas/tags< / a > < / p >
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