Table of Contents

Manually Install Arthas

  1. Download the latest version

    Latest version, Click To Download: open in new window

  2. Unzip zip file

  3. Install Arthas

    It is recommended to completely remove all old versions of Arthas before installation.

    sudo su admin
    rm -rf /home/admin/.arthas/lib/* # remove all the leftover of the old outdated Arthas
    cd arthas
    ./ # switch the user based on the owner of the target Java process.
  4. Start Arthas

    Make sure stop the old Arthas server before start.


Startup with


You can install Arthas with one single line command on Linux, Unix, and Mac. Pls. copy the following command and paste it into the command line, then press Enter to run:

curl -L | sh

The command above will download the bootstrap script to the current directory. You can move it the any other place you want, or put its location in $PATH.

You can enter its interactive interface by executing, or execute -h for more help information.


Latest Version, Click To Download: open in new window

Download and unzip, then find as.bat from 'bin' directory. For now this script will only take one argument pid, which means you can only diagnose the local Java process. (Welcome any bat script expert to make it better ❤️)

as.bat <pid>

If you want to diagnose Java process run as windows service, try these commands:

as-service.bat -port <port>
as-service.bat -pid <pid>
as-service.bat -pid <pid> --interact

Use this command to remove arthas service:

as-service.bat -remove

Manual command line startup

If you fail to boot Arthas with the provided batch file, you could try to assemble the bootstrap command in the following way.

  1. Locate java in the target JVM:

    • Linux/Unix/Mac: ps aux | grep java
    • Windows: open the Process Monitor to search java
  2. Assemble bootstrap command:

    Let's suppose we are using /opt/jdk1.8/bin/java, then the command should be:

    /opt/jdk1.8/bin/java -Xbootclasspath/a:/opt/jdk1.8/lib/tools.jar \
        -jar /tmp/arthas-packaging/arthas-core.jar \
        -pid 15146 \
        -target-ip -telnet-port 3658 -http-port 8563 \
        -core /tmp/arthas-packaging/arthas-core.jar \
        -agent /tmp/arthas-packaging/arthas/arthas-agent.jar


    • -Xbootclasspath adds tools.jar
    • -jar /tmp/arthas-packaging/arthas-core.jar specifies main entry
    • -pid 15146 specifies the target java process PID
    • -target-ip specifies the IP
    • -telnet-port 3658 -http-port 8563 specifies telnet and HTTP ports for remote access
    • -core /tmp/arthas-packaging/arthas-core.jar -agent /tmp/arthas-packaging/arthas/arthas-agent.jar specifies core/agent jar package

    If you are running on JDK 1.9 or above,then it's unnecessary to add tools.jar in option -Xbootclasspath.

    You can find the logs from ~/logs/arthas/arthas.log.

  3. Use telnet to connect once attaching to the target JVM (in step 2) succeeds

    telnet 3658