Shulou(Shulou.com)06/02 Report--

Purpose: after starting the marathon service on the centos server, you can use intellij idea for remote debugging on the window

Main environment:

1. I deploy the marathon service with reference to the way provided by https://mesosphere.github.io/marathon/docs/.

2. Marathon source code under down on https://github.com/mesosphere/marathon

If you don't want to modify the source code, you can down the source code of marathon and import it into intellijidea directly.

If you want to modify the source code and then debug remotely, you need to recompile the marathon source code, package it into a jar package, and replace the source code package under / marathon root directory / target/scala-2.11 on the server; in this case, make sure that the source code debugged locally is consistent with the source code running on the server.

What is the difference between remote debugging of marathon and remote debugging of spark?

Personal feelings, the main differences in one aspect:

After studying the remote debugging of spark at the end of last year, we need to add jvm parameters to the spark-class script, such as:

Declare JAVA_OPTS

While Marathon does this better, it doesn't need to be added.

Whether you are directly down source code from git, or download deployment package through https://mesosphere.github.io/marathon/

Debugging parameters are provided in the startup script bin/start, as shown in the following figure:

However, if you want to implement remote debugging, you need to change the value of the above parameter suspend=n from n to y, otherwise remote debugging will not work.

Specific steps:

1. Modify the startup script start

2. Update the command to start marathon service and change it to debug mode

In the startup script start

Therefore, change marathon's command to start the service to the following form

/ usr/local/marathon/bin/start-jvm-debug 9999-master zk://master001:2181,master002:2181,master003:2181/mesos--zk zk://master001:2181,master002:2181,master003:2181/marathon--framework_name marathon-- mesos_user root-mesos_role marathon_role--mesos_authentication_principal marathon_user

3. In intellij idea, change the way of starting marathon to remote debugging mode.

On the server, start the marathon service

5. On window, break point and start debug

6. Start debug remote debugging

Check to see if the log is printed on the server

OK!

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