Support Questions

Find answers, ask questions, and share your expertise
Announcements
Celebrating as our community reaches 100,000 members! Thank you!

Custom service check process status failed(show red icon) on ambari 2.2.1 and HDP 2.4

avatar
New Contributor

I refer to Defining a Custom Stack and Services. (https://cwiki.apache.org/confluence/display/AMBARI/Defining+a+Custom+Stack+and+Services)

My custom service directory structure is as follows:

SAMPLESRV/
├── configuration
│   └── test-config.xml
├── metainfo.xml
└── package
    ├── archive.zip
    └── scripts
        ├── master.py
        ├── sample_client.py
        └── slave.py

When I add check_process_status method in master.py and restart ambari server, the service status will show red icon. But the service is running. add-check-process-status.png add-check-process-status2.png

  def status(self, env):
    print 'Status of the Sample Srv Master';
    my_test_pid = "/var/run/mytest/mytest_server.pid"
    check_process_status(my_test_pid)

When I comment check_process_status method in master.py and restart ambari server, the service status will show green icon.

Do I miss something?

About my source code of custom service , please refer to attachment file my-custom-service.tar.gz

Thanks.

1 ACCEPTED SOLUTION

avatar
Super Collaborator

Hi @Ian Li,

I was able to get this to stop and start by adding these lines in the master.py and slave.py

I added a dummy PID, Since we have not installed a real service, there is no PID file created by it.Therefore we are going to artificially create the PID,remove the PIDand check the process status of the dummy pid.

screen-shot-2016-07-06-at-20304-pm.png

screen-shot-2016-07-06-at-20322-pm.png

screen-shot-2016-07-06-at-20340-pm.png

Hope this helps. Let me know in case of any other issues.

Thanks,

Sujitha

View solution in original post

5 REPLIES 5

avatar
Super Collaborator

Hi @Ian Li,

I followed the steps from https://cwiki.apache.org/confluence/display/AMBARI/Defining+a+Custom+Stack+and+Services,

I was able to launch the service and it shows green . Please find the attached.

My assumption is within the documentation I see the steps for applicable for HDP 2.0.6 -> 2.1.

Can you try the steps in

/var/lib/ambari-server/resources/stacks/HDP/2.4/services

new-sample-service.png

screenshot1.png

Hope that helps. Let me know in case of issues.

Thanks,

Sujitha

avatar
New Contributor

Hi @sujitha sanku,

Thank you for the information.

I use Hortonworks Sandbox HDP 2.4 and try the steps in "/var/lib/ambari-server/resources/stacks/HDP/2.4/services"

The service status shows green. When I stop service, it will show red a while and turn green. It doesn't make sense.

After I add check_process_status(my_test_pid) in status method, the service status show red.

I have already refer to some information. For example: How to deploy Zeppelin(http://hortonworks.com/apache/zeppelin/#section_3) and Jupyter(https://github.com/randerzander/jupyter-service) on ambari

But I still don't know why the check_process_status doesn't work.

Thanks.

avatar
Super Collaborator

Hi @Ian Li,

I was able to get this to stop and start by adding these lines in the master.py and slave.py

I added a dummy PID, Since we have not installed a real service, there is no PID file created by it.Therefore we are going to artificially create the PID,remove the PIDand check the process status of the dummy pid.

screen-shot-2016-07-06-at-20304-pm.png

screen-shot-2016-07-06-at-20322-pm.png

screen-shot-2016-07-06-at-20340-pm.png

Hope this helps. Let me know in case of any other issues.

Thanks,

Sujitha

avatar
Super Collaborator

Hi @Ian Li,

If this issue was resolved can you pick the best answer and we can think this as resolved.

Thanks,

Sujitha

avatar
New Contributor

Hi @sujitha sanku,

It's working.

Thank you again for everything you have done!

Thanks.