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From Jonathan Hurley <>
Subject Re: Ambari - Trouble Checking Status for Custom Application
Date Tue, 19 Apr 2016 12:06:02 GMT
Ah, I had forgotten this was a status command. The print statements will also appear in /var/log/ambari-agent/ambari-agent.out

On Apr 19, 2016, at 1:08 AM, Souvik Sarkhel <<>>

When will the command run as far as I know Ambari automatically invokes the status function.

On Mon, Apr 18, 2016 at 7:50 PM, Jonathan Hurley <<>>
When your command runs, it will show up in the UI as something like "command-123.json". You'll
match this up to the "output" file on the agent:

You're not printing the value of dummy_master_pid_file in your example below; you'll want
to print that as well to make sure it's rendering properly. Are you sure you have the directories
correct? You're trying to use zoo/dataDir as the placeholder which renders to "/usr/share/zookeeper/tmp".
You'll need to make sure that your "zoo" config has dataDir set to /usr/share/zookeeper/tmp

On Apr 18, 2016, at 9:44 AM, Souvik Sarkhel <<>>

Hi Jonathan,
Earlier I was using
from resource_management import *
now I have added this import statement also
from resource_management.libraries.functions.format import format
and also given 777 permission till the intended pid file. Still its not working.

Can you please tell me from where can I see the print statements which I provide in status
function so that I can debug the function.

On Mon, Apr 18, 2016, 18:35 Jonathan Hurley <<>>
What are your import statements? The "format" function provided by Ambari's common library
has a naming conflict with a default python function named "format". If you don't import the
right one, your format("...") command will fail silently. Make sure you are importing:

from resource_management.libraries.functions.format import format

On Apr 18, 2016, at 4:27 AM, Souvik Sarkhel <<>>

Hi All,

I have created a custom service for Zookeeper and using Ambari 2.1.0 .In status function of if its defined in this way:
def status(self, env):
        config = Script.get_config()
        zkDataDir = config['configurations']['zoo']['dataDir']
        print 'Status of the Zookeeper Master'
        print *****************************************
        print zkDataDir
        dummy_master_pid_file = format("{zkDataDir}/")

Ambari is always showing status of application stopped but when I provide the constant path
of the pid file for example:

dummy_master_pid_file = "/usr/share/zookeeper/tmp/")

it starts working perfectly and Ambari is able to correctly show the status of the application.
I need a variable pid file instead of a constant one. I would to thankful if someone suggest
me a way out.

Thanking you in advance

Souvik Sarkhel

Souvik Sarkhel

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