I've implemented dummy service like described here but it works fine for start and stop commands only. But when I'm restarting the service it causes the following exception: Traceback (most recent call last):
File "/var/lib/ambari-agent/cache/stacks/HDP/2.5/services/CATALOGER/package/scripts/application.py", line 28, in <module>
Master().execute()
File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 280, in execute
method(env)
File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 709, in restart
self.status(env)
File "/var/lib/ambari-agent/cache/stacks/HDP/2.5/services/CATALOGER/package/scripts/application.py", line 25, in status
Execute ( format("cat {pid_file}") );
File "/usr/lib/python2.6/site-packages/resource_management/core/base.py", line 155, in __init__
self.env.run()
File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 160, in run
self.run_action(resource, action)
File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 124, in run_action
provider_action()
File "/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py", line 273, in action_run
tries=self.resource.tries, try_sleep=self.resource.try_sleep)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 71, in inner
result = function(command, **kwargs)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 93, in checked_call
tries=tries, try_sleep=try_sleep)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 141, in _call_wrapper
result = _call(command, **kwargs_copy)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 294, in _call
raise Fail(err_msg)
resource_management.core.exceptions.Fail: Execution of 'cat /opt/app/application.pid' returned 1. cat: /opt/app/application.pid: No such file or directory
Ok. File really does not exist (because was deleted during service stop). So I' adding lines like this: def status(self, env):
pid_file = "/opt/app/application.pid";
if (os.path.exists(pid_file)):
Execute ( format("cat {pid_file}") );
and now it checks file existence but still fails with this message: Traceback (most recent call last):
File "/var/lib/ambari-agent/cache/stacks/HDP/2.5/services/CATALOGER/package/scripts/application.py", line 30, in <module>
Master().execute()
File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 280, in execute
method(env)
File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 710, in restart
raise Fail("Stop command finished but process keep running.")
resource_management.core.exceptions.Fail: Stop command finished but process keep running. Can anyone suggest how to manage service restart properly?
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