Why is splunkweb service failing and getting "IOError: Port 8000 not bound on '0.0.0.0'" and "Error in 'start' listener"?

[jerryolson]

Win 7 enterprise 16G RAM, Intel i5 3.2GHz.
Installed version/package: splunk-6.1.4-233537-x64-release.msi

splunkweb constantly dies. Also when system isn't accessed. ie no search etc is performed via ui.
restart with "....splunk\bin\splunk start"

web_service.log:
2014-10-17 16:21:12,315 ERROR [5441259c531b00710] root:138 - ENGINE: Error in 'start' listener >
Traceback (most recent call last):
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\wspbus.py", line 147, in publish
output.append(listener(*args, **kwargs))
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy_cpserver.py", line 95, in start
ServerAdapter.start(self)
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\servers.py", line 61, in start
self.wait()
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\servers.py", line 101, in wait
wait_for_occupied_port(host, port)
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\servers.py", line 266, in wait_for_occupied_port
raise IOError("Port %r not bound on %r" % (port, host))
IOError: Port 8000 not bound on '0.0.0.0'

2014-10-17 16:21:12,315 ERROR [5441259c531b00710] root:138 - ENGINE: Shutting down due to error in start listener:
Traceback (most recent call last):
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\wspbus.py", line 184, in start
self.publish('start')
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\wspbus.py", line 147, in publish
output.append(listener(*args, **kwargs))
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy_cpserver.py", line 95, in start
ServerAdapter.start(self)
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\servers.py", line 61, in start
self.wait()
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\servers.py", line 101, in wait
wait_for_occupied_port(host, port)
File "C:\svart\Program Files\Splunk\Python-2.7\Lib\site-packages\cherrypy\process\servers.py", line 266, in wait_for_occupied_port
raise IOError("Port %r not bound on %r" % (port, host))
IOError: Port 8000 not bound on '0.0.0.0'

2014-10-17 16:21:12,315 INFO [5441259c531b00710] root:138 - ENGINE: Bus STOPPING
2014-10-17 16:21:12,895 INFO [5441259c531b00710] root:138 - ENGINE: HTTP Server cherrypy._cpwsgi_server.CPWSGIServer(('0.0.0.0', 8000)) shut down
2014-10-17 16:21:12,943 INFO [5441259c531b00710] root:138 - ENGINE: Stopped thread 'Monitor'.
2014-10-17 16:21:13,006 INFO [5441259c531b00710] root:138 - ENGINE: Stopped thread '_TimeoutMonitor'.
2014-10-17 16:21:13,006 INFO [5441259c531b00710] root:138 - ENGINE: Removed handler for console events.
2014-10-17 16:21:13,006 INFO [5441259c531b00710] root:138 - ENGINE: Bus STOPPED
2014-10-17 16:21:13,006 INFO [5441259c531b00710] root:138 - ENGINE: Bus EXITING
2014-10-17 16:21:13,006 INFO [5441259c531b00710] root:138 - ENGINE: Bus EXITED

[jayannah]

Multiple combinations I tried and couldn't succeed. Finally restarted AWS instance and splunk web came up fine & running.

[jayannah]

me too got this issue today on splunk running on AWS windows OS. Any suggestions??

Till yesterday I was able to login. Just I tried to login and noticed splunk web was not running. I restarted with 'splunk restart', splunk web comes & get terminated within few seconds. The same error as above.