zenoss5 app stuck at 'starting service' upon host reboot

before I delete the app and redeploy, i wonder if there are other remedies.

the control center shows that the app is in perpetual 'starting service' state. stop it and start did not help.

thanks!

here are the newest log entries

ALL EVENTS
0 to 100 of 500 available for paging
message @timestamp
W0415 14:16:17.715288 00001 controller.go:777] Health check store_answering failed. 2015-04-15T10:16:17.716-04:00
I0415 14:16:17.118393 00001 controller.go:677] Running prereq command: su - zenoss -c '/opt/zenoss/bin/python /opt/zenoss/Products/ZenUtils/ZenDB.py -... 2015-04-15T10:16:17.137-04:00
I0415 14:16:11.431969 00045 pool.go:34] Unable to connect to consumer ws://localhost:8080/ws/metrics/store 2015-04-15T10:16:17.075-04:00
I0415 14:16:10.431435 00045 pool.go:34] Unable to connect to consumer ws://localhost:8080/ws/metrics/store 2015-04-15T10:16:17.074-04:00
W0415 14:16:16.874435 00001 controller.go:682] Not starting service yet, waiting on prereq: MariaDB connectivity 2015-04-15T10:16:16.875-04:00
I0415 14:16:16.850372 00001 controller.go:677] Running prereq command: su - zenoss -c '/opt/zenoss/bin/python /opt/zenoss/Products/ZenUtils/ZenDB.py -... 2015-04-15T10:16:16.857-04:00
I0415 14:16:16.854268 00001 controller.go:677] Running prereq command: export TERM=xterm; mysql --host=127.0.0.1 --port=3306 -c ';' 2>&1 | grep... 2015-04-15T10:16:16.856-04:00
W0415 14:16:16.672386 00001 controller.go:682] Not starting service yet, waiting on prereq: MariaDB connectivity 2015-04-15T10:16:16.673-04:00
I0415 14:16:16.575296 00001 controller.go:677] Running prereq command: su - zenoss -c '/opt/zenoss/bin/python /opt/zenoss/Products/ZenUtils/ZenDB.py -... 2015-04-15T10:16:16.576-04:00
W0415 14:16:16.465338 00001 controller.go:777] Health check mariadb_answering failed. 2015-04-15T10:16:16.466-04:00
W0415 14:16:16.457064 00001 controller.go:777] Health check mariadb_answering failed. 2015-04-15T10:16:16.458-04:00
W0415 14:16:16.358608 00001 controller.go:777] Health check running failed. 2015-04-15T10:16:16.359-04:00
W0415 14:16:16.356712 00001 controller.go:777] Health check workers_running failed. 2015-04-15T10:16:16.358-04:00
W0415 14:16:16.215300 00001 controller.go:682] Not starting service yet, waiting on prereq: MariaDB connectivity 2015-04-15T10:16:16.275-04:00
W0415 14:16:16.219494 00001 controller.go:682] Not starting service yet, waiting on prereq: MariaDB connectivity 2015-04-15T10:16:16.220-04:00
W0415 14:16:16.184316 00001 controller.go:777] Health check running failed. 2015-04-15T10:16:16.189-04:00
I0415 14:16:16.122998 00001 controller.go:677] Running prereq command: su - zenoss -c '/opt/zenoss/bin/python /opt/zenoss/Products/ZenUtils/ZenDB.py -... 2015-04-15T10:16:16.124-04:00
I0415 14:16:16.119269 00001 controller.go:677] Running prereq command: su - zenoss -c '/opt/zenoss/bin/python /opt/zenoss/Products/ZenUtils/ZenDB.py -... 2015-04-15T10:16:16.122-04:00
W0415 14:16:15.859869 00001 controller.go:682] Not starting service yet, waiting on prereq: MariaDB connectivity 2015-04-15T10:16:15.976-04:00
W0415 14:16:15.942425 00001 controller.go:682] Not starting service yet, waiting on prereq: MariaDB connectivity 2015-04-15T10:16:15.975-04:00
I0415 14:16:15.850997 00001 controller.go:677] Running prereq command: export TERM=xterm; mysql --host=127.0.0.1 --port=3306 -c ';' 2>&1 | grep... 2015-04-15T10:16:15.853-04:00
I0415 14:16:15.850378 00001 controller.go:677] Running prereq command: su - zenoss -c '/opt/zenoss/bin/python /opt/zenoss/Products/ZenUtils/ZenDB.py -... 2015-04-15T10:16:15.853-04:00
W0415 14:16:15.665192 00001 controller.go:682] Not starting service yet, waiting on prereq: MariaDB connectivity 2015-04-15T10:16:15.665-04:00
I0415 14:16:15.574824 00001 controller.go:677] Running prereq command: su - zenoss -c '/opt/zenoss/bin/python /opt/zenoss/Products/ZenUtils/ZenDB.py -... 2015-04-15T10:16:15.576-04:00