Can you please restart VAMI again and check this file:
\opt\vmware\var\log\lighttpd\error.log
Then please check what the PID is that is referenced in the log, for example in the log you submitted I see:
2016-09-22 11:45:26: (/build/mts/release/bora-1191928/vadk/src/vami/apps/lighttpd/1.4.29/src/log.c.166) server started
2016-09-22 12:43:38: (/build/mts/release/bora-1191928/vadk/src/vami/apps/lighttpd/1.4.29/src/server.c.1519) server stopped by UID = 0 PID = 8153
The other issue in the logs is that you have errors such as these:
2016-09-22T11:45:02+00:00 localhost logger: vami_set_hostname, line 112: Host name has been set to localhost.localdom
2016-09-22T11:45:02+00:00 localhost logger: vami_set_hostname, line 79: Inaccessible file: vami_access -rw /etc/mailname failed.
2016-09-24T12:11:44+00:00 localhost sshd[13382]: Failed password for root from 174.50.122.234 port 58882 ssh2
2016-09-24T12:11:50+00:00 localhost sshd[13384]: Failed password for root from 174.50.122.234 port 59332 ssh2
2016-09-24T12:11:56+00:00 localhost sshd[13386]: Failed password for root from 174.50.122.234 port 59789 ssh2
2016-09-24T12:12:01+00:00 localhost sshd[13388]: Failed password for root from 174.50.122.234 port 60253 ssh2
2016-09-24T12:12:07+00:00 localhost sshd[13390]: Failed password for root from 174.50.122.234 port 60596 ssh2
2016-09-24T12:12:13+00:00 localhost sshd[13392]: Failed password for root from 174.50.122.234 port 32816 ssh2
2016-09-24T12:12:19+00:00 localhost sshd[13394]: Failed password for root from 174.50.122.234 port 33232 ssh2
2016-09-24T12:12:25+00:00 localhost sshd[13396]: Failed password for root from 174.50.122.234 port 33671 ssh2
2016-09-24T12:12:30+00:00 localhost sshd[13398]: Failed password for root from 174.50.122.234 port 34132 ssh2
2016-09-24T12:12:37+00:00 localhost sshd[13400]: Failed password for root from 174.50.122.234 port 34549 ssh2
2016-09-24T12:12:42+00:00 localhost sshd[13402]: Failed password for root from 174.50.122.234 port 35017 ssh2
2016-09-24T12:12:48+00:00 localhost sshd[13404]: Failed password for root from 174.50.122.234 port 35433 ssh2
2016-09-23T13:00:36+00:00 localhost sshd[7204]: reverse mapping checking getaddrinfo for 191-24-178-184.user.vivozap.com.br [191.24.178.184] failed - POSSIBLE BREAK-IN ATTEMPT!
2016-09-23T14:02:22+00:00 localhost sshd[7429]: reverse mapping checking getaddrinfo for 179-129-251-56.user.vivozap.com.br [179.129.251.56] failed - POSSIBLE BREAK-IN ATTEMPT!
2016-09-23T14:02:30+00:00 localhost sshd[7432]: reverse mapping checking getaddrinfo for 179-129-251-56.user.vivozap.com.br [179.129.251.56] failed - POSSIBLE BREAK-IN ATTEMPT!
Are those IP addresses known to you as it suggests some form of malicious login attempts to your VC, please check that the VC is not publicly accessible and behind a firewall.
I hope these logs excerpts are useful