Couchbase community 5.1.1 server not starting


I have installed a couchbase-server-community-5.1.1 server on centos6.
Installation was successful, but unable to see the webpage on 8091 port.
I see this error

Failed to connect to port 80: Connection refused

Looks like the server is not starting or starting but crashing immediately.
I have collected info using “cbcollect_info” tool and have uploaded here (
or (

Please help in resolving this.
Thanks in advance.

Port 80 would be the wrong port though. Port 8091.

Thanks @ingenthr.

Restart of the host helped resolve the issue.