Hello, 

After install observium Community Edition 17.9.0 in Centos 7 and Nginx, I am not able to login for first time using web interface.

The adduser script added correctly the admin user (also I created 3 more users) with level 10.

The weird is there is not record of the action in any log.

I did research and found similar issue about 5 years ago where the problem was the disk or partition was full, this is not my case, my / filesystem is 47% and /temp filesystem is 2%.

other possibility is the session_start() can have troubles to write, but without log it's only a guess.

I want to try set session_save_path() just before session_start() to see if this solve the issue.

if you think my idea can work, in what file where should I put the variable?

What do you think? any other idea?