“GitLab is not responding.” 502 on Ubuntu 14.04 after starting server

Question

I have just installed GitLab on a fresh Ubuntu 14.04 64 bit server. I did so using the Omnibus package as indicated in the download page. There were no error messages during

Answer 1

There is a lag of some 5 minutes from the moment gitlab is started/restarted to the point when it is actually able to process requests. Here is an example from the log:

2015-01-08_09:00:57.37719 [13326] 08 Jan 10:00:57.377 * The server is now ready to accept connections on port 0
2015-01-08_09:00:57.37722 [13326] 08 Jan 10:00:57.377 * The server is now ready to accept connections at /var/opt/gitlab/redis/redis.socket

[...]

==> /var/log/gitlab/unicorn/unicorn_stderr.log <==
I, [2015-01-08T10:04:48.676879 #13351]  INFO -- : listening on addr=127.0.0.1:8080 fd=11
I, [2015-01-08T10:04:48.677663 #13351]  INFO -- : unlinking existing socket=/var/opt/gitlab/gitlab-rails/sockets/gitlab.socket
I, [2015-01-08T10:04:48.690283 #13351]  INFO -- : listening on addr=/var/opt/gitlab/gitlab-rails/sockets/gitlab.socket fd=12
I, [2015-01-08T10:04:48.716769 #13413]  INFO -- : worker=0 spawned pid=13413
I, [2015-01-08T10:04:48.735878 #13351]  INFO -- : master process ready
I, [2015-01-08T10:04:48.846635 #13416]  INFO -- : worker=1 spawned pid=13416
I, [2015-01-08T10:04:48.837438 #13413]  INFO -- : worker=0 ready
I, [2015-01-08T10:04:48.863110 #13416]  INFO -- : worker=1 ready

Before Unicorn reports that it is up and running on port 8080, the "GitLab is not responding" message will be displayed. So all one has to do is wait.