I have six sites on my Debian_8_perfect_server_nginx. This morning I wanted to work on a new website. so I created a new site call new.website.com -- the existing website.com went into error 500. Here is the error log. the socket errors are new. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #000000; background-color: #ffffff} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #000000; background-color: #ffffff; min-height: 13.0px} span.s1 {font-variant-ligatures: no-common-ligatures} 2017/03/15 10:04:08 [alert] 11390#0: *3608 open socket #55 left in connection 12 2017/03/15 10:04:08 [alert] 11390#0: *3605 open socket #30 left in connection 17 2017/03/15 10:04:08 [alert] 11390#0: *3606 open socket #35 left in connection 22 2017/03/15 10:04:08 [alert] 11390#0: *3609 open socket #56 left in connection 23 2017/03/15 10:04:08 [alert] 11390#0: *3604 open socket #29 left in connection 26 2017/03/15 10:04:08 [alert] 11390#0: *3607 open socket #54 left in connection 31 2017/03/15 10:04:08 [alert] 11390#0: aborting How do I fix? the other sites are working fine.
I did not had that error yet. What you can try is that you stop nginx and then start it again (not restart) and you might try the same for the php fpm service.