The problem is in my module mod_asis.so Open file in /proc/$PID/fd/ and don't close open file. lrwx------ 1 nobody nogroup 64 Jul 30 12:34 940 -> socket:[32218310] lr-x------ 1 nobody nogroup 64 Jul 30 12:34 941 -> /var/wwwns/index.asis lrwx------ 1 nobody nogroup 64 Jul 30 12:34 942 -> socket:[32412519] lr-x------ 1 nobody nogroup 64 Jul 30 12:34 943 -> /var/wwwns/index.asis lby micron - Nginx Mailing List - English