Varnish + nginx + ELB 499 responses
问题 I am having varnish 4 server working with nginx as reverse proxy connected to ELB. Every 2 days or so my server is stop responding and I see 499 responses in nginx access.log restarting nginx is solving the problem. Why am I started to get these 499 responses? Why restarting nginx solving the issue? 回答1: I solved my issue after understanding two facts: 1) ELB instance has dynamic DNS name 2) nginx resolve DNS names only on reload/restart The problem was that the ELB changed its IP address and