When I set my reverse proxy to forward from it's own port 80 to it's own port 8080, I do so, i get the following warning
2016/03/28 22:05:59 [alert] 4193#0: 512 worker_connections are not enough
which is presumably the result of an infinite loop.
In the accepted answer for Nginx Config: Front-End Reverse Proxy to Another Port, the user wrote "I'm assuming that nginx is not the server listening on port 5010 as well as 80, correct?" Is that because reverse proxies can't forward to themselves? Or is there another reason why this infinite loop is happening, and that comment was just a red herring?
Below is my nginx.conf. I get the warning when I go to router.example.com. When I remove what's between #### BEGIN BAD LINES ####
, it works well.
user root;
worker_processes 1;
worker_cpu_affinity 0101;
master_process off;
worker_priority 10;
error_log /tmp/var/log/nginx/error.log;
pid /tmp/var/run/nginx.pid;
worker_rlimit_nofile 8192;
events {
worker_connections 512;
}
http {
log_format main '$remote_addr - $remote_user [$time_local] $status '
'"$request" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
# Because end of http://nginx.org/en/docs/http/server_names.html
server_names_hash_bucket_size 64;
# From NixCraft
# http://www.cyberciti.biz/tips/using-nginx-as-reverse-proxy.html
# Host required
server {
listen 80 default_server;
server_name "";
return 444;
}
#### BEGIN BAD LINES ####
## Start router proxy ##
server {
listen 80;
server_name router.example.com
tomatopaste.example.com;
access_log /var/log/nginx/log/router.example.access.log main;
error_log /var/log/nginx/log/router.example.error.log;
## send request back to apache1 ##
location / {
proxy_pass http://192.168.1.1:8080/;
proxy_redirect default;
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
## End ##
#### END BAD LINES ####
## Start primary proxy ##
server {
listen 80;
server_name jira.example.com
confluence.example.com
stash.example.com
cacti.example.com;
access_log /var/log/nginx/log/lamp.example.access.log main;
error_log /var/log/nginx/log/lamp.example.error.log;
## send request back to apache1 ##
location / {
proxy_pass http://192.168.1.99/;
proxy_redirect default;
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
## End ##
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
# Websockets
server {
listen 8686;
server_name other.example.com;
location / {
proxy_pass http://192.168.1.99:8686;
proxy_redirect default;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
}
}