Hi to all,

I have a NGINX and configure it as load balancer (hash remote_IP) in front
of java application. When number of requests are normal all things good and
working fine but when requests go high NGINX has a delay to response to
each request. at this moment if I stop NGINX and requests straight to
application (java app and use tomcat as webserver) it works without delay
but when use NGINX it works with delay.

This is nginx.conf file:

user root;
worker_processes auto;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#pid logs/nginx.pid;

worker_rlimit_nofile 100000;
events {
worker_connections 40000;
# use epoll;
# multi_accept on;
}


http {
error_log /appserver/nginx/logs/error.log crit;
error_log /appserver/nginx/logs/error.log emerg;
error_log /appserver/nginx/logs/error.log error;
error_log /appserver/nginx/logs/error.log alert;
error_log /appserver/nginx/logs/debug.log debug;
error_log /appserver/nginx/logs/warn.log warn;

include mime.types;
default_type application/octet-stream;
fastcgi_read_timeout 100000;


log_format netdata '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent '
'$request_length $request_time
$upstream_response_time $bytes_sent '
'"$http_referer" "$http_user_agent" $upstream_addr '
'request_time=$request_time '
'upstream_response_time=$upstream_response_time '
'upstream_connect_time=$upstream_connect_time '
'upstream_header_time=$upstream_header_time '
'$msec';

access_log /appserver/nginx/logs/access.log netdata;

client_body_buffer_size 256k;
client_header_buffer_size 256k;
subrequest_output_buffer_size 128k;
proxy_buffer_size 128k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;
fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;
client_max_body_size 100M;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
access_log on;
keepalive_timeout 600;
client_body_timeout 600;
client_header_timeout 600;
send_timeout 10;
reset_timedout_connection on;
gzip on;
gzip_min_length 10240;
gzip_comp_level 1;
gzip_vary on;
gzip_disable msie6;
gzip_proxied expired no-cache no-store private auth;
gzip_types
text/css
text/javascript
text/xml
text/plain
text/x-component
application/javascript
application/x-javascript
application/json
application/xml
application/rss+xml
application/atom+xml
font/truetype
font/opentype
application/vnd.ms-fontobject
image/svg+xml;

upstream nginxBRANCH21 {
server x.x.x.21:448 max_fails=1 fail_timeout=15s;
}
upstream nginxBRANCH {
#server x.x.x.x:443 max_fails=1 fail_timeout=15s;
#server x.x.x.x:448 max_fails=1 fail_timeout=15s;
server x.x.x.x:448 max_fails=1 fail_timeout=15s;
server x.x.x.x:443 max_fails=1 fail_timeout=15s;
server x.x.x.x:443 max_fails=1 fail_timeout=15s;
server x.x.x.x:443 max_fails=1 fail_timeout=15s;
server x.x.x.x:443 max_fails=1 fail_timeout=15s;
server x.x.x.x:443 max_fails=1 fail_timeout=15s;
hash $remote_addr;
}
upstream server150 {
server x.x.x.x:443 max_fails=1 fail_timeout=15s;
}
upstream nginx_Z {
server x.x.x.x:448 max_fails=1 fail_timeout=15s;
}

server {
listen 80 default_server;
server_name _;
return 301 https://$host$request_uri;
}


server {
listen 443 ssl;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
# ssl on;
ssl_certificate /etc/ssl/certs/myssl.crt;
ssl_certificate_key /etc/ssl/private/myssl.key;

location / {
#if ( $remote_addr ~
"(x.x.x.x)|(x.x.x.x)|(x.x.x.x)|(x.x.x.x)|(x.x.x.x)|(x.x.x.x)|(x.x.x.x)|(x.x.x.x)|(x.x.x.x)"
){
# proxy_pass https://server150;
#}
proxy_pass https://nginxBRANCH21;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_set_header X_FORWARDED_PROTO https;
proxy_read_timeout 100000;
proxy_connect_timeout 100000;
}

location /FCBZ {
proxy_pass https://nginx_Z;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_set_header X_FORWARDED_PROTO https;
proxy_read_timeout 100000;
proxy_connect_timeout 100000;
}


}



server {
listen 9666;
location /basic_status {
stub_status;
}

}
}


Can anyone help me?
Thank you

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Hamid Gholami DevOps Engineer

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