Nginx.conf
# Server globals
user nginx;
worker_processes auto;
worker_rlimit_nofile 65535;
error_log /var/log/nginx/error.log crit;
pid /var/run/nginx.pid;
# Worker config
events {
worker_connections 1024;
use epoll;
multi_accept on;
}
http {
# Main settings
sendfile on;
tcp_nopush on;
tcp_nodelay on;
client_header_timeout 1m;
client_body_timeout 1m;
client_header_buffer_size 2k;
client_body_buffer_size 256k;
client_max_body_size 256m;
large_client_header_buffers 4 8k;
send_timeout 30;
keepalive_timeout 90 90;
reset_timedout_connection on;
server_tokens off;
server_name_in_redirect off;
server_names_hash_max_size 512;
server_names_hash_bucket_size 512;
# Log format
log_format main '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
log_format bytes '$body_bytes_sent';
#access_log /var/log/nginx/access.log main;
access_log off;
# Mime settings
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Compression
gzip on;
gzip_comp_level 9;
gzip_min_length 512;
gzip_buffers 8 64k;
gzip_types text/plain text/css text/javascript text/js text/xml application/json application/javascript application/x-javascript application/xml application/xml+rss application/x-font-ttf application/x-ns-proxy-autoconfig image/svg+xml font/opentype;
gzip_proxied any;
gzip_disable "MSIE [1-6]\.";
# Proxy settings
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass_header Set-Cookie;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffers 32 4k;
# Cloudflare https://www.cloudflare.com/ips
set_real_ip_from 103.21.244.0/22;
set_real_ip_from 103.22.200.0/22;
set_real_ip_from 103.31.4.0/22;
set_real_ip_from 104.16.0.0/12;
set_real_ip_from 108.162.192.0/18;
set_real_ip_from 131.0.72.0/22;
set_real_ip_from 141.101.64.0/18;
set_real_ip_from 162.158.0.0/15;
set_real_ip_from 172.64.0.0/13;
set_real_ip_from 173.245.48.0/20;
set_real_ip_from 188.114.96.0/20;
set_real_ip_from 190.93.240.0/20;
set_real_ip_from 197.234.240.0/22;
set_real_ip_from 198.41.128.0/17;
#set_real_ip_from 2400:cb00::/32;
#set_real_ip_from 2606:4700::/32;
#set_real_ip_from 2803:f800::/32;
#set_real_ip_from 2405:b500::/32;
#set_real_ip_from 2405:8100::/32;
#set_real_ip_from 2c0f:f248::/32;
#set_real_ip_from 2a06:98c0::/29;
real_ip_header CF-Connecting-IP;
# SSL PCI Compliance
ssl_session_cache shared:SSL:10m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
# Error pages
error_page 403 /error/403.html;
error_page 404 /error/404.html;
error_page 502 503 504 /error/50x.html;
# Cache settings
proxy_cache_path /var/cache/nginx levels=2 keys_zone=cache:10m inactive=60m max_size=1024m;
proxy_cache_key "$host$request_uri $cookie_user";
proxy_temp_path /var/cache/nginx/temp;
proxy_ignore_headers Expires Cache-Control;
proxy_cache_use_stale error timeout invalid_header http_502;
proxy_cache_valid any 1d;
# Cache bypass
map $http_cookie $no_cache {
default 0;
~SESS 1;
~wordpress_logged_in 1;
}
# File cache settings
open_file_cache max=10000 inactive=30s;
open_file_cache_valid 60s;
open_file_cache_min_uses 2;
open_file_cache_errors off;
# Wildcard include
include /etc/nginx/conf.d/*.conf;
}
and this is a problem rewrite to php file in my domain.conf
location / {
location ~* ^.+\.(jpeg|jpg|png|gif|bmp|ico|svg|css|js)$ {
expires max;
}
location ~ [^/]\.php(/|$) {
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
if (!-f $document_root$fastcgi_script_name) {
return 404;
}
fastcgi_pass 127.0.0.1:9008;
fastcgi_index index.php;
include /etc/nginx/fastcgi_params;
}
}
location /config/config.txt {
rewrite ^(.*)$ /config/config.php;
}
The problem is when a lot of users connects to the server the cpu load of nginx worker proccess increase up to 100%
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
20113 nginx 20 0 72204 6156 952 S 65.4 0.2 0:20.69 nginx: worker process
20111 nginx 20 0 72048 6076 956 S 62.1 0.2 0:39.13 nginx: worker process
20110 nginx 20 0 71060 5216 952 S 57.8 0.1 0:19.15 nginx: worker process
20112 nginx 20 0 70996 5152 952 S 44.6 0.1 0:20.91 nginx: worker process
20114 nginx 20 0 70740 4736 964 R 21.5 0.1 0:20.35 nginx: worker process
20109 nginx 20 0 71260 5200 952 S 17.5 0.1 0:22.48 nginx: worker process
The php script uses readfile() function and return data acording several parameters (geo, user agent etc)
Can anybody help to solve the problem with the nginx cpu high load?
Update - the php code:
<?php
$time = 10e6;
$uid = 'uid';
$config_aa = 'aa/config_aa.js';
$config_bb = 'bb/config_bb.js';
$config_cc = 'cc/config_cc.js';
$config_other = 'other/config_other.json';
$COUNTRY_CODE = isset($_SERVER["HTTP_CF_IPCOUNTRY"]) ? $_SERVER["HTTP_CF_IPCOUNTRY"] : $COUNTRY_CODE = 'UNDEFINED';
if ($COUNTRY_CODE == 'AA' || $COUNTRY_CODE == 'UNDEFINED') {
if (round(microtime(true) * 1000) - $_GET[$uid] > $time ) {
header('Content-type: application/javascript');
readfile($config_aa);
readfile($config_bb);
exit;
}
else {
header('Content-type: application/javascript');
readfile($config_cc);
exit;
}
}
if ($COUNTRY_CODE == 'BB') {
if (round(microtime(true) * 1000) - $_GET[$uid] > $time ) {
header('Content-type: application/javascript');
readfile($config_aa);
readfile($config_bb);
exit;
}
else {
header('Content-type: application/javascript');
readfile($config_cc);
exit;
}
}
header('Content-type: no-javascripts-no-custom text/plain');
readfile($config_other);
exit;
?>
