Nginx together with haproxy does not point the root index.php file - php

Question

I have 1 local haproxy server (10.10.1.18) that is used for loadbalance 2 nginx local webservers (web1=10.10.1.21,web2=10.10.1.22).
I can reach local ips of web servers to the index.php file successfully like that http://10.10.1.21/ and http://10.10.1.22/
However, when I point local ip of haproxy http://10.10.1.18/, it only brings the index.html file instead of index.php file. We also have a domainname that points the public ip to the haproxy but http://example.uni.edu brings again the index.html file and not index.php file
So I don't think it's about public vs local ip but rather haproxy or nginx configuration
/etc/haproxy/haproxy.cfg
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
#
# 1) configure syslog to accept network log events. This is done
# by adding the '-r' option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
#
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
#
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 10000
user haproxy
group haproxy
daemon
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
#use if not designated in their block
#---------------------------------------------------------------------
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 10000
#---------------------------------------------------------------------
#HAProxy statistics backend
#---------------------------------------------------------------------
listen haproxy3-monitoring *:80
mode http
option forwardfor except 127.0.0.1
option httpclose
stats enable
stats show-legends
stats refresh 5s
stats uri /stats
stats realm Haproxy\ Statistics
stats auth username:password
stats admin if TRUE
#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
frontend main
bind *:80
default_backend webapp-main
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend webapp-main
balance roundrobin
option httpchk HEAD / HTTP/1.1\r\nHost:\ example.uni.edu
server web1 10.10.1.21:80 check
server web2 10.10.1.22:80 check
web1 nginx - /etc/nginx/conf.d/default.conf
server {
listen 80;
server_name 10.10.1.21;
# note that these lines are originally from the "location /" block
root /usr/share/nginx/html;
index index.php index.html index.htm;
location / {
try_files $uri $uri/ =404;
}
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
location ~ [^/]\.php(/|$) {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_index index.php;
fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
include fastcgi_params;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
}
location /dataroot/ {
internal;
alias /var/moodledata/; # ensure the path ends with /
}
location /cachedir/ {
internal;
alias /var/moodledata/cache/; # ensure the path ends with /
}
location /localcachedir/ {
internal;
alias /var/moodledata/localcache/; # ensure the path ends with /
}
location /tempdir/ {
internal;
alias /var/moodledata/temp/; # ensure the path ends with /
}
location /filedir/ {
internal;
alias /var/moodledata/filedir/; # ensure the path ends with /
}
}
web2 has the same configs as web1 along with its own local ip.
When I point directly the index.php http://10.10.1.18/index.php it downloads the index.php file and gives
503 Service Unavailable
Anybody has similar experience issues like this?

Answer 1

Finally it worked out, please follow these steps:
do not use config files under /etc/nginx/conf.d/ only use 1 config file /etc/nginx/nginx.conf like this
# For more information on configuration, see:
# * Official English Documentation: http://nginx.org/en/docs/
# * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
events {
worker_connections 8192;
}
http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
tcp_nopush on;
sendfile on;
keepalive_timeout 65;
types_hash_max_size 2048;
client_body_buffer_size 10K;
client_header_buffer_size 1k;
client_max_body_size 512m;
large_client_header_buffers 2 1k;
client_body_timeout 1200;
client_header_timeout 1200;
send_timeout 100;
include /etc/nginx/mime.types;
default_type application/octet-stream;
server {
listen 80;
server_name example.uni.edu;
# note that these lines are originally from the "location /" block
root /usr/share/nginx/html;
index index.php index.html index.htm;
location / {
root /usr/share/nginx/html;
try_files $uri $uri/ =404;
index index.php;
}
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
location ~ [^/]\.php(/|$) {
root /usr/share/nginx/html;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_index index.php;
fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
#fastcgi_pass 127.0.0.1:9000;
include fastcgi_params;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
}
###################### For Moodle Application ##################
location /dataroot/ {
internal;
alias /var/moodledata/; # ensure the path ends with /
}
location /cachedir/ {
internal;
alias /var/moodledata/cache/; # ensure the path ends with /
}
location /localcachedir/ {
internal;
alias /var/moodledata/localcache/; # ensure the path ends with /
}
location /tempdir/ {
internal;
alias /var/moodledata/temp/; # ensure the path ends with /
}
location /filedir/ {
internal;
alias /var/moodledata/filedir/; # ensure the path ends with /
}
###################### For Moodle Application ##################
}
}
Make sure you use a valid haproxy config along with 2 different ports 80 is for backend and 8080 is to monitor the stats
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
#
# 1) configure syslog to accept network log events. This is done
# by adding the '-r' option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
#
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
#
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 10000
user haproxy
group haproxy
daemon
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
#use if not designated in their block
#---------------------------------------------------------------------
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 10000
#---------------------------------------------------------------------
#HAProxy statistics backend
#---------------------------------------------------------------------
listen haproxy3-monitoring *:8080
mode http
option forwardfor
option httpclose
stats enable
stats show-legends
stats refresh 5s
stats uri /stats
stats realm Haproxy\ Statistics
stats auth username:password
stats admin if TRUE
#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
frontend main
bind *:80
option http-server-close
option forwardfor
default_backend webapp-main
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend webapp-main
balance source
option httpchk HEAD / HTTP/1.1\r\nHost:\ example.uni.edu
server web1 10.10.1.21:80 check
server web2 10.10.1.22:80 check
Now you are fine to lookup your stats http://10.10.1.18:8080/ or http://example.uni.edu:8080/
You can also browse your application http://example.uni.edu
Note: Make sure you public ip points to your haproxy server successfully!