On the previous post we were talking about simple dns failover using two nameservers / ip addresses, now we will move the conversation to the more exciting one, we will use frontend server to control the backend servers, here is the illustration.
One frontend server decides whether to put the visitor to the server A or server B, here i am using NginX as frontend and also NginX as backend server.
Why don’t you use another web server as the backend?
I like NginX, for me it is easy to understand NginX configuration than another web server. Before we start to configure it, install NginX on the frontend and backend servers. I’m using CentOS 5 by the way.
wget http://pkgs.serversreview.net/files/nginx-1.1.13.tar.gz tar -zxvf nginx-1.1.13.tar.gz cd nginx-1.1.13 useradd www passwd www ./configure --prefix=/usr --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx/nginx.pid --lock-path=/var/lock/nginx.lock --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/tmp/nginx/client/ --http-proxy-temp-path=/var/tmp/nginx/proxy/ --http-fastcgi-temp-path=/var/tmp/nginx/fcgi/ --user=www --group=www --with-http_ssl_module --with-http_flv_module --with-http_mp4_module --with-http_gzip_static_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module --with-http_image_filter_module --with-http_geoip_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_random_index_module --with-http_secure_link_module --with-http_degradation_module --with-http_stub_status_module --with-http_perl_module --with-mail --with-file-aio --with-mail_ssl_module --with-ipv6 make make install
in the configurations above, as usual i am using “www” user and group for NginX. Next download NginX init script and make it executable.
