Configure mod_proxy#2

Configure mod_proxy#2 2015/08/03

	Enable mod_proxy module to configure reverse proxy settings. This example is based on the environment below. (1) www.server.world     [10.0.0.31]     - Web Server#1 (2) node01.server.world     [10.0.0.51]     - Web Server#2 This example set servers that requests to (1)Web server forward to / on (2)webserver.
[1]	mod_proxy is included in httpd package and it is enabled by default, so it's possible to configure quickly.

# module is enabled by default [root@www ~]#  grep "mod_proxy" /etc/httpd/conf.modules.d/00-proxy.conf  LoadModule proxy_module modules/mod_proxy.so LoadModule proxy_ajp_module modules/mod_proxy_ajp.so ..... LoadModule proxy_http_module modules/mod_proxy_http.so LoadModule proxy_scgi_module modules/mod_proxy_scgi.so [root@www ~]#  vi /etc/httpd/conf.d/r_proxy.conf # create new <IfModule mod_proxy.c>     ProxyRequests Off     <Proxy *>         Require all granted     </Proxy>      # backend server and forwarded path     ProxyPass / http://node01.server.world/     ProxyPassReverse / http://node01.server.world/ </IfModule> [root@www ~]#  systemctl restart httpd

Access to frontend server to make sure backend server responses like follows.

[2]

It's possible to configure load balancing settings. (1) www.server.world     [10.0.0.31]     - Web Server#1 (2) node01.server.world     [10.0.0.51]     - Web Server#2 (3) node02.server.world     [10.0.0.52]     - Web Server#3 This example shows to configure servers that http requests to (1)Webserver are forwarded to (2)Webserver and (3)Webserver.

[root@www ~]#  vi /etc/httpd/conf.d/r_proxy.conf # create new <IfModule mod_proxy.c>     ProxyRequests Off     <Proxy *>         Require all granted     </Proxy>      # specify the way of load balancing with "lbmethod". it's also possible to set "bytraffic".     ProxyPass / balancer://cluster lbmethod=byrequests     <proxy balancer://cluster>         BalancerMember http://node01.server.world/ loadfactor=1         BalancerMember http://node02.server.world/ loadfactor=1     </proxy> </IfModule> [root@www ~]#  systemctl restart httpd

Access to frontend server to make sure backend servers responses like follows.