Then add domain name resolution in the local hosts, and then visit have a look: There are three websites: We set up a file under the entry folder of www2 and www3 index.php The contents of the document are as follows: ' ServerName ErrorLog "d:/wamp/logs/CustomLog "d:/wamp/logs/combined ServerAdmin ErrorLog "d:/wamp/logs/CustomLog "d:/wamp/logs/combined Now we do load balancing test directly under the local apache service.Īt nf Add the following configuration to: If there are multiple sites (domain names) on a server, you need to specify some domain names to use reverse proxy, then you can transfer the configuration to VirtualHost (cancel at the same time nf balancer settings in). Practical operationīefore profile nf Setting up a reverse proxy in affects the entire site on the server.
#APACHE PROXY VS REVERSE PROXY MOD#
This is through the mod of Apache httpd_ proxy_ Hcheck module. In general, it is more useful to dynamically check the health of threads out of band. Tested: balancer manager can only be placed in configuration file nf It is not valid in VirtualHost Dynamic health checkīefore the httpd reverse agent makes a request to a thread, it can "test" whether the thread is available by setting the parameter ping for the thread using ProxyPass. In the Apache httpd configuration file, add:
You can not only display parameters, but also dynamically reconfigure most parameters at run time, including adding new members to existing equalizers.
Equalizer ManagerĪpache's built-in balancer manager can display the current configuration and working status. Always try the load balancer set (and their respective redundancy and hot spares) in the lowest to highest order. If all threads and sparing in the load balancer set are not available, hot spare is enabled. A thread is considered unavailable if it is running out, stopped, or in an error / failure state.
#APACHE PROXY VS REVERSE PROXY CODE#
The above code proxies the request starting with "/ images /" to two back-end servers defined by BalancerMembers, and uses ProxySet to define the load balancing policy.Įqualizer members are sometimes referred to as workers Balancer and balancermember configuration
Through balancer: / /, an equalizer is set to reverse proxy requests to multiple back-end servers. In the above example, all requests starting with "/ images" are proxied to the specified backend, and other requests are processed locally ProxyPass "/" "" If you want to set the specified url to be reverse proxy, set it as follows: ProxyPass "/images" "" To ensure that the "Location" header generated from the back-end server is modified to point to the reverse proxy instead of returning to itself (forming a dead cycle), the ProxyPassReverse instruction needs to be added: ProxyPass "/" "" Let's take a simple example of reverse proxy all requests ("/") to a server: ProxyPass "/" "" Instructions needed: ProxyPass, ProxyPassReverse, BalancerMember Implement simple reverse proxyĭirective ProxyPass maps input requests to back-end servers (or server clusters). Mod_proxy provides proxy function, mod_proxy_balancer provides load balancing function, mod_proxy_http enables the proxy server to support the HTTP protocol. Mod_lbmethod module is on-demand, if only on-demand, mod is on_ lbmethod_ bytraffic.so that will do