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Load balancing

Load balancing

The Apache HTTP Server, with the mod_proxy_balancer and JK Connector (mod_jk) modules, is used to load balance a cluster of servers.

Setting up the Apache HTTP Server

  1. Download the latest version of Apache from http://httpd.apache.org/download.cgi.
  2. If you download the source code and configure it manually, enable SSL as follows: 
    $ {APACHE_HTTP_SERVER_SRC_DIR}/configure --enable-ssl
  --enable-so -enable-mods-shared="proxy \
  proxy_http proxy_ftp proxy_connect headers cache 
  disk_cache mem_cache"
  --prefix={INSTALL_FULL_PATH}
$ {APACHE_HTTP_SERVER_SRC_DIR}/make
$ {APACHE_HTTP_SERVER_SRC_DIR}/make install
  3. Set up SSL for the Apache server:
    1. Create an SSL key and certificate. For more information, see http://www.informit.com/articles/article.aspx?p=30115.
    2. Copy the SSL key to APACHE_HOME\conf, and rename the file to "server.key".
    3. Copy the SSL certificate to APACHE_HOME\conf, and rename the file to "server.crt".
  4. Enter the following to start the Apache server with SSL enabled: 
    {APACHE_HOME}/bin/apachectl startssl
  5. Enter the following to stop the server: 
    {APACHE_HOME}/bin/apachectl stop