As we have seen in the last chapter, JK uses the AJP13 protocol between the load balancer and worker nodes. In comparison to JK, mod_cluster allows us to secure its communication channels.
In design, mod_cluster uses three channels for communication: the advertising channel, the management channel, and the proxy channel. mod_cluster allows us to secure the communication in the management and proxy channels.
The following is the deployment diagram:
As we can see from the preceding diagram, SSL communications can be enabled in the following three places:
Communication between users and httpd
The mod_cluster management channel communication between httpd and EAP6
The mod_cluster proxy channel communication between httpd and EAP6
We learned how to enable SSL communication between users and httpd in the previous chapter. We need to generate a self-signed certificate and configure mod_ssl in httpd to use the certificate. The following is the configuration that we used in the...