I am implementing almost 3 tomcat instances with the load balanced by apache httpd and mod_jk in on single machine. I also configured session affinity and session replication in the tomcat instances. So, even though, any one of the 3 tomcat instances goes down, there would be no worry.
But as I am balancing the load for 3 tomcat instances by a single apache httpd, if the apache httpd fails and if its service goes down, then it becomes again a single point of failure.
So, how to get rid of this problem? How can I do failover of the apache httpd which inturn works as the load balancer for multiple tomcats.