HA using RHEL 7.1 Clustering and configuring Active-Active Mode to access common storage

Hi,
We developed an application in C which shall use MariaDB (MySql) and httpd services. This application shall run on HA mode between two servers. In this regard we thought of configuring RHEL 7.1 clustering and to run our application in HA mode by integrating with the RHEL 7.1 cluster. So based on the understanding of the RHEL 7.1 clustering we framed few queries which we thought to be useful to solve our problem.

1. Whether RHEL 7.1 clustering will support for configuring customized user
   applications consists of executables?

2. Is there any mechanism to detect and sending
   notification message to passive node when master node fails??

3. How much
   time it will take to switch over and start executing in passive node when
   master node fails??

4. How to make passive node as Master node when Master
   node fails due to network failure??

5. How to detect and send notification
   message to passive node when one of the ethernet interface link goes
   donw/failure??

6. How to detect when heartbeat fails
   between the services??

7. We used Keepalived service for redundancy, but it is taking 3 seconds advertisement window time for switch over. Because of this delaywe are losing 3 seconds data. So, is there any solution to minimize this loss using keeplaived service or using RHEL 7.1 clustering.

8. Please provide procedure to deploy/enable
   user applications in RHEL clustering in order to monitor the node failure
   and switch over to the other node.

9.Please
provide the procedure how to detect node failure and send notification to
active node.
Regards,
BEL-Team