What is NSIV or Network socket inode validation ?

Question

What is NSIV or Network socket inode validation?

Answer

NSIV or Network socket inode validation is a 3rd party software from R-FX NETWORKS. Network socket inode validation is a rule-based utility intended to validate inodes against each LISTEN socket on a system.

NSIV is used as a Service monitor to verify the integrity of services on a given system. 

Since cPanel & WHM uses chkservd driver to determine whether a process is online and whether to restart the process. This can cause unknown conflict, and it is recommended that only 1 Service for monitoring is used.

We suggest simply removing this NSIV software, as it's not supported or handled by cPanel & WHM. We advise only using chkservd driver as we support its usage.  

More details can be found here for reference: 

http://www.rfxn.com/projects/network-socket-inode-validation/

https://docs.cpanel.net/knowledge-base/cpanel-product/tailwatch/#the-chkservd-driver