Load balancing can help with almost any kind of service, including HTTP, DNS, FTP, POP/IMAP, RDP and SMTP.
There are a number of open source load balancing applications, but one …
Centreon Distributed Monitoring
Nagios / Centreon Distributed Monitoring – Clustering
Document referral to Centreon Wiki
There are many ways nagios can be used to load the balance, the basic architeture
is Master/Slave with …