Keepalived uses the IP Virtual Server (IPVS) kernel module to provide transport layer (Layer 4) load balancing, redirecting requests for network-based services to individual members of a server cluster. IPVS monitors the status of each server and uses the Virtual Router Redundancy Protocol (VRRP) to implement high availability.
The configuration file for the keepalived
daemon is /etc/keepalived/keepalived.conf
. This
file must be present on each server on which you configure
Keepalived for load balancing or high availability.
For more information, see
http://www.keepalived.org/documentation.html,
the
/usr/share/doc/keepalive-
documentation, and the version
keepalived(8)
and
keepalived.conf(5)
manual pages.