Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.0 Overview page 71

Function
LVS
Components
gnbd_serv
pulse
lvsd
ipvsadm
Cluster Components
Description
A server daemon that allows a node
to export local storage over the
network.
This is the controlling process which
starts all other daemons related to
LVS routers. At boot time, the
daemon is started by the
/etc/rc.d/init.d/pulse
then reads the configuration file
/etc/sysconfig/ha/lvs.cf
active LVS router,
pulse
LVS daemon. On the backup router,
determines the health of the
pulse
active router by executing a simple
heartbeat at a user-configurable
interval. If the active LVS router fails
to respond after a user-configurable
interval, it initiates failover. During
failover, on the backup LVS
pulse
router instructs the
pulse
the active LVS router to shut down all
LVS services, starts the
program to reassign the floating IP
addresses to the backup LVS router's
MAC address, and starts the
daemon.
The daemon runs on the active
lvs
LVS router once called by
reads the configuration file
/etc/sysconfig/ha/lvs.cf
the utility to build and
ipvsadm
maintain the IPVS routing table, and
assigns a process for each
nanny
configured LVS service. If
reports a real server is down,
instructs the
ipvsadm
the real server from the IPVS routing
table.
This service updates the IPVS routing
table in the kernel. The
sets up and administers LVS by
calling to add, change, or
ipvsadm
delete entries in the IPVS routing
table.
script. It
. On the
starts the
daemon on
send_arp
lvs
. It
pulse
, calls
nanny
lvs
utility to remove
daemon
lvs
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