Grass Valley iControl V.4.43 - Manual (Page 591)

iControl
User Guide
581
The Redundancy Configuration Form contains the following information about the
Redundancy Group and its Application Servers.
The Main Application Server stops responding or is too
overloaded to answer the Heartbeat request quickly
enough. In this case, pinging between the Backup and the Main
Application Servers is still possible but not quick enough.
The Main Application Server loses power. The Main Application Server shuts down because of a power loss
to that Application Server.
IMPORTANT: Make sure the Main Application Server’s resource usage is within
acceptable parameters
Prior to enabling the Auto-failover feature, the operator should make sure that
the Application resource usage on the Main Application Server (e.g. CPU usage,
RAM usage) is within acceptable limits so that it can respond to Heartbeat
requests from the Backup Application Server monitoring it.
Parameter Description Parameter range User
editable?
Visible on
Main
Application
Server?
Visible on
Backup
Application
Server?
Role The redundancy role of an
Application Server Main, Backup Yes Yes Yes
Host name Host name of the Application
Server Alphanumeric Yes, from
elsewhere
in Webmin Yes Yes
Configured IP Configured IP address of the
Application Server (retained
after an Auto-failover or Manual
Takeover has changed the
current IP)
IPv4 address
(
xxx.xxx.xxx.xxx )
Yes, from
elsewhere
in Webmin Yes Yes
Current IP Current IP address of the
Application Server IPv4 address
(
xxx.xxx.xxx.xxx ) (or
Unknown if Application
Server unreachable)
No Yes Yes
Operational
state The operational state of an
Application Server Main: Offline, Online
Backup: Standby, Online
No Yes Yes
(Continued)
Condition Details