Specifications

Set Block Resource Failover On:
system administrator before allowing LifeKeeper to perform a failover recovery of a system that it
detects as failed.
Use the lk_confirmso command to confirm the failover. By default, the administrator has 10
minutes to run this command. This time can be changed by modifying the CONFIRMSOTO setting in
/etc/default/LifeKeeper. If the administrator does not run the lk_confirmso command within the
time allowed, the failover will either proceed or be blocked. By default, the failover will proceed. This
behavior can be changed by modifying the COMFIRMSODEF setting in /etc/default/LifeKeeper.
Example: If you wish to block automatic failovers completely, then you should set the Confirm
Failover On option in the Properties panel and also set CONFIRMSODEF to 1 (block failover) and
CONFIRMSOTO to 0 (do not wait to decide on the failover action).
When to select this setting:
This setting is used in most Disaster Recovery and other WAN configurations where the
configuration does not include redundant heartbeat communications paths.
In a regular site (non multi-site cluster), open the Properties page from one server and then select the
server that you want the Confirm Failover flag to be set on.
For a Multi-siteWANconfiguration:Enablemanual failover confirmation
For a Multi-siteLANconfiguration: Do notenable manual failover confirmation
In a multi-site cluster environment – from the non-disaster system, select the DR system and check
the set confirm failover flag. You will need to open the Properties panel and select this setting for
each non-disaster server in the cluster.
Set Block Resource Failover On:
Definition - By default, all resource failures will result in a recover event that will attempt to recover
the failed resource on the local system. If local recovery fails or is not enabled, then LifeKeeper
transfers the resource hierarchy to the next highest priority system for which the resource is defined.
However, if this setting is selected on a designated system(s), all resource transfers due to a
resource failure will be blocked from the given system.
When the setting is enabled, the following message is logged:
Local recovery failure, failover blocked, MANUAL INTERVENTION REQUIRED
Conditions/Considerations:
In a Multi-site configuration,do not selectBlock Failover for any server in the configuration.
Remember: This setting willnotaffect failover behavior if there is a complete system failure. It will
only block failovers due to resource failures.
NFS Client Options
When setting up a LifeKeeper protected NFS server, how the NFS clients connect to that server can
make a significant impact on the speed of reconnection on failover.
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