Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Continental Cluster
Building the ContinentalClusters Configuration
Chapter 5 229
Some events ####
#### are noteworthy at the time they occur, and some are
noteworthy ####
#### when they persist over time. Setting the elapsed time
to zero ####
#### results in a message being sent as soon as the event
takes place. ####
#### Setting the elaspsed time to 5 minutes results in a
message ####
#### being sent when the condition has persisted for 5
minutes. ####
## ##
####
#### An alert is intended as informational only. Alerts may
be sent ####
#### for any type of cluster condition. For an alert, a
notification ####
#### is sent to a system administrator or other
destination. Alerts ####
#### are not intended to indicate the need for recovery.
The ####
# # # # c m r e c o v e r c l ( 1 m ) c o m m a n d i s d i s a b l e d .
####
## ##
####
#### An alarm is an indication that a condition exists that
may ####
#### require recovery. For an alarm, a notification is
sent, and ####
#### in addition, the cmrecovercl(1m) command is enabled
for immediate ####
#### execution, allowing the administrator to carry out
cluster ####
#### recovery. An alarm can only be defined for an
UNREACHABLE or ####
#### DOWN condition in the monitored
cluster. ####
## ##
####
#### A notification defines a message that is appended to
the ####
#### log file /var/adm/cmconcl/eventlog and sent to other
####
#### specified destinations, including email addresses,
SNMP traps, ####
#### the system console, or the syslog file. The message