Hardware health
Use the information in this section to obtain notifications based on the hardware health of the appliance.
First you must prepare the SNMP Manager to receive Uncategorized
traps (CASTIRON-IA-MIB::ciIaUncategorizedEv .1.3.6.1.4.1.13336.2.2.2.1.1.10
#1). Next you configure the SNMP Manager to poll for the following
items and generate notifications when the conditions are met:
Parameters to Monitor | Recommended Thresholds | Snmp OID |
---|---|---|
Garbage Collections | Alert if this value changes quickly (by more than 6 counts in a 1-minute time period). | CASTIRON-IA-MIB::ciIaResNbrGarbageCollects .1.3.6.1.4.1.13336.2.2.2.1.1.2.1.0 |
Memory Usage | Alert if this value goes over 80% (raw value of 8000). | CASTIRON-IA-MIB::ciIaResPctMemoryUsed .1.3.6.1.4.1.13336.2.2.2.1.1.2.2.0 |
Disk Usage | Alert if this value goes over 75% (raw value of 7500). | CASTIRON-IA-MIB::ciIaResPctWipFull .1.3.6.1.4.1.13336.2.2.2.1.1.2.3.0 |
Garbage collections
CASTIRON-IA-MIB::ciIaResNbrGarbageCollects
counts the number of garbage collections that have occurred since
the system was last restarted. While occasional garbage collections
are normal, collections of 6 or more per minute is excessive and indicates
that an appliance is overworked and as a result, may experience performance
issues.
$ snmpwalk -On -v 2c -c public -M +. -m +CASTIRON-IA-MIB pebbles2.sanjose.ibm.com
CASTIRON-IA-MIB::ciIaResNbrGarbageCollects .1.3.6.1.4.1.13336.2.2.2.1.1.2.1.0 = Counter32: 149
Memory usage
CASTIRON-IA-MIB::ciIaResPctMemoryUsed
shows the percentage of total memory in use, expressed in hundredths
of a percent. This number is updated after each garbage collection.
$ snmpwalk -On -v 2c -c public -M +. -m +CASTIRON-IA-MIB pebbles2.sanjose.ibm.com
CASTIRON-IA-MIB::ciIaResPctMemoryUsed .1.3.6.1.4.1.13336.2.2.2.1.1.2.2.0 = Gauge32: 1.84
Note
that this value is provided as an integer (184 in this case), but
the MIB causes the SNMP manager to alter its displayed value. Values
expressed in hundredths of a percent are usually modified automatically.
For example in this case. '1234' should be displayed as '12.34'. However,
take care to ensure that the SNMP management tool handles this automatically.
If it does not, the value will appear as follows: $ snmpwalk -On -v 2c -c public pebbles2.sanjose.ibm.com
.1.3.6.1.4.1.13336.2.2.2.1.1.2.2.1.3.6.1.4.1.13336.2.2.2.1.1.2.2.0 = Gauge32: 184
Recommendation:
Alert if this value goes over 80% (raw value of 8000). Disk usage
CASTIRON-IA-MIB::ciIaResPctWipFull
indicates the percentage of total Work-in-progress (WIP) disk space
in use, expressed in hundredths of a percent. This number is key
for predicting job purging activities.
$ snmpwalk -On -v 2c -c public -M +. -m +CASTIRON-IA-MIB pebbles2.sanjose.ibm.com
CASTIRON-IA-MIB::ciIaResPctWipFull .1.3.6.1.4.1.13336.2.2.2.1.1.2.3.0 = Gauge32: 6.00
Recommendation:
Alert if this value goes over 75% (raw value of 7500).