HP Insight Cluster Management Utility v7.1 User Guide

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ALERTS
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#cpu_freq_alert "CPU frequency is not nominal" 1 24 100 < % sh -c "b=`cat
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq`;a=`cat
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq`;echo 100 \* \$b / \$a |bc"
login_alert "Someone is connected" 3 24 0 > login(s) w -h | wc -l
root_fs_used "The / filesystem is above 90% full" 4 24 90 > % df / | awk '{
if ($6=="/") print $5}' | cut -f 1 -d % -
#reboot_alert "Node rebooted" 4 24 5 < rebooted awk '{printf "%.1f\n",$1/60}' /proc/uptime
# The line below allows to report MCE errors; be careful for possible false positives
#mce_alert "The kernel has logged MCE errors; please check /var/log/mcelog" 5 60 1 > lines wc -l
/var/log/mcelog |cut -f 1 -d ' '
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ALERT_REACTIONS
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#login_alert "Sending mail to root" ReactOnRaise echo -e "Alert 'CMU_ALERT_NAME' raised on node(s)
CMU_ALERT_NODES. \n\nDetails:\n`/opt/cmu/bin/pdsh -w CMU_ALERT_NODES 'w -h'`" | mailx -s "CMU: Alert
'CMU_ALERT_NAME' raised." root
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#root_fs_used "Sending mail to root" ReactOnRaise echo -e "Alert 'CMU_ALERT_NAME' raised on node(s)
CMU_ALERT_NODES. \n\nDetails:\n`/opt/cmu/bin/pdsh -w CMU_ALERT_NODES 'df /'`" | mailx -s "CMU: Alert
'CMU_ALERT_NAME' raised!" root
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#reboot_alert "Sending mail to root" ReactOnRaise echo -e "Alert 'CMU_ALERT_NAME' raised on node(s)
CMU_ALERT_NODES. \n\nDetails:\n`/opt/cmu/bin/pdsh -w CMU_ALERT_NODES 'uptime'`" | mailx -s "CMU: Alert
'CMU_ALERT_NAME' raised." root
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Lines prefixed with # are ignored. Lines cannot begin with a leading white space. Each line
corresponds to a sensor, alert, or an alert reaction. Sensors are placed at the beginning of the
file, between the ACTIONS and ALERTS tags. Each alert is in the middle of the file between the
ALERTS and ALERT_REACTIONS tags, and each alert reaction is at the end of the file below the
ALERT_REACTIONS tag.
Most sensors have both a “native” line and a commented “collectl” line. To use collectl for
collecting monitoring data, enable it by removing the comment from the corresponding sensor line.
NOTE: Using collectl requires additional steps described in “Using collectl for gathering
monitoring data” (page 81).
5.5.2 Actions
Each action contains the following fields:
Name
The name of the sensor as it appears in the Java GUI. It must consist of letters only.
Description
A quote-contained string to describe in a few words what the sensor is. This appears in the
GUI.
Time multiple
An integer value that determines when the sensors are monitored. If the monitoring has a default
timer of 5 seconds:
• A time multiple of 1 means the value is monitored every 5 seconds.
• A time multiple of 2 means the value is monitored every 10 seconds.
Data type
This can be numerical or a string. A string sensor cannot be displayed in the pies by the
interface.
Measurement method
This can be either Instantaneous or MeanOverTime.
• Instantaneous returns the sensor value immediately.
78 Monitoring a cluster with HP Insight CMU