Create a Threshold Group
A threshold group associates a set of thresholds to a service (for example, thresholds that apply to all Cisco devices). Meridian includes the following preconfigured, editable threshold groups:
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mib2
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cisco
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hrstorage
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netsnmp
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juniper-srx
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netsnmp-memory-linux
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netsnmp-memory-nonlinux
-
opennms-jvm-jvx
You can edit an existing group through the web UI, or create a new one in ${OPENNMS_HOME}/etc/thresholds.xml
.
Once you create a group, you can then define it the UI or in thresholds.xml
.
This procedure creates a threshold group called "demo_group":
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Open
${OPENNMS_HOME}/etc/thresholds.xml
and add the following line of code:<group name="demo_group" rrdRepository="/opt/opennms/share/rrd/snmp/"> </group>
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Log in to the web UI and click the gear symbol in the top-right of the screen.
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Under Performance Measurement, click Configure Thresholds.
The group you created should appear in the UI.
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Click Edit next to the group’s name.
The following is a sample of how the threshold appears in thresholds.xml
:
<group name="demo_group" rrdRepository="/opt/opennms/share/rrd/snmp/"> (1)
<expression type="high" ds-type="hrStorageIndex" value="90.0"
rearm="75.0" trigger="2" ds-label="hrStorageDescr"
filterOperator="or" expression="hrStorageUsed / hrStorageSize * 100.0">
<resource-filter field="hrStorageType">^\.1\.3\.6\.1\.2\.1\.25\.2\.1\.4$</resource-filter> (2)
</expression>
</group>
1 | The name of the group and the directory of the stored data. |
2 | The details of the threshold, including type, data source type, threshold value, re-arm value, and so on. |