4.2
Monitor Resource Utilization and Node Status Using Nagios
Prerequisites
●
As an admin, run the following command to add user
nagios
to the tenant VM before using Nagios:
#
ux-tenant-add-user -u nagios -s /bin/bash tenant
●
Ensure that the Nagios service is running.
About this task
Nagios is used on Urika-GX to monitor:
●
Node status
●
Usage of:
○
CPU (per node and aggregated)
○
Memory (per node and aggregated)
○
Bandwidth (per node and aggregated) of management, HSS, operational networks and the Aries High
Speed Network (HSN) network. Also provides per node and aggregated bandwidth for the Aries High
Speed network.
○
Lustre, HDD and SSD storage (per node and aggregated)
In addition, Nagios can be used on Urika-GX to create and send alert notifications.
For more information, refer to
on page 189
Procedure
1. Access the Nagios UI by pointing a browser at
http://
machine
-smw/nagios/
2. Enter
crayadm
as the user name and
initial0
as the password to log on to the UI.
These are the default credentials for logging on to the Nagios UI on Urika-GX.
If the system is switched to the secure service mode, the administrator will need to run the following
command to add user
nagios
to the tenants:
#
ux-tenant-add-user -u nagios -s /bin/bash
3. Use the Nagios UI menu options to perform monitoring tasks, such as viewing reports and logs, as well as
node, system, storage and network status.
The following figure displays the Services page of the Nagios UI. The chart icon in the Service column can
be used for viewing metrics/statistical data, exporting page content as PDFs, viewing reports etc.
System Monitoring
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