Users Guide

Device discovery and inventory

Topics:

• About device discovery

• About Dell EMC device discovery utility

• About protocol parameters

• Discovering Dell EMC devices

• Device information

• Viewing Dell EMC devices in the Nagios Core console

About device discovery

You can discover the supported Dell EMC devices with this plug-in in the Nagios Core console. The monitoring protocols for the supported

Dell EMC devices are as follows:

• Dell EMC Servers are discovered using SNMP or WSMan protocol

NOTE

: At a time you can discover a Dell EMC Server using SNMP or WSMan protocol and not both. To rediscover a

server previously discovered through SNMP protocol with WSMan protocol or vice versa, run the discovery script with

the -f option along with the parameter for the desired protocol.

For example:

If a server was discovered using SNMP protocol, but you want to discover the same device using WSMan protocol,

navigate to

<NAGIOS_HOME>/dell/scripts, and run the following PERL script:

perl dell_device_discovery.pl -H <host or IP Address> -P 2 –f

<NAGIOS_HOME> is the installed location of Nagios Core and by default, the location of <NAGIOS_HOME> is /usr/local/nagios.

• Dell EMC Chassis are discovered using WSMan protocol.

• Dell EMC Storage are discovered using SNMP protocol

You must use Dell Device Discovery Utility to discover Dell EMC devices. If the discovery is successful, then for the discovered devices,

host and service denition les are created. For a device, it is recommended to have a unique host name and IP address. In Nagios Core,

ensure that a host and service denition is not already present for a Dell EMC device that you want to discover.

You can discover devices using any of the following:

• Device’s IP address or FQDN

• Subnet with mask

• File containing a list of device IP addresses or FQDNs

NOTE

: To customize the number of discovery processes that can run simultaneously, based on your requirements, navigate to

Dell_EMC_OpenManage_Plugin > resources > dell_plugincong.cfg le and edit the default numerical value for the following

parameter:

process.count. Its default value is 20.

The recommended value for process.count is a value between 1 and 150.

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