Dell EMC OpenManage Plug-in Version 3.1 for Nagios Core User’s Guide

About device discovery

The monitoring protocols for the supported Dell EMC devices are as follows:

• Dell EMC PowerEdge MX7000 modular chassis and PowerVault ME4 Storage Arrays are discovered using REST protocol.
• Dell EMC Servers are discovered using SNMP or WSMan protocol or Redfish protocol.
• Dell EMC Chassis are discovered using WSMan protocol.
• Dell EMC Storage and Dell EMC Network Switches are discovered using SNMP protocol.

NOTE: For iDRAC firmware version 3.30.30.30 and above are discovered using Redfish.

Use Dell EMC Discovery Utility to discover Dell EMC devices. If the discovery is successful, then for the discovered devices, host and service definition files 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 definition is not already present for a Dell EMC device that you want to discover.

You can discover devices using any of the following:

• Device IP address or FQDN

• Subnet with Mask

• File Containing a list of device IP addresses or FQDNs or Subnet with Mask

NOTE: For monitoring purpose, it is recommended to have read-only permission for the users.

• NOTE: At a time you can discover a Dell EMC Server using SNMP or WSMan protocol or Redfish. To rediscover a server previously discovered through SNMP protocol with WSMan protocol or Redfish or vice versa, run the Dell EMC Discovery Utility option along with the value of the desired protocol.

  NOTE: If a server was discovered using SNMP, but you want to discover the same device using WSMan protocol, navigate to <NAGIOS_HOME>/dell/scripts<NAGIOS_HOME>/dell/scripts, and run the following Python commands:

  For example:

  To discover a SNMP device through WSMan Protocol using Host name details:

  python dellemc_nagios_discovery_service_utility.py --host=<host name / IP address> --prefProtocol=2 --http.user=<username> --http.password=<password text> --output.file=/usr/local/nagios/dell/config/objects/ python dellemc_nagios_discovery_service_utility.py --host=<host name / IP address> --prefProtocol=2 --http.user=<username> --http.password=<password text> --output.file=/usr/local/nagios/dell/config/objects/

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