A new Resource Pool, that will host our network devices and load balance them.Ģ. A Class that will define our SNMP network device and any properties.ģ. Our class definitions look like the following: Therefore – even if you don’t need this functionality – this will be a very good MP example, of discovering objects from a CSV, and having those objects hosted by a resource pool and load balanced by resource pool members! Rules, to alert on all traps, specific traps from a specific OID, and specific traps where a SNMP varbind contains specific data A discovery, which is a PowerShell script to discover our network devices.Ĥ. There is a datasource for the Resource Pool, and a Discovery for that as well, but those aren’t important here. You can override this for Interval, SyncTime, Timeout, and the CSV path you want to discover from: Then – there is a discovery that discovers against the CSV file and creates our instances: They just create the pool and load the relationship so the pool will host our devices. My example CSV is very basic – you can add or remove fields you want to discover. For my example I include the device name, IP, Base64 SNMP Community String, a description, and the Owner. The Base64 Community string is described here: I have included the one for “public” in my example.Īnd let you generate alerts when traps are sent to the SCOM Management server that hosts these objects: We require a DeviceName, IP Address, and Community String (base64) at a minimum: You may change these as you wish, but you have to change the discovery script as well if you do. I have included three different rule examples:ġ. A rule to alert on ANY trap sent from the device.Ģ. A rule to alert on ANY trap sent to the device that comes from a specific OID.ģ. A rule that will filter a specific payload in the trap, such as data in a specific Varbind. You can look at the rule configurations to better understand this method, to start creating your own rules. This MP contains a Resource Pool dedicated for these devices. You must configure this, as by default it will use Automatic membership, and distribute your network devices across all management servers. This means each device must send a trap to EACH management server in the pool, because we do not control which management server hosts the device. Many devices are only able to send traps to two IP destinations, so it would be wise to choose two management servers for pool membership – to give high availability and load balancing, or just one management server for simplicity and testing: For this reason, especially for testing, you may want to set the Pool membership to manual, and limit the management servers.
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You can download the example management pack and sample CSV file here: So with a simple CSV, we can quickly “discover” our network devices, and start getting traps from them really quickly.
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