General question on Orion NPM and additional pollers

broeben

Let's say I have Orion setup with 3 servers.   In location A, I have the main Orion NPM server and a separate SQL server (to house the database).   In location B, I have a Orion NPM additional poller.   I have some nodes assigned to main server in location A and I have other nodes assigned to the additional poller in location B.  If for some reason, location A goes down, will the poller in B still be gathering information?   Or will it stop gathering because the SQL server is no longer available?  If it stops gathering, will it restart collecting info once location A comes back up?  Or will all the Orion services need to be restarted?  What if just the main box goes down, but the SQL server is still up?   Will continue gathering info and sending in to the database?

pacetti

broeben,

To address your concerns:

• If location A goes down entirely (main Orion server + SQL DB server), you will not be able to record anything from the Addl. Polling Engine. You will not have any data stored, but the APE will still poll and not actually be "down".
• If only the main Orion server goes down, you will still be able to record limited data from the APE: to support data collection for EnergyWise, ESX Server, and wireless devices, Additional Polling Engines require that the primaryOrion NPM polling engine in your environment is also running.
• If location A comes back online, you may need to restart Orion services on the APE to ensure complete synchronization.

HTH,