If I understand PRTG clustering properly, each node has an exact copy of the master node's sensor configurations. What happens then with flow or packet collection sensors configured on the master node? If the master node is collecting its own packets, do the failover nodes also need to be collecting packets? How about for netflow exported from a router? Does the netflow exporter need to send the same flows to all nodes in the cluster? What happens on the fail over node if it has a flow sensor configured but does not receive flow data?
How do flow sensors work in a clustered environment?
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