Failover is the process that automatically transfers operations to an identical backup system when the primary system becomes unavailable due to failure or scheduled downtime. Failover can happen on a computer, system, network, hardware, or software component on standby if the initial system or component fails.

On the log collection front, you can set up a cluster of NXLog agents in failover mode. If the first node fails, the next node in the cluster can take over. When it comes to log forwarding, network modules such as om_tcp and om_http support failover configuration, where if the first destination is unavailable, the module will send logs to the next available destination.

failover cluster

NXLog failover mode
High Availability (HA)