Node Network Interface Flapping

NodeNetworkInterfaceFlapping #

Meaning #

Network interface is often changing its status

Impact #

Applications on the node may no longer be able to operate with other services. Network attached storage performance issues or even data loss.

Diagnosis #

Investigate networkng issues on the node and to connected hardware. Check physical cables, check networking firewall rules and so on.

Mitigation #

Cordon and drain node to migrate apps from it.