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.