Redundancy Support
The SMF deployment in K8 cluster plays a vital role to support High Availability (HA) and Geographic Redundancy (GR). The redundancy support ensures stateful session continuity among the clusters during the rack or cluster failures.
The SMF achieves HA through redundant set-up of each cluster component such that any single point of failure is avoided.
The GR provides rack-level redundancy to replicate data between two separate K8 clusters across racks so that, on rack or cluster failure, traffic can switch to a remote rack to process the traffic. Rack or cluster failure can be due to power failure, multi-compute failures, network failure, multi-pod failure, BFD link failure, and so on.
The following features are related to this use case: