Is partial data replication possible?

[cohult]

Partial replication is a DIY, aka “do it yourself”. Synchronizing nodes can be very hard, luckily you get help with that from the ConfD transaction manager. You can use this post + application note + blog post as inspiration:

New ConfD Application Note: “ConfD Active-Active Fully Synchronous HA Clusters”

This Active-Active application note focus on how to keep a piece of configuration fully synchronous across a cluster of ConfD’s while minimizing the availability sacrifice, i.e. locking the northbound interfaces when synchronizing the cluster, keeping the replicated configuration consistent at all times. This can be done for a single leaf, a subtree, or the entire configuration (<-- unlikely use-case). Other parts of the configuration can be kept local or replicated through for example an “even…

In the above post, all nodes can write to each other active-active style. If you just want to setup an active-standby replication that would simplify things greatly. Just lock the northbound APIs for writing on that standby node for all clients except the active node.