CODEWITHSUNDEEP
couchbase
consoko
consoko

Reputation: 87

Couchbase XDCR and haproxy

I intend to setup a Couchbase system with two cluster: the main cluster is active and another one for backup (use XDCR to replicate). Use haproxy in front of this Couchbase system to switch (manual) from active cluster to backup cluster when active cluster down.

Before test, i want to ask some advice for this topology. Is there any problem with this. Can i run smoothly in production environment???

I thought i can not use vbucket awareness client in this topology. Because client only know haproxy, i can not send direct request from client to couchbase server (has vbucket for specific document). Is that right???

Upvotes: 1

Views: 638

Answers (1)

user1697575
user1697575

Reputation: 2848

From your scenario it sounds like overhead. Why would you keep "stand by" cluster as a backup?

Instead, you can have all four instances of couchbase servers as one cluster (each instance running on its own box)...so you will take full advantage of vBucket architecture that it will be native-managed. If one of the instances is down, you will have no loss of data since the enabled replication will have mirror copy in the other nodes.

We use this setup in production with no issues. From time to time we bring one of the instances down for maintenance and the rest of the cluster still runs and its completely transparent to the Couchbase clients, e.g. no down time!

In my opinion XDCR makes sense for geographically separated locations (so you keep one cluster in Americas another in EMEA and so on). If all your instances in the same location, then Couchbase cluster technology will deliver high-availability (HA) with fail-over support already build in.

Upvotes: 3

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