[openstack-dev] [kolla] add service discovery, proxysql, vault, fabio and FQDN endpoints

Fox, Kevin M Kevin.Fox at pnnl.gov
Tue Oct 9 16:04:39 UTC 2018

There are specific cases where it expects the client to retry and not all code tests for that case. Its safe funneling all traffic to one server. It can be unsafe to do so otherwise.

From: Jay Pipes [jaypipes at gmail.com]
Sent: Monday, October 08, 2018 10:48 AM
To: openstack-dev at lists.openstack.org
Subject: Re: [openstack-dev] [kolla] add service discovery, proxysql, vault, fabio and FQDN endpoints

On 10/08/2018 06:14 AM, Florian Engelmann wrote:
> 3. HAProxy is not capable to handle "read/write" split with Galera. I
> would like to introduce ProxySQL to be able to scale Galera.

Why not send all read and all write traffic to a single haproxy endpoint
and just have haproxy spread all traffic across each Galera node?

Galera, after all, is multi-master synchronous replication... so it
shouldn't matter which node in the Galera cluster you send traffic to.


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