Hi, Am 04.09.20 um 18:20 schrieb DHilsbos@performair.com:
All;
We've been running RadosGW on our nautilus cluster for a while, and we're going to be adding iSCSI capabilities to our cluster, via 2 additional servers.
I intend to also run RadosGW on these servers. That begs the question of how to "load balance" these servers. I don't believe that we need true load balancing (i.e. through a dedicated proxy), and I'd rather not add the complexity and single point of failure.
The question then is: Does RadosGW play nice with round-robin DNS? The real question here is whether RadosGW maintains internal client state locally between connections. I would expect it's safe, given that it is HTTP, but I'd prefer to verify.
I am also very interested in the answer — we are operating 3 RGW instances since over a year with DNS load balancing, but never asked this question, and did not observe any issues. It would of course be nice to see this confirmed ;-). However, most of our clients are using systemd-resolved for DNS caching, as most Linux distributions do nowadays. This breaks load-balancing of each client (i.e. each client stays with a chosen address after the initial DNS query for the cache period)[0], so it might be that if there is an issue, this is hidden by the way most of our client systems behave. Cheers, Oliver [0] https://github.com/systemd/systemd/issues/16297
Thank you,
Dominic L. Hilsbos, MBA Director - Information Technology Perform Air International Inc. DHilsbos@PerformAir.com www.PerformAir.com
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