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Put another way - is there a way to throttle the metadata sync requests in a multisite cluster? They seem to be overwhelming the master zone rgw server, it constantly runs at 40%+ CPU and watching the logs it just appears to be a steady stream of /admin/log?type=metadata
requests from the other zones. Is this normal behavior?
From: Wyll Ingersoll <wyllys.ingersoll@xxxxxxxxxxxxxx>
Sent: Wednesday, June 1, 2022 11:57 AM To: dev@xxxxxxx <dev@xxxxxxx> Subject: radosgw multisite sync /admin/log requests overloading system. I have a simple multisite radosgw configuration setup for testing. There is 1 realm, 1 zonegroup, and 2 separate clusters each with its own zone. There is 1 bucket with 1 object in it and no updates currently happening.
There is no group sync policy currently defined.
The problem I see is that the radosgw on the secondary zone is flooding the master zone with requests for the /admin/log . The radosgw on the secondary is consuming roughly 50% of the CPU cycles. The master zone radosgw is equally actiive a d is flooding the logs (at 1/5 level) with entries like this: 2022-06-01T11:45:06.719-0400 7ff415f8b700 1 ====== req done req=0x7ff5e02ed680 op status=0 http_status=200 latency=0.004000040s ====== 2022-06-01T11:45:06.719-0400 7ff415f8b700 1 beast: 0x7ff5e02ed680: 10.15.1.40 - syncuser [01/Jun/2022:11:45:06.715 -0400] "GET /admin/log?type=metadata&id=4&period=92e4fbd8-3429-4cc6-a9f4-6f756ba0c592&max-entries=100&&rgwx-zonegroup=3bc6efd6-a780-4cd1-9685-376e8b477756 HTTP/1.1" 200 44 - - - latency=0.004000040s 2022-06-01T11:45:06.719-0400 7ff446fed700 1 ====== req done req=0x7ff5e0572680 op status=0 http_status=200 latency=0.004000040s ====== 2022-06-01T11:45:06.719-0400 7ff446fed700 1 beast: 0x7ff5e0572680: 10.15.1.40 - syncuser [01/Jun/2022:11:45:06.715 -0400] "GET /admin/log?type=metadata&id=5&period=92e4fbd8-3429-4cc6-a9f4-6f756ba0c592&max-entries=100&&rgwx-zonegroup=3bc6efd6-a780-4cd1-9685-376e8b477756 HTTP/1.1" 200 44 - - - latency=0.004000040s What is going on and how do I fix this? The period on both zones is current and at the same epoch value. Any ideas/suggestions? thanks, Wyllys Ingersoll |
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