<div dir="ltr">replace "but only with the errors" with "but only with the normal types of errors"<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 18, 2021 at 10:52 AM Daniel Alley <<a href="mailto:dalley@redhat.com">dalley@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><a class="gmail_plusreply" id="gmail-m_-9086882874332126830m_2042471675008620397plusReplyChip-0" href="mailto:bli111@bloomberg.net" target="_blank">@Bin Li</a><div> Could you post the error that was logged? I think this traceback is missing some of the relevant details.</div><div><br></div><div>I can tell you what I expect that problem *might* be, because we've been hearing about it a lot recently. Again, this is just a guess, without more information.<br></div><div><br></div><div>We have found that some content delivery networks (including the Red Hat one) start returning seemingly irrelevant error messages when they get 'angry' about too much traffic coming from one source. Rather than returning HTTP 429 or some other standard response, sometimes it will just terminate the connection, or give you SSL errors, or return an incomplete payload. This might be some type of DDoS prevention / flood control mechanism, I'm not entirely sure. The mitigation is to either reduce the "download_concurrency" on your remote from 10 to 5, or using "on_demand" syncs rather than "immediate". Both of those are just to lessen the load on the CDN and make it less likely to start dropping connections.</div><div><br></div><div>But the "proper" fix is being worked on for pulpcore 3.14. We want to automatically retry downloads that fail using a backoff algorithm to prevent the entire sync from failing. We were already doing this, but only with the errors, rather than the weird ones that seem to come up in practice. And we're making the number of retry attempts configurable.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 18, 2021 at 9:04 AM Dennis Kliban <<a href="mailto:dkliban@redhat.com" target="_blank">dkliban@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>I don't see anything special about these repos. Are you still experiencing this problem?</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 16, 2021 at 5:00 PM Bin Li (BLOOMBERG/ 120 PARK) <<a href="mailto:bli111@bloomberg.net" target="_blank">bli111@bloomberg.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="white-space:pre-wrap;font-size:small;font-family:"Courier New",Courier,"BB.FixedWidth""><div>Tried to download aarch64 repo and got the errors below:</div><div><br></div> "description": "", <div> "traceback": " File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/rq/worker.py\", line 886, in perform_job\n rv = job.perform()\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/rq/job.py\", line 664, in perform\n self._result = self._execute()\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/rq/job.py\", line 670, in _execute\n return self.func(*self.args, **self.kwargs)\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulp_rpm/app/tasks/synchronizing.py\", line 266, in synchronize\n dv.create()\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulpcore/plugin/stages/declarative_version.py\", line 148, in create\n loop.run_until_complete(pipeline)\n File \"/opt/python/3.7.3/lib64/python3.7/asyncio/base_events.py\", line 584, in run_until_complete\n return future.result()\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulpcore/plugin/stages/api.py\", line 225, in create_pipeline\n await asyncio.gather(*futures)\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulpcore/plugin/stages/api.py\", line 43, in __call__\n await self.run()\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulpcore/plugin/stages/artifact_stages.py\", line 152, in run\n pb.done += task.result() # download_count\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulpcore/plugin/stages/artifact_stages.py\", line 178, in _handle_content_unit\n await asyncio.gather(*downloaders_for_content)\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulpcore/plugin/stages/models.py\", line 88, in download\n download_result = await downloader.run(extra_data=self.extra_data)\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulpcore/download/base.py\", line 227, in run\n return await self._run(extra_data=extra_data)\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/pulp_rpm/app/downloaders.py\", line 87, in _run\n async with self.session.get(url, proxy=self.proxy, auth=self.auth) as response:\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/aiohttp/client.py\", line 1012, in __aenter__\n self._resp = await self._coro\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/aiohttp/client.py\", line 504, in _request\n await resp.start(conn)\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/aiohttp/client_reqrep.py\", line 847, in start\n message, payload = await self._protocol.read() # type: ignore # noqa\n File \"/opt/utils/venv/pulp/3.7.3/lib64/python3.7/site-packages/aiohttp/streams.py\", line 591, in read\n await self._waiter\n</div><div><br></div><div>The same error happened on both remote <a href="https://cdn.redhat.com/content/dist/rhel8/8.4/aarch64/baseos/os" target="_blank">https://cdn.redhat.com/content/dist/rhel8/8.4/aarch64/baseos/os</a> and <a href="https://cdn.redhat.com/content/dist/rhel8/8.4/aarch64/appstream/os" target="_blank">https://cdn.redhat.com/content/dist/rhel8/8.4/aarch64/appstream/os</a></div><div><br></div><div>Please advise. </div><div><br></div><div>Thanks</div></div></div>_______________________________________________<br> Pulp-list mailing list<br> <a href="mailto:Pulp-list@redhat.com" target="_blank">Pulp-list@redhat.com</a><br> <a href="https://listman.redhat.com/mailman/listinfo/pulp-list" rel="noreferrer" target="_blank">https://listman.redhat.com/mailman/listinfo/pulp-list</a></blockquote></div> _______________________________________________<br> Pulp-list mailing list<br> <a href="mailto:Pulp-list@redhat.com" target="_blank">Pulp-list@redhat.com</a><br> <a href="https://listman.redhat.com/mailman/listinfo/pulp-list" rel="noreferrer" target="_blank">https://listman.redhat.com/mailman/listinfo/pulp-list</a></blockquote></div> </blockquote></div>