[MacPorts] #68563: intermittent 503 errors from {packages, distfiles}.macports.org

[Joshua Root]

Thank you for the fix, and for letting us know. I'll revert the changes 
on our end and see how we go.

- Josh

On 30/10/2023 18:32, Michael Meier (FTP-Admin) wrote:
> On 10/28/23 10:39, MacPorts wrote:
>> #68563: intermittent 503 errors from {packages,distfiles}.macports.org
>>   * cc: rrze-ftp-admins@… (added)
> 
> Hi there,
> 
> these intermittent 503 errors should already be fixed since a few hours 
> after you CC:'d us on Saturday.
> Reason for the problems was that the webserver was occasionally running 
> out of threads. And it did so, because a few rather large subnets from 
> China were downloading the same CentOS-.isos over and over again (*) - 
> with >11000 connections, spread over >1000 IPs, at something like 3 
> KB/s. This did not even cause any relevant load on the server, the 
> webserver simply hit the configured limits for how many connections it 
> may handle in parallel, hence throwing the intermittent 503 errors.
> 
> (*) related discussion on the CentOS-mirror-list: 
> https://lists.centos.org/pipermail/centos-mirror/2023-October/077492.html
> 
> Regards,