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Autor: KatolaZ
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A: devuan-mirrors
Assumpte: Re: [devuan-mirrors] Problem with deBIan.ipacct.com
On Fri, Oct 05, 2018 at 01:32:51PM +0200, Evilham wrote:

[cut]

>
> Happens when you quickly copy paste :-).
> Amprolla kinda relies on this, otherwise it couldn't work offline.
>


Amprolla does not rely on any of this, since it uses debian repos and
pkgmaster, directly, without any 302, and then it produced the merged
repos that are successively rsynced to pkgmaster.

> The problem has 0 to do with the IP version, it just happened to be more evident in this case.
>
> Say I host a devuan pkg mirror that 302s to deb.debian.example.org which is a RR of 8 IPs and 1 of those hosts is misconfigured,,you can expect requests that get redirected there to fail 1/8th of the time which a naïve check won't see 7/8ths of the time and users would not see 7/8 * (N-1)/N where N=$(count of IPs in deb.devuan.org) of the time, so pretty much never and would appear to be purely random.


Unfortunatly, we can't check also all the debian mirrors. I mean, we
physically cannot do that, since those are normally behind a CDN, and
you only reach the one that is closer to the server that does the
check, and there is no guarantee that you hit the same one that a
mirror hits and/or that you hit the same one that a client hits...

There is literally no way out of it.

>
>
> >Yes. we should check all the IPs connected with a certain mirror, and
> >we should also include IPv6 support. It's in the TODO list :)
>
> I suggest the mentioned IP is removed until that is fixed, I can help implement the checks you need, there is nothing speciaç meeded for IPv6 support besides this check which is valid for IPv4 too adding AAAA entries with the IPs that support that.
>
> If the machine you use to perform the checks, doesn't have IPv6 connectivity, I can probably setup something.
>
> If you can point me to the repo with the checking scripts, I can see that the checks are implemented by Wednesday 10th/17th.



The main checking script has always been at:

https://pkgmaster.devuan.org/scripts/test_rewrite.sh

HND

KatolaZ

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