[CentOS-mirror] [#ZKV-55972-388] msync.centos.org issues from Australia

We noticed constant issues with talking to the msync mirror so started just using a USA host directly. (one of the msync listed hosts that gave the best connection)

The issues we were seeing was either connection refused or the connection just running really really slowly. Unfortunately given the way the scripts run it wasn't totally clear which server was the issue but something was clearly wrong somewhere.


Regards,

Matt

support at colocity.com
Colocity Pty Ltd
Adelaide Co-location and Dedicated Servers
Ph: (08) 8232-3250  Fx: (08) 8227-0315

On Sun, 05 Jul 2015, centos-mirror at centos.org wrote:
> Ok, but nowhere on http://wiki.centos.org/HowTos/CreatePublicMirrors does it indicate this is the hostname to use.
> 
> Ill wait for some official information before I go using a custom hostname, in the meantime ill just revert back to IP pulling from USA as that seems to be more stable.
> 
> It seems something is wrong... again. 5 mirrors (all of which are usually quite stable) have all dropped out 2.9 days ago.
> 
> Regards,
> Seamus
> 
> 
> From: centos-mirror-bounces at centos.org [mailto:centos-mirror-bounces at centos.org] On Behalf Of daniel at glovine.com.au
> Sent: Friday, 3 July 2015 7:24 PM
> To: 'Mailing list for CentOS mirrors.'
> Subject: Re: [CentOS-mirror] msync.centos.org issues from Australia
> 
> Like 12 months?  Its just the hostname of our msync mirror server we operate here in Australia
> 
> From: centos-mirror-bounces at centos.org<mailto:centos-mirror-bounces at centos.org> [mailto:centos-mirror-bounces at centos.org] On Behalf Of Seamus Ryan
> Sent: Friday, 3 July 2015 6:57 PM
> To: Mailing list for CentOS mirrors.
> Subject: Re: [CentOS-mirror] msync.centos.org issues from Australia
> 
> I am curious, for how long has "centose7.centos.org" been in use.
> 
> First I have heard of it...
> 
> From: centos-mirror-bounces at centos.org<mailto:centos-mirror-bounces at centos.org> [mailto:centos-mirror-bounces at centos.org] On Behalf Of Matthew Taylor
> Sent: Friday, 3 July 2015 6:07 PM
> To: Mailing list for CentOS mirrors.
> Subject: Re: [CentOS-mirror] msync.centos.org issues from Australia
> 
> Hi Seamus,
> 
> Fair point in regards to the centose7.centos.org A Record.
> 
> Perhaps you could use it until potential issues with msync.centos.org have been resolved */subtle nudge to Fabian to investigate!* ?
> 
> Regards,
> Matthew.
> On 3/07/2015 17:42, Seamus Ryan wrote:
> centose7.centos.org doesn't appear to be globally distributed (https://www.whatsmydns.net/#A/centose7.centos.org)
> 
> However msync.centos.org is (https://www.whatsmydns.net/#A/msync.centos.org)
> 
> The reason I point towards the Australian POP is due to the fact quite a few mirrors have dropped in and out of sync several times over the last week, all about the same time. No other region appears to be experiencing these issues.
> 
> It seems either msync.centos.org is broken for Australian ISP's (seems the geo-load balancing is a bit sporadic) or something else is going on. When I query pdns1/2/3.centos.org for msync.centos.org I get an array of responses, some local and some international
> 
> 103.18.205.7
> 199.187.126.92
> 124.217.252.175
> 216.172.56.29
> 
> Not exactly sure what is going on here, but something isn't right....
> 
> 
> -          Seamus
> 
> 
> From: centos-mirror-bounces at centos.org<mailto:centos-mirror-bounces at centos.org> [mailto:centos-mirror-bounces at centos.org] On Behalf Of Matthew Taylor
> Sent: Friday, 3 July 2015 5:23 PM
> To: centos-mirror at centos.org<mailto:centos-mirror at centos.org>
> Subject: Re: [CentOS-mirror] msync.centos.org issues from Australia
> 
> Hi all,
> 
> Interesting... We (centos.mirror.digitalpacific.com.au, AS55803, 101.0.101.66) pull all of our CentOS content from centose7.centos.org (which resolves to 103.18.205.7), and we've had no problems at all.
> 
> Perhaps it may be related to msync.centos.org not redirecting the requests correctly? For starters, I receive an A Record for a msync node not even local to AU:
> [root at mirror ~]# dig @pdns1.centos.org msync.centos.org +short
> 124.217.252.175
> ^ AS45839, Malaysia.
> [root at mirror ~]# mtr 124.217.252.175 -r -c 5 -n
> HOST: mirror.digitalpacific.com.a Loss%   Snt   Last   Avg  Best  Wrst StDev
>   1. 101.0.101.65                  0.0%     5    2.2   2.4   2.2   2.9   0.3
>   2. 101.0.127.189                 0.0%     5    0.7   0.7   0.6   0.7   0.0
>   3. 101.0.127.229                 0.0%     5    0.2   0.3   0.2   0.4   0.0
>   4. 202.68.66.209                 0.0%     5    0.8   0.5   0.3   0.8   0.2
>   5. 202.68.64.67                  0.0%     5    0.8   0.6   0.6   0.8   0.1
>   6. 129.250.3.76                  0.0%     5  120.2 120.4 120.2 121.1   0.4
>   7. 129.250.6.209                 0.0%     5  120.4 122.8 120.2 133.0   5.7
>   8. 129.250.2.121                 0.0%     5  166.8 169.8 165.1 180.4   6.1
>   9. 129.250.5.83                  0.0%     5  168.9 168.8 168.3 169.7   0.6
>  10. 180.87.112.153                0.0%     5  165.1 165.8 165.1 168.4   1.5
>  11. 180.87.112.142               20.0%     5  200.1 200.0 200.0 200.1   0.0
>  12. 180.87.163.26                 0.0%     5  199.3 199.3 199.1 199.7   0.2
>  13. 180.87.12.1                   0.0%     5  191.0 191.0 190.9 191.0   0.0
>  14. 216.6.121.137                20.0%     5  200.5 199.7 197.5 200.5   1.5
>  15. 216.6.121.62                 20.0%     5  201.0 201.0 200.9 201.1   0.1
>  16. 124.217.252.175              60.0%     5  208.0 209.0 208.0 210.1   1.5
> 
> ..and it seems to be having issues too! Perhaps that could be one of the reasons why the AU mirrors are all over the place..?
> 
> Regards,
> Matthew.
> On 3/07/2015 17:11, daniel at glovine.com.au<mailto:daniel at glovine.com.au> wrote:
> Hey Seamus
> 
> Just confirmed with a few people that our msync mirror is fine,
> 
> Can you A,  tell me your servers IP/hostname?
> B, set your cron to use centose7.centos.org instead of mysnc hostname?
> 
> 
> Daniel
> 
> From: centos-mirror-bounces at centos.org<mailto:centos-mirror-bounces at centos.org> [mailto:centos-mirror-bounces at centos.org] On Behalf Of Seamus Ryan
> Sent: Friday, 3 July 2015 4:32 PM
> To: centos-mirror at centos.org<mailto:centos-mirror at centos.org>
> Subject: [CentOS-mirror] msync.centos.org issues from Australia
> 
> Greetings,
> 
> I was just wondering if there is something funny going on with msync.centos.org's availability within Australia. I see it is geo-load balanced to various places around the world, but in particular in Australia we are (in many cases) sent to
> 
> 103.18.205.7 - 7-205-18-103.static.glovine.com.au
> 
> 
> That's all well and good, but a quick look at http://mirror-status.centos.org/ reveals quite a few of the Australian mirrors have been all over the place over the last few weeks, which would somewhat suggest something is up with this mirror source?
> 
> Any clues?
> 
> Cheers,
> Seamus
> 
> 
> 
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