[CentOS-mirror] msync.centos.org issues from Australia

[Seamus Ryan]

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] On Behalf Of Matthew Taylor
Sent: Friday, 3 July 2015 5:23 PM
To: 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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