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New Mirror
by Tyler Bishop 14 Mar '17

14 Mar '17

Adding a 2nd mirror IP. 209.87.152.5

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update mirror
by Host.AG 13 Mar '17

13 Mar '17

Hello Please update our mirror - mirror.bg.host.ag HTTP: http://mirror.host.ag/centos/ FTP: ftp://mirror.host.ag/centos/ RSYNC: rsync://mirror.host.ag/centos/ Sync schedule: Every 6 hrs Bandwidth: 2 Gbps Location: BG Sponsor: Host.AG Sponsor URL: https://www.host.ag IPv4 address to authorize: 5.104.175.130 IPv6 address to authorize: 2a07:5741:0:501::1 Email contact: mirror(a)host.ag Mirroring AltArch : no Thank you

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Mirror IP Update
by Brian Lancaster 10 Mar '17

10 Mar '17

Please update IP for mirror.redsox.cc to 76.204.63.172 and update rsync servers to allow connectivity. Thanks! -- brian(a)redsox.cc

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Request for new mirror
by Cochrane, Bryan T 09 Mar '17

09 Mar '17

We'd like to add a new mirror based in the UK. HTTP: <http://centos.mirror.iphh.net/CentOS/> http://mozart.ee.ic.ac.uk/CentOS/ Sync schedule: Every 6 hrs Bandwidth: 1000 Mbit Location: United Kingdom Sponsor: Imperial College London Sponsor URL: http://www.imperial.ac.uk IPv4 address to authorize: 155.198.130.31 IPv6 address to authorize: 2001:630:12:1082:21b:78ff:fe7b:b824 Email contact: b.cochrane(a)imperial.ac.uk Mirroring AltArch : no Thanks in advance. Bryan <mailto:b.cochrane@imperial.ac.uk>

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New mirror IP address mirror.netrouting.net
by Jim Klapwijk 09 Mar '17

09 Mar '17

Hi! We have migrated to a new (much stronger) server. This one has a new IP address as well, could you please change this so we can mirror directly from CentOS? The new IPv4 address is "94.228.209.50" We also support IPv6 now: "2a00:dd0:0:71:862b:2bff:fe68:8e6e" Also we offer rsync as well. Could you add this to the list as well: "rsync://mirror.netrouting.net/centos" And our FTP address to: "ftp://mirror.netrouting.net/centos" We have also changed the sync schedule to every 6 hours. Also the new contact e-mail address is "mirror(a)netrouting.net". Thanks a lot! -- Best Regards, * Jim Klapwijk CDCP* Datacenter Manager | Netrouting Netrouting.com <3D%22https://www.netrouting.com%22>* a.new.experience* Our locations: Amsterdam NL, Rotterdam NL, Spijkenisse NL, The Hague NL, Frankfurt DE, Stockholm SE, Bucharest RO, Miami FL, Dallas TX. Se habla Español / Wij spreken Nederlands / We speak English / Wir sprechen Deutsch Netrouting is registered in The Netherlands 50537504. Boyleweg 2, 3208 KA Spijkenisse. DDI Telephone: +1 305-705-6983 / Toll Free (US): +1-888-216-9394 / Toll Free (NL): 0800-HOST / Disclaimer: This e-mail and any attachment sent with it are intended exclusively for the addressee(s), and may not be passed on to, or made available for use by any person other than the addressee(s). If this e-mail is not addressed to you, we ask you to notify the sender by return e-mail and delete and destroy the original e-mail and any copies. Netrouting rules out any and every liability resulting from any electronic transmission. /

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Request for being listed as official mirror: centos.mirror.iphh.net
by repository＠iphh.net 07 Mar '17

07 Mar '17

Hi, we would like to support you with a new mirror! :) Here are the requested information: HTTP: http://centos.mirror.iphh.net/CentOS/ Sync schedule: Every 6 hrs Bandwidth: 500 Mbit Location: Germany Sponsor: IPHH Internet Port Hamburg GmbH Sponsor URL: https://www.iphh.net/ IPv4 address to authorize: 62.201.161.93 IPv6 address to authorize: 2001:868:0:182::13 Email contact: repository(a)iphh.net Mirroring AltArch : no Thank you in advance Cheers, Carsten

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Fwd: New mirror at IT4Innovations
by David Hrbáč 03 Mar '17

03 Mar '17

Hi, I have created a new mirror. Thanks for adding. DH HTTP: http://mirror.it4i.cz/centos/ RSYNC: rsync://mirror.it4i.cz/centos/ Sync schedule: Every 1 hrs Bandwidth: 10Gb Location: CZ Sponsor: IT4Innovations National Supercomputing Center Sponsor URL: http://www.it4i.cz/ IPv4 address to authorize: 195.113.250.52 IPv6 address to authorize: 2001:718:1007:48::1:52 Email contact: support(a)it4i.cz Mirroring AltArch : no

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RSYNC Cron Job Failing (Unknown module 'CentOS')
by centos＠mirror.aumix.net 02 Mar '17

02 Mar '17

Hello, today we noticed that our sync cron generating the following error. @ERROR: Unknown module 'CentOS' rsync error: error starting client-server protocol (code 5) at main.c(1516) [Receiver=3.0.9] Host IP: 62.90.37.3 Thanks, Tareq

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ACL migration a.k.a. Unknown module 'CentOS' errors
by Anssi Johansson 02 Mar '17

02 Mar '17

Hello everyone. As some of you may have noticed, I have started helping Fabian Arrotin with mirrorlist management tasks. For example, I can now make changes to the list of CentOS mirrors myself. I will also continue maintaining the IPv6 mirror checker (see http://miuku.net/ipv6reach/ for stats), which runs separate from the main CentOS mirror checker. In order for me to change the access control list which specifies the IP addresses that can connect to msync.centos.org nodes, the ACL had to be moved from a separate configuration file to the main mirror database. This gives me easier access to the ACL. The ACL is exported from the database to msync nodes periodically. The reason why I'm writing this message is that it's possible that some of the IP addresses got accidentally assigned to mirrors that have been disabled, and this causes that IP address to be excluded from the ACL. I don't expect this to be a particularly widespread problem, but it is a possibility. If you have problems syncing (you get a message like Unknown module 'CentOS' and/or your timestamp.txt is too old), please let us know and we'll fix the problem ASAP. Please specify your mirror's http URL and IP addresses (IPv4, and if you're lucky enough to have IPv6, that too) so that we could locate your mirror's data from the database quickly. Thanks for your cooperation. If you have any other concerns or questions, feel free to send me an email or come to #centos-mirror on Freenode for a chat.

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Re: [CentOS-mirror] [CentOS-devel] Getting content to mirrors faster
by Fabian Arrotin 01 Mar '17

01 Mar '17

On 01/03/17 14:44, Anssi Johansson wrote: > We have 600+ active CentOS mirrors[1] and sometimes there are critical > updates that would need to get published to the mirror network as > quickly as possible. As of now, it takes around five hours to go from 0 > up-to-date mirrors to 80% up-to-date mirrors, with a longer tail for the > remaining 20%. > > Current guidelines for setting up a mirror[2] specify that mirrors > should sync 2-4 times per day. Instead of telling mirrors to sync hourly > I thought we could come up with something smarter. > > One option that I have considered would be something similar to what the > ClamAV guys use to signal end users that there is new content. They use > a DNS TXT record for that purpose. For example, as of this writing "dig > txt +short current.cvd.clamav.net" produces > "0.99.2:57:23148:1488371340:1:63:45637:290", which shows the version > numbers for ClamAV itself, main virus database, daily virus database, > timestamp and other version numbers. > > We could have something similar, showing the timestamps when the content > for CentOS, CentOS AltArch and CentOS Vault was last modified, like > "1488372781:1487767981:1488113581". "Last modified" in the sense that > new packages got added at that time. The idea is that mirrors could set > up scripts to check that timestamp from DNS more frequently (such as > hourly) without causing load issues to msync nodes by rsyncing hourly. > The TTL for the TXT record could be relatively small, like 10 minutes. > > As you're all aware, DNS is a prime example of a very scalable system, > and that's why I'm fond of this solution. Another option would be to > publish the same data in a central location and served over http(s), if > relaying the timestamp data via DNS is not desired for some reason. > > The basic principle would be "if timestamp in TXT record > my current > timestamp (TIME file), synchronize the mirror". With more frequent > syncs, mirror admins would need to take care that no two rsync runs > would happen at the same time. Using lockfile in the scripts would help > with this. I hope that many of the mirror admins already use lockfiles, > but providing an example script might help for the newer mirror admins. > > The timestamps should be updated only after it has been verified that > all (or at least the majority) of msync nodes actually have the content. > It takes a while for the data to reach all the msync nodes from the master. > > On the other hand, this may cause some traffic peaks for the msync > nodes. I don't know how well they would handle the peaks. One obvious > way to alleviate the peaks would be to instruct mirror admins to pick a > random minute when to check for new content. echo $[ $RANDOM % 60 ] > works nicely for this. I don't have statistics, but I believe there > might be mirrors that sync at "0 */6" ie. at the top of the hour. > > > If the traffic peaks to msync nodes is deemed to be a problem, there > might be ways to reduce the load to msync nodes. The following idea > could be implemented separately from the above timestamp idea, if needed. > > There could be some sort of a "web service" which instructs mirrors > where to sync from. The core idea in this is that the source might not > always be a msync.centos.org server, but it could also be a nearby > public mirror that offers rsync and has been verified to have the new > content. If requested from Finland, that service could say "ok, you're > from .fi, go sync from ftp.funet.fi as it has the new content already" > or "uh oh, no nearby external mirrors have the new content, please rsync > from eu-msync.centos.org". It could simply return a list of rsync > servers in descending priority, with some msync.centos.org addresses at > the bottom as fallback. Once the mirror has rsynced, the mirror could > ping back and say "I have the content now, please check, and if OK, add > me to the list of mirrors that have the new content". > > One concern is that the list of rsync sources would need to be > protected, so that mirrors could not be tricked into syncing from a > malicious source (think DNS poisoning). Ways to protect from this > include DNSSEC, TLS and PGP signed data. > > > Any thoughts about this? > > > [1] http://mirror-status.centos.org/ > [2] https://wiki.centos.org/HowTos/CreatePublicMirrors Hi Anssi, Thanks a lot for all those ideas. While I understand your idea behind a TXT record at the DNS level, I'd say that I'm not a fan of that idea. Even with lower TTL, you'd be surprized how many hits we had on servers that were migrated to new ones, as it seems some ISPs aren't obeying the TTL and so were still serving wrong (and expired) A/AAAA records from their cache. DNS itself (currently for centos.org) isn't DNSSEC enabled too, so that would mean other protection, etc I'd prefer your alternative with "let's host this behind a https web server" and also for the reason that it's easier to have TLS for webserver, and that from the automation point-of-view, it's easier for people allowed to build/sign/push (two people) to just update/drop a file somewhere, than using DNS modification. For dns, as the zone is actually under git/puppet control, that would mean *not* using that, but rather having a delegated zone that would allow nsupdate with a key that those people would share, etc ... So the simple file served from https seems easier from my side. I'd like to get opinions from Johnny/KB (people able to sign/push) as they'd be directly concerned by that decision. From an "external mirror admin" PoV, we should also use the centos-mirror list to discuss this, to get their opinions ? Also, we can divide your proposal into two parts : - external mirrors can check a file they can compare against to sync "faster" than through their cron jobs (discussed above) - modifying completely the msync.centos.org network to have external mirrors not syncing from us, but betwen them (not sure how people feel about this) PS : Anssi is now part of the mirrors managers team for CentOS , for people not yet aware of that fact -- Fabian Arrotin The CentOS Project | http://www.centos.org gpg key: 56BEC54E | twitter: @arrfab

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