[CentOS-mirror] 5.6 is coming closer
Roelf Wichertjes
info at roelf.org
Thu Apr 7 11:13:40 EDT 2011
By the way, can someone add a function to the mirror-status so you can let it sort sites on other things then country?
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Roelf Software
software.roelf.org
www.roelf.org
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Op 7 apr. 2011 om 17:11 heeft Roelf Wichertjes <info at roelf.org> het volgende geschreven:
> Also i found out that i made a error in the cron settings, instead of it syncing once every 12 houres, it synced every 12 DAYS, i fixed it, hopefully fixing the low ranking
>
>
> --------------------
> Roelf Software
> software.roelf.org
> www.roelf.org
> --------------------
>
> Op 7 apr. 2011 om 17:03 heeft Roelf Wichertjes <info at roelf.org> het volgende geschreven:
>
>> Oh, by the way:
>> What's "mirror age, daily stats" at the mirror list?
>> I'm increasing the sync rate to once an hour.
>>
>>
>> --------------------
>> Roelf Software
>> software.roelf.org
>> www.roelf.org
>> --------------------
>>
>> Op 7 apr. 2011 om 16:58 heeft Roelf Wichertjes <info at roelf.org> het volgende geschreven:
>>
>>> I've got the bandwith and speed for it,
>>> I once pulled all 7 install iso's (at the same time) from a high ranked mirror, it took me 16 min.
>>> Then did the same but now used my mirror, it took me 15 min.
>>> My bandwith is enough.
>>> Ps. I know what a busy server is.
>>> I get a bonus from my host if i have a lot of traffic.
>>> I forgot the tier of the site and i removed the --delete flag.
>>> (my mail software is broken and the webmail i'm using can't handle the e-mail format of the list-admin, so i can't read the mail in which he told me the tier).
>>>
>>> I'm ready for it!
>>>
>>>
>>> --------------------
>>> Roelf Software
>>> software.roelf.org
>>> www.roelf.org
>>> --------------------
>>>
>>> Op 6 apr. 2011 om 20:42 heeft "Paul Stewart" <pstewart at nexicomgroup.net> het volgende geschreven:
>>>
>>>> I'm curious as to what a busy mirror is...
>>>>
>>>> We are currently delivering about 60GB a day of CentOS files... does
>>>> that put us at the bottom or near the top? ;)
>>>>
>>>> Paul
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: centos-mirror-bounces at centos.org
>>>> [mailto:centos-mirror-bounces at centos.org] On Behalf Of J.H.
>>>> Sent: Wednesday, April 06, 2011 1:37 PM
>>>> To: Mailing list for CentOS mirrors.
>>>> Subject: Re: [CentOS-mirror] 5.6 is coming closer
>>>>
>>>> On 04/05/2011 01:52 PM, Karanbir Singh wrote:
>>>>> On 04/05/2011 12:30 PM, Roelf Wichertjes wrote:
>>>>>>
>>>>>> Maybe a idea,
>>>>>> Why not choose the least busy ones,
>>>>>> Say there are 100 mirrors, 5 are busy and 5 almost unused
>>>>>> Isn't it a better idea to let the 5 busy and the 5 unbusy pull from
>>>> centos.org
>>>>>> And have the other 90 pull from the 5 unbusy?
>>>>>> That should even the load better.
>>>>>>> On 04/05/2011 10:20 AM, Prof. P. Sriram wrote:
>>>>>>>> Maybe it's been discussed before, but would it not be worthwhile to
>>>> do a
>>>>>>>> DNS based thing for this? We create a temporary rsync source domain
>>>>>>>
>>>>>>> Thats quite a lot of work, I'm more keen on having ACL's in place
>>>> that
>>>>>>> only allow some specific mirrors ( maybe the 100 busiest ones ) to
>>>> pull
>>>>>>> from centos.org; and have everyone else pull from them.
>>>>>
>>>>>
>>>>> from 'busy' -i meant more like kernel.org / heanet.ie or
>>>> mirrorservice.org
>>>>>
>>>>> - KB
>>>>
>>>> Tiering the mirror distribution is pretty common, and honestly makes
>>>> things a *LOT* easier for everyone. I agree with the sentiments already
>>>> stated, automation is what makes this all doable. Removing things like
>>>> --delete from your mirrors, is just a PITA. Yes accidental upstream
>>>> removals will happen, but if the mirror infrastructure is structured
>>>> well it will propagate out and the fix will propagate out quickly.
>>>>
>>>> The way I've normally seen it is a small number (say 10) mirrors are
>>>> allowed to pull form the master machines, and servers are then
>>>> encouraged / forced to pull from those tier 1 mirrors. This means the
>>>> tier 1's can pull more often from the upstream, and everyone else can
>>>> make better use of the 1 & 10 gbps (and associated big hardware) links
>>>> some of the bigger mirrors have. Personally I think it's worthwhile,
>>>> and it's not too hard to implement.
>>>>
>>>> Keep in mind that the 'busier' servers (kernel.org at least) are in a
>>>> better position (hardware / bandwidth) to support a greater number of
>>>> people pulling from them. I would guess many of those "unused" mirrors
>>>> may not be able to support the deluge you could potentially be pointing
>>>> at them, this isn't universal but it's something to be aware of.
>>>>
>>>> - John 'Warthog9' Hawley
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