[clamav-users] Detected duplicate databases

Al Varnell alvarnell at mac.com
Thu Jan 11 09:37:00 UTC 2018


On Thu, Jan 11, 2018 at 01:15 AM, Hugo Deprez wrote:
> Hello,
> 
> thank you for the answer.
> I don't think my freshclam is trying to download the cdiff file because I
> use : ScriptedUpdates no
> 
> Is this parameter you are talking about incremental updates ?

Yes, that's what I was referring to.

> I know this is not bandwith efficient, but I had to many issues with
> freshclam and my local repository made by clamdownloader.pl

So you are using an option 3 private local mirror as described in <https://www.clamav.net/documents/private-local-mirrors>. Make sure you also change freshclam.conf "DatabaseMirror machine1.mylan" where machine1.mylan is the name of your mirror server.

Also make sure you are using the latest version of the clamavdownloader.pl <https://github.com/akissa/clamav-faq/blob/master/mirrors/clamdownloader.pl> 

The existing clamdownloader.pl script does not have any error correction it simply bails out if a downloaded file is not valid and is unable to retry different mirrors if one fails. That is the most likely reason for those 404 errors.

I have no experience with private local mirrors, but you might have better luck with the clamavmirror script <https://pypi.python.org/pypi/clamavmirror/0.0.3>.

-Al-

> Best regards,
> 
> On 10 January 2018 at 10:20, Al Varnell <alvarnell at mac.com <mailto:alvarnell at mac.com>> wrote:
> 
>> The first time freshclam pulls down a daily.cdiff file, your daily.cvd
>> file will be decompressed to daily.cld and the .cdiff file added to it.
>> From that point on you should only have the daily.cld file. One exception
>> is that if for some reason freshclam is unable to find needed .cdiff files
>> on a mirror, it will download a new .cvd file which will start the process
>> again.
>> 
>> It is possible to reconfigure freshclam to download .cvd files by
>> disabling incremental updates, but that would be very inefficient use of
>> bandwidth and mirror server time, so unless you have a overriding need for
>> that, I don't recommend it.
>> 
>> -Al-
>> 
>> On Wed, Jan 10, 2018 at 01:12 AM, Hugo Deprez wrote:
>>> Hello,
>>> 
>>> I have a question about daily.cvd and daily.cld files. If I understood
>>> correctly, those two files are almost the same : one is compressed, the
>>> other is not.
>>> Still I have an issue in my setup :
>>> 
>>> If I put both filtes in apache2 server (which act as PrivateMirror) :
>>> 
>>> -rw-r--r-- 1 www-data www-data 117892267 07.06.2017 23:38 main.cvd
>>> -rw-r--r-- 1 www-data www-data    153228 07.12.2017 03:17 bytecode.cvd
>>> lrwxrwxrwx 1 root     root             8 05.01.2018 10:14 main.cld ->
>>> main.cvd
>>> lrwxrwxrwx 1 root     root             9 05.01.2018 10:14 daily.cld ->
>>> daily.cvd
>>> lrwxrwxrwx 1 root     root            12 05.01.2018 10:14 bytecode.cld ->
>>> bytecode.cvd
>>> -rw-r--r-- 1 www-data www-data  43804052 10.01.2018 06:17 daily.cvd
>>> 
>>> On the client side I have this Warning :
>>> 
>>> LibClamAV Warning: Detected duplicate databases /var/lib/clamav/daily.cvd
>>> and /var/lib/clamav/daily.cld, please manually remove one of them
>>> 
>>> 
>>> But If I remove the *.cld files on my PrivateMirror I got multiples 404
>>> errors from the Freshclam clients.
>>> 
>>> Is there a way to configure Freshclam in order to grabe only the cvd
>> files
>>> ?
>>> 
>>> Best regards,
>> 
>> _______________________________________________
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>> clamav-users at lists.clamav.net <mailto:clamav-users at lists.clamav.net>
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>> 
>> 
>> Help us build a comprehensive ClamAV guide:
>> https://github.com/vrtadmin/clamav-faq
>> 
>> http://www.clamav.net/contact.html#ml
>> 
> _______________________________________________
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> 
> 
> Help us build a comprehensive ClamAV guide:
> https://github.com/vrtadmin/clamav-faq
> 
> http://www.clamav.net/contact.html#ml

-Al-
-- 
Al Varnell
Mountain View, CA




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