[clamav-users] A workaround for the major ClamAV DB update delays we have been experiencing

Dennis Peterson dennispe at inetnw.com
Mon Dec 10 23:34:45 EST 2018

You were using curl (I did remember that after I posted as I'd helped you sort 
out curl options to do what you wanted) to explore what was available on the 
servers compared to what was on the DNS TXT record, and that was outside 
process. It also ignored cdiff files that may have been available in a version 
that matched the TXT record. The purpose of the cdiff files is to cut down on 


On 12/10/18 6:34 PM, Paul Kosinski wrote:
> We ARE using freshclam to perform the actual update. And always have
> been!
> We've only been using curl (not wget, if that matters) to pull the first
> few bytes of the cvd to see if its version number matches what the DNS
> TXT query said.
> We do this because, after the conversion to Cloudflare, we were getting
> lots of FAILURES where *freshclam* said things were out of sync (and
> eventually disabled all the mirrors).
> And we have recently seen that our Web server sometimes can get the new
> updates (from IAD) *hours* before our main LAN does (from BOS).
> P.S. It's been quite frustrating getting some replies seemingly based on
> assumptions that we are doing things we shouldn't, when we aren't in
> fact doing those things. (Like not using freshclam.)
> On Mon, 10 Dec 2018 16:46:42 -0800
> Dennis Peterson <dennispe at inetnw.com> wrote:
>> Exactly right. We can't be blaming the ClamAV process when we don't
>> use the ClamAV process. People that don't use freshclam should have
>> no expectation of high reliability. In fact any expectations are
>> baseless when the wrong tools are employed.
>> dp
>> On 12/9/18 5:44 AM, Joel Esler (jesler) wrote:
>>> As it should be.  No one should be downloading the daily and main,
>>> (although thousands are), cdiffs were created for a reason.
>>> Sent from my  iPhone
>>>> On Dec 9, 2018, at 06:58, Eric Tykwinski <eric-list at truenet.com>
>>>> wrote:
>>>>   From back in archives, I think he’s using wget to just pull the
>>>> files, but freshclam would just pull the cdiffs and keep you up to
>>>> date on the next check.
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