[clamav-users] clamav-daemon do not start after upgrade

Sat Mar 26 12:59:57 UTC 2022

Hello guys, 
Thanks for the reply 
The problem is solved. 
the file /etc/group was on a 640 mode and the clamd process could not open it. 
After changing the mode to 644, the process has started. 

Regards 

----- On 25 Mar, 2022, at 18:06, clamav-users <clamav-users at lists.clamav.net> wrote: 

> Hi there,

> On Fri, 25 Mar 2022, Jean-Claude VERGEROLLE wrote:

> > After an apt upgrade, clamav-daemon do not start

> > System : debian buster 4.19.232-1
> > clamav version : 0.103.5+dfsg-0+deb10u1 amd64

> > I got this in the log /var/log/clamav/clamav.log
> > ...
> > ...
> > Fri Mar 25 13:00:11 2022 -> ERROR: Unknown group clamav

> > Can you help me ?

> Yes. :)

> I don't know what has changed nor why it has changed but it's a simple
> problem with a simple fix. At a guess there will be something that
> you did not tell us about what you've done, perhaps because you don't
> know you've done it, but it's possible that the mistake wasn't yours.

> Every process which runs on your system is 'owned' by what you can
> think of as a 'user'. The user is not necessarily a person. Users
> are just names like 'root' or 'ntp' or 'clamav' or 'Fred' or 'joe'.
> For each name there's an associated, unique number. Each name also
> belongs to a 'group'. Like a user, a group is just a name with an
> associated unique number. These four values (user ID, numeric UID,
> group ID, numeric group ID) are essential parts of the system which
> implements permissions in Unix-like operating systems. Whenever you
> use the '-l' option to the 'ls' command you'll see on the left of the
> resulting table a lot of information about the permissions which the
> system applies to these 'user' and 'group' IDs (and to 'other' IDs).

> After the upgrade it appears that you are trying to start a process
> with a group ID which is not valid, which likely means that

> EITHER

> (1) your configuration is telling the system to start the ClamAV
> daemon process with different owner and group IDs from those which
> were used last time you started it; at least the group ID does not
> exist on your system and probably never has done

> OR

> (2) someone or something has recently deleted at least the group ID
> 'clamav' on your system.

> With the information that you have given I can't tell which of the two
> explanations is right, but it doesn't really matter. All you need to
> do is find out what owner ID and group ID *should* be used for clamd
> (the ClamAV daemon) on your system and EITHER change the configuration
> file (probably something like /etc/clamav/clamd.conf) to have the
> right user and group IDs OR create the user and group IDs if they've
> somehow been deleted.

> The ClamAV documentation will tell you what you need to change if the
> change is needed in the clamd configuration file. If you need to
> create a user or group ID, the operating system documentation for the
> 'useradd' and 'groupadd' commands should tell you what you need to know.

> If you have backup copies of the configuration files you could compare
> them with the new versions and it would immediately be obvious what if
> anything has changed in the configuration.

> You keep backups of all sorts of important stuff, right?

> If you are still unsure what to do you can always remove and purge all
> the ClamAV packages from your system and then re-install them which in
> theory will give you a working setup. If it does not then perhaps the
> Debian package maintainers have done something silly - in that case I
> should expect to see a lot more messages like yours on this list soon. :/

> --

> 73,
> Ged.

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-- 

L'exemplarité ne se délègue pas! 

[ mailto: |  Jean-Claude  VERGEROLLE   ] 
Direction des systèmes d'information 

05 40 00 68 24 
[ http://www.u-bordeaux.fr/ ] 
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