samba - Feb 2024 - Samba 4.19.4 as printer server: printer are not show in browser

On Thu, 22 Feb 2024 12:27:26 +0100
Dario Lesca via samba <samba at lists.samba.org> wrote:
> Il giorno gio, 22/02/2024 alle 10.04 +0000, Rowland Penny via samba ha
> scritto:
> > when I clicked on the DCs icon, it opened and there was lp1.
> 
> Thank for your test, but ...
> 
> The printers added manually into smb.conf are always show and work
> also in RH and Arch Linux when this problem under analysis and still
> unknown occurs. 
> 
> On these for now 2 systems only the CUPS shared printers, included via
> [printers] session, are not shown in some cases.
> 
> Dario
> 

OK, I have been doing some thinking about this.
The 'browseable' parameter does not refer to the printers, it refers to
the 'printers' share itself and you do not want that showing on a
browser, which explains why the added separate printer is shown.

So why isn't Samba showing your cups printers ?
One reason could be that cups is starting after Samba and hence there
are no cups configurations for Samba to create printers from.

Rowland

On 23-02-2024 11:35, Rowland Penny via samba wrote:
> On Thu, 22 Feb 2024 12:27:26 +0100
> Dario Lesca via samba <samba at lists.samba.org> wrote:
>
>> Il giorno gio, 22/02/2024 alle 10.04 +0000, Rowland Penny via samba ha
>> scritto:
>>> when I clicked on the DCs icon, it opened and there was lp1.
>> Thank for your test, but ...
>>
>> The printers added manually into smb.conf are always show and work
>> also in RH and Arch Linux when this problem under analysis and still
>> unknown occurs.
>>
>> On these for now 2 systems only the CUPS shared printers, included via
>> [printers] session, are not shown in some cases.
>>
>> Dario
>>
>
> OK, I have been doing some thinking about this.
> The 'browseable' parameter does not refer to the printers, it
refers to
> the 'printers' share itself and you do not want that showing on a
> browser, which explains why the added separate printer is shown.
>
> So why isn't Samba showing your cups printers ?
> One reason could be that cups is starting after Samba and hence there
> are no cups configurations for Samba to create printers from.
>
> Rowland
>
Is "browseable" still a thing?

Is it not a netbios / nmbd feature and now obsolete?

- Kees.
>

Il giorno ven, 23/02/2024 alle 10.35 +0000, Rowland Penny via samba ha
scritto:
> 
> So why isn't Samba showing your cups printers ?
> One reason could be that cups is starting after Samba and hence there
> are no cups configurations for Samba to create printers from.
This in some cases is possible but not always true.

In my case I start CUPS at boot, and smb and nmb manually after connect
to it via ssh

Furthermore if I stop samba, then restart CUPS and start samba, the
printers are not listed until I print a job on a fake printer ...

... or,?as Andreas shows here :
https://bugzilla.redhat.com/show_bug.cgi?id=2263500#c9

I run this command:

# rpcclient ncacn_np:localhost -c enumprinters -Usomesmbuser


In your comment he suggests also the following hypothesis:
> It looks like listing shares with smbclient doesn't trigger an rpc
> call. I guess it only looks into the printer_list.tdb.
Dario