Re: FYI: 8.5 and 7.11 planning
On Fri May 20 14:55:30 2016 GMT+0200, Giorgio Pioda wrote:
> On Thu, May 19, 2016 at 09:45:52AM +0200, Giorgio Pioda wrote:
> > On Wed, May 18, 2016 at 09:15:21PM +0200, Wolfgang Schweer wrote:
> > > On Tue, May 17, 2016 at 05:34:44PM +0200, Giorgio Pioda wrote:
> > > > Well, what I see is that on old wheezy clients after a BrowsePoll
> > > > i get the printers queues exactly like on the server. On Jessie
> > > > clients after cups-browser work (and automatic BrowsePoll) I get the
> > > > queues that looks differently. Both BrowsePoll are getting
> > > > the queues from my jessie-tjener in productions since july 2015.
> > > >
> > > > I suspect that older cups-client gets ppd from tjener and that
> > > > the newer Jessie cups-clients get the queues from the tjener BUT
> > > > the ppd directly from the printer, just because of the new
> > > > default ppd distribution policy of cups server. IIRC I read
> > > > some time ago, somewhere, about this policy change in cups/ppd
> > > > distribution. Maybe I'm totally wrong; but the different looking queues
> > > > are there.
> > >
> > > Thanks for the feedback, Giorgio.
> > >
> > > As far as I know the printer detection on the network changed from cups
> > > to mdns. So now the package libnss-mdns must be installed to assure the
> > > detection. I've set up a Debian Edu jessie based VirtualBox environment.
> > > After installing libnss-mdns on a workstation applications were aware of
> > > the printers configured on tjener. The printers were added automaticly
> > > to /etc/cups/printers.conf on the workstation.
> > >
> > > Wolfgang
> > Hi,
> > I'll test it again in the afternoon.
> > Regard
> about nscd I've seen that in our network the netgroup cache is disabled only
> on tjener. I fear a little reactivating it, at least during school time.
Same here. The nscd cache issue only occurred on my production networks. So re-enabling caching is a no-option here, too.
> For libnss unfortunately we cant contribute since after a closer test on
> our network we realized that our ISP doesn't allow multicast traffic at all
> and the automatic discovery of printers happens only within a single switch/router.
On several setups libnss-mdns on clients and servers (i.e. on all machines with cupsd installed) works well.
Anothe issue is that hostnames via libnss-mdns get propagated as <host>.local. When browsing CUPS servers with a webbrowser, this gets spoiled by wpad.dat. The .local FQDN should be included in the list of hosts to be connected to directly (and through squid).
IIIRC, I committed that wpad.dat change on the d-e-c master branch already. Not 100% sure, though.
> Giorgio Pioda - Sysadmin SPSE-Tenero
> Cell +41 79 629 20 63
> Tel +41 58 468 62 48
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