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Bug 1144780 - cups starts before networking, therefore is not available
Summary: cups starts before networking, therefore is not available
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: cups
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Tim Waugh
QA Contact: qe-baseos-daemons
URL:
Whiteboard:
Depends On: 1153660
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-09-20 17:20 UTC by spamers
Modified: 2015-03-05 09:09 UTC (History)
5 users (show)

Fixed In Version: cups-1.6.3-17.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 1153660 (view as bug list)
Environment:
Last Closed: 2015-03-05 09:09:18 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:0386 0 normal SHIPPED_LIVE cups bug fix and enhancement update 2015-03-05 14:06:04 UTC

Description spamers 2014-09-20 17:20:02 UTC 
Description of problem:
Systemd starts cups before networking is ready, therefore cups doesn't want to start. More info in Steps to reproduce.
CUPS will try to start, but will throw error (from /var/log/cups/error_log:
Unable to bind socket for address 192.168.1.X:631 - Cannot assign requested address.)

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
!. Install cups from official repo and configure to listen for network connections.
2. enable cups in systemd (systemctl enable cups)
3. Configure networking in NetworkManager, e.g. like static ip address.
4. restart pc


Actual results:
5. CUPS is not working!

Expected results:
CUPS available through network.

Additional info:
Comment 2 Jiri Popelka 2014-09-24 08:51:40 UTC 
(In reply to spamers from comment #0)
> Steps to Reproduce:
> ... configure to listen for network connections.

Did you change the default configuration (cupsd.conf) somehow ?

note: Fedora's bug #756550 seems similar.
Comment 3 spamers 2014-09-24 12:58:15 UTC 
Yes, I added:
Listen 192.168.1.3:631
instead of
Listen localhost:631

As I wrote earlier, CUPS is unable to bind socket for address, because network is not ready.

What is more, dding
Wants=network.target
to
/etc/systemd/system/printer.target.wants/cups.service
solves problem. It's my suggestion.
Comment 4 Jiri Popelka 2014-09-25 09:30:19 UTC 
(In reply to spamers from comment #3)
> Yes, I added:
> Listen 192.168.1.3:631
> instead of
> Listen localhost:631
> 
> As I wrote earlier, CUPS is unable to bind socket for address, because
> network is not ready.

Thanks.
I haven't been able to reproduce it because in my case the network interfaces are always (regardless if I use NetworkManager or only legacy 'network') configured prior to systemd starting CUPS.

> What is more, adding
> Wants=network.target
> to /etc/systemd/system/printer.target.wants/cups.service
> solves problem. It's my suggestion.

I think
After=network.target
not
Wants=network.target
is what we want here.

http://www.freedesktop.org/software/systemd/man/systemd.unit.html
Comment 5 spamers 2014-09-25 10:24:48 UTC 
`After` sounds good. I'm glad my feedback and bug report was useful.
Comment 6 Tim Waugh 2014-10-16 13:49:52 UTC 
Fedora fix is:
http://pkgs.fedoraproject.org/cgit/cups.git/commit/?h=f21&id=a52574af07ff039fa4d3336c6042325e00a19975
Comment 10 Shane 2015-02-26 21:28:35 UTC 
I've also encountered this bug and, as above, fixed it by adding After=network.target to the cups.service Systemd unit file.

I came here to report this bug, only to find that it's been known about for nearly six months. I'm disappointed that no update has been released, given the fix is a simple one-line change to a configuration file. I wasted hours diagnosing this, thinking I must have been doing something wrong.
Comment 12 errata-xmlrpc 2015-03-05 09:09:18 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0386.html
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