[cups.bugs] [HIGH] STR #3186: Clients are not able to use the server's printers

Wed May 6 13:01:29 PDT 2009

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[STR New]

I have been using RedHat systems for print servers for a long time, but the
new cups program is not working for me.  

I am unable to get my new RedHat system to share its printers with other
RedHat systems or with my mac.  I have 37 print queues defined on the
server for 19 different printers.

Running /usr/lib/cups/backend/snmp does not list any printers on the print
server.  Using smpwalk I can see the printer.  See below.

The new print server is running 2.6.18-128.1.6.el5 with cups
1.3.7-8.el5_3.4

The clients are running 2.4.21-58.ELsmp and Mac  OS 10.5.6

I  created the print queues on the new print server using the gui printer
configuration.  I believe that is system-config-printer.    The server
settings have been set to "Share published printers".  I have selinux
disabled.  I have iptables and ip6tables set to allow connections on port
631.  If I turn off both ip services,
the status of printing across the network does not change.

I am using gc-hp106ps as my test queue on the server.  Printing to
gc-hp106ps works from the server.

I have tried the Device URI with and without the :9100 port on the end.

lpstat -l -p gc-hp106ps
<Printer gc-hp106ps>
Info HP Laserjet 9000 with postscript driver
Location GeoChem 106
DeviceURI lpd://128.148.124.126
State Idle
StateTime 1241550146
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
OpPolicy default
ErrorPolicy stop-printer
</Printer>

cupsd.conf  has been edited to contain. 
LogLevel warn

# Administrator user group...
SystemGroup sys root

Port 631

# Only listen for connections from the local machine.
Listen *:631
Listen /var/run/cups/cups.sock

# Show shared printers on the local network.
Browsing On
BrowseOrder allow,deny
# (Change '@LOCAL' to 'ALL' if using directed broadcasts from another
subnet
..)
BrowseAllow ALL
#  Added  - Changed cupsctl showing sharing=1 - mad 5/2009
#BrowseAddress ALL
BrowseAddress @LOCAL
Allow @LOCAL

# Default authentication type, when authentication is required...
# Changed from "default" - mad 5/2009
DefaultAuthType None

# Restrict access to the server... Added allow entries mad 5/2009
<Location />
  Order allow,deny
  Allow From *.subnet.edu
  Allow From computer1.edu
</Location>

Error messages on the RedHat client:

Network host 'newserver.network.brown.edu' is busy, down, or unreachable;
will retry...

The Mac client reports:

Attempting to connect to server for printer gc-hp106ps
Network host server is busy;

The Mac' s log file contains:

D [05/May/2009:17:38:11 -0400] Get-Printer-Attributes
ipp://localhost/printers/gc_hp101_color2
D [05/May/2009:17:38:11 -0400] cupsdProcessIPPRequest: 17 status_code=0
(successful-ok)
D [05/May/2009:17:38:12 -0400] cupsdReadClient: 15 POST / HTTP/1.1
D [05/May/2009:17:38:12 -0400] cupsdAuthorize: Authorized as  using
AuthRef
D [05/May/2009:17:38:12 -0400] Get-Printer-Attributes
ipp://localhost:631/printers/gc_hp106___testing_duplexing
D [05/May/2009:17:38:12 -0400] cupsdProcessIPPRequest: 15 status_code=0
(successful-ok)
D [05/May/2009:17:38:12 -0400] cupsdReadClient: 19 POST / HTTP/1.1
D [05/May/2009:17:38:12 -0400] cupsdAuthorize: No authentication data
provided.
D [05/May/2009:17:38:12 -0400] Get-Printer-Attributes
ipp://localhost:631/printers/gc_hp106
D [05/May/2009:17:38:12 -0400] cupsdProcessIPPRequest: 19 status_code=0
(successful-ok)

tail /var/log/cups/error_log  on the server

D [06/May/2009:10:45:19 -0400] Report: jobs-active=0
D [06/May/2009:10:45:19 -0400] Report: printers=102
D [06/May/2009:10:45:19 -0400] Report: printers-implicit=0
D [06/May/2009:10:45:19 -0400] Report: stringpool-string-count=6672
D [06/May/2009:10:45:19 -0400] Report: stringpool-alloc-bytes=31640
D [06/May/2009:10:45:19 -0400] Report: stringpool-total-bytes=149216
D [06/May/2009:10:45:19 -0400] cupsdNetIFUpdate: "lo" = localhost...
D [06/May/2009:10:45:19 -0400] cupsdNetIFUpdate: "eth0" = geops2...
D [06/May/2009:10:45:19 -0400] cupsdNetIFUpdate: "lo" = localhost...
D [06/May/2009:10:45:19 -0400] cupsdNetIFUpdate: "eth0" =
fe80::222:19ff:fe2b:

cupsctl
MaxLogSize=20000
SystemGroup=sys root
DefaultAuthType=None
_debug_logging=0
_remote_admin=0
_remote_any=0
_remote_printers=1
_share_printers=1
_user_cancel_any=1

nmap -sT -p 631 servers.ip.address
	to see if port 631 is open

edit vi snmp.conf  changing the community name.  You should see a printer.

CUPS_DEBUG_LEVEL=2 /usr/lib/cups/backend/snmp 2>&1 | tee snmp.log
ERROR: Unable to scan "ALL"!
DEBUG: 1.003 Scan complete!
[root at geops2 cups]# vi snmp.conf[root at geops2 cups]# CUPS_DEBUG_LEVEL=2
/usr/lib/cups/backend/snmp 2>&1 | tee snmp.log
DEBUG: Scanning for devices in "Geology" via "@LOCAL"...
DEBUG: 0.000 Sending 47 bytes to 128.148.124.255...
DEBUG: SEQUENCE 45 bytes
DEBUG:     INTEGER 1 bytes 0
DEBUG:     OCTET STRING 7 bytes "Geology"
DEBUG:     Get-Request-PDU 31 bytes
DEBUG:         INTEGER 4 bytes 1241635345
DEBUG:         INTEGER 1 bytes 0
DEBUG:         INTEGER 1 bytes 0
DEBUG:         SEQUENCE 17 bytes
DEBUG:             SEQUENCE 15 bytes
DEBUG:                 OID 11 bytes .1.3.6.1.2.1.25.3.2.1.2.1
DEBUG:                 NULL VALUE 0 bytes
DEBUG: 1.000 Scan complete!

snmpwalk -Cc -v 1 -c public gc-hp106.geo.brown.edu | tee snmpwalk.log |
grep hrDeviceType
HOST-RESOURCES-MIB::hrDeviceType.1 = OID:
HOST-RESOURCES-TYPES::hrDevicePrinter
HOST-RESOURCES-MIB::hrDeviceType.2 = OID:
HOST-RESOURCES-TYPES::hrDeviceDiskStorage
[root at geops2 cups]# snmpwalk -Cc -v 1 -c public gc-hp106.geo.brown.edu |
tee snmpwalk.log | grep hrDeviceDescr
HOST-RESOURCES-MIB::hrDeviceDescr.1 = STRING: HP LaserJet 9000 Series
HOST-RESOURCES-MIB::hrDeviceDescr.2 = STRING: Hewlett-Packard Dynamic RAM
Disk

Link: http://www.cups.org/str.php?L3186
Version: 1.3.7