`cobbler system getks` fails after update to Satellite 5.6

Solution Verified - Updated -

Environment

  • Red Hat Satellite 5.6 upgraded from Satellite v 5.4.1
  • Red Hat Enterprise Linux 6

Issue

  • After updating to Satellite 5.6 on RHEL6 cobbler cannot render kickstart files when cobbler system records have been generated directly via command line.
  • Consequently systems added this way cannot be (re)installed
  • Re-installation broken after satellite update
  • After upgrading satellite from version 5.4.1 to 5.6 re-installation of systems based on the old cobbler system records (by toggling the netboot-enabled flag) doesn't work any more, generating the kickstart file fails
  • For newly created cobbler system records kickstart file creation works well
  • Re-installation of servers is part of our disaster recovery concept as well as for release management. Creating all cobbler records from scratch is a time consuming and error-prone task.
  • Is there a way to fix/patch the existing system records?
  • cobbler system getks --name=system returns with error:
# *** ERROR ***
#
# There is a templating error preventing this file from rendering correctly. 
#
# This is most likely not due to a bug in Cobbler and is something you can fix.
#
# Look at the message below to see what things are causing problems.  
#
# (1) Does the template file reference a $variable that is not defined?
# (2) is there a formatting error in a Cheetah directive?
# (3) Should dollar signs ($) be escaped that are not being escaped?
#
# Try fixing the problem and then investigate to see if this message goes
# away or changes.
#
# 
# 'ipv6_address'
#   File "/usr/lib/python2.6/site-packages/cobbler/templar.py", line 126, in render
#     data_out = t.respond()
# 
#   File "cheetah_DynamicallyCompiledCheetahTemplate_1420369693_24_11581.py", line 429, in respond
# 
#   File "cheetah_DynamicallyCompiledCheetahTemplate_1420369693_24_11581.py", line 151, in __errorCatcher13
# 
#   File "<string>", line 1, in <module>
# 
#   File "/usr/lib/python2.6/site-packages/cobbler/template_api.py", line 333, in SNIPPET
#     result = BuiltinTemplate.SNIPPET(self, file)
# 
#   File "DynamicallyCompiledCheetahTemplate.py", line 85, in SNIPPET
# 
#   File "/usr/lib64/python2.6/site-packages/Cheetah/Template.py", line 1601, in _handleCheetahInclude
#     self._CHEETAH__cheetahIncludes[_includeID].respond(trans)
# 
#   File "cheetah_DynamicallyCompiledCheetahTemplate_1420369693_49_14523.py", line 115, in respond
#

Resolution

  • For every system added via cobbler command line as described run the following for every interface:
# cobbler system edit --name=SYSTEM-NAME --interface=NIC \
--ipv6-address="" --ipv6-default-gateway="" --ipv6-mtu="" \
--ipv6-secondaries="" --ipv6-static-routes="" --mtu=""

Note: this must also be done for bonding interfaces

Root Cause

  • currently unknown, filed internal bz #1178515

Diagnostic Steps

  • On Satellite 5.4.1 system has been added as follows:
# cobbler system add --name=test54-2 --hostname=test54-2.example.com --ksmeta="veritaskey=some-lic-key" --netboot-enabled=1 --profile=test-rhel6-1:1:ORGA
# cobbler system edit --name=test54-2 --interface=eth0 --mac-address=de:ad:be:ef:21:21 --ip-address=1.2.2.112 --subnet=255.255.255.0 --static=1
# cobbler system edit --name=test54-2 --interface=eth1 --mac-address=de:ad:be:ef:21:23 --ip-address=1.2.3.112 --subnet=255.255.255.0 --static=1

  • cobbler system getks --name=test542 returns full output of kickstart profile

  • Check IPv6 configuration:

# cobbler system dumpvars --name=test54-2 | grep -i ipv6
#

Note: there is no IPv6 configuration present at this time

  • Update Satellite to 5.6 as documented

  • After updating to Satellite 5.6 run cobbler system getks --name=test542 and the following error is shown:

# *** ERROR ***
#
# There is a templating error preventing this file from rendering correctly. 
#
# This is most likely not due to a bug in Cobbler and is something you can fix.
#
# Look at the message below to see what things are causing problems.  
#
# (1) Does the template file reference a $variable that is not defined?
# (2) is there a formatting error in a Cheetah directive?
# (3) Should dollar signs ($) be escaped that are not being escaped?
#
# Try fixing the problem and then investigate to see if this message goes
# away or changes.
#
# 
# 'ipv6_address'
#   File "/usr/lib/python2.6/site-packages/cobbler/templar.py", line 126, in render
#     data_out = t.respond()
# 
#   File "cheetah_DynamicallyCompiledCheetahTemplate_1420369693_24_11581.py", line 429, in respond
# 
#   File "cheetah_DynamicallyCompiledCheetahTemplate_1420369693_24_11581.py", line 151, in __errorCatcher13
# 
#   File "<string>", line 1, in <module>
# 
#   File "/usr/lib/python2.6/site-packages/cobbler/template_api.py", line 333, in SNIPPET
#     result = BuiltinTemplate.SNIPPET(self, file)
# 
#   File "DynamicallyCompiledCheetahTemplate.py", line 85, in SNIPPET
# 
#   File "/usr/lib64/python2.6/site-packages/Cheetah/Template.py", line 1601, in _handleCheetahInclude
#     self._CHEETAH__cheetahIncludes[_includeID].respond(trans)
# 
#   File "cheetah_DynamicallyCompiledCheetahTemplate_1420369693_49_14523.py", line 115, in respond
#
  • Running cobbler system dumpvars --name=test54-2 | grep -i ipv6 returns:
# cobbler system dumpvars --name=test54-2 | grep -i ipv6
ipv6_autoconfiguration : False
ipv6_default_device :
  • Component
  • pxe

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