I'd like to use snippets in my kickstart file for selecting things
like partitioning, packages, and post portions based on either user-
provided ksmeta variables or the Cobbler-provided variables.
Unfortunately, I know very little Python, and my googling around for
Cheetah examples of what I'd like to do has been less then fruitful.
Example: In my /etc/cobbler/rhel5xen.ks kickstart template, I've
got ...
%packages
SNIPPET::packages_select
What I'd like that file /usr/lib/cobbler/snippets/packages_select is
to do something like (in psuedo-code here; if I could write the "real"
code, I wouldn't be asking. :-)
====================================
$package_snip_dir = /var/lib/cobbler/snippets/packages.d
If if the ksmeta var "$packages" has a value AND if $package_snip_dir/
$packages exists , use it ...
... else if $package_snip_dir/$name exists, use it ...
... else if $package_snip_dir/$profile exists, use it ...
... else, use $package_snip_dir/default.
===================================
I've tried making this work, with "#try ... #except ... #finally"
blocks, "#if ... #elif ... #then" blocks, "os.path.isfile", and so
on. All of my attempts have ended in various syntax errors or
failures that I'm at a loss to resolve.
I expect that the solution to this is simple, and I'm going to feel
really stupid when someone points that solution out to me, but I can
live with that. :-)
Below is my last, best attempt, along with the error that gets
generated.
[root ~]# cat /var/lib/cobbler/snippets/packages_select
#try
#include raw source='/var/lib/cobbler/snippets/packages.d/' +
$packages
#except
#try
#include raw source='/var/lib/cobbler/snippets/packages.d/' + $name
#except
#try
#include raw source='/var/lib/cobbler/snippets/packages.d/' +
$profile
#except
#try
#include raw "/var/lib/cobbler/snippets/packages.d/DEFAULT"
#end try
#end try
#end try
#end try
[root ~]# cobbler sync
sync distro: rhel4AS-x86_64
sync distro: rhel4AS-xen-x86_64
sync distro: rhel5Server-x86_64
sync distro: rhel5Server-xen-x86_64
sync profile: xen-big
Traceback (most recent call last):
File "/usr/lib/python2.4/site-packages/cobbler/action_sync.py",
line 373, in validate_kickstart_for_specific_profile
self.apply_template(kfile, meta, dest)
File "/usr/lib/python2.4/site-packages/cobbler/action_sync.py",
line 627, in apply_template
t = Template(source=data, searchList=[metadata])
File "/usr/lib64/python2.4/site-packages/Cheetah/Template.py", line
1204, in __init__
self._compile(source, file, compilerSettings=compilerSettings)
File "/usr/lib64/python2.4/site-packages/Cheetah/Template.py", line
1492, in _compile
keepRefToGeneratedCode=True)
File "/usr/lib64/python2.4/site-packages/Cheetah/Template.py", line
791, in compile
raise parseError
ParseError:
Error in the Python code which Cheetah generated for this template:
=
=
=
=
=
=
=
=
========================================================================
invalid syntax
(cheetah_DynamicallyCompiledCheetahTemplate_1207508119_67_52126.py,
line 210)
Line|Python Code
----|-------------------------------------------------------------
208 | try: # generated from line 51, col 4
209 | self._handleCheetahInclude("/var/lib/
cobbler/snippets/packages.d/DEFAULT", trans=trans, includeFrom="file",
raw=True)
210 | write('''
^
211 |%post
212 |
213 |''')
=
=
=
=
=
=
=
=
========================================================================
Here is the corresponding Cheetah code.
** I had to guess the line & column numbers, so they are probably
incorrect:
Line 61, column 1
Line|Cheetah Code
----|-------------------------------------------------------------
58 |
59 |%post
60 |
61 |$yum_config_stanza
^
62 |
63 |## post_select
64 |##
Error while rendering kickstart file /etc/cobbler/rhel5xen.ks to /var/
www/cobbler/kickstarts/xen-big/ks.cfg
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