[Spacewalk-list] how to use 'file preservation'?

[Stephen Herr]

I agree that the mismatch between the initrd file created and the wrong 
location passed to merge-rd.sh is the root of this problem. I'm not sure 
how to fix it right now though, more investigation would be needed. 
Please file a bug:
https://bugzilla.redhat.com/enter_bug.cgi?product=Spacewalk

-Stephen

On 01/29/2015 10:56 AM, Yuriy Demchenko wrote:
> Thanks Stephen for the tip, i tried to run it with -vvv and got this
> error among all:
>> Preserve files! : ['/etc/mongod.conf', '/etc/configsvr.conf',
>> '/etc/mongos.conf']
>> - looking for Cobbler at http://spacewalk.mydomain.local:443/cobbler_api
>> Traceback (most recent call last):
>>   File "/usr/lib/python2.6/site-packages/koan/utils.py", line 568, in
>> __try_connect
>>     xmlrpc_server.ping()
>>   File "/usr/lib64/python2.6/xmlrpclib.py", line 1199, in __call__
>>     return self.__send(self.__name, args)
>>   File "/usr/lib64/python2.6/xmlrpclib.py", line 1489, in __request
>>     verbose=self.__verbose
>>   File "/usr/lib64/python2.6/xmlrpclib.py", line 1253, in request
>>     return self._parse_response(h.getfile(), sock)
>>   File "/usr/lib64/python2.6/xmlrpclib.py", line 1387, in _parse_response
>>     p.feed(response)
>>   File "/usr/lib64/python2.6/xmlrpclib.py", line 601, in feed
>>     self._parser.Parse(data, 0)
>> ExpatError: syntax error: line 1, column 49
>> - looking for Cobbler at https://spacewalk.mydomain.local:443/cobbler_api
>> - reading URL:
>> http://spacewalk.mydomain.local/cblr/svc/op/ks/system/localhost.localdomain:1
>>
>> install_tree: http://spacewalk.mydomain.local/ty/b5hJTnVG
>> downloading initrd initrd.img to /boot/initrd.img_koan
>> url=http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/initrd.img
>>
>> - reading URL:
>> http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/initrd.img
>>
>> downloading kernel vmlinuz to /boot/vmlinuz_koan
>> url=http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/vmlinuz
>>
>> - reading URL:
>> http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/vmlinuz
>>
>> - ['/sbin/grubby', '--add-kernel', '/boot/vmlinuz_koan', '--initrd',
>> '/boot/initrd.img_koan', '--args', '"ksdevice=link lang= text
>> ks=http://spacewalk.mydomain.local/cblr/svc/op/ks/system/localhost.localdomain:1
>> kssendmac ipv6.disable=1 "', '--make-default', '--title=kick1422545220']
>> - reboot to apply changes
>> CMD: ['/usr/sbin/merge-rd.sh', '/boot/initrd.img', '/boot/initrd.img',
>> '/tmp/ks-tree-shadow']
>> D: Sending back response(1, 'Error creating the new RAM disk',
>> {'status': 1, 'stderr': '', 'stdout': 'Usage: /usr/sbin/merge-rd.sh
>> SOURCERD DESTRD /path/to/merge/from\n'})
> In spacewalk webinterface action marked as 'failed' with reason 'Error
> creating the new RAM disk'entos6
> /tmp/ks-tree-shadow with copied configs are in fact created, but it
> seems 'merge-rd.sh' called with wrong parameters - there're no
> '/boot/initrd.img', koan created '/boot/initrd.img_koan' instead.
> Any ideas how to fix it?
>
> Yuriy Demchenko
>
> On 01/29/2015 06:01 PM, Stephen Herr wrote:
>> File preservation will only work with re-provisioning (through
>> Spacewalk, so not PXE booting), and it's expected that there's no
>> change to the kickstart file.
>>
>> It should work with what you've tried though.
>>
>> File preservation works by saving the files listed to a particular
>> place on the filesystem (/tmp/ks-tree-copy) when rhn_check picks up
>> the reprovision action, and then the kickstart file always contains a
>> section to copy files in that dir (if any) back onto the filesystem
>> after the kickstart. So the kickstart file will not change because it
>> always contains that section.
>>
>> Try scheduling another reprovision with that profile, running
>> "rhn_check -vvv" by hand to pick up the action so you can see the
>> verbose output on the console, and then 'shutdown -c' to cancel the
>> three minute reboot timer so you can poke around. Between the console
>> output and looking at /tmp/ks-tree-copy maybe that will give you a
>> hint about what's wrong.
>>
>> -Stephen
>>
>> On 01/29/2015 08:17 AM, Yuriy Demchenko wrote:
>>> Hi,
>>>
>>> I wonder how to use 'file preservation' function during kickstart? I
>>> need to re-provision several systems via kickstart, preserving several
>>> config files.
>>> I've created file preservation list in 'system->kickstart->file
>>> preservation', then checked this list in kickstart profile
>>> '<profilename> ->system details->file preservation', clicked 'update
>>> kickstart'
>>> however, I cant see any changes to the raw kickstart file
>>> and when I do re-provision with that kickstart (either via 'provision'
>>> tab in SW, or just pxe-booting with selected profile) required configs
>>> are not preserved.
>>> What am I missing?
>>> I'm using spacewalk-2.2
>>>
>>
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