[et-mgmt-tools] Help using the Cobbler API in triggers

[Michael DeHaan]

Garrett Honeycutt wrote:
> Michael DeHaan wrote:
>> Jennifer Cranfill wrote:
>>> Garrett Honeycutt wrote:
>>>> My goal is to access a variable within Cobbler, $hostname for example,
>>>> and use that in a trigger that is run whenever a system is added. 
>>>> Below
>>>> is some pseudo code to demonstrate my aim.
>>>>
>>>> os.system("/usr/local/sbin/dostuff.sh $hostname")
>>>
>>> Cobbler passes the name of the system as the first argument to the 
>>> command. If your system name is the hostname, then in python you can 
>>> just use something simple like:
>>>
>>> machine = sys.argv[1]
>>>
>>> If your system name is not the hostname then you can query the 
>>> hostname of the system from Cobbler. Here is some python code I've 
>>> been using:
>>>
>>> from cobbler import api
>>> cobbler_api = api.BootAPI()
>>> systems = cobbler_api.systems()
>>> box = systems.find(sys.argv[1])
>>>
>>> I'm sure there are other (and probably better) ways as well.
>>>
>>> -- 
>>> Jennifer Cranfill
>>> Systems Engineer
>>> Sony Pictures Imageworks
>>>
>>> _______________________________________________
>>> et-mgmt-tools mailing list
>>> et-mgmt-tools at redhat.com
>>> https://www.redhat.com/mailman/listinfo/et-mgmt-tools
>>
>> Right!   I added that example here -- 
>> https://fedorahosted.org/cobbler/wiki/CobblerTriggers -- so other 
>> people could find it when they were
>> reading the docs.
>>
>> Thanks!
>>
>>
>> --Michael
>
> Thank you for all of your help. This is what I came up, not sure how 
> optimal it is, as I do not code python.

You do now :)


>
> ========= getcert.trigger - add/system/post trigger ===========
> #!/usr/bin/python
>
> import os
> import sys
>
> from cobbler import api
> cobbler_api = api.BootAPI()
>
> # this is the systemname, not the hostname, so be sure to use the FQDN 
> in the systemname
> machine = sys.argv[1]
>
> # location of getcert.sh script
> getcert_cmd = "/usr/local/sbin/getcert.sh"
>
> # set return code to 0 by default
> rc = 0
>
> # build the command string
> cmd = getcert_cmd + " " + machine
>
> # log to cobbler's logs
> cobbler_api.log("running - " + cmd)
>
> # run the command and set the return code
> rc = os.system(cmd)
>
> # exit with return code
> sys.exit(rc)
>
> ==== end code ====
>
> This allows me to run a script when I add a system that will 
> pre-generate puppet certs.
>
> -g
>