[Pacemaker] Access CIB/CRM via IPC/Library?

[Andrew Beekhof]

On Sun, Oct 11, 2009 at 9:10 PM, Andrew Beekhof <andrew at beekhof.net> wrote:
> On Fri, Oct 9, 2009 at 3:26 PM, Colin <colin.hch at gmail.com> wrote:
>> Hi All,
>>
>> after having understood the concepts (if not all details) of
>> configuring Pacemaker ("Configuration Explained" does a good job) I
>> started checking out how to actually create/activate a configuration.
>>
>> Seems that there's some GUI (wherever it is, it's not included in my
>> packages, but we don't need it anyhow) and the command-line utilities
>> crm and cibadmin. However what we really need is a more direct access
>> in order to programmatically change the cluster configuration [without
>> calling out to the command-line utilities from Python or C].
>>
>> It also seems that crm and cibadmin use libcrmcommon to communicate
>> via the Unix sockets in /var/run/crm. Is this library documented
>> anywhere? Are there Python-bindings? Is there any other officially
>> supported API?
>
> For reading/writing the configuration there is also libcib.
> There is no written documentation but the cib.h header should be
> pretty easy to follow.
> The best place to see it in use is cibadmin.c
>
> The API itself is stable and doesn't change at all within stable series.
>

Oh, and there are no python bindings, but the command-line shell is
written in python... I'd highly recommend starting with that.