"""
Pacemaker configuration - file ``/var/lib/pacemaker/cib/cib.xml``
=================================================================
This parser reads the XML in the Pacemaker configuration file and provides a
standard ElementTree interface to it. It also provides a ``nodes`` property
that lists all the nodes.
Sample input::
<cib crm_feature_set="3.0.9" validate-with="pacemaker-2.3" have-quorum="1" dc-uuid="4">
<configuration>
<crm_config>
<cluster_property_set id="cib-bootstrap-options">
<nvpair id="cib-bootstrap-options-have-watchdog" name="have-watchdog" value="false"/>
<nvpair id="cib-bootstrap-options-no-quorum-policy" name="no-quorum-policy" value="freeze"/>
</cluster_property_set>
</crm_config>
<nodes>
<node id="1" uname="foo"/>
<node id="2" uname="bar"/>
<node id="3" uname="baz"/>
</nodes>
<resources>
<clone id="dlm-clone">
</clone>
</resources>
<constraints>
<rsc_order first="dlm-clone" first-action="start" id="order-dlm-clone-clvmd-clone-mandatory" then="clvmd-clone" then-action="start"/>
<rsc_colocation id="colocation-clvmd-clone-dlm-clone-INFINITY" rsc="clvmd-clone" score="INFINITY" with-rsc="dlm-clone"/>
</constraints>
</configuration>
</cib>
Examples:
>>> cib = shared(CIB)
>>> opts = cib.dom.find(".//cluster_property_set[@id='cib-bootstrap-options']")
>>> opts.get('id')
'cib-bootstrap-options'
>>> cib.nodes
['foo', 'bar', 'baz']
"""
from .. import XMLParser, parser
from insights.specs import Specs
[docs]
@parser(Specs.cib_xml)
class CIB(XMLParser):
"""
Wraps a DOM of cib.xml
self.dom is an instance of ElementTree.
"""
@property
def nodes(self):
"""
Fetch the list of nodes and return their unames as a list.
"""
return [n.get("uname").lower() for n in self.get_elements(".//nodes/node")]