b008ef902d
1.Add [testenv:lower-constraints] 2.Add lower-constraints.txt 3.Check env:UPPER_CONSTRAINTS_FILE 4.Remove passenv parameters which are not required 5.Fix pep8 errors Change-Id: I8ec8aac38e80a6e2b8ce9e9dc70f0cf187c0ce7c
101 lines
3.6 KiB
Python
101 lines
3.6 KiB
Python
# (c) Copyright 2014,2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from freezer_dr.common.yaml_parser import YamlParser
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from freezer_dr.fencers.common.driver import FencerBaseDriver
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import libvirt
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from oslo_config import cfg
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from oslo_log import log
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import time
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CONF = cfg.CONF
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LOG = log.getLogger(__name__)
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class LibvirtDriver(FencerBaseDriver):
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def __init__(self, nodes, fencer_conf):
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super(LibvirtDriver, self).__init__(nodes, fencer_conf)
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self.parser = YamlParser(self.fencer_conf['credentials_file'])
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# initiate libvirt connection
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conn_name = self.fencer_conf.get('name', None)
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self.connection = libvirt.open(name=conn_name)
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def force_shutdown(self, node):
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target = self.connection.lookupByName(name=node.get('domain-name'))
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return target.destroy()
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def graceful_shutdown(self, node):
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target = self.connection.lookupByName(name=node.get('domain-name'))
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return target.shutdown()
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def status(self, node):
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target = self.connection.lookupByName(name=node.get('domain-name'))
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return target.isActive()
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def get_node_details(self, node):
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"""Loads the node's fencing information from ``credentials_file``
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:param node: a dict contains node ip or hostname
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:return: a dict contains node fencing information
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"""
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node_details = self.parser.find_server_by_ip(node.get('ip')) or \
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self.parser.find_server_by_hostname(node.get('host'))
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return node_details
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def fence(self):
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"""Implements the fencing procedure for server fencing using ipmi
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:return: a list of nodes and weather they're fenced or not!
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"""
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fenced_nodes = []
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for node in self.nodes:
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LOG.debug("fencing node {0}".format(node))
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# load node details
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node_details = self.get_node_details(node)
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# loop on the node number of n times trying to fence it gently,
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# if not force it!
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for retry in range(0, self.fencer_conf['retries']):
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if self.status(node=node_details):
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try:
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self.graceful_shutdown(node=node_details)
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except Exception as e:
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LOG.debug(e)
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else:
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node['status'] = True
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break
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time.sleep(self.fencer_conf['hold_period'])
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LOG.info('wait for %d seconds before retrying to gracefully '
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'shutdown' % self.fencer_conf['hold_period'])
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try:
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self.force_shutdown(node=node_details)
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except Exception as e:
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LOG.error(e)
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if not self.status(node=node_details):
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node['status'] = True
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else:
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node['status'] = False
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fenced_nodes.append(node)
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return fenced_nodes
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def get_info(self):
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return {
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'name': 'Libvirt Interface driver',
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'version': 1.1,
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'author': 'Hewlett-Packard Enterprise Company, L.P'
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}
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