def _do_migrate_nodes(self, migration_plan, delay):
self.logger.info("Migration: starting with plan %s and delay %s."
% (migration_plan, delay))
# TODO: use instead collections.Counter with Python 2.7
clouds = [dest_cloud for (_node, dest_cloud) in migration_plan]
new_vm_nb = collections.defaultdict(int)
for cloud in clouds:
new_vm_nb[cloud] += 1
try:
new_nodes = []
# TODO: make it parallel
for cloud, count in new_vm_nb.iteritems():
self.controller.add_context_replacement(dict(mysql_username='******',
mysql_password=self.root_pass),
cloud=cloud)
new_nodes.extend(self.controller.create_nodes(count,
agent.check_agent_process,
self.config.AGENT_PORT,
cloud))
self._start_mysqld(new_nodes, cloud)
self.config.addMySQLServiceNodes(new_nodes)
except Exception, ex:
# error happened: rolling back...
for node in new_nodes:
agent.stop(node.ip, self.config.AGENT_PORT)
self.controller.delete_nodes(new_nodes)
self.config.remove_nodes(new_nodes)
self.logger.exception('_do_migrate_nodes: Could not'
' start nodes: %s' % ex)
self.state = self.S_RUNNING
raise ex
def _do_migrate_finalize(self, old_nodes):
self.state = self.S_ADAPTING
for node in old_nodes:
agent.stop(node.ip, self.config.AGENT_PORT)
self.controller.delete_nodes(old_nodes)
self.config.remove_nodes(old_nodes)
self.state = self.S_RUNNING
self.logger.info("Migration: old nodes %s have been removed."
" END of migration." % old_nodes)
def _do_remove_nodes(self,rm_reg_nodes,rm_glb_nodes):
glb_nodes = self.config.get_glb_nodes()
nodesIp = ["%s:%s" % (node.ip, self.config.MYSQL_PORT) # FIXME: find real mysql port instead of default 3306
for node in rm_reg_nodes]
for glb in glb_nodes:
agent.remove_glbd_nodes(glb.ip, self.config.AGENT_PORT, nodesIp)
nodes = rm_reg_nodes + rm_glb_nodes
for node in nodes:
agent.stop(node.ip, self.config.AGENT_PORT)
for node in rm_reg_nodes:
volume_id=self.volumes_dict[node.ip]
self.detach_volume(volume_id)
self.destroy_volume(volume_id)
self.controller.delete_nodes(nodes)
self.config.remove_nodes(nodes)
if (len(self.config.get_nodes()) +len(self.config.get_glb_nodes())==0 ):
self.state=self.S_STOPPED
else :
self.state = self.S_RUNNING
def _do_add_nodes(self, node_type, count, cloud=None):
try:
start_cloud = self._init_cloud(cloud)
self.controller.add_context_replacement(dict(mysql_username='******',
mysql_password=self.root_pass),
cloud=start_cloud)
node_instances = self.controller.create_nodes(count,
agent.check_agent_process,
self.config.AGENT_PORT,
start_cloud)
if node_type == self.REGULAR_NODE:
self._start_mysqld(node_instances, start_cloud)
self.config.addMySQLServiceNodes(node_instances)
elif node_type == self.GLB_NODE:
self._start_glbd(node_instances)
self.config.addGLBServiceNodes(node_instances)
except Exception, ex:
# rollback
for node in node_instances:
agent.stop(node.ip, self.config.AGENT_PORT)
self.controller.delete_nodes(node_instances)
self.logger.exception('Could not add nodes: %s' % ex)
def _do_remove_nodes(self, nodes):
for node in nodes:
agent.stop(node.ip, self.config.AGENT_PORT)
self.controller.delete_nodes(nodes)
self.config.remove_nodes(nodes)
self.state = self.S_RUNNING
