def create_pool(self, context, pool):
agent = self.pool_scheduler.schedule(self.plugin, context, pool,
self.device_driver)
if not agent:
raise lbaas_agentscheduler.NoEligibleLbaasAgent(pool_id=pool['id'])
self.agent_rpc.create_pool(context, pool, agent['host'],
self.device_driver)
def reschedule_loadbalancer_instance(self, plugin, context, loadbalancer,
device_driver):
"""Reschedule loadbalancer to a new lbaas-agent
Remove the loadbalancer from the lbaas-agent(s) currently hosting it and
schedule it again
"""
cur_agent = plugin.get_lbaas_agent_hosting_loadbalancer(
context, loadbalancer.id)
LOG.info(
_('Reschedule Loadbalancer %(loadbalancer_id)s been hosted'
' by lbaas agent %(agent)s'), {
'loadbalancer_id': id,
'agent': cur_agent
})
with context.session.begin(subtransactions=True):
if cur_agent:
self._unbind_loadbalancer(context, loadbalancer.id,
cur_agent['agent']['id'])
else:
LOG.error("Reschedule Loadbalancer %s not found agent", id)
new_agent = self.schedule(plugin, context, loadbalancer,
device_driver)
LOG.info(
_('Reschedule Loadbalancer %(loadbalancer_id)s to '
' agent %(agent)s'), {
'loadbalancer_id': id,
'agent': new_agent
})
if not new_agent:
raise lbaas_agentscheduler.NoEligibleLbaasAgent(
loadbalancer_id=id)
return new_agent
def create_pool(self, context, pool):
agent = self.pool_scheduler.schedule(self.plugin, context, pool,
self.device_driver) #首先通过agent scheduler分配agent：从数据库agents表中查询类型为Loadbalancer agent,admin_state_up状态为Active的lbaas-agent
if not agent:
raise lbaas_agentscheduler.NoEligibleLbaasAgent(pool_id=pool['id'])
self.agent_rpc.create_pool(context, pool, agent['host'],
self.device_driver)
def create_pool(self, context, pool):
LOG.info(_("Pool to be created: %s" % repr(pool)))
#This is where we pick an agent for this pool (and related resources)
agent = self.pool_scheduler.schedule(self.plugin, context, pool)
if not agent:
raise lbaas_agentscheduler.NoEligibleLbaasAgent(pool_id=pool['id'])
network_info = self._get_pool_network_info(context, pool)
#allocate a snat port/ipaddress on the subnet if one doesn't exist
port = self._create_snatport_for_subnet_if_not_exists(
context, pool['tenant_id'], pool['subnet_id'], network_info)
self.agent_rpc.create_pool(context, pool, network_info, agent['host'])
LOG.info(_('create_pool rpc sent to loadbalancer agent...'))
def create_loadbalancer_instance(self, context, loadbalancer):
agent = self.loadbalancer_scheduler.schedule(self.plugin, context,
loadbalancer,
self.device_driver)
if not agent:
LOG.warning(
_(" LoadBalancer '%(loadbalancer)s' can not be created"
" because no eligible lbaas-agent can be found. ") %
{'loadbalancer': loadbalancer.id})
raise lbaas_agentscheduler.NoEligibleLbaasAgent(
loadbalancer_id=loadbalancer.id)
#LOG.info("create_loadbalancer_instance deployed_loadbalancer_ids
# add %s", loadbalancer.id)
#self.deployed_loadbalancer_ids.add(loadbalancer.id)
self.agent_rpc.create_loadbalancer(context, loadbalancer.to_dict(),
agent['agent']['host'],
self.device_driver)
def create_pool(self, context, pool):
if not self.pool_scheduler.schedule(self.plugin, context, pool):
raise lbaas_agentscheduler.NoEligibleLbaasAgent(pool_id=pool['id'])