From 6494fcc2e44d9d9310e3ebaa92582f4f78d08b75 Mon Sep 17 00:00:00 2001 From: LIU Yulong Date: Wed, 20 Feb 2019 16:47:42 +0800 Subject: [PATCH] Divide-and-conquer security group beasts In one specific compute node, the security group rules can be enormous quantity. This patch adds a step-by-step processing method to deal with the large number of the security group rules. And also changes or adds some LOG. Related-Bug: #1813703 Related-Bug: #1813704 Related-Bug: #1813707 Conflicts: neutron/common/constants.py Change-Id: I57bf27ec75cf848271c5a28b22beee12b8bd5faa (cherry picked from commit 6ac420df7eb3ed324669472c61fec41b3d9cb35b) --- neutron/agent/common/ovs_lib.py | 8 ++++++-- neutron/agent/securitygroups_rpc.py | 16 +++++++++++----- neutron/common/constants.py | 12 ++++++++++++ .../openvswitch/agent/ovs_neutron_agent.py | 6 +++++- .../tests/unit/agent/test_securitygroups_rpc.py | 6 +++--- 5 files changed, 37 insertions(+), 11 deletions(-) diff --git a/neutron/agent/common/ovs_lib.py b/neutron/agent/common/ovs_lib.py index 88f2c1fc7a7..cd2d4492cf4 100644 --- a/neutron/agent/common/ovs_lib.py +++ b/neutron/agent/common/ovs_lib.py @@ -440,10 +440,14 @@ class OVSBridge(BaseOVS): else: flow_strs = [_build_flow_expr_str(kw, action, strict) for kw in kwargs_list] + LOG.debug("Processing %d OpenFlow rules.", len(flow_strs)) if use_bundle: extra_param.append('--bundle') - self.run_ofctl('%s-flows' % action, extra_param + ['-'], - '\n'.join(flow_strs)) + + step = common_constants.AGENT_RES_PROCESSING_STEP + for i in range(0, len(flow_strs), step): + self.run_ofctl('%s-flows' % action, extra_param + ['-'], + '\n'.join(flow_strs[i:i + step])) def add_flow(self, **kwargs): self.do_action_flows('add', [kwargs]) diff --git a/neutron/agent/securitygroups_rpc.py b/neutron/agent/securitygroups_rpc.py index 9ad65e44182..7305340b78f 100644 --- a/neutron/agent/securitygroups_rpc.py +++ b/neutron/agent/securitygroups_rpc.py @@ -21,6 +21,7 @@ from oslo_log import log as logging import oslo_messaging from neutron.agent import firewall +from neutron.common import constants as common_constants from neutron.conf.agent import securitygroups_rpc as sc_cfg @@ -130,12 +131,17 @@ class SecurityGroupAgentRpc(object): self._apply_port_filter(device_ids) def _apply_port_filter(self, device_ids, update_filter=False): + step = common_constants.AGENT_RES_PROCESSING_STEP if self.use_enhanced_rpc: - devices_info = self.plugin_rpc.security_group_info_for_devices( - self.context, list(device_ids)) - devices = devices_info['devices'] - security_groups = devices_info['security_groups'] - security_group_member_ips = devices_info['sg_member_ips'] + devices = {} + security_groups = {} + security_group_member_ips = {} + for i in range(0, len(device_ids), step): + devices_info = self.plugin_rpc.security_group_info_for_devices( + self.context, list(device_ids)[i:i + step]) + devices.update(devices_info['devices']) + security_groups.update(devices_info['security_groups']) + security_group_member_ips.update(devices_info['sg_member_ips']) else: devices = self.plugin_rpc.security_group_rules_for_devices( self.context, list(device_ids)) diff --git a/neutron/common/constants.py b/neutron/common/constants.py index 809054e7539..8b98be69a78 100644 --- a/neutron/common/constants.py +++ b/neutron/common/constants.py @@ -253,3 +253,15 @@ EXT_PARENT_RESOURCE_MAPPING = { l3.FLOATINGIP: plugin_consts.L3 } EXT_PARENT_PREFIX = 'ext_parent' + +# Number of resources for neutron agent side functions to deal +# with large sets. +# Setting this value does not count on special conditions, it is just a human +# countable or scalable number. [1] gives us the method to test the scale +# issue. And we have tested the value of 1000, 500, 200, 100. But for 100, +# ovs-agent will have a lower timeout probability. And according to the +# testing result, step size 100 can indeed cost about 10% much more time +# than 500/1000. But such extra time looks inevitably needed to be sacrificed +# for the restart success rate. +# [1] http://paste.openstack.org/show/745685/ +AGENT_RES_PROCESSING_STEP = 100 diff --git a/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py b/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py index 14806ac545f..156430b0b12 100644 --- a/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py +++ b/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py @@ -1722,8 +1722,8 @@ class OVSNeutronAgent(l2population_rpc.L2populationRpcCallBackTunnelMixin, need_binding_devices = [] skipped_devices = set() binding_no_activated_devices = set() + start = time.time() if devices_added_updated: - start = time.time() (skipped_devices, binding_no_activated_devices, need_binding_devices, failed_devices['added']) = ( self.treat_devices_added_or_updated( @@ -1752,6 +1752,10 @@ class OVSNeutronAgent(l2population_rpc.L2populationRpcCallBackTunnelMixin, self._add_port_tag_info(need_binding_devices) self.sg_agent.setup_port_filters(added_ports, port_info.get('updated', set())) + LOG.info("process_network_ports - iteration:%(iter_num)d - " + "agent port security group processed in %(elapsed).3f", + {'iter_num': self.iter_num, + 'elapsed': time.time() - start}) failed_devices['added'] |= self._bind_devices(need_binding_devices) if 'removed' in port_info and port_info['removed']: diff --git a/neutron/tests/unit/agent/test_securitygroups_rpc.py b/neutron/tests/unit/agent/test_securitygroups_rpc.py index 5bef722f4ca..32695694abe 100644 --- a/neutron/tests/unit/agent/test_securitygroups_rpc.py +++ b/neutron/tests/unit/agent/test_securitygroups_rpc.py @@ -1001,7 +1001,7 @@ class SecurityGroupAgentEnhancedRpcTestCase( mock.call.defer_apply(), mock.call.remove_port_filter( self.fake_device), - ]) + ], any_order=True) def test_security_groups_rule_updated_enhanced_rpc(self): sg_list = ['fake_sgid1', 'fake_sgid3'] @@ -1058,7 +1058,7 @@ class SecurityGroupAgentEnhancedRpcTestCase( mock.call.update_port_filter(self.fake_device), mock.call.process_trusted_ports([])] - self.firewall.assert_has_calls(calls) + self.firewall.assert_has_calls(calls, any_order=True) def test_refresh_firewall_devices_enhanced_rpc(self): self.agent.prepare_devices_filter(['fake_device']) @@ -1081,7 +1081,7 @@ class SecurityGroupAgentEnhancedRpcTestCase( mock.call.update_port_filter(self.fake_device), mock.call.process_trusted_ports([]), ] - self.firewall.assert_has_calls(calls) + self.firewall.assert_has_calls(calls, any_order=True) def test_refresh_firewall_none_enhanced_rpc(self): self.agent.refresh_firewall([])