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[Bug 1511722] [NEW] VM loses connectivity on floating ip association when using l3_ha

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Public bug reported:

I not sure if my issue is related to this bug
https://bugs.launchpad.net/neutron/+bug/1389880, it's new one or it's a
misconfiguration, but I have the same symptoms.

If I create a new router in HA ( # neutron router-create --ha=True
router01), everything works fine.

When I create a new router without HA flag, if I have an instance with
one floating IP and then I assign a floating IP to other instance, I
lose external connectivity to both instance (doesn't matter the number
of instances, I lose external connectivity with all of them) until I
connect to anyone by vnc and I ping to external/internet IP, and then
everything works fine again.

Sorry, English is not my native language.

Ubuntu 14.04
Open vSwitch 2.3.2
Kilo 2015.1.1

root@network01:/home/administrator# cat /etc/neutron/neutron.conf | grep -v ^$ | grep -v ^#
[DEFAULT]
verbose = False
rpc_backend = rabbit
auth_strategy = keystone
core_plugin = ml2
service_plugins = router
allow_overlapping_ips = True
dhcp_agents_per_network = 2
l3_ha = True
max_l3_agents_per_router = 2
min_l2_agents_per_router = 2
[matchmaker_redis]
[matchmaker_ring]
[quotas]
[agent]
root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
[keystone_authtoken]
auth_uri = http://10.8.11.120:5000
auth_url = http://10.8.11.120:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = neutron
password = secret
[database]
[nova]
[oslo_concurrency]
lock_path = $state_path/lock
[oslo_policy]
[oslo_messaging_amqp]
[oslo_messaging_qpid]
[oslo_messaging_rabbit]
rabbit_hosts = controller01:5672,controller02:5672
rabbit_userid = openstack
rabbit_password = secret
rabbit_retry_interval = 1
rabbit_retry_backoff = 2
rabbit_max_retries = 0
rabbit_durable_queues = True
rabbit_ha_queues = True

root@network01:/home/administrator# cat /etc/neutron/l3_agent.ini | grep -v ^$ | grep -v ^#
[DEFAULT]
verbose = True
interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
external_network_bridge =
router_delete_namespaces = True

root@network01:/home/administrator# cat /etc/neutron/plugins/ml2/ml2_conf.ini | grep -v ^$ | grep -v ^#
[ml2]
type_drivers = flat,vlan,gre,vxlan
tenant_network_types = gre
mechanism_drivers = openvswitch
[ml2_type_flat]
flat_networks = external
[ml2_type_vlan]
[ml2_type_gre]
tunnel_id_ranges = 1:1000
[ml2_type_vxlan]
[securitygroup]
enable_security_group = True
enable_ipset = True
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
[ovs]
local_ip = 192.168.0.101
bridge_mappings = external:br-ex
[agent]
tunnel_types = gre

root@compute01:/home/ubuntu# cat /etc/neutron/neutron.conf | grep -v ^$ | grep -v ^#
[DEFAULT]
verbose = True
rpc_backend = rabbit
auth_strategy = keystone
core_plugin = ml2
service_plugins = router
allow_overlapping_ips = True
[matchmaker_redis]
[matchmaker_ring]
[quotas]
[agent]
root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
[keystone_authtoken]
auth_uri = http://10.8.11.120:5000
auth_url = http://10.8.11.120:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = neutron
password = secret
[database]
[nova]
[oslo_concurrency]
lock_path = $state_path/lock
[oslo_policy]
[oslo_messaging_amqp]
[oslo_messaging_qpid]
[oslo_messaging_rabbit]
rabbit_hosts = controller01:5672,controller02:5672
rabbit_userid = openstack
rabbit_password = secret
rabbit_retry_interval = 1
rabbit_retry_backoff = 2
rabbit_max_retries = 0
rabbit_durable_queues = True
rabbit_ha_queues = True

root@compute01:/home/ubuntu# cat /etc/neutron/plugins/ml2/ml2_conf.ini | grep -v ^$ | grep -v ^#
[ml2]
type_drivers = flat,vlan,gre,vxlan
tenant_network_types = gre
mechanism_drivers = openvswitch
[ml2_type_flat]
[ml2_type_vlan]
[ml2_type_gre]
tunnel_id_ranges = 1:1000
[ml2_type_vxlan]
[securitygroup]
enable_security_group = True
enable_ipset = True
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
[ovs]
local_ip = 192.168.0.105
[agent]
tunnel_types = gre

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: kilo neutron

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1511722

Title:
  VM loses connectivity on floating ip association when using l3_ha

Status in neutron:
  New

Bug description:
  I not sure if my issue is related to this bug
  https://bugs.launchpad.net/neutron/+bug/1389880, it's new one or it's
  a misconfiguration, but I have the same symptoms.

  If I create a new router in HA ( # neutron router-create --ha=True
  router01), everything works fine.

  When I create a new router without HA flag, if I have an instance with
  one floating IP and then I assign a floating IP to other instance, I
  lose external connectivity to both instance (doesn't matter the number
  of instances, I lose external connectivity with all of them) until I
  connect to anyone by vnc and I ping to external/internet IP, and then
  everything works fine again.

  Sorry, English is not my native language.

  Ubuntu 14.04
  Open vSwitch 2.3.2
  Kilo 2015.1.1

  root@network01:/home/administrator# cat /etc/neutron/neutron.conf | grep -v ^$ | grep -v ^#
  [DEFAULT]
  verbose = False
  rpc_backend = rabbit
  auth_strategy = keystone
  core_plugin = ml2
  service_plugins = router
  allow_overlapping_ips = True
  dhcp_agents_per_network = 2
  l3_ha = True
  max_l3_agents_per_router = 2
  min_l2_agents_per_router = 2
  [matchmaker_redis]
  [matchmaker_ring]
  [quotas]
  [agent]
  root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
  [keystone_authtoken]
  auth_uri = http://10.8.11.120:5000
  auth_url = http://10.8.11.120:35357
  auth_plugin = password
  project_domain_id = default
  user_domain_id = default
  project_name = service
  username = neutron
  password = secret
  [database]
  [nova]
  [oslo_concurrency]
  lock_path = $state_path/lock
  [oslo_policy]
  [oslo_messaging_amqp]
  [oslo_messaging_qpid]
  [oslo_messaging_rabbit]
  rabbit_hosts = controller01:5672,controller02:5672
  rabbit_userid = openstack
  rabbit_password = secret
  rabbit_retry_interval = 1
  rabbit_retry_backoff = 2
  rabbit_max_retries = 0
  rabbit_durable_queues = True
  rabbit_ha_queues = True

  root@network01:/home/administrator# cat /etc/neutron/l3_agent.ini | grep -v ^$ | grep -v ^#
  [DEFAULT]
  verbose = True
  interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
  external_network_bridge =
  router_delete_namespaces = True

  root@network01:/home/administrator# cat /etc/neutron/plugins/ml2/ml2_conf.ini | grep -v ^$ | grep -v ^#
  [ml2]
  type_drivers = flat,vlan,gre,vxlan
  tenant_network_types = gre
  mechanism_drivers = openvswitch
  [ml2_type_flat]
  flat_networks = external
  [ml2_type_vlan]
  [ml2_type_gre]
  tunnel_id_ranges = 1:1000
  [ml2_type_vxlan]
  [securitygroup]
  enable_security_group = True
  enable_ipset = True
  firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
  [ovs]
  local_ip = 192.168.0.101
  bridge_mappings = external:br-ex
  [agent]
  tunnel_types = gre

  root@compute01:/home/ubuntu# cat /etc/neutron/neutron.conf | grep -v ^$ | grep -v ^#
  [DEFAULT]
  verbose = True
  rpc_backend = rabbit
  auth_strategy = keystone
  core_plugin = ml2
  service_plugins = router
  allow_overlapping_ips = True
  [matchmaker_redis]
  [matchmaker_ring]
  [quotas]
  [agent]
  root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
  [keystone_authtoken]
  auth_uri = http://10.8.11.120:5000
  auth_url = http://10.8.11.120:35357
  auth_plugin = password
  project_domain_id = default
  user_domain_id = default
  project_name = service
  username = neutron
  password = secret
  [database]
  [nova]
  [oslo_concurrency]
  lock_path = $state_path/lock
  [oslo_policy]
  [oslo_messaging_amqp]
  [oslo_messaging_qpid]
  [oslo_messaging_rabbit]
  rabbit_hosts = controller01:5672,controller02:5672
  rabbit_userid = openstack
  rabbit_password = secret
  rabbit_retry_interval = 1
  rabbit_retry_backoff = 2
  rabbit_max_retries = 0
  rabbit_durable_queues = True
  rabbit_ha_queues = True

  root@compute01:/home/ubuntu# cat /etc/neutron/plugins/ml2/ml2_conf.ini | grep -v ^$ | grep -v ^#
  [ml2]
  type_drivers = flat,vlan,gre,vxlan
  tenant_network_types = gre
  mechanism_drivers = openvswitch
  [ml2_type_flat]
  [ml2_type_vlan]
  [ml2_type_gre]
  tunnel_id_ranges = 1:1000
  [ml2_type_vxlan]
  [securitygroup]
  enable_security_group = True
  enable_ipset = True
  firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
  [ovs]
  local_ip = 192.168.0.105
  [agent]
  tunnel_types = gre

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