Open Stack

In Liberty, the L2 agent configuration moves from ml2_conf.ini to
openvswitch_agent.ini for OVS and linuxbridge_agent.ini for Linux bridge.

On Thu, Feb 18, 2016 at 10:51 PM, Mark Hayden <mark at haydensplace.com> wrote:

> Hi,
>
> I have recently installed a small openstack setup using the Liberty
> release (from Debian Sid packaging).  I have gotten as far as setting up a
> controller/network and a compute node with keystone, glance, cinder and
> nova services, but have gotten stuck trying to set up a DVR configuration
> of Neutron/openvswitch.
>
> I had an early OpenStack setup a few years ago (Essex release) but so much
> has changed from that "primitive" system with nova-network that I am pretty
> much a novice, but I am particulatly interested in the DVR setup to
> eliminate the dependency on a single network node for future expansion.
> However I have spent a few days not making no progress at all.
>
> I have tried to follow the relevant guide at
> http://docs.openstack.org/liberty/networking-guide/scenario-dvr-ovs.html
> as close as possible but I have not been able to get anything to work.  All
> my ports come up dead (DOWN state, and tagged 4095 in ovs-vsctl) when I set
> up the virtual router and I cannot launch any instances as they fail at the
> network port binding stage.
>
> In the nova-compute.log:
>
> 2016-02-17 19:01:51.160 2556 ERROR nova.compute.manager [instance:
> 848c9525-3f48-4747-bbf1-d0d8bf52697b] PortBindingFailed: Binding failed for
> port bf1cde62-7ac6-47a8-8fb9-85ec524d02bd, please check neutron logs for
> more information.
>
> In neutron-server.log:
>
> 2016-02-17 19:01:50.669 3224 ERROR neutron.plugins.ml2.managers
> [req-e6f1dbbd-d26c-456a-af6a-604c905dc194 b1ce670ebde640b0a0b159f01b18c04e
> ffbdd9d45cf84de0a204acfd0344ee6b - - -] Failed to bind port
> bf1cde62-7ac6-47a8-8fb9-85ec524d02bd on host hostserver-0001
>
> In neutron-openvswitch-agent.log:
>
> 2016-02-17 19:01:56.894 8021 INFO neutron.agent.common.ovs_lib
> [req-08c30666-e891-46ca-8200-be3d22285767 - - - - -] Port
> bf1cde62-7ac6-47a8-8fb9-85ec524d02bd not present in bridge br-int
>
> 2016-02-17 19:01:56.894 8021 INFO
> neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
> [req-08c30666-e891-46ca-8200-be3d22285767 - - - - -] port_unbound():
> net_uuid None not in local_vlan_map
>
> I have tried using VXLAN as shown in the guide as well as VLAN but both do
> the same thing.  However this seems to be more than a problem with the
> settings in the configuration files.  This was revealed when I turned on
> debug level logging.
>
> For some reason no matter what settings I try in ml2_conf.ini most of them
> are ignored--it doesn't matter how many services I stop and start or even
> rebooting the entire system (even completely wiping out the database and
> starting over with network config), ALL the settings in the [ml2] section
> and all the [ml2_type_*] sections are ignored and a set of default values
> are used.  The real sticking point seems to be that mechanism_drivers is
> always an empty list and tenant_network_types is always just ['local'].  As
> such nova refuses to start any instances on the networks I set up.
>
> Has anybody else seen this behaviour? For what it's worth here is what I
> currently have in my ml2_conf.ini file:
>
>
>
> [ml2]
> type_drivers = flat,vlan,gre,vxlan
> tenant_network_types = vlan,gre,vxlan
> mechanism_drivers = openvswitch,l2population
>
> [ml2_type_flat]
> flat_networks = public
>
> [ml2_type_vlan]
> network_vlan_ranges = vlans:3:63
>
> [ml2_type_gre]
> tunnel_id_ranges = 1000:1999
>
> [ml2_type_vxlan]
> vni_ranges = 2000:2999
> vxlan_group = 239.1.1.1
>
> [ovs]
> local_ip = 10.37.3.254
> bridge_mappings = public:br-out,vlans:br-ex
>
> [agent]
> l2_population = True
> tunnel_types = vxlan,gre
> enable_distributed_routing = True
> arp_responder = True
>
> [securitygroup]
> firewall_driver =
> neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
> enable_security_group = True
> enable_ipset = True
>
> and here is a sample of what appears in my logs:
>
> In neutron-server.log
>
> 2016-02-18 11:37:12.353 13857 DEBUG oslo_service.service [-]
> ml2_type_flat.flat_networks = [] log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.353 13857 DEBUG oslo_service.service [-]
> ml2.extension_drivers = [] log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.353 13857 DEBUG oslo_service.service [-]
> ml2.external_network_type = None log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.354 13857 DEBUG oslo_service.service [-]
> ml2.mechanism_drivers = [] log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.354 13857 DEBUG oslo_service.service [-] ml2.path_mtu
> = 0 log_opt_values /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.355 13857 DEBUG oslo_service.service [-]
> ml2.physical_network_mtus = [] log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.355 13857 DEBUG oslo_service.service [-]
> ml2.segment_mtu = 0 log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.355 13857 DEBUG oslo_service.service [-]
> ml2.tenant_network_types = ['local'] log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.356 13857 DEBUG oslo_service.service [-]
> ml2.type_drivers = ['local', 'flat', 'vlan', 'gre', 'vxlan', 'geneve']
> log_opt_values /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.356 13857 DEBUG oslo_service.service [-]
> oslo_concurrency.disable_process_locking = False log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.357 13857 DEBUG oslo_service.service [-]
> oslo_concurrency.lock_path = /var/lib/neutron/lock log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.357 13857 DEBUG oslo_service.service [-]
> ml2_type_geneve.max_header_size = 50 log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.358 13857 DEBUG oslo_service.service [-]
> ml2_type_geneve.vni_ranges = [] log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.358 13857 DEBUG oslo_service.service [-]
> ml2_type_vxlan.vni_ranges = [] log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
> 2016-02-18 11:37:12.358 13857 DEBUG oslo_service.service [-]
> ml2_type_vxlan.vxlan_group = None log_opt_values
> /usr/lib/python2.7/dist-packages/oslo_config/cfg.py:2233
>
> and also during init in same log file:
>
> 2016-02-17 20:49:20.683 20500 INFO neutron.plugins.ml2.managers [-]
> Configured type driver names: ['local', 'flat', 'vlan', 'gre', 'vxlan',
> 'geneve']
> 2016-02-17 20:49:20.687 20500 INFO neutron.plugins.ml2.drivers.type_flat
> [-] Allowable flat physical_network names: []
> 2016-02-17 20:49:20.696 20500 INFO neutron.plugins.ml2.drivers.type_vlan
> [-] Network VLAN ranges: {}
> 2016-02-17 20:49:20.702 20500 INFO neutron.plugins.ml2.driverstype_local
> [-] ML2 LocalTypeDriver initialization complete
> 2016-02-17 20:49:20.707 20500 INFO neutron.plugins.ml2.managers [-] Loaded
> type driver names: ['flat', 'geneve', 'vlan', 'gre', 'local', 'vxlan']
> 2016-02-17 20:49:20.708 20500 INFO neutron.plugins.ml2.managers [-]
> Registered types: ['flat', 'geneve', 'vlan', 'gre', 'local', 'vxlan']
> 2016-02-17 20:49:20.708 20500 INFO neutron.plugins.ml2.managers [-] Tenant
> network_types: ['local']
> 2016-02-17 20:49:20.709 20500 INFO neutron.plugins.ml2.managers [-]
> Configured extension driver names: []
> 2016-02-17 20:49:20.710 20500 INFO neutron.plugins.ml2.managers [-] Loaded
> extension driver names: []
> 2016-02-17 20:49:20.710 20500 INFO neutronplugins.ml2.managers [-]
> Registered extension drivers: []
> 2016-02-17 20:49:20.710 20500 INFO neutron.plugins.ml2.managers [-]
> Configured mechanism driver names: []
> 2016-02-17 20:49:20.711 20500 INFO neutronplugins.ml2.managers [-] Loaded
> mechanism driver names: []
> 2016-02-17 20:49:20.712 20500 INFO neutron.plugins.ml2.managers [-]
> Registered mechanism drivers: []
> 2016-02-17 20:49:20.722 20500 WARNING oslo_config.cfg [-] Option
> "username" from group "nova" is deprecated. Use option "user-name" from
> group "nova".
> 2016-02-17 20:49:20.821 20500 INFO neutron.plugins.ml2.managers [-]
> Initializing driver for type 'flat'
> 2016-02-17 20:49:20.822 20500 INFO neutron.plugins.ml2.drivers.type_flat
> [-] ML2 FlatTypeDriver initialization complete
> 2016-02-17 20:49:20.822 20500 INFO neutron.plugins.ml2.managers [-]
> Initializing driver for type 'geneve'
> 2016-02-17 20:49:20.823 20500 INFO neutron.plugins.ml2.drivers.type_tunnel
> [-] geneve ID ranges: []
> 2016-02-17 20:49:21008 20500 INFO neutron.plugins.ml2.managers [-]
> Initializing driver for type 'vlan'
> 2016-02-17 20:49:21.012 20500 INFO neutron.plugins.ml2.drivers.type_vlan
> [-] VlanTypeDriver initialization complete
> 2016-02-17 20:49:21.012 20500 INFO neutron.plugins.ml2.managers [-]
> Initializing driver for type 'gre'
> 2016-02-17 20:49:21.013 20500 INFO neutron.plugins.ml2.drivers.type_tunnel
> [-] gre ID ranges: []
> 2016-02-17 20:49:21.016 20500 INFO neutron.plugins.ml2.managers [-]
> Initializing driver for type 'local'
> 2016-02-17 20:49:21.016 20500 INFO neutron.plugins.ml2.managers [-]
> Initializing driver for type 'vxlan'
> 2016-02-17 20:49:21.017 20500 INFO neutron.plugins.ml2.drivers.type_tunnel
> [-] vxlan ID ranges: []
> 2016-02-17 20:49:21.021 20500 INFO neutron.plugins.ml2.plugin [-] Modular
> L2 Plugin initialization complete
>
> examining the actual code it appears my settings are always ignored and
> non-functional defaults are used.
>
> What am I missing?  The problem persisted even after wiping the netowrk
> config and database and set up from scratch.
>
> If anyone has an idea let me know--I can provide additional info if
> required.
>
> Thanks!
>
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