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Hi,

sorry for no feedback, i've been doing more and more test and after enabled
the dnsmasq log i found the error which i'm not longer sure if is related
to having duplicated entries

dnsmasq-dhcp[21231]: 0 DHCPRELEASE(tap8ecf66b6-72) 192.168.111.24
fa:16:3e:72:04:82 unknown lease

Looking around it seems i'm hitting this bug [1] but not clear from the
description what was the problem on dnsmasp 2.59 (which comes wiht Fuel 5.1)

Any ideas?

Cheers,
Dani

[1] https://bugs.launchpad.net/neutron/+bug/1271344

On Wed, Jun 10, 2015 at 7:13 AM, Daniel Comnea <comnea.dani at gmail.com>
wrote:

> Thanks a bunch Kevin!
>
> I'll try this patch and report back.
>
> Dani
>
>
> On Tue, Jun 9, 2015 at 2:50 AM, Kevin Benton <blak111 at gmail.com> wrote:
>
>> Hi Daniel,
>>
>> I'm concerned that we are encountered out-of-order port events on the
>> DHCP agent side so the delete message is processed before the create
>> message. Would you be willing to apply a small patch to your dhcp agent to
>> see if it fixes the issue?
>>
>> If it does fix the issue, you should see occasional warnings in the DHCP
>> agent log that show "Received message for port that was already deleted".
>> If it doesn't fix the issue, we may be losing the delete event entirely. If
>> that's the case, it would be great if you can enable debuging on the agent
>> and upload a log of a run when it happens.
>>
>> Cheers,
>> Kevin Benton
>>
>> Here is the patch:
>>
>> diff --git a/neutron/agent/dhcp_agent.py b/neutron/agent/dhcp_agent.py
>> index 71c9709..9b9b637 100644
>> --- a/neutron/agent/dhcp_agent.py
>> +++ b/neutron/agent/dhcp_agent.py
>> @@ -71,6 +71,7 @@ class DhcpAgent(manager.Manager):
>>          self.needs_resync = False
>>          self.conf = cfg.CONF
>>          self.cache = NetworkCache()
>> +        self.deleted_ports = set()
>>          self.root_helper = config.get_root_helper(self.conf)
>>          self.dhcp_driver_cls =
>> importutils.import_class(self.conf.dhcp_driver)
>>          ctx = context.get_admin_context_without_session()
>> @@ -151,6 +152,7 @@ class DhcpAgent(manager.Manager):
>>          LOG.info(_('Synchronizing state'))
>>          pool = eventlet.GreenPool(cfg.CONF.num_sync_threads)
>>          known_network_ids = set(self.cache.get_network_ids())
>> +        self.deleted_ports = set()
>>
>>          try:
>>              active_networks = self.plugin_rpc.get_active_networks_info()
>> @@ -302,6 +304,10 @@ class DhcpAgent(manager.Manager):
>>      @utils.synchronized('dhcp-agent')
>>      def port_update_end(self, context, payload):
>>          """Handle the port.update.end notification event."""
>> +        if payload['port']['id'] in self.deleted_ports:
>> +            LOG.warning(_("Received message for port that was "
>> +                          "already deleted: %s"), payload['port']['id'])
>> +            return
>>          updated_port = dhcp.DictModel(payload['port'])
>>          network = self.cache.get_network_by_id(updated_port.network_id)
>>          if network:
>> @@ -315,6 +321,7 @@ class DhcpAgent(manager.Manager):
>>      def port_delete_end(self, context, payload):
>>          """Handle the port.delete.end notification event."""
>>          port = self.cache.get_port_by_id(payload['port_id'])
>> +        self.deleted_ports.add(payload['port_id'])
>>          if port:
>>              network = self.cache.get_network_by_id(port.network_id)
>>              self.cache.remove_port(port)
>>
>>
>>
>>
>>
>>
>>
>>
>> On Mon, Jun 8, 2015 at 8:26 AM, Daniel Comnea <comnea.dani at gmail.com>
>> wrote:
>>
>>> Any help, ideas please?
>>>
>>> Thx,
>>> Dani
>>>
>>> On Mon, Jun 8, 2015 at 9:25 AM, Daniel Comnea <comnea.dani at gmail.com>
>>> wrote:
>>>
>>>> + Operators
>>>>
>>>> Much thanks in advance,
>>>> Dani
>>>>
>>>>
>>>>
>>>>
>>>> On Sun, Jun 7, 2015 at 6:31 PM, Daniel Comnea <comnea.dani at gmail.com>
>>>> wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> I'm running IceHouse (build using Fuel 5.1.1) on Ubuntu where dnsmask
>>>>> version 2.59-4.
>>>>> I have a very basic network layout where i have a private net which
>>>>> has 2 subnets
>>>>>
>>>>>  2fb7de9d-d6df-481f-acca-2f7860cffa60 | private-net
>>>>>                    | e79c3477-d3e5-471c-a728-8d881cf31bee
>>>>> 192.168.110.0/24 |
>>>>> |
>>>>> |                                                         |
>>>>> f48c3223-8507-455c-9c13-8b727ea5f441 192.168.111.0/24 |
>>>>>
>>>>> and i'm creating VMs via HEAT.
>>>>> What is happening is that sometimes i get duplicated entries in [1]
>>>>> and because of that the VM which was spun up doesn't get an ip.
>>>>> The Dnsmask processes are running okay [2] and i can't see anything
>>>>> special/ wrong in it.
>>>>>
>>>>> Any idea why this is happening? Or are you aware of any bugs around
>>>>> this area? Do you see a problems with having 2 subnets mapped to 1
>>>>> private-net?
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>> Dani
>>>>>
>>>>> [1]
>>>>> /var/lib/neutron/dhcp/2fb7de9d-d6df-481f-acca-2f7860cffa60/addn_hosts
>>>>> [2]
>>>>>
>>>>> nobody    5664     1  0 Jun02 ?        00:00:08 dnsmasq --no-hosts
>>>>> --no-resolv --strict-order --bind-interfaces --interface=tapc9164734-0c
>>>>> --except-interface=lo
>>>>> --pid-file=/var/lib/neutron/dhcp/2fb7de9d-d6df-481f-acca-2f7860cffa60/pid
>>>>> --dhcp-hostsfile=/var/lib/neutron/dhcp/2fb7de9d-d6df-481f-acca-2f7860cffa60/host
>>>>> --addn-hosts=/var/lib/neutron/dhcp/2fb7de9d-d6df-481f-acca-2f7860cffa60/addn_hosts
>>>>> --dhcp-optsfile=/var/lib/neutron/dhcp/2fb7de9d-d6df-481f-acca-2f7860cffa60/opts
>>>>> --leasefile-ro --dhcp-authoritative
>>>>> --dhcp-range=set:tag0,192.168.110.0,static,86400s
>>>>> --dhcp-range=set:tag1,192.168.111.0,static,86400s --dhcp-lease-max=512
>>>>> --conf-file= --server=10.0.0.31 --server=10.0.0.32 --domain=openstacklocal
>>>>>
>>>>>
>>>>
>>>
>>> _______________________________________________
>>> OpenStack-operators mailing list
>>> OpenStack-operators at lists.openstack.org
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>>
>>>
>>
>>
>> --
>> Kevin Benton
>>
>
>
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