Reviewed: https://review.openstack.org/557908
Committed:
https://git.openstack.org/cgit/openstack/neutron/commit/?id=7b0f6330d6f877f3d2093a64c2bca4c14334574c
Submitter: Zuul
Branch: master
commit 7b0f6330d6f877f3d2093a64c2bca4c14334574c
Author: Sławek Kapłoński <sla...@kaplonski.pl>
Date: Fri Mar 30 10:24:59 2018 +0200
Handle AgentNotFoundByTypeHost exception properly
During listing router_ids on host it is possible that on some hosts
there are no L3 agents.
In such case AgentNotFoundByTypeHost exception is raised in
neutron.db.agents_db module in _get_agent_by_type_and_host() method.
Now this exception is properly handled during listing routers on host.
Change-Id: Ia5ff1b57ef63c98b4ada4f2d46c45336e413be3d
Closes-Bug: #1737917
** Changed in: neutron
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1737917
Title:
NeutronServerTrytoFindL3agentOnComputeNodewhenWeUseLinuxBridge
Status in neutron:
Fix Released
Bug description:
Hi all Cool Developer of Openstack,I followed the pike install doc and
successful running openstack now,and In
Neutron configuration section,Verify operation Networking Option 2:
Self-service networks(I choosed Self-Servrice network to deploy on Centos7x64
everything up to date)there we see:
The output should indicate four agents on the controller node and one agent
on each compute node.
$ openstack network agent list
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| ID | Agent Type | Host |
Availability Zone | Alive | State | Binary |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| f49a4b81-afd6-4b3d-b923-66c8f0517099 | Metadata agent | controller |
None | True | UP | neutron-metadata-agent |
| 27eee952-a748-467b-bf71-941e89846a92 | Linux bridge agent | controller |
None | True | UP | neutron-linuxbridge-agent |
| 08905043-5010-4b87-bba5-aedb1956e27a | Linux bridge agent | compute1 |
None | True | UP | neutron-linuxbridge-agent |
| 830344ff-dc36-4956-84f4-067af667a0dc | L3 agent | controller |
nova | True | UP | neutron-l3-agent |
| dd3644c9-1a3a-435a-9282-eb306b4b0391 | DHCP agent | controller |
nova | True | UP | neutron-dhcp-agent |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
and I run this command on controller node too after setup and configuration
for openstack is over and then got this output:
[root@controller neutron]# openstack network agent list
+--------------------------------------+--------------------+------------+------
-------------+-------+-------+---------------------------+
| ID | Agent Type | Host |
Avail
ability Zone | Alive | State | Binary |
+--------------------------------------+--------------------+------------+------
-------------+-------+-------+---------------------------+
| 010608cc-01cf-4143-97d7-df617aaf2ac1 | Linux bridge agent | compute1 |
None
| :-) | UP | neutron-linuxbridge-agent |
| 09cd7c61-b874-44a2-afd1-691bedbb8a97 | Metadata agent | controller |
None
| :-) | UP | neutron-metadata-agent |
| 865bcc2f-183f-4c3a-8b05-b6724beca5f0 | L3 agent | controller |
nova
| :-) | UP | neutron-l3-agent |
| 960a7d2c-5345-4245-8494-3adf885a61ff | DHCP agent | controller |
nova
| :-) | UP | neutron-dhcp-agent |
| c2bb1518-817a-4d6e-a159-7ac01858f874 | Linux bridge agent | controller |
None
| :-) | UP | neutron-linuxbridge-agent |
+--------------------------------------+--------------------+------------+------
-------------+-------+-------+---------------------------+
seems running normally just like what we got in offical docs.and ip netns on
controller:
[root@controller neutron]# ip netns exec
qrouter-89466cea-7d58-4a45-92da-e636c0
958358 ping -c 5 www.bing.com
PING cn-0001.cn-msedge.net (202.89.233.100) 56(84) bytes of data.
64 bytes from 202.89.233.100 (202.89.233.100): icmp_seq=1 ttl=115 time=31.6 ms
64 bytes from 202.89.233.100 (202.89.233.100): icmp_seq=2 ttl=115 time=31.5 ms
64 bytes from 202.89.233.100 (202.89.233.100): icmp_seq=3 ttl=115 time=31.4 ms
64 bytes from 202.89.233.100 (202.89.233.100): icmp_seq=4 ttl=115 time=32.4 ms
64 bytes from 202.89.233.100 (202.89.233.100): icmp_seq=5 ttl=115 time=31.8 ms
--- cn-0001.cn-msedge.net ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4003ms
rtt min/avg/max/mdev = 31.490/31.810/32.405/0.397 ms
[root@controller neutron]# ip netns
qrouter-89466cea-7d58-4a45-92da-e636c0958358 (id: 2)
qdhcp-fca97929-aed3-45dc-9f19-f7ead767fbc3 (id: 0)
qdhcp-c08c44ed-d71e-4acb-b1a5-3ebc4715a01d (id: 1)
and every virtual machine on openstack runs perfectly(self network or
provider network,access to Internet),except one
day I log into compute node,and found the linuxbridge.log seems too big(over
300mb),quickly I use grep to filter out most INFO information and got so many
ERROR log like this(also the only one type of error happens every fix period):
2017-12-13 17:23:16.030 1334 INFO neutron.agent.securitygroups_rpc
[req-7fbf230a
-bf45-4817-a7e8-447005e1700a - - - - -] Security group member updated
[u'626f761
f-7451-42cf-afbf-724da51190c0']
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt [req-7fbf230a-bf45-4817-a7e8-447005e1700a - - - - -] Error occurred while
rem
oving port tapa97e89f4-2d: RemoteError: Remote error: AgentNotFoundByTypeHost
Ag
ent with agent_type=L3 agent and host=compute1 could not be found
[u'Traceback (most recent call last):\n', u' File
"/usr/lib/python2.7/site-pack
ages/oslo_messaging/rpc/server.py", line 160, in _process_incoming\n res =
se
lf.dispatcher.dispatch(message)\n', u' File
"/usr/lib/python2.7/site-packages/o
slo_messaging/rpc/dispatcher.py", line 213, in dispatch\n return
self._do_dis
patch(endpoint, method, ctxt, args)\n', u' File
"/usr/lib/python2.7/site-packag
es/oslo_messaging/rpc/dispatcher.py", line 183, in _do_dispatch\n result =
fu
nc(ctxt, **new_args)\n', u' File
"/usr/lib/python2.7/site-packages/neutron/plug
ins/ml2/rpc.py", line 234, in update_device_down\n
n_const.PORT_STATUS_DOWN,
host)\n', u' File
"/usr/lib/python2.7/site-packages/neutron/plugins/ml2/rpc.py"
, line 331, in notify_l2pop_port_wiring\n
l2pop_driver.obj.update_port_down(p
ort_context)\n', u' File
"/usr/lib/python2.7/site-packages/neutron/plugins/ml2/
drivers/l2pop/mech_driver.py", line 253, in update_port_down\n
admin_context,
agent_host, [port[\'device_id\']]):\n', u' File
"/usr/lib/python2.7/site-packa
ges/neutron/db/l3_agentschedulers_db.py", line 303, in
list_router_ids_on_host\n
context, constants.AGENT_TYPE_L3, host)\n', u' File
"/usr/lib/python2.7/sit
e-packages/neutron/db/agents_db.py", line 291, in
_get_agent_by_type_and_host\n
host=host)\n', u'AgentNotFoundByTypeHost: Agent with agent_type=L3 agent
and
host=compute1 could not be found\n'].
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt Traceback (most recent call last):
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt File
"/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/agent/_c
ommon_agent.py", line 336, in treat_devices_removed
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt cfg.CONF.host)
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt File "/usr/lib/python2.7/site-packages/neutron/agent/rpc.py", line 139,
in
update_device_down
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt agent_id=agent_id, host=host)
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt File "/usr/lib/python2.7/site-packages/neutron/common/rpc.py", line 162,
in
call
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt return self._original_context.call(ctxt, method, **kwargs)
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py",
line
169, in call
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt retry=self.retry)
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt File "/usr/lib/python2.7/site-packages/oslo_messaging/transport.py",
line 1
23, in _send
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt timeout=timeout, retry=retry)
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt File
"/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.p
y", line 578, in send
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt retry=retry)
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt File
"/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.p
y", line 569, in _send
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt raise result
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt RemoteError: Remote error: AgentNotFoundByTypeHost Agent with
agent_type=L3 a
gent and host=compute1 could not be found
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt [u'Traceback (most recent call last):\n', u' File
"/usr/lib/python2.7/site-p
ackages/oslo_messaging/rpc/server.py", line 160, in _process_incoming\n
res =
self.dispatcher.dispatch(message)\n', u' File
"/usr/lib/python2.7/site-package
s/oslo_messaging/rpc/dispatcher.py", line 213, in dispatch\n return
self._do_
dispatch(endpoint, method, ctxt, args)\n', u' File
"/usr/lib/python2.7/site-pac
kages/oslo_messaging/rpc/dispatcher.py", line 183, in _do_dispatch\n
result =
func(ctxt, **new_args)\n', u' File
"/usr/lib/python2.7/site-packages/neutron/p
lugins/ml2/rpc.py", line 234, in update_device_down\n
n_const.PORT_STATUS_DOW
N, host)\n', u' File
"/usr/lib/python2.7/site-packages/neutron/plugins/ml2/rpc.
py", line 331, in notify_l2pop_port_wiring\n
l2pop_driver.obj.update_port_dow
n(port_context)\n', u' File
"/usr/lib/python2.7/site-packages/neutron/plugins/m
l2/drivers/l2pop/mech_driver.py", line 253, in update_port_down\n
admin_conte
xt, agent_host, [port[\'device_id\']]):\n', u' File
"/usr/lib/python2.7/site-pa
ckages/neutron/db/l3_agentschedulers_db.py", line 303, in
list_router_ids_on_hos
t\n context, constants.AGENT_TYPE_L3, host)\n', u' File
"/usr/lib/python2.7/
site-packages/neutron/db/agents_db.py", line 291, in
_get_agent_by_type_and_host
\n host=host)\n', u'AgentNotFoundByTypeHost: Agent with agent_type=L3
agent a
nd host=compute1 could not be found\n'].
2017-12-13 17:23:16.172 1334 ERROR
neutron.plugins.ml2.drivers.agent._common_age
nt
2017-12-13 17:23:16.174 1334 INFO
neutron.plugins.ml2.drivers.agent._common_agen
t [req-7fbf230a-bf45-4817-a7e8-447005e1700a - - - - -] Attachment
tap8d780fbe-84
removed
2017-12-13 17:23:16.218 1334 INFO
neutron.plugins.ml2.drivers.agent._common_agen
t [req-7fbf230a-bf45-4817-a7e8-447005e1700a - - - - -] Port tap8d780fbe-84
updat
ed.
2017-12-13 17:23:16.218 1334 INFO
neutron.plugins.ml2.drivers.agent._common_agen
t [req-7fbf230a-bf45-4817-a7e8-447005e1700a - - - - -] Attachment
tap3ca9698e-61
removed
Here we see
"AgentNotFoundByTypeHost: Agent with agent_type=L3 agent a
nd host=compute1 could not be found\n"
So I come back to the compute node neutron configration section to
check if there was setup l3 agent on compute node I was missing,But
checked and found there never mentions that we need to install l3
agent on compute node.
I googled these keywords and found only a little posts about this
problem,and most posts was about dhcp agent cannot found or old
release of openstack,so Is there a bug on neutron what should I do to
avoid this,should I install l3 agent on compute node or just ignore
this error info since all VMs runns as usual?
-----------------------------------
Release: 11.0.3.dev21 on 2017-12-11 21:40
SHA: 1caba2d2e0f5c9752a858f28957d7dbb33640180
Source:
https://git.openstack.org/cgit/openstack/neutron/tree/doc/source/install/verify-option2.rst
URL: https://docs.openstack.org/neutron/pike/install/verify-option2.html
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https://bugs.launchpad.net/neutron/+bug/1737917/+subscriptions
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