Open Stack

Hi Lucas,

My networking-ovn-metadata-agent.service is running with user neutron

[root at zu-ovn-compute1 ~]# cat
/usr/lib/systemd/system/networking-ovn-metadata-agent.service
[Unit]
Description=OpenStack networking-ovn Metadata Agent
After=syslog.target network.target openvswitch.service
Requires=openvswitch.service

[Service]
Type=simple
User=neutron

But the sock is listen in openvswitch user.

[root at zu-ovn-compute1 ~]# cd /var/run/openvswitch/
[root at zu-ovn-compute1 openvswitch]# ls -lh
total 12K
srwxr-x---. 1 openvswitch hugetlbfs 0 Agu 16 10:28 br-int.mgmt
srwxr-x---. 1 openvswitch hugetlbfs 0 Agu 16 10:28 br-int.snoop
srwxr-x---. 1 openvswitch hugetlbfs 0 Agu 16 10:28 br-provider.mgmt
srwxr-x---. 1 openvswitch hugetlbfs 0 Agu 16 10:28 br-provider.snoop
srwxr-x---. 1 openvswitch hugetlbfs 0 Agu 16 10:27 db.sock

I have try to change the user in networking-ovn-metadata-agent.service from
neutron to root and the service is running.

[root at zu-ovn-compute0 openvswitch]# cat
/usr/lib/systemd/system/networking-ovn-metadata-agent.service
[Unit]
Description=OpenStack networking-ovn Metadata Agent
After=syslog.target network.target openvswitch.service
Requires=openvswitch.service

[Service]
Type=simple
User=root
PermissionsStartOnly=true
ExecStart=/usr/bin/networking-ovn-metadata-agent --config-file
/etc/neutron/plugins/networking-ovn/networking-ovn-metadata-agent.ini
--config-dir /etc/neutron/conf.d/networking-ovn-metadata-agent --log-file
/var/log/neutron/networking-ovn-metadata-agent.log
PrivateTmp=false
KillMode=process
Restart=on-failure

[Install]
WantedBy=multi-user.target
[root at zu-ovn-compute0 openvswitch]# systemctl status
networking-ovn-metadata-agent.service
● networking-ovn-metadata-agent.service - OpenStack networking-ovn Metadata
Agent
   Loaded: loaded
(/usr/lib/systemd/system/networking-ovn-metadata-agent.service; enabled;
vendor preset: disabled)
   Active: active (running) since Jum 2019-08-16 13:13:24 EDT; 4min 5s ago
 Main PID: 18692 (networking-ovn-)
    Tasks: 3
   CGroup: /system.slice/networking-ovn-metadata-agent.service
           ├─18692 /usr/bin/python2 /usr/bin/networking-ovn-metadata-agent
--config-file
/etc/neutron/plugins/networking-ovn/networking-ovn-metadata-agent.ini
--conf...
           ├─18710 /usr/bin/python2 /usr/bin/networking-ovn-metadata-agent
--config-file
/etc/neutron/plugins/networking-ovn/networking-ovn-metadata-agent.ini
--conf...
           └─18711 /usr/bin/python2 /usr/bin/networking-ovn-metadata-agent
--config-file
/etc/neutron/plugins/networking-ovn/networking-ovn-metadata-agent.ini
--conf...

Agu 16 13:13:24 zu-ovn-compute0 systemd[1]: Started OpenStack
networking-ovn Metadata Agent.
Agu 16 13:13:26 zu-ovn-compute0 sudo[18712]:     root : TTY=unknown ; PWD=/
; USER=root ; COMMAND=/bin/privsep-helper --config-file
/etc/neutron/plugins/networking-o...
Hint: Some lines were ellipsized, use -l to show in full.

Are this is a bug in centos upstream?

Best Regards,
Zufar Dhiyaulhaq


On Fri, Aug 16, 2019 at 9:31 PM Zufar Dhiyaulhaq <zufardhiyaulhaq at gmail.com>
wrote:

> Hi Lucas,
>
> Its always same, my OVSDB local instance is listening in
> unix:/var/run/openvswitch/db.sock
>
> [root at zu-ovn-compute0 ~]#  ps ax | grep ovn-controller
> 15398 ?        S<s    0:00 ovn-controller
> unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info
> --no-chdir --log-file=/var/log/openvswitch/ovn-controller.log
> --pidfile=/var/run/openvswitch/ovn-controller.pid --detach
> 15807 pts/0    S+     0:00 grep --color=auto ovn-controller
>
> [root at zu-ovn-compute0 ~]#  grep ovsdb_connection
> /etc/neutron/plugins/networking-ovn/networking-ovn-metadata-agent.ini
> ovsdb_connection = unix:/var/run/openvswitch/db.sock
>
> [root at zu-ovn-compute0 ~]# tail -f
> /var/log/neutron/networking-ovn-metadata-agent.log
> 2019-08-16 10:29:08.391 15647 CRITICAL neutron [-] Unhandled error:
> Exception: Could not connect to unix:/var/run/openvswitch/db.sock
> 2019-08-16 10:29:08.391 15647 ERROR neutron Traceback (most recent call
> last):
> 2019-08-16 10:29:08.391 15647 ERROR neutron   File
> "/usr/bin/networking-ovn-metadata-agent", line 10, in <module>
> 2019-08-16 10:29:08.391 15647 ERROR neutron     sys.exit(main())
> 2019-08-16 10:29:08.391 15647 ERROR neutron   File
> "/usr/lib/python2.7/site-packages/networking_ovn/cmd/eventlet/agents/metadata.py",
> line 17, in main
> 2019-08-16 10:29:08.391 15647 ERROR neutron     metadata_agent.main()
> 2019-08-16 10:29:08.391 15647 ERROR neutron   File
> "/usr/lib/python2.7/site-packages/networking_ovn/agent/metadata_agent.py",
> line 38, in main
> 2019-08-16 10:29:08.391 15647 ERROR neutron     agt.start()
> 2019-08-16 10:29:08.391 15647 ERROR neutron   File
> "/usr/lib/python2.7/site-packages/networking_ovn/agent/metadata/agent.py",
> line 139, in start
> 2019-08-16 10:29:08.391 15647 ERROR neutron     self.ovs_idl =
> ovsdb.MetadataAgentOvsIdl().start()
> 2019-08-16 10:29:08.391 15647 ERROR neutron   File
> "/usr/lib/python2.7/site-packages/networking_ovn/agent/metadata/ovsdb.py",
> line 59, in start
> 2019-08-16 10:29:08.391 15647 ERROR neutron     'Open_vSwitch')
> 2019-08-16 10:29:08.391 15647 ERROR neutron   File
> "/usr/lib/python2.7/site-packages/ovsdbapp/backend/ovs_idl/idlutils.py",
> line 120, in get_schema_helper
> 2019-08-16 10:29:08.391 15647 ERROR neutron     raise Exception("Could not
> connect to %s" % connection)
> 2019-08-16 10:29:08.391 15647 ERROR neutron Exception: Could not connect
> to unix:/var/run/openvswitch/db.sock
> 2019-08-16 10:29:08.391 15647 ERROR neutron
>
> [root at zu-ovn-compute0 ~]# systemctl status openvswitch
> ● openvswitch.service - Open vSwitch
>    Loaded: loaded (/usr/lib/systemd/system/openvswitch.service; enabled;
> vendor preset: disabled)
>    Active: active (exited) since Jum 2019-08-16 10:27:01 EDT; 4min 22s ago
>  Main PID: 15323 (code=exited, status=0/SUCCESS)
>     Tasks: 0
>    CGroup: /system.slice/openvswitch.service
>
> Agu 16 10:27:01 zu-ovn-compute0 systemd[1]: Starting Open vSwitch...
> Agu 16 10:27:01 zu-ovn-compute0 systemd[1]: Started Open vSwitch.
>
> [root at zu-ovn-compute0 ~]# systemctl status ovn-controller
> ● ovn-controller.service - OVN controller daemon
>    Loaded: loaded (/usr/lib/systemd/system/ovn-controller.service;
> enabled; vendor preset: disabled)
>    Active: active (running) since Jum 2019-08-16 10:27:12 EDT; 4min 22s ago
>  Main PID: 15398 (ovn-controller)
>     Tasks: 1
>    CGroup: /system.slice/ovn-controller.service
>            └─15398 ovn-controller unix:/var/run/openvswitch/db.sock
> -vconsole:emer -vsyslog:err -vfile:info --no-chdir
> --log-file=/var/log/openvswitch/ovn-controller...
>
> Agu 16 10:27:12 zu-ovn-compute0 systemd[1]: Starting OVN controller
> daemon...
> Agu 16 10:27:12 zu-ovn-compute0 ovn-ctl[15386]: Starting ovn-controller [
>  OK  ]
> Agu 16 10:27:12 zu-ovn-compute0 systemd[1]: Started OVN controller daemon.
>
> Best Regards,
> Zufar Dhiyaulhaq
>
>
> On Fri, Aug 16, 2019 at 9:21 PM Lucas Alvares Gomes <lucasagomes at gmail.com>
> wrote:
>
>> Hi Zufar,
>>
>> The ovn-metadata-agent is trying to connection with the local OVSDB
>> instance via UNIX socket. The same socket used by the "ovn-controller"
>> process running on your compute nodes. For example:
>>
>> $ ps ax | grep ovn-controller
>>  1640 ?        S<sl   0:04 ovn-controller
>> unix:/usr/local/var/run/openvswitch/db.sock -vconsole:emer
>> -vsyslog:err -vfile:info --no-chdir
>> --log-file=/opt/stack/logs/ovn-controller.log
>> --pidfile=/usr/local/var/run/openvswitch/ovn-controller.pid --detach
>>
>> Can you see the "unix:/usr/local/var/run/openvswitch/db.sock" ? That's
>> the UNIX socket path that needs to be passed to the ovn-metadata-agent
>> via configuration option.
>>
>> You can find that configuration option at:
>>
>> $ grep ovsdb_connection /etc/neutron/networking_ovn_metadata_agent.ini
>> ovsdb_connection = unix:/usr/local/var/run/openvswitch/db.sock
>>
>> Hope that helps,
>> Lucas
>>
>> On Fri, Aug 16, 2019 at 5:53 AM Zufar Dhiyaulhaq
>> <zufardhiyaulhaq at gmail.com> wrote:
>> >
>> > Hi,
>> >
>> > I have set up OpenStack with OVN enabled (manual install) and I can
>> create Instance, associate floating IP and test the ping.
>> >
>> > But my Instance not getting metadata from OpenStack. I check the
>> reference architecture,
>> https://docs.openstack.org/networking-ovn/queens/admin/refarch/refarch.html
>> the compute nodes should have installed ovn-metadata-agent but I don't find
>> any configuration document about ovn-metadata-agent.
>> >
>> > I have configured the configuration files like this:
>> >
>> > [DEFAULT]
>> > nova_metadata_ip = 10.100.100.10
>> > [ovs]
>> > ovsdb_connection = unix:/var/run/openvswitch/db.sock
>> > [ovn]
>> > ovn_sb_connection = tcp:10.101.101.10:6642
>> >
>> > But the agent always fails. Full logs:
>> http://paste.openstack.org/show/757805/
>> >
>> > Anyone know whats happen and how to fix this error?
>> >
>> > Best Regards,
>> > Zufar Dhiyaulhaq
>>
>
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