failed to run "ovs-appctl or ovs-dpctl" command in openvswitch container

Need to select the target for appctl commands:

[root@compute1 ~]# docker exec openvswitch_vswitchd ls /var/run/openvswitch/
db.sock
ovs-vswitchd.5.ctl
ovsdb-server.12.ctl
ovsdb-server.14.ctl
[root@compute1 ~]# docker exec openvswitch_vswitchd ovs-appctl -t /var/run/openvswitch/ovsdb-server.14.ctl memory/show
cells:16 json-caches:1 monitors:1 sessions:1

dpctl commands works fine without target.

[root@compute1 ~]# docker exec openvswitch_vswitchd ovs-dpctl show
system@ovs-system:
 lookups: hit:133 missed:72 lost:0
 flows: 0
 masks: hit:315 total:1 hit/pkt:1.54
 port 0: ovs-system (internal)
 port 1: br-int (internal)
 port 2: br-tun (internal)

To avoid having to use targets, can add into ovs containers startup commands:
--pidfile=/var/run/openvswitch/ovs-vswitchd.pid

This works, however i'm not sure about if this can cause issues. Will need to investigate more.

thanks, it works well after add "--pidfile=/var/run/openvswitch/ovs-vswitchd.pid" .

if we create a pid file we may need to have the same pid namespace between
nova-compute(for os-vif to do pluging)
neutron-openvsiwtch-agent
neutron-l3-agent
neutron-dhcp-agent
openvswitch_vswitchd
openvswitch_db

otherwise the pid file will only work in the
openvswitch_vswitchd

also if you are in the openvswitch_vswitchd container
this ovs-vsctl,ovs-ofctl and ovs-dpctl should already work without
the target or pid file being specifed so its only ovs-appctl that is not working.

Fix proposed to branch: master
Review: https://review.opendev.org/668630

Reviewed: https://review.opendev.org/668630
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=0ec7017f7a358553158dc927285ab9f4af1a641a
Submitter: Zuul
Branch: master

commit 0ec7017f7a358553158dc927285ab9f4af1a641a
Author: Michal Nasiadka <email address hidden>
Date: Tue Jul 2 10:11:02 2019 +0200

    Fix ovs-appctl by adding --pidfile to ovsdb command.

    Change-Id: I8927ce98d669480866d6fcddaf7b08ef3cbbc37e
    Closes-Bug: #1697570

Fix proposed to branch: stable/stein
Review: https://review.opendev.org/677385

Fix proposed to branch: stable/rocky
Review: https://review.opendev.org/677386

Fix proposed to branch: stable/queens
Review: https://review.opendev.org/677387

Reviewed: https://review.opendev.org/677385
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=0e78cbb84c895eb14d8d6e63989d6cfc88474b98
Submitter: Zuul
Branch: stable/stein

commit 0e78cbb84c895eb14d8d6e63989d6cfc88474b98
Author: Michal Nasiadka <email address hidden>
Date: Tue Jul 2 10:11:02 2019 +0200

    Fix ovs-appctl by adding --pidfile to ovsdb command.

    Change-Id: I8927ce98d669480866d6fcddaf7b08ef3cbbc37e
    Closes-Bug: #1697570
    (cherry picked from commit 0ec7017f7a358553158dc927285ab9f4af1a641a)

Reviewed: https://review.opendev.org/677386
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=fc806d33a8601059455790527782989dbb2f56e9
Submitter: Zuul
Branch: stable/rocky

commit fc806d33a8601059455790527782989dbb2f56e9
Author: Michal Nasiadka <email address hidden>
Date: Tue Jul 2 10:11:02 2019 +0200

    Fix ovs-appctl by adding --pidfile to ovsdb command.

    Change-Id: I8927ce98d669480866d6fcddaf7b08ef3cbbc37e
    Closes-Bug: #1697570
    (cherry picked from commit 0ec7017f7a358553158dc927285ab9f4af1a641a)

Reviewed: https://review.opendev.org/677387
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=13ad3974560dfb9cc89b0f966a61f7a592efee30
Submitter: Zuul
Branch: stable/queens

commit 13ad3974560dfb9cc89b0f966a61f7a592efee30
Author: Michal Nasiadka <email address hidden>
Date: Tue Jul 2 10:11:02 2019 +0200

    Fix ovs-appctl by adding --pidfile to ovsdb command.

    Change-Id: I8927ce98d669480866d6fcddaf7b08ef3cbbc37e
    Closes-Bug: #1697570
    (cherry picked from commit 0ec7017f7a358553158dc927285ab9f4af1a641a)

Thank you, the workaround with specification of pidfile works fine:

docker exec -it openvswitch_vswitchd ovs-appctl \
  -t /var/run/openvswitch/ovs-vswitchd.*.ctl fdb/show br-int

This issue was fixed in the openstack/kolla 6.2.3 release.

This issue was fixed in the openstack/kolla 7.0.4 release.

This issue was fixed in the openstack/kolla 8.0.1 release.

This issue was fixed in the openstack/kolla 9.0.0.0rc1 release candidate.