[ovirt-users] OVN and change of mgmt network

[Marcin Mirecki]

Hello Gianluca,

Please check on the engine what hosts are registered on ovn-north:
#ovn-sbctl show

For each registered host you should see something like:
   Chassis "69b6b2a6-5afb-4908-8d66-c648cbe09ba8"
       hostname: "f43"
       Encap geneve
           ip: "192.168.120.43"
           ....

I would assume you have some unwanted entries there (10.4.168.74)

To get rid of this please use:
# ovn-sbctl chassis-del <chassis id>    // for example: ovn-sbctl
chassis-del 69b6b2a6-5afb-4908-8d66-c648cbe09ba8

Please let me know if this helps.

Note also that you would have to runplug/plug any vnics on any vm's you
have on those two hosts.

Marcin



On Tue, Oct 3, 2017 at 3:41 PM, Gianluca Cecchi <gianluca.cecchi at gmail.com>
wrote:

> Hello,
> I previously had OVN running on engine (as OVN provider with northd and
> northbound and southbound DBs) and hosts (with OVN controller).
>
> After changing mgmt ip of hosts (engine has retained instead the same ip),
> I executed again on them the command:
>
> vdsm-tool ovn-config <ip_of_engine> <nel_local_ip_of_host>
>
> Now I think I have to clean up some things, eg:
>
> 1) On engine
> where I get these lines below
>
> systemctl status ovn-northd.service -l
> . . .
> Sep 29 14:41:42 ovmgr1 ovsdb-server[940]: ovs|00005|reconnect|ERR|tcp:10
> .4.167.40:37272: no response to inactivity probe after 5 seconds,
> disconnecting
> Oct 03 11:52:00 ovmgr1 ovsdb-server[940]: ovs|00006|reconnect|ERR|tcp:10
> .4.167.41:52078: no response to inactivity probe after 5 seconds,
> disconnecting
>
> The two IPs are the old ones of two hosts
> It seems that a restart of the services has fixed...
> Can anyone confirm if I have to do anything else?
>
> 2) On hosts (there are 3 hosts with OVN on ip 10.4.192.32/33/34)
> where I currently have this output
>
> [root at ov301 ~]# ovs-vsctl show
> 3a38c5bb-0abf-493d-a2e6-345af8aedfe3
>     Bridge br-int
>         fail_mode: secure
>         Port "ovn-1dce5b-0"
>             Interface "ovn-1dce5b-0"
>                 type: geneve
>                 options: {csum="true", key=flow, remote_ip="10.4.192.32"}
>         Port "ovn-ddecf0-0"
>             Interface "ovn-ddecf0-0"
>                 type: geneve
>                 options: {csum="true", key=flow, remote_ip="10.4.192.33"}
>         Port "ovn-fd413b-0"
>             Interface "ovn-fd413b-0"
>                 type: geneve
>                 options: {csum="true", key=flow, remote_ip="10.4.168.74"}
>         Port br-int
>             Interface br-int
>                 type: internal
>     ovs_version: "2.7.2"
> [root at ov301 ~]#
>
> The IPs of kind 10.4.192.x are ok.
> But there is a left-over of an old host I initially used for tests,
> corresponding to 10.4.168.74, that now doesn't exist anymore
>
> How can I clean records for 1) and 2)?
>
> Thanks,
> Gianluca
>
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