Thanks very much for your replies to my issue, folks. I’ve decide to remove OVS from the system and return to Linux bridging. OVS is the only thing that didn’t survive the upgrade to Ubuntu 16.04 and it may take some time to debug the problem, especially with no support from Ubuntu. I don’t have that time to spare.
Again, I’m much obliged for your responses. Regards, Chad Willman From: Chad Willman <[email protected]> Date: Thursday, August 24, 2017 at 7:20 AM To: "O'Reilly, Darragh" <[email protected]>, Ben Warren <[email protected]> Cc: "[email protected]" <[email protected]> Subject: Re: [ovs-discuss] problem with openvswitch 2.5.2 after upgrade to Ubuntu 16.04 Couple of notes. I disabled NetworkManager service. It got rid of the NetworkManager kern.log, but the “device ovsbr0 entered/left promiscuous mode” is still there. Regarding creating the bridge using ovs-vsctl vs brctl, I completely removed the ovsbr0 bridge, removed the openvswitch 2.5.2 packages, and verified that “brctl show” displayed nothing. Then I reinstalled the openvswitch 2.5.2 packages and recreated the ovsbr0 bridge using ovs-vsctl. The “brctl show” command still displays the ovsbr0 bridge, even though it was created with the ovs-vsctl command (re: Ben’s comment earlier in the thread). Still getting “2017-08-24T12:11:39.089Z|385668|bridge|INFO|bridge ovsbr0: added interface ovsbr0 on port 65534” in the ovs-vswitchd log as well. But disabling the NetworkManager service was a clue. The Ubuntu system I’m trying to fix is a hybrid of sorts. It was installed with Ubuntu Server 14.04, but was later modified to enable graphical access through VNC (hence, NetworkManager being active). It’s possible there are other elements at work, that are related to that hybrid configuration. The interesting part is that the system has been operating fine with 14.04 for 3 years. It wasn’t until the upgrade to Ubuntu 16.04 that the issue began. That upgrade took openvswitch from 2.0.2 to 2.5.2 (Ubuntu’s package versions). Thanks for the responses. CW From: "O'Reilly, Darragh" <[email protected]> Date: Thursday, August 24, 2017 at 2:54 AM To: Chad Willman <[email protected]>, Ben Warren <[email protected]> Cc: "[email protected]" <[email protected]> Subject: RE: [ovs-discuss] problem with openvswitch 2.5.2 after upgrade to Ubuntu 16.04 Maybe a NetworkManager problem. I would disable it completely on a server, but maybe you could change it to ignore OVS interfaces. From: [email protected] [mailto:[email protected]] On Behalf Of Chad Willman Sent: 23 August 2017 18:20 To: Ben Warren <[email protected]> Cc: [email protected] Subject: Re: [ovs-discuss] problem with openvswitch 2.5.2 after upgrade to Ubuntu 16.04 Hi, I eliminated the lxcbr0, but still have the same problem with ovs-vswitchd eating CPU. cwillman@harley:~$ sudo brctl show bridge name bridge id STP enabled interfaces ovsbr0 8000.c6074be69e43 no em1 vnet0 vnet1 vnet2 kern.log is also flooding with this message - Aug 23 07:36:03 harley NetworkManager[2481]: <info> [1503491763.8976] device (ovsbr0): enslaved to non-master-type device ovs-system; ignoring Aug 23 07:36:03 harley kernel: [58455.254778] device ovsbr0 entered promiscuous mode Aug 23 07:36:03 harley kernel: [58455.257975] device ovsbr0 left promiscuous mode Would appreciate any other suggestions. Regards, Chad From: Chad W <[email protected]<mailto:[email protected]>> Date: Wednesday, August 23, 2017 at 11:55 AM To: Ben Warren <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [ovs-discuss] problem with openvswitch 2.5.2 after upgrade to Ubuntu 16.04 Hi Ben and thanks for the response. brctl shows me this - bridge namebridge id STP enabledinterfaces lxcbr08000.00163e000000 no ovsbr08000.c6074be69e43 no em1 vnet0 vnet1 vnet2 The ovsbr0 bridge looks right, but the lxcbr0 should not be there. Not sure how it got there (we have multiple admins on this system), but I’ll try nuking it. Regards, Chad From: Ben Warren <[email protected]<mailto:[email protected]>> Date: Wednesday, August 23, 2017 at 11:43 AM To: Chad W <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [ovs-discuss] problem with openvswitch 2.5.2 after upgrade to Ubuntu 16.04 Hi Chad, I’ve seen this if regular Linux bridging is enabled. The command ‘brctl show’ will display non-OVS bridges. regards, Ben On Aug 23, 2017, at 9:23 AM, Chad Willman <[email protected]<mailto:[email protected]>> wrote: Is there a forum specific to discing issues encountered ? My ovs-vswitchd daemon is consuming 400% CPU and flooding ovs-vswitchd.log with the same message repeatedly - 2017-08-23T16:18:28.049Z|641473|bridge|INFO|bridge ovsbr0: added interface ovsbr0 on port 65534 Looking for help or ideas for debugging the issue. 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