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I was trying to track down some connectivity issues with some
baremetal nodes booting from iSCSI LUNs provided by Cinder.  It turns
out that openvswitch is going belly-up.  We see in
openvswitch-agent.log a "Switch connection timeout" error [1].  Just
before that, in /var/log/openvswitch/ovs-vswitchd.log, we see:

	2019-02-21T00:32:38.696Z|00795|bridge|INFO|bridge br-tun: deleted interface patch-int on port 1
	2019-02-21T00:32:38.696Z|00796|bridge|INFO|bridge br-tun: deleted interface br-tun on port 65534
	2019-02-21T00:32:38.823Z|00797|bridge|INFO|bridge br-int: deleted interface int-br-ctlplane on port 1
	2019-02-21T00:32:38.823Z|00798|bridge|INFO|bridge br-int: deleted interface br-int on port 65534
	2019-02-21T00:32:38.823Z|00799|bridge|INFO|bridge br-int: deleted interface tapb0101920-b9 on port 4
	2019-02-21T00:32:38.824Z|00800|bridge|INFO|bridge br-int: deleted interface patch-tun on port 3
	2019-02-21T00:32:38.954Z|00801|bridge|INFO|bridge br-ctlplane: deleted interface phy-br-ctlplane on port 4
	2019-02-21T00:32:38.954Z|00802|bridge|INFO|bridge br-ctlplane: deleted interface br-ctlplane on port 65534
	2019-02-21T00:32:38.954Z|00803|bridge|INFO|bridge br-ctlplane: deleted interface em2 on port 3

At this point, while the output from 'ovs-vsctl' looks fine, other tools like
ovs-ofctl report:

  ovs-ofctl: br-int is not a bridge or a socket                                                                                                                                                 

Has anyone seen this before?

[1] https://termbin.com/ipil

-- 
Lars Kellogg-Stedman <lars at redhat.com> | larsks @ {irc,twitter,github}
http://blog.oddbit.com/                |