[neutron] openvswitch switch connection timeout?

Lars Kellogg-Stedman lars at redhat.com
Thu Feb 21 21:20:42 UTC 2019


I'm seeing identical behavior on a second system.  Has anyone else
experienced this?

On Wed, Feb 20, 2019 at 10:58 PM Lars Kellogg-Stedman <lars at redhat.com>
wrote:

> On Wed, Feb 20, 2019 at 10:13 PM Lars Kellogg-Stedman <lars at redhat.com>
> wrote:
>
>> 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
>>
>
> The plot thickens: it looks as if something may be doing this explicitly?
> At the same time, we see in the system journal:
>
> Thu 2019-02-21 00:32:38.697531 UTC
> [s=fa1c368ed0314169b286a29ffe7d9f87;i=4aa2b;b=d64947ee218546d8a94103aa9bbee154;m=4b31e6780;t=5825c9c8dda3b;x=13507b4516ddcb27]
>     _TRANSPORT=stdout
>     PRIORITY=6
>     SYSLOG_FACILITY=3
>     _UID=0
>     _GID=0
>     _CAP_EFFECTIVE=1fffffffff
>     _SELINUX_CONTEXT=system_u:system_r:init_t:s0
>     _BOOT_ID=d64947ee218546d8a94103aa9bbee154
>     _MACHINE_ID=4a470fefdd3b4033a163bb69bc8578da
>     _HOSTNAME=localhost.localdomain
>     _SYSTEMD_SLICE=system.slice
>     _EXE=/usr/bin/bash
>     _STREAM_ID=951219afe7fb4eb4bf5d71af983d1f11
>     SYSLOG_IDENTIFIER=ovs-ctl
>     MESSAGE=Exiting ovs-vswitchd (9340) [  OK  ]
>     _PID=868225
>     _COMM=ovs-ctl
>     _CMDLINE=/bin/sh /usr/share/openvswitch/scripts/ovs-ctl
> --no-ovsdb-server stop
>     _SYSTEMD_CGROUP=/system.slice/ovs-vswitchd.service/control
>     _SYSTEMD_UNIT=ovs-vswitchd.service
>
> ...but there's nothing else around that time that seems relevant.
>
> --
> Lars Kellogg-Stedman <lars at redhat.com>
>
>

-- 
Lars Kellogg-Stedman <lars at redhat.com>
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