[ovs-discuss] OVS bridge on boot in Debian

Ben Pfaff blp at ovn.org
Fri Oct 13 15:48:28 UTC 2017


Usually "ovs-vsctl set-controller" is the best way to configure a set of
controllers.

But maybe you are asking about how to configure a set of controllers
from /etc/network/interfaces.  If so, Guru may have advice (and maybe we
should document it).

On Thu, Oct 12, 2017 at 11:54:54PM +0000, Omar Ramadan wrote:
> A related question: What is the best way to configure a set of controllers? Can I specify a set of controllers for my bridge to use in a similar fashion in networking?
> 
> ________________________________
> From: ovs-discuss-bounces at openvswitch.org <ovs-discuss-bounces at openvswitch.org> on behalf of Omar Ramadan <oramadan at fb.com>
> Sent: Thursday, October 12, 2017 4:47:10 PM
> To: Guru Shetty
> Cc: ovs-discuss at openvswitch.org
> Subject: [Potential Spoof] Re: [ovs-discuss] OVS bridge on boot in Debian
> 
> 
> Looks like I was missing the kernel module. Added "openvswitch-datapath-dkms" and it works now.
> 
> 
> Thanks!
> 
> ________________________________
> From: ovs-discuss-bounces at openvswitch.org <ovs-discuss-bounces at openvswitch.org> on behalf of Omar Ramadan <oramadan at fb.com>
> Sent: Thursday, October 12, 2017 4:31:24 PM
> To: Guru Shetty
> Cc: ovs-discuss at openvswitch.org
> Subject: [Potential Spoof] Re: [ovs-discuss] OVS bridge on boot in Debian
> 
> 
> Hi Guru, Ben,
> 
> 
> Thanks for the responses. I originally did a "make install" though I realized there may be some packaging postinst scripts that may need to be run for it to work. I built and installed openvswitch-common and openvswitch-switch.
> 
> 
> "ifup --allow=ovs br0" still fails to find br0 but I've made progress nonetheless in the networking journal
> 
> vagrant at magma-dev:/etc/network$ sudo journalctl -u networking
> Oct 12 23:27:29 magma-dev ovs-vsctl[2127]: ovs|00001|vsctl|INFO|Called as ovs-vsctl --timeout=5 -- --may-exist add-port br0 eth0 --
> Oct 12 23:27:29 magma-dev networking[1875]: ovs-vsctl: Error detected while setting up 'eth0'.  See ovs-vswitchd log for details.
> Oct 12 23:27:29 magma-dev networking[1875]: ovs-vsctl: The default log directory is "/var/log/openvswitch".
> Oct 12 23:27:29 magma-dev ovs-vsctl[2202]: ovs|00001|vsctl|INFO|Called as ovs-vsctl --timeout=5 -- --may-exist add-port br0 eth0 --
> 
> vagrant at magma-dev:/var/log/openvswitch$ sudo less ovs-vswitchd.log
> 2017-10-12T23:27:31.123Z|00112|ofproto|ERR|failed to open datapath br0: No such file or directory
> 2017-10-12T23:27:31.123Z|00113|bridge|ERR|failed to create bridge br0: No such file or directory
> 
> What could be missing?
> 
> Best,
> Omar
> 
> 
> ________________________________
> From: Guru Shetty <guru at ovn.org>
> Sent: Thursday, October 12, 2017 10:50:38 AM
> To: Omar Ramadan
> Cc: ovs-discuss at openvswitch.org
> Subject: Re: [ovs-discuss] OVS bridge on boot in Debian
> 
> 
> 
> On 12 October 2017 at 10:29, Omar Ramadan <oramadan at fb.com<mailto:oramadan at fb.com>> wrote:
> 
> Hi list,
> 
> 
> I am using OVS 2.7.90 with Debian 8.7 and want to configure the switch to be loaded on system initialization. I have installed the service "openvswitch-switch" and added the following in /etc/network/interfaces
> 
> How did you install OVS 2.7.90? By 'make install' or via debian packages?
> 
> 
> 
> allow-ovs br0
> 
> iface br0 inet dhcp
> 
>     ovs_type OVSBridge
> 
>     ovs_ports eth0
> 
> 
> allow-br0 eth0
> 
> iface eth0 inet manual
> 
>     ovs_bridge br0
> 
>     ovs_type OVSPort
> 
> I am still unable to load br0 with ifup.
> 
> 
> vagrant at magma-dev:/etc/network/interfaces.d$ sudo ifup br0
> Lets try with:
> ifup --allow=ovs br0
> 
> 
> 
> Cannot find device "br0"
> 
> Bind socket to interface: No such device
> 
> 
> exiting.
> 
> Failed to bring up br0.
> 
> How do these interfaces get set up? Is there anyway to debug this? I've built this package from source, so I want to make sure I am not missing dependencies. Also should I be adding any additional systemctl units or should adding "openvswitch-switch" be enough?
> 
> Best,
> Omar
> 
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