[ovs-discuss] How to run ovs-vswitchd as non-root

[Aishwarya]

Hi Ben,

It seems like vsctl is also creating a local interface called br0. I
confirmed this by doing an ifconfig br0 before this command and after.
Before the vsctl add-br br0 command, ifconfig br0 says "no device found",
but after the command it allows me to assign an ipaddress to br0, and does
not give the error anymore.

Also, as you said, not running vswitchd as root is what was causing issues
when vsctl was trying to create a bridge. the br0.msgmt and snoop files were
not getting created.

Thanks,
Aish

On Thu, Sep 22, 2011 at 7:35 PM, Ben Pfaff <blp at nicira.com> wrote:

> ovs-vsctl only changes the database.  The database update completes
> successfully.
>
> On Thu, Sep 22, 2011 at 06:15:46PM -0700, Aishwarya wrote:
> > Ok.. Apart from this, I also notice if I use ovs-vsctl add br0 without
> sudo,
> > it does not give me any error immediately, but when I try to set an ip
> > address for the br0 interface with sudo ifconfig, it says "no such device
> > exists". Is this because when run without sudo, vsctl add-br is not doing
> > this correctly? It may be helpful to see an error message in such a case.
> >
> > Thanks,
> > AIsh
> >
> >
> > On Thu, Sep 22, 2011 at 4:18 PM, Ben Pfaff <blp at nicira.com> wrote:
> >
> > > Yes.
> > >
> > > Only root is allowed to change the kernel flow tables, for example.
> > >
> > > On Thu, Sep 22, 2011 at 04:00:34PM -0700, Aishwarya wrote:
> > > > Hi Ben,
> > > >
> > > > Using OVS_RUNDIR works for me. But are you saying running vswitchd as
> non
> > > > root will cause other issues in the functionality?
> > > >
> > > > Thanks,
> > > > Aish
> > > >
> > > > On Thu, Sep 22, 2011 at 3:27 PM, Ben Pfaff <blp at nicira.com> wrote:
> > > >
> > > > > On Thu, Sep 22, 2011 at 03:05:57PM -0700, Aishwarya wrote:
> > > > > > ovsdb-server gives an option to specify the ctl socket path with
> > > > > --unixctl
> > > > > > option. So, this and specifying the pid file path make it
> possible to
> > > run
> > > > > > this from a non-root account or without sudo. Is there a way that
> > > > > > ovs-vswiitchd can also be run without sudo? Right now, I get this
> > > error:
> > > > > > ovs-vswitchd: could not initialize control socket
> > > > > > /usr/local/var/run/openvswitch/ovs-vswitchd.20342.ctl (Permission
> > > > > denied).
> > > > >
> > > > > You can specify the OVS_RUNDIR environment variable.
> > > > >
> > > > > There are other reasons that ovs-vswitchd normally requires root,
> so
> > > > > it might not help.
> > > > >
> > >
>
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