Need some clarification about tenant network in TripleO

wodel youchi wodel.youchi at
Wed Sep 15 12:07:39 UTC 2021

Thank you for this explanation.

To the problem now, I installed Train, then I created a new tenant with its
private network, then I created another tenant with its own private
network. But I used the same subnet for both networks, then I spawned 4
VMs, 2 per tenant, they got their IP addresses, and the problem is, they
all can ping each other, there is no isolation between the tenants.

I don't know where to begin searching.


Le mer. 15 sept. 2021 à 12:16, John Fulton <johfulto at> a écrit :

> On Wed, Sep 15, 2021 at 6:07 AM wodel youchi <wodel.youchi at>
> wrote:
> >
> > Hi,
> >
> > It is a newbie question, but I didn't find a real answer, and I have
> trouble with my deployment, so some help will be appreciated.
> >
> > In the deployment of TripleO in network isolation, a Tenant network is
> created, that network (in the examples I have seen) have a VLAN-ID and a
> subnet.
> > I did the same in my deployment, I created that network.
> >
> > My questions :
> > - Is the Tenant network, mentioned in the deployment process, is it the
> first tenant network created for the admin tenant? and for new tenant I
> have to create a new network tenant, despite I am not seeing how I would do
> that?
> > - Or is it a pipe (a conduit) used to pass the traffic of all the
> tenants that will be created after?
> Convention is for it to be a pipe, i.e. the second option. Usually the
> tenant network will be its own VLAN and then an overlay network (e.g.
> Geneve, VXLAN, etc) will create tenant networks on top of that VLAN
> when each tenant requests with a command like `openstack network
> create my_private_network`. On a default TripleO install you should be
> able to source the overcloudrc and then run that command to create
> these overlay networks.
>   John
> >
> >
> > Regards.
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