Open Stack

Hi guys, sorry for the late reply. I noticed that the gateway I gave was
not pingable and I will try it tomorrow and let you all know if it works
out. Before I posted this discussion, I did a fresh installation of
openstack. I have only modified the external network in init-runonce
script. Will that cause a problem? I have attached an image of the
modification I made before running the script as shown below. Other than
that I have not made any changes to the configuration. Besides, I have not
make any changes to the security-group rules regardless of the internet
access.
[image: image.png]

Best regards,
Vincent

On Tue, Nov 22, 2022 at 3:58 AM Eugen Block <eblock at nde.ag> wrote:

> Just one more thing to check, did you edit the security-group rules to
> allow access to the outside world?
>
> Zitat von Adivya Singh <adivya1.singh at gmail.com>:
>
> > it should be missing a default route most of the time.
> > or check IP tables on router namespace the DNAT and SNAT are working
> > properly
> >
> >
> >
> > On Tue, Nov 22, 2022 at 9:40 AM Tobias McNulty <tobias at caktusgroup.com>
> > wrote:
> >
> >> On Mon, Nov 21, 2022 at 7:39 PM vincent lee <vincentlee676 at gmail.com>
> >> wrote:
> >>
> >>> After reviewing the post you shared, I believe that we have the correct
> >>> subnet. Besides, we did not modify anything related to the cloud-init
> for
> >>> openstack.
> >>>
> >>
> >> I didn't either. But I found it's a good test of the network! If you are
> >> using an image that doesn't rely on it you might not notice (but I
> >> would not recommend that).
> >>
> >>
> >>> After launching the instances, we are able to ping between the
> instances
> >>> of the same subnet. However, we are not able to receive any internet
> >>> connection within those instances. From the instance, we are able to
> ping
> >>> the router IP addresses 10.42.0.56 and 10.0.0.1.
> >>>
> >>
> >> To make sure I understand:
> >> - 10.42.0.56 is the IP of the router external to OpenStack that provides
> >> internet access
> >> - This router is tested and working for devices outside of OpenStack
> >> - OpenStack compute instances can ping this router
> >> - OpenStack compute instances cannot reach the internet
> >>
> >> If that is correct, it does not sound like an OpenStack issue
> necessarily,
> >> but perhaps a missing default route on your compute instances. I would
> >> check that DHCP is enabled on the internal subnet and that it's
> providing
> >> everything necessary for an internet connection to the instances.
> >>
> >> Tobias
> >>
> >>
> >>
>
>
>
>
>

-- 
thanks you.
vincentleezihong
2garnet
form2
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