Open Stack

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
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