instance cannot get internet connection from guest OS

asked 2019-07-15 22:52:02 -0600

Tebe gravatar image

updated 2019-07-16 23:10:04 -0600

Vinoth gravatar image

Hi mates i just get assigment from my boss to learn about openstack all of installment already no issue but this is the last issue i faced that i cannot get internet connection from my Instance/VM from the guest OS Please be remember that i am so newbie on this technology (image description)

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How did you set up your cloud? Devstack or Packstack, probably?

Your "public" network has an IP address range of These are non-routable addresses: The network is not connected to the internet. Both Devstack and Packstack create such a fake "external" network for testing purposes.

Bernd Bausch gravatar imageBernd Bausch ( 2019-07-16 01:53:41 -0600 )edit

You can connect your cloud to the outside network; both the Packstack and Devstack documentation pages contain instructions for that. By default, however, your cloud is isolated.

Bernd Bausch gravatar imageBernd Bausch ( 2019-07-16 01:54:32 -0600 )edit

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answered 2019-07-16 23:08:34 -0600

Vinoth gravatar image

Welcome, Tebe :-)

Here are the tips that could help in the troubleshooting front,

  • Check all the bridge mappings are established. Especially, bridge mapping with physical NIC.
  • Look for ERROR logs on /var/log/neutron/ folder. The Error logs could help you to understand the issue better.
  • Use "tcpdump" command to dig more on traffic flow on both bridge and NIC end.

Happy troubleshooting :-)

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Asked: 2019-07-15 22:52:02 -0600

Seen: 92 times

Last updated: Jul 16 '19