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Hybrid Cloud for Developers
book

Hybrid Cloud for Developers

by Manoj Hirway
April 2018
Intermediate to advanced content levelIntermediate to advanced
280 pages
8h 37m
English
Packt Publishing
Content preview from Hybrid Cloud for Developers

VM cannot reach the external network

Another common issue with virtual machines running on OpenStack is that they can connect to other VMs inside the same virtual network, but are unable to reach the external network. In order to troubleshoot such problems, let's first understand how the packet reaches the external network when the network is correctly configured:

  1. The VM sends a packet destined for the external network.
  2. The packet reaches the firewall bridge, which has iptable configuration. The iptables rules must allow the packet to reach the integration bridge.
  1. The integration bridge will tag the packet with the local VLAN ID and forward it to the tunnel bridge.
  2. The tunnel bridge will translate the VLAN id into segmentation ID and the ...
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Publisher Resources

ISBN: 9781788830874Supplemental Content