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Chapter 4. Configuring the Overcloud after Creation
The creation process results in a fully operational Overcloud with IPv6 network. However, the Overcloud requires some post-creation configuration.
4.1. Creating the Overcloud Tenant Network
The Overcloud requires a IPv6-based Tenant network for instances. Source the overcloudrc file and create an initial Tenant network in neutron. For example:
$ source ~/overcloudrc $ neutron net-create default --provider:physical_network datacentre --provider:network_type vlan --provider:segmentation_id 101 $ neutron subnet-create default 2001:db8:fd00:6000::/64 --ipv6-ra-mode slaac --ipv6-address-mode slaac --ip-version 6 --name default
This creates a basic neutron network called default. Confirm the created network with neutron net-list:
$ neutron net-list
4.2. Creating the Overcloud Public Network
This scenario configured the node interfaces to use the External network. However, you still need to create this network on the Overcloud so that we can provide network access.
$ neutron net-create public --router:external --provider:physical_network datacentre --provider:network_type vlan --provider:segmentation_id 100 $ neutron subnet-create public 2001:db8:0:2::/64 --ip-version 6 --gateway 2001:db8::1 --allocation-pool start=2001:db8:0:2::2,end=2001:db8:0:2::ffff --ip-version 6 --ipv6_address_mode=slaac --ipv6_ra_mode=slaac
This creates a network called public provides an allocation pool of over 65000 IPv6 addresses for our instances.
Create a router to route instance traffic to the External network.
neutron router-create public-router neutron router-gateway-set public-router public
