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Chapter 3. Creating the Overcloud
The creation of an Overcloud that uses IPv6 networking requires additional arguments for the openstack overcloud deploy command. For example:
The above command uses the following options:
-
--templates- Creates the Overcloud from the default Heat template collection. -
-e /usr/share/openstack-tripleo-heat-templates/environments/network-isolation.yaml- Adds an additional environment file to the Overcloud deployment. In this case, it is an environment file that initializes network isolation configuration for IPv6. -
-e /usr/share/openstack-tripleo-heat-templates/environments/net-single-nic-with-vlans.yaml- Adds an additional environment file to the Overcloud deployment. In this case, it is an environment file that initializes network isolation configuration for IPv6. -e /home/stack/network-environment.yaml- Adds an additional environment file to the Overcloud deployment. In this case, it includes overrides related to IPv6.Ensure that network_data.yaml includes the setting
ipv6: true. Previous versions of Red Hat OpenStack director, included two routes: one for IPv6 on the External network (default) and one for IPv4 on the Control Plane. To use both default routes, ensure that the controller definition in roles_data.yaml contains both networks in default_route_networks (for example,default_route_networks: ['External', 'ControlPlane']).-
--ntp-server pool.ntp.org- Sets our NTP server.
The Overcloud creation process begins and the director provisions your nodes. This process takes some time to complete. To view the status of the Overcloud creation, open a separate terminal as the stack user and run:
source ~/stackrc heat stack-list --show-nested
$ source ~/stackrc
$ heat stack-list --show-nested3.1. Accessing the Overcloud
The director generates a script to configure and help authenticate interactions with your Overcloud from the director host. The director saves this file (overcloudrc) in your stack user’s home directory. Run the following command to use this file:
source ~/overcloudrc
$ source ~/overcloudrcThis loads the necessary environment variables to interact with your Overcloud from the director host’s CLI. To return to interacting with the director’s host, run the following command:
source ~/stackrc
$ source ~/stackrc
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