- OpenStack Networking Cookbook
- Sriram Subramanian Chandan Dutta Chowdhury
- 269字
- 2021-07-09 21:40:41
Creating a Subnet using OpenStack CLI
Similar to the CLI commands to create a Network, the next recipe will explore the CLI command to create a Subnet. The key aspect of the CLI commands for Subnet creation is that a Network Name is a mandatory attribute.
Getting ready
You will need the following information to get started:
- The login credentials for SSH to a node where the Neutron client packages are installed
- A shell RC file that initializes the environment variables for CLI
How to do it…
The next set of steps will show you how to use Neutron CLI to create a Subnet:
- Using the appropriate credentials, SSH into the OpenStack node where the Neutron client software packages are installed.
- Source the shell RC file to initialize the environment variables required for the CLI commands as seen in the previous recipe.
- The command to create a Subnet is
neutron subnet-createand the mandatory arguments are the Network name and IP address range in the CIDR format. However, it is a good practice to specify a name for the Subnet. For simplicity, we will choose the Network, CookbookNetwork2, that was created earlier because it does not have any associated Subnet yet:
- Now, when we execute the
neutron net-listcommand, we will see thatCookbookNetwork2has an associated Subnet that we just created:
- Users can view the list of Subnets using the
neutron subnet-listcommand:
How it works…
When the user executes the neutron subnet-create command, Neutron creates a Subnet with the specified IP address range and other parameters. Neutron also associates the Subnet with the specified Network.
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