Openstack / List Subnets Associated With Network
List Subnets Associated With Network
Lists all subnets associated with a specific network.
openstack subnet list --network <network_id_or_name> openstack subnet list --network <network_id_or_name> #!/bin/bash
# List Subnets Associated With Network
openstack subnet list --network {{network_id_or_name}} import subprocess
# List Subnets Associated With Network
# Make sure to replace <placeholders> with actual values
def run_command():
cmd = [
"openstack",
"subnet",
"list",
"--network",
"<network_id_or_name>"
]
try:
print(f"Executing: {' '.join(cmd)}")
subprocess.run(cmd, check=True)
except subprocess.CalledProcessError as e:
print(f"Error: {e}")
except FileNotFoundError:
print("Error: openstack not found. Please install it first.")
if __name__ == "__main__":
run_command() When To Use
When needing to analyze subnetting within a particular network context.
Pro Tip
Use `--format csv` for compatibility with spreadsheet applications.
Command Builder
Tune the command before you copy it
openstack subnet list --network <network_id_or_name> Anatomy of Output
Understanding the result
+---------------------------------------+-------------------+----------+--------+ Table Header Defines the boundaries of the associated subnet listing.
| Subnet ID | Name | CIDR | Status | Column Names Indicates the fields returned for each associated subnet.
| 2345efgh-6789-90ab-cdef-0123456789 | Subnet1 | 10.1.1.0/24 | ACTIVE | Subnet Entry Example of a listed subnet associated with the network.
Troubleshooting
Common pitfalls
Error: No subnets associated with network: network-name.
Solution: Ensure subnets are created and associated with the network.
Error: Permission denied for listing subnets of the network.
Solution: Check role permissions for the currently authenticated user.
Error: Unable to contact the network service.
Solution: Ensure the OpenStack network service is operational.
Command Breakdown
What each part is doing
-
openstack - Base Command
- The executable that performs this operation. Here it runs Openstack before the shell applies any redirect operators.
-
<network_id_or_name> - network id or name
- The value supplied for network id or name.
-
--network - Command Option
- Tool-specific option used by this command invocation.
Alternative Approaches
Comparable commands in other tools
Alternative networking tools for the same job.