Subnet0CIDR
Public Subnet 0 CIDR Block. This defines the IP address range for the first public subnet in the Rack's VPC. The CIDR block must fall within the VPCCIDR range.
| Default value | 10.0.1.0/24 |
Use Cases
- Customizing subnet ranges when installing into an existing VPC to avoid overlap with pre-existing subnets
- Adjusting the CIDR size to allocate more or fewer IP addresses based on expected workload density
- Aligning subnet CIDRs with your organization's IP address management (IPAM) scheme
Additional Information
This subnet is placed in the first Availability Zone. Public subnets are used for resources that need direct internet access, such as load balancers and NAT gateways. The default /24 CIDR provides 254 usable IP addresses.
When installing a Rack into an ExistingVpc, ensure the CIDR blocks do not overlap with existing subnets in that VPC. Subnet CIDR values should typically only be customized at install time or when using ExistingVpc.
$ convox rack params set Subnet0CIDR=10.1.1.0/24
See Also
