Subnet CIDR customization in Schematics

[sam-andaluri]

The subnet CIDR defaults to VPC default which creates a new CIDR block of /18 for each zone. So I cannot install 2 LSF clusters in the same zone Or I if my on-prem network had the same CIDR as LSF default then the overlap would not allow me to connect them together.

ibm_is_subnet module uses VPC default but the module allows specifying a custom CIDR. It wouldn't be difficult to expose or accept a custom CIDR via terraform variables such Schematics can pick up and let customer choose default or a custom CIDR.

[AugieMena3]

hi @sam-andaluri yes, we acknowledge that the CIDR block overlap issue when trying to establish communication between LSF clusters needs to be addressed. We will look at allowing the user to specify a custom CIDR in a future release. Thanks for taking the time to provide this feedback.

[AugieMena3]

The capability to specify a custom CIDR has been implemented in our Symphony solution: https://cloud.ibm.com/docs/hpc-spectrum-symphony?topic=hpc-spectrum-symphony-deployment-values. However, it still needs to be implemented in the LSF solution.