before baseline
Prerequisites
Only what baseline needs. Dual-AZ and multi-region list their extras on their own pages.
Baseline (relay_iport)
| Need | Detail |
|---|---|
| VPC | Private subnet for the caster EC2 |
| NLB | Subnets in 2+ AZs (nlb_subnet_ids) |
| Reach | Caster subnet can open TCP to the receiver IPort (field_sources) |
| Clients | CIDRs allowed on the NLB SG (nlb_client_cidr_blocks) |
| Auth | NTRIP client password in tfvars (not committed) |
| Access | SSM Session Manager for host logs |
Tools
Terraform, AWS CLI v2, and the Session Manager plugin.
Later chapters
| Chapter | Extra |
|---|---|
| Dual-AZ | Second AZ subnet · private hosted zone |
| Multi-region | SYD VPC · two profiles · zone on both VPCs |