Notes on IP address management, Terraform, and what breaks when address space outgrows a spreadsheet.
The deal closes on a Friday. On Monday you own two completely separate networks, neither ever checked against the other. What the overlap does, what you can set up in the first month, and what is still manual.
M&AIPAMNetworkingTerraformMSP
Read it →A lot of IPAM tools say they integrate with Terraform. Sometimes that means pools and subnets are resources Terraform creates, tracks and destroys, and sometimes it means an API you call from a wrapper script. The difference is not cosmetic.
TerraformIPAMProvidersMSPNetworking
Read it →Every Terraform codebase has a subnet_cidr variable somebody chose by hand. Improving the record never fixes that, because a record cannot refuse.
TerraformIPAMAWSAzureNetworking
Read it →