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Knowledge Base & Operational DocumentationHow to Review Terraform Changes That Replace a Production Network Gateway
A Terraform plan may replace a gateway and change egress, public addresses, routes, or VPN connectivity. Applications can lose access to vendors even if the new gateway is healthy.
What to check
Inspect replacement actions, routes, NAT, public IPs, VPN peers, allowlists, dependent subnets, and failover. Identify services that rely on current egress addresses.
Recommended next step
Plan a staged network transition with vendor coordination and rollback. Validate outbound and inbound paths from affected workloads before deleting the existing gateway.
How Informatix Systems can help
Informatix Systems provides infrastructure as code and network engineering services. We can assess the affected system, trace the issue through its dependencies, and help plan a practical improvement. Contact us with the platform involved, when the issue began, and non-sensitive error details.