A VPC Peering Accepted in One Apply, with DNS Across It and Routes on Both Sides
A VPC peering between two VPCs in one account and region, accepted in the same apply, with DNS resolution across it and routes written in every listed route table on both sides for every CIDR of the other. A default route through a peering is refused (CKV2_AWS_44). Peering is not transitive; past a handful of VPCs the transit gateway is the product.
Verification
Static-verifiedPassed: validated and lint-clean (provider-schema-validated for AWS/Azure/GCP; Terraform-language lint elsewhere).
Conformance
- Static validation (fmt · validate · tflint)
- Security scan clean (Checkov)
- Plan tests (mocked: validation rules · outputs)
Provenance
- SHA-256 checksum
- Signature (pending)
Functional
- Live test pending (no cloud run yet)
Last verified 2026-09-14 · how we verify
Use it from the registry
terraform · opentofumodule "vpc_peering" {
source = "www.iac-bazaar.com/iac-bazaar/aws-vpc-peering/aws"
version = "1.0.0"
}Needs a registry token from /account/tokens. The module itself is free; the account is what identifies you. Full setup: registry docs.
Inputs & outputs
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Documentation
aws-vpc-peering
A VPC peering accepted in one apply, with DNS resolution across it and
the routes on both sides. Works with Terraform and OpenTofu
(>= 1.6), aws provider >= 6.0, < 7.0.
A peering with no routes connects nothing; routes are written in every listed route table on both sides.
DNS resolution across the peering is off by default; on here.
A default route through a peering is refused; the routes are the peer's own CIDRs.
Verification
Static validation runs tofu fmt, init, validate, tflint and checkov.
This module has not yet had a live test, so it is published as statically
validated with its live test pending and does not carry the live-tested mark.
Usage code & full reference need an account
The complete copy-paste usage, the full input/output reference, and operational notes are free with an account - shown here and bundled in the download. Sign in and this section fills in.
- Usage
Related modules
aws-vpc-lattice
auth_type defaults to NONE, so any client in any associated VPC can call any service with no identity and no policy - and associating one more VPC silently grants everything in it. Defaults to AWS_IAM and requires per-VPC security groups.
aws-client-vpn
Remote-access VPN endpoint with certificate or SAML authentication, split tunnelling, per-group authorization rules and connection logging. There is no allow-all shortcut: an endpoint with no rule reaches nothing.
aws-cloud-map
Private DNS, public DNS or API-only namespaces and the services registered in them. Documents the health-check trap: a private namespace gets a custom check that something else must update, and one nobody updates reports healthy forever.
aws-cloud-wan
A global network whose segments, routing and attachment placement live in one policy document rather than per-region route tables. The policy VERSION is executed as a second step, so a change cannot report success while the network still runs the previous one.
aws-direct-connect
Gateway, connections, virtual interfaces and associations. A private circuit is a private path, not a private conversation: traffic crosses it in clear text unless MACsec is on, and should_encrypt quietly falls back to clear text.
aws-nat-gateway
NAT gateways for an existing VPC, one per availability zone with its own Elastic IP, and the private route tables routed through the gateway in the same zone. A single gateway for every zone pays cross-zone charges on every byte and loses egress with that zone; it has to be accepted by name. Private (no address) mode for transit paths; gateway_count says what bills by the hour.