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AWS PrivateLink: VPC Peering Configuration

Last Updated: Dec. 06, 2023

To utilize our Coralogix AWS PrivateLink feature, it is essential to establish a VPC endpoint within the Coralogix AWS region corresponding to your Coralogix domain—commonly referred to as a same-region VPC.

In cases where your AWS resources for monitoring are located in a different region, you can achieve the required connectivity by employing VPC peering. This involves deploying your Lambda in a cross-region VPC, strategically positioned in proximity to the source.

This tutorial provides step-by-step guidance on configuring your cross-region VPC setup. The configuration ensures that any traffic directed to the PrivateLink domain name follows a route through the VPC peering connection in the same region, ultimately reaching the PrivateLink endpoint.

Prerequisites

When your Lambda is being deployed into a cross-region VPC, use VPC peering to allow the Lambda local VPC to communicate over the PrivateLink through the same-region VPC. To do this, configure the same-region VPC.

VPC Peering Configuration

STEP 1. Configure the DNS record to give it time to propagate.

  • Navigate to Route 53.
  • Create a new private hosted zone for your Coralogix domain and align it with your Lambda local VPC.
  • Click Created hosted zone.

STEP 2. Configure an A record type pointing to the PrivateLink VPC endpoint.

  • In the private hosted zone, set the record name to ingress.private, with an alias to VPC endpoint – that is, an alias pointing to the VPC PrivateLink endpoint of your same-region VPC.
  • Select the main regional endpoint that does not include availability zone references.
  • Click Create records.

Notes:

  • The Route 53 rules may take some time to propagate.

STEP 3. Set up the VPC peering connection between the two VPCs.

  • Navigate to the VPC console of the cross-region VPC.
  • Select Peering Connections in the left-hand menu.
  • Select Create Peering Connection.

STEP 4. Set the VPC ID (Requester) to the cross-region VPC that will host your Lambda.

  • In the local VPC to peer with section, select the region of your same-region VPC.
  • Manually enter the VPC ID (Accepter) of the same-region VPC.
  • Click Create peering connection.

STEP 5. Find and accept the VPC peering request in the target region.

  • Switch regions.
  • In the Peering Connections, find and accept the request.

STEP 6. Adjust your routing tables.

  • Adjust the routing tables of the cross-region VPC subnets.
  • Validate that the routing table(s) in use by the subnets include routes to the same-region VPC CIDR range. The Target will be the peering connection you just created.
  • Click Save changes.

STEP 7. Once you’ve added the route to all of your subnets, do the same for the same-region VPC. This ensures return traffic can be routed back to the cross-region VPC.

Notes:

  • You will likely want an Internet or NAT gateway configured for testing purposes.

Next Steps

Align the VPC to your Lambda. Instructions can be found here.

Support

Need help?

Our world-class customer success team is available 24/7 to walk you through your setup and answer any questions that may come up.

Feel free to reach out to us via our in-app chat or by sending us an email at support@coralogix.com.

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