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VPC interface endpoint selection

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if you place an interface endpoint in multiple AZ's but there is only one consumer from single AZ, what happens by default, does traffic round robin between both AZ's causing cross AZ traffic?

Related to this, when creating a VPC should both DNS resolution and Hostnames be enabled and in the VPC endpoint creation should "Enable Private DNS name" be enabled?

What happens if for instance only VPC DNS resolution is enabled (which I think is default), does traffic still go PrivateLink?

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acontiaws
질문됨 9달 전287회 조회
2개 답변
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It depends on whether you use regional or zonal specific host name of the endpoint. Please refer to the following: https://docs.aws.amazon.com/whitepapers/latest/aws-privatelink/creating-highly-available-endpoint-services.html https://repost.aws/questions/QUOus1wYtCS6O4IBhCYAdSoA/data-routing-to-vpc-endpoint-from-different-az

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AWS-User-alantam
답변함 9달 전
  • acontiaws
    9달 전

    regional so I think it will load balance between AZ's and not prefer based on source AZ and failover to other AZ in case of failure

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수락된 답변

Correct. It uses either ENI which could incur cross-AZ cost.

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AWS-User-alantam
답변함 9달 전

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