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High network bandwidth usage by eks fargate

0

We have an EKS cluster and we are deploying cronjobs using fargate. The cronjobs runs every 15 minutes. My NAT gateway costs skyrocketed because every 15 minutes it was an amount of 1GB BytesOutToSource. Previously we had this cronjobs running in EC2 instances and never used this amount of internet. What could be causing this? For example, I would think that downloading the image from ECR has no costs (They are even in the same region)

Topics
ServerlessContainers
Tags
AWS FargateAmazon Elastic Container Registry (ECR)Amazon Elastic Kubernetes Service
Language
English
ignacio
asked 4 months ago225 views
1 Answer
0
Accepted Answer

Hello.

If you are using Fargate, pulling the container image in ECR will require communication to the NAT Gateway, which should increase costs.
The blog below is for ECS, but I believe the same situation will occur even for EKS.
https://andrew-larse514.medium.com/aws-nat-gateway-ecr-cost-gotcha-a0865d0edd4
https://pierreraffa.medium.com/cost-reduction-using-ecr-vpc-endpoints-ff87316f36a8

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EXPERT
Riku_Kobayashi
answered 4 months ago
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EXPERT
Giovanni Lauria
reviewed a month ago

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