All checks
Medium ECS · regional

ECS Fargate services should run on the latest Fargate platform version

Checks that each ECS service on Fargate, by launch type or a FARGATE or FARGATE_SPOT capacity provider, sets its platform version to LATEST, or to 1.4.0 for Linux or 1.0.0 for Windows. A platform version is the kernel and container runtime its tasks run on, and newer ones bring operating system, feature and security updates.

service
ECS
severity
Medium
scope
evaluated in every region

How to fix it

  • Interrupts service: Changing the platform version starts a new deployment, which replaces every running task in the service with one on the new version.
  • Can break clients: From an older Linux version, 1.4.0 sends image pulls and secret lookups through the task's own network interface, so its security group and VPC endpoints must allow them.
  • Replaces the resource: A service on the CODE_DEPLOY or EXTERNAL deployment controller refuses this update: deploy replacement task sets on the new version, through CodeDeploy or CreateTaskSet.

In the console

ECS → Clusters → the cluster → Services → the service → Update → Compute configuration

Platform version
LATEST, which is 1.4.0 for Linux and 1.0.0 for Windows

With the AWS CLI

aws ecs update-service --cluster <cluster-name> --service <service-name> --platform-version LATEST --region <region>

With Terraform

resource "aws_ecs_service" "this" {
  name             = "example"
  launch_type      = "FARGATE"
  platform_version = "LATEST"
}

See which of your accounts this check is failing on.

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