[02] Fargate

Question 1

What load balancers are supported for Fargate tasks?

Answer 1

ALB or NLB

Question 2

What target type is used to registering Fargate tasks to a target group?

Answer 2

ip

Question 3

What is required for UDP traffic on Fargate?

Answer 3

An NLB and Fargate platform version 1.4 or later

Question 4

What is the recommended way to track Fargate usage against service quotas?

Answer 4

Fargate usage metrics published as CloudWatch metrics under the AWS/Usage namespace

Question 5

What Linux parameter is supported on Fargate?

Answer 5

SYS_PTRACE

Question 6

What features are not supported for Windows containers on Fargate?

Answer 6

gMSA (Group Managed Service Accounts) and Amazon FSx

Question 7

How can resource limits be configured on Linux containers in Fargate?

Answer 7

Using ulimits

Question 8

What is the isolation boundary for each Fargate task?

Answer 8

Each Fargate task has its own isolation boundary and does not share the underlying kernel, CPU resources, memory resources, or elastic network interfaces with another task

Question 9

What is the networking mode is supported by Fargate?

Answer 9

awsvpc

Question 10

Which role is required for Fargate tasks?

Answer 10

The task execution role

Question 11

What is the default task execution role created by the console?

Answer 11

ecsTaskExecutionRole with the policy AmazonECSTaskExecutionRolePolicy

Question 12

What type of tasks are run at a discounted rate by Fargate?

Answer 12

Spot tasks, which are used for interruption-tolerant tasks

Question 13

What warning do interruption-tolerant tasks receive before being stopped?

Answer 13

A two-minute warning

Question 14

What infrastructure configuration does Fargate Spot support?

Answer 14

Linux for the OS and X86_64 for the architecture

Question 15

What is used when LATEST is specified for the platform version?

Answer 15

The latest revision of the platform version

Question 16

How are Windows and Linux platform versions released and numbered?

Answer 16

Windows and Linux platform versions are released and numbered independently

Question 17

What container runtime does Fargate for Linux use as of platform version 1.4.0?

Answer 17

containerd

Question 18

What architectures does Windows Fargate support?

Answer 18

X86_64 only

Question 19

What do Windows Server container images need to be created for?

Answer 19

A specific version of Windows Server e.g. Windows Server 2022 Core

Question 20

What field in the service definition specifies the Windows Server version for Fargate?

Answer 20

platformFamily

Question 21

What field in the task definition must match the platformFamily in the service definition?

Answer 21

operatingSystemPlatform

Question 22

How much ephemeral storage do Fargate tasks receive by default?

Answer 22

20 GiB

Question 23

What is the maximum amount of ephemeral storage that can be configured for a Fargate task?

Answer 23

200 GiB

Question 24

How is ephemeral storage configured for a Fargate task?

Answer 24

By setting the ephemeralStorage task definition parameter

Question 25

What is ephemeral storage used for in Fargate tasks?

Answer 25

To pull images, and can be used by the task for other purposes using a bind mount

Question 26

What is cached by Fargate to speed up image pulls for Windows images?

Answer 26

The base layers for Windows versions released in the last month

Question 27

What happens during task retirement?

Answer 27

For service tasks, no action is required as the tasks are replaced while respecting the minimum and maximum healthy percent configured for the service. Standalone tasks are stopped on the task retirement date and are not replaced.

Question 28

How is the reason for tasks stopping due to retirement communicated?

Answer 28

The `stoppedReason` field in the `DescribeTasks` API response will be `ECS is performing maintenance on the underlying infrastructure hosting the task`

Question 29

How are notifications sent for tasks scheduled to be retired?

Answer 29

A notice is sent via email and as an AWS Health notification

Question 30

Where do AWS Health notifications appear?

Answer 30

AWS Health notifications appear in the Personal Health Dashboard (PHD)

Question 31

What account setting controls the notice period for task retirements?

Answer 31

The `fargateTaskRetirementWaitPeriod` account setting

Question 32

What are the supported values for the `fargateTaskRetirementWaitPeriod` setting?

Answer 32

The supported values are `0`, `7` & `14` days. The default value is `7` days

Question 33

Is the `fargateTaskRetirementWaitPeriod` setting applied for critical security updates?

Answer 33

This setting is ignored for critical security updates which occur immediately after the notification

Question 34

What are the two phases of platform version deprecation?

Answer 34

The force update date then the deprecation date

Question 35

What happens on the force update date?

Answer 35

On the force update date, a force deployment is performed on services using `LATEST` as the platform version. Services using a specific platform version, and standalone tasks, are not affected

Question 36

What happens on the deprecation date?

Answer 36

On the deprecation date, new tasks will no longer be able to launch using that platform version. Standalone tasks, and tasks in a service explicitly using the older platform version, will continue running