AWS ECS Task - Cannot override CPU - amazon-web-services

Question

i am trying to override the CPU Units for a ECS Task in the RunTask method of the SDK.
Task Definition
{
"ipcMode": null,
"executionRoleArn": "arn:aws:iam::111459517389:role/ecsTaskExecutionRole",
"containerDefinitions": [
{
...,
"portMappings": [
{
"hostPort": 80,
"protocol": "tcp",
"containerPort": 80
},
...
],
"command": null,
"linuxParameters": null,
"cpu": 256, # CONTAINER CPU Units (default)
"environment": [
{
"name": "ECS_IMAGE_PULL_BEHAVIOR",
"value": "prefer-cached"
}
],
"ulimits": null,
...
"name": "some-job-container"
}
],
"placementConstraints": [],
"memory": "8192", # TASK SIZE
"taskRoleArn": "arn:aws:iam::111459517389:role/ecsTaskExecutionRole",
"compatibilities": [
"EC2",
"FARGATE"
],
"taskDefinitionArn": "arn:aws:ecs:eu-west-3:111459517389:task-definition/some-definition:7",
"family": "some-job-dev",
"requiresAttributes": [
{
"targetId": null,
"targetType": null,
"value": null,
"name": "com.amazonaws.ecs.capability.logging-driver.awslogs"
},
...
],
"pidMode": null,
"requiresCompatibilities": [
"FARGATE"
],
"networkMode": "awsvpc",
"cpu": "4096", # TASK SIZE
"revision": 7,
"status": "ACTIVE",
"inferenceAccelerators": null,
"proxyConfiguration": null,
"volumes": []
}
And here's the RunTask parameters
{
"taskDefinition":"some-job-dev",
"cluster":"some-cluster",
"overrides":{
"containerOverrides":[
{
"name":"some-job-container",
"command":[
"kosmos",
"segmentation-queue"
],
"cpu":4092,
"memory":8192
}
]
},
"networkConfiguration":{
"awsvpcConfiguration":{
"assignPublicIp":"ENABLED",
"subnets":[
"subnet-789",
"subnet-456",
"subnet-123"
]
}
}
}
When i run a task with these parameters, the memory of the container gets correctly overridden, but not the CPU.
I am following the ECS Documentation and still it doesn't work, am i missing something here ?
Notes:
My task launch type is Fargate

Answer 1

I had a similar issue, and its intermittent. Were you able to solve it?
I see you are passing values as an int, for me specifying them as a string helped.