Amazon ECS service quotas
The following tables provide the default service quotas, also referred to as limits, for Amazon ECS for an AWS account. For more information on the service quotas for other AWS services that you can use with Amazon ECS, such as Elastic Load Balancing and Auto Scaling, see AWS service quotas in the Amazon Web Services General Reference.
Amazon ECS service quotas
The following are Amazon ECS service quotas.
Most of these service quotas, but not all, are listed under the Amazon Elastic Container Service (Amazon ECS) namespace in the Service Quotas console. To request a quota increase, see Requesting a quota increase in the Service Quotas User Guide.
Service quota |
Description |
Default quota value |
Adjustable |
---|---|---|---|
Clusters |
The maximum number of clusters in this account in the current Region. |
10,000 |
Yes |
Container instances per cluster |
The maximum number of container instances per cluster. |
2,000 |
Yes |
Services per cluster |
The maximum number of services per cluster. |
5,000 |
Yes |
Tasks per service |
The maximum number of tasks per service (the desired count). |
5,000 |
Yes |
Tasks launched ( |
The maximum number of tasks that can be launched per
|
10 |
No |
Container instances per start-task |
The maximum number of container instances specified in a
|
10 |
No |
Revisions per task definition family |
The maximum number of revisions per task definition family. Deregistering a task definition revision does not exclude it from being included in this limit. |
1,000,000 |
No |
Task definition size limit |
The maximum size, in KiB, of a task definition. |
64 |
No |
Task definition max containers |
The maximum number of containers definitions within a task definition. |
10 |
No |
Subnets specified in an
|
The maximum number of subnets specified within an
|
16 |
No |
Security groups specified in an
|
The maximum number of security groups specified within an
|
5 |
No |
Target groups per service |
The maximum number of target groups per service, if using an Application Load Balancer or a Network Load Balancer. |
5 |
No |
Classic Load Balancers per service |
The maximum number of Classic Load Balancers per service. |
1 |
No |
Tags per resource |
The maximum number of tags per resource. This applies to task definitions, clusters, tasks, and services. |
50 |
No |
AWS Fargate service quotas
The following are Amazon ECS on AWS Fargate service quotas.
These service quotas are listed under the AWS Fargate namespace in the Service Quotas console. To request a quota increase, see Requesting a quota increase in the Service Quotas User Guide.
Service quota |
Description |
Default quota value |
Adjustable |
---|---|---|---|
Fargate On-Demand resource count |
The maximum number of Amazon ECS tasks and Amazon EKS pods running concurrently on Fargate in this account in the current Region. |
1,000 |
Yes |
Fargate Spot resource count |
The maximum number of Amazon ECS tasks running concurrently on Fargate Spot in this account in the current Region. |
1,000 |
Yes |
Managing your Amazon ECS and AWS Fargate service quotas in the AWS Management Console
Amazon ECS has integrated with Service Quotas, an AWS service that enables you to view and manage your quotas from a central location. For more information, see What Is Service Quotas? in the Service Quotas User Guide.
Service Quotas makes it easy to look up the value of your Amazon ECS service quotas.