Supported Limits

Trusted Advisor Data

So long as the Service and Limit names used by Trusted Advisor (and returned in its API responses) exactly match those shown below, all limits listed in Trusted Advisor “Service Limit” checks should be automatically used by awslimitchecker. The following service limits have been confirmed as being updated from Trusted Advisor:

  • AutoScaling
    • Auto Scaling groups
    • Launch configurations
  • EBS
    • Active snapshots
    • Active volumes
    • General Purpose (SSD) volume storage (GiB)
    • Magnetic volume storage (GiB)
    • Provisioned IOPS
    • Provisioned IOPS (SSD) storage (GiB)
  • EC2
    • Elastic IP addresses (EIPs)
    • VPC Elastic IP addresses (EIPs)
  • ELB
    • Active load balancers
  • RDS
    • DB instances
    • DB parameter groups
    • DB security groups
    • DB snapshots per user
    • Max auths per security group
    • Storage quota (GB)
  • VPC
    • Internet gateways
    • VPCs

Limits Retrieved from Service APIs

The limits listed below can be retrieved directly from their Service’s API; this information should be the most accurate, and is used with higher precedence than anything other than explicit limit overrides:

  • AutoScaling
    • Auto Scaling groups
    • Launch configurations
  • EC2
    • Elastic IP addresses (EIPs)
    • Running On-Demand EC2 instances
    • VPC Elastic IP addresses (EIPs)
    • VPC security groups per elastic network interface

Current Checks

The section below lists every limit that this version of awslimitchecker knows how to check, and its hard-coded default value (per AWS documentation). Limits marked with (TA) are comfirmed as being updated by Trusted Advisor.

AutoScaling

Limit Default
Auto Scaling groups (TA) (API) 20
Launch configurations (TA) (API) 100

EBS

Limit Default
Active snapshots (TA) 10000
Active volumes (TA) 5000
General Purpose (SSD) volume storage (GiB) (TA) 20480
Magnetic volume storage (GiB) (TA) 20480
Provisioned IOPS (SSD) storage (GiB) (TA) 20480
Provisioned IOPS (TA) 40000

EC2

Limit Default
Elastic IP addresses (EIPs) (TA) (API) 5
Rules per VPC security group 50
Running On-Demand EC2 instances (API) 20
Running On-Demand c1.medium instances 20
Running On-Demand c1.xlarge instances 20
Running On-Demand c3.2xlarge instances 20
Running On-Demand c3.4xlarge instances 20
Running On-Demand c3.8xlarge instances 20
Running On-Demand c3.large instances 20
Running On-Demand c3.xlarge instances 20
Running On-Demand c4.2xlarge instances 20
Running On-Demand c4.4xlarge instances 10
Running On-Demand c4.8xlarge instances 5
Running On-Demand c4.large instances 20
Running On-Demand c4.xlarge instances 20
Running On-Demand cc2.8xlarge instances 20
Running On-Demand cg1.4xlarge instances 2
Running On-Demand cr1.8xlarge instances 2
Running On-Demand d2.2xlarge instances 20
Running On-Demand d2.4xlarge instances 10
Running On-Demand d2.8xlarge instances 5
Running On-Demand d2.xlarge instances 20
Running On-Demand g2.2xlarge instances 5
Running On-Demand g2.8xlarge instances 2
Running On-Demand hi1.4xlarge instances 2
Running On-Demand hs1.8xlarge instances 2
Running On-Demand i2.2xlarge instances 8
Running On-Demand i2.4xlarge instances 4
Running On-Demand i2.8xlarge instances 2
Running On-Demand i2.xlarge instances 8
Running On-Demand m1.large instances 20
Running On-Demand m1.medium instances 20
Running On-Demand m1.small instances 20
Running On-Demand m1.xlarge instances 20
Running On-Demand m2.2xlarge instances 20
Running On-Demand m2.4xlarge instances 20
Running On-Demand m2.xlarge instances 20
Running On-Demand m3.2xlarge instances 20
Running On-Demand m3.large instances 20
Running On-Demand m3.medium instances 20
Running On-Demand m3.xlarge instances 20
Running On-Demand m4.2xlarge instances 20
Running On-Demand m4.4xlarge instances 20
Running On-Demand m4.8xlarge instances 20
Running On-Demand m4.large instances 20
Running On-Demand m4.xlarge instances 20
Running On-Demand r3.2xlarge instances 20
Running On-Demand r3.4xlarge instances 10
Running On-Demand r3.8xlarge instances 5
Running On-Demand r3.large instances 20
Running On-Demand r3.xlarge instances 20
Running On-Demand t1.micro instances 20
Running On-Demand t2.large instances 20
Running On-Demand t2.medium instances 20
Running On-Demand t2.micro instances 20
Running On-Demand t2.small instances 20
Security groups per VPC 100
VPC Elastic IP addresses (EIPs) (TA) (API) 5
VPC security groups per elastic network interface (API) 5

ELB

Limit Default
Active load balancers (TA) 20
Listeners per load balancer 100

ElastiCache

Limit Default
Clusters 50
Nodes 50
Nodes per Cluster 20
Parameter Groups 20
Security Groups 50
Subnet Groups 50

RDS

Limit Default
DB instances (TA) 40
DB parameter groups (TA) 50
DB security groups (TA) 25
DB snapshots per user (TA) 50
Event Subscriptions 20
Max auths per security group (TA) 20
Option Groups 20
Read replicas per master 5
Reserved Instances 40
Storage quota (GB) (TA) 100000
Subnet Groups 20
Subnets per Subnet Group 20
VPC Security Groups 5

VPC

Limit Default
Entries per route table 50
Internet gateways (TA) 5
Network ACLs per VPC 200
Route tables per VPC 200
Rules per network ACL 20
Subnets per VPC 200
VPCs (TA) 5