Amazon Elasticsearch Service
Developer Guide (API Version 2015-01-01)

Amazon Elasticsearch Service Limits

The following tables show limits for Amazon ES resources, including the number of instances per cluster, the minimum and maximum sizes for EBS volumes, and network limits.

Cluster and Instance Limits

The following table shows Amazon ES limits for clusters and instances.

Clusters and Instances Limit

Maximum number of data instances (instance count) per cluster

20 (except for the T2 instance types, which have a maximum of 10)

Note

The default limit is 20 data instances per domain. To request an increase up to 200 per domain (for Elasticsearch 2.3 or later), create a case with the AWS Support Center.

For more information about requesting an increase, see AWS Service Limits.

Maximum number of dedicated master nodes

5

Note

You can use the T2 instance types as dedicated master nodes only if the instance count is 10 or fewer.

Smallest supported instance type

t2.micro.elasticsearch (versions 1.5 and 2.3) and t2.small.elasticsearch (version 5.x and 6.x).

Maximum number of domains per account (per region)

100

For a list of the instance types that Amazon ES supports, see Supported Instance Types.

EBS Volume Size Limits

The following table shows the minimum and maximum sizes for EBS volumes for each instance type that Amazon ES supports. See Amazon Elasticsearch Service Pricing for information on which instance types offer instance storage.

  • If you select magnetic storage under EBS volume type when creating your domain, maximum volume size is 100 GiB for all instance types except t2.micro, t2.small, and t2.medium. For the maximum sizes listed in the following table, select one of the SSD options.

  • 512 GiB is the maximum volume size that is supported with Elasticsearch version 1.5.

Instance Type Minimum EBS Size Maximum EBS Size
t2.micro.elasticsearch 10 GiB 35 GiB
t2.small.elasticsearch 10 GiB 35 GiB
t2.medium.elasticsearch 10 GiB 35 GiB
m3.medium.elasticsearch 10 GiB 100 GiB
m3.large.elasticsearch 10 GiB 512 GiB
m3.xlarge.elasticsearch 10 GiB 512 GiB
m3.2xlarge.elasticsearch 10 GiB 512 GiB
m4.large.elasticsearch 10 GiB 512 GiB
m4.xlarge.elasticsearch 10 GiB 1 TiB
m4.2xlarge.elasticsearch 10 GiB 1.5 TiB
m4.4xlarge.elasticsearch 10 GiB 1.5 TiB
m4.10xlarge.elasticsearch 10 GiB 1.5 TiB
m5.large.elasticsearch 10 GiB 512 GiB
m5.xlarge.elasticsearch 10 GiB 1 TiB
m5.2xlarge.elasticsearch 10 GiB 1.5 TiB
m5.4xlarge.elasticsearch 10 GiB 3 TiB
m5.12xlarge.elasticsearch 10 GiB 9 TiB
c4.large.elasticsearch 10 GiB 100 GiB
c4.xlarge.elasticsearch 10 GiB 512 GiB
c4.2xlarge.elasticsearch 10 GiB 1 TiB
c4.4xlarge.elasticsearch 10 GiB 1.5 TiB
c4.8xlarge.elasticsearch 10 GiB 1.5 TiB
c5.large.elasticsearch 10 GiB 256 GiB
c5.xlarge.elasticsearch 10 GiB 512 GiB
c5.2xlarge.elasticsearch 10 GiB 1 TiB
c5.4xlarge.elasticsearch 10 GiB 1.5 TiB
c5.9xlarge.elasticsearch 10 GiB 3.5 TiB
c5.18xlarge.elasticsearch 10 GiB 7 TiB
r3.large.elasticsearch 10 GiB 512 GiB
r3.xlarge.elasticsearch 10 GiB 512 GiB
r3.2xlarge.elasticsearch 10 GiB 512 GiB
r3.4xlarge.elasticsearch 10 GiB 512 GiB
r3.8xlarge.elasticsearch 10 GiB 512 GiB
r4.large.elasticsearch 10 GiB 1 TiB
r4.xlarge.elasticsearch 10 GiB 1.5 TiB
r4.2xlarge.elasticsearch 10 GiB 1.5 TiB
r4.4xlarge.elasticsearch 10 GiB 1.5 TiB
r4.8xlarge.elasticsearch 10 GiB 1.5 TiB
r4.16xlarge.elasticsearch 10 GiB 1.5 TiB
r5.large.elasticsearch 10 GiB 1 TiB
r5.xlarge.elasticsearch 10 GiB 1.5 TiB
r5.2xlarge.elasticsearch 10 GiB 3 TiB
r5.4xlarge.elasticsearch 10 GiB 6 TiB
r5.12xlarge.elasticsearch 10 GiB 12 TiB
i2.xlarge.elasticsearch 10 GiB 512 GiB
i2.2xlarge.elasticsearch 10 GiB 512 GiB
i3.large.elasticsearch N/A N/A
i3.xlarge.elasticsearch N/A N/A
i3.2xlarge.elasticsearch N/A N/A
i3.4xlarge.elasticsearch N/A N/A
i3.8xlarge.elasticsearch N/A N/A
i3.16xlarge.elasticsearch N/A N/A

Network Limits

The following table shows the maximum size of HTTP request payloads.

Instance Type Maximum Size of HTTP Request Payloads
t2.micro.elasticsearch 10 MiB
t2.small.elasticsearch 10 MiB
t2.medium.elasticsearch 10 MiB
m3.medium.elasticsearch 10 MiB
m3.large.elasticsearch 10 MiB
m3.xlarge.elasticsearch 100 MiB
m3.2xlarge.elasticsearch 100 MiB
m4.large.elasticsearch 10 MiB
m4.xlarge.elasticsearch 100 MiB
m4.2xlarge.elasticsearch 100 MiB
m4.4xlarge.elasticsearch 100 MiB
m4.10xlarge.elasticsearch 100 MiB
m5.large.elasticsearch 10 MiB
m5.xlarge.elasticsearch 100 MiB
m5.2xlarge.elasticsearch 100 MiB
m5.4xlarge.elasticsearch 100 MiB
m5.12xlarge.elasticsearch 100 MiB
c4.large.elasticsearch 10 MiB
c4.xlarge.elasticsearch 100 MiB
c4.2xlarge.elasticsearch 100 MiB
c4.4xlarge.elasticsearch 100 MiB
c4.8xlarge.elasticsearch 100 MiB
c5.large.elasticsearch 10 MiB
c5.xlarge.elasticsearch 100 MiB
c5.2xlarge.elasticsearch 100 MiB
c5.4xlarge.elasticsearch 100 MiB
c5.9xlarge.elasticsearch 100 MiB
c5.18xlarge.elasticsearch 100 MiB
r3.large.elasticsearch 10 MiB
r3.xlarge.elasticsearch 100 MiB
r3.2xlarge.elasticsearch 100 MiB
r3.4xlarge.elasticsearch 100 MiB
r3.8xlarge.elasticsearch 100 MiB
r4.large.elasticsearch 100 MiB
r4.xlarge.elasticsearch 100 MiB
r4.2xlarge.elasticsearch 100 MiB
r4.4xlarge.elasticsearch 100 MiB
r4.8xlarge.elasticsearch 100 MiB
r4.16xlarge.elasticsearch 100 MiB
r5.large.elasticsearch 100 MiB
r5.xlarge.elasticsearch 100 MiB
r5.2xlarge.elasticsearch 100 MiB
r5.4xlarge.elasticsearch 100 MiB
r5.12xlarge.elasticsearch 100 MiB
i2.xlarge.elasticsearch 100 MiB
i2.2xlarge.elasticsearch 100 MiB
i3.large.elasticsearch 100 MiB
i3.xlarge.elasticsearch 100 MiB
i3.2xlarge.elasticsearch 100 MiB
i3.4xlarge.elasticsearch 100 MiB
i3.8xlarge.elasticsearch 100 MiB
i3.16xlarge.elasticsearch 100 MiB

Java Process Limit

Amazon ES limits Java processes to a heap size of 32 GiB. Advanced users can specify the percentage of the heap used for field data. For more information, see Configuring Advanced Options and JVM OutOfMemoryError.