AWS locations configuration
Private Locations on your AWS account.
Instance specifications
We recommend that you use for your own load generator instances with at least 4 cores.
As Gatling load tests tend to be CPU bound, we recommend using instances of the “Compute Optimized” family.
From our findings, it seems that Intel CPUs perform better than AMD and ARM Graviton ones when it comes to TLS.
As a result, we recommend using c6i.xlarge instances or larger.
You might want to tune the Xmx JVM options to half of the physical memory.
See jvm-options configuration below.
If you don’t, the JVM will use a max heap size of 1/4th of the physical memory.
Permissions
AWS private locations require the control plane to have access to AWS credentials from the default credential provider chain.
See the AWS documentation for the Default Credential Provider Chain.
System requirements
AWS EC2 private locations rely on some dependencies.
So when using a custom image, make sure following are available:
- cloud-init integration.
- jq a lightweight and flexible command-line JSON processor.
- curl a command line tool and library for transferring data with URLs
- Java runtime environment: OpenJDK 64bits LTS versions: 11, 17 or 21 (see Gatling prerequisites)
Control plane configuration file
control-plane {
# Control plane token
token = "cpt_example_c7oze5djp3u14a5xqjanh..."
# Control plane token with an environment variable
token = ${?CONTROL_PLANE_TOKEN}
# Control plane description (optional)
description = "my control plane description"
# Locations configurations
locations = [
{
# Private location ID, must be prefixed by prl_, only consist of numbers 0-9,
# lowercase letters a-z, and underscores, with a max length of 30 characters
id = "prl_private_location_example"
# Private location description (optional)
description = "Private Location on AWS"
# Private location type
type = "aws"
# Configuration specific to AWS type configuration
region = "eu-west-1"
# Certified AMI configuration
ami {
type = "certified"
java = latest # Possible values : 11, 17, 21 or latest
}
# Custom AMI configuration (alternative to certified AMI)
# ami = {
# type = custom
# id = "ami-00000000000000000"
# }
# Security groups
security-groups = ["sg-mysecuritygroup"]
# Instance type
instance-type = "c6i.xlarge"
# Spot instances (optional, default: false)
# spot = true
# Subnets
subnets = ["subnet-a", "subnet-b"]
# Elastic IP addresses (optional)
# You will only be able to deploy a number of load generators up to the number of Elastic IP addresses you have configured.
# elastic-ips = ["203.0.113.3", "203.0.113.4"]
# Profile name (optional)
# profile-name = ""
# IAM Instance profile (optional)
# iam-instance-profile = ""
# Custom tags (optional)
tags {
# ExampleKey = "ExampleValue"
}
# Custom tags for each AWS resource type (optional)
# Only resources types mentioned further are managed
tags-for {
instance {
# ExampleKey = "ExampleValue"
}
volume {
# ExampleKey = "ExampleValue"
}
network-interface {
# ExampleKey = "ExampleValue"
}
}
# Java configuration (following configuration properties are optional)
# System properties (optional)
system-properties {
# ExampleKey = "ExampleValue"
}
# Overwrite JAVA_HOME definition (optional)
# java-home = "/usr/lib/jvm/zulu"
# JVM Options (optional)
# Default ones, that can be overridden with precedence:
# [
# "-XX:MaxInlineLevel=20",
# "-XX:MaxTrivialSize=12",
# "-XX:+IgnoreUnrecognizedVMOptions",
# "--add-opens=java.base/java.nio=ALL-UNNAMED",
# "--add-opens=java.base/jdk.internal.misc=ALL-UNNAMED"
# ]
# Based on your instance configuration, you may want to update Xmx and Xms values.
# jvm-options = ["-Xmx4G", "-Xms512M"]
}
]
}