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**To create an EC2 Fleet that launches Spot Instances as the default purchasing model**
This example creates an EC2 Fleet using the minimum parameters required to launch a fleet: a launch template, target capacity, and default purchasing model. The launch template is identified by its launch template ID and version number. The target capacity for the fleet is 2 instances, and the default purchasing model is ``spot``, which results in the fleet launching 2 Spot Instances.
When you create an EC2 Fleet, use a JSON file to specify information about the instances to launch.
Command::
aws ec2 create-fleet --cli-input-json file://file_name.json
Output::
{
"FleetId": "fleet-12a34b55-67cd-8ef9-ba9b-9208dEXAMPLE"
}
Where file_name.json contains the following::
{
"LaunchTemplateConfigs": [
{
"LaunchTemplateSpecification": {
"LaunchTemplateId": "lt-0e8c754449b27161c",
"Version": "1"
}
}
],
"TargetCapacitySpecification": {
"TotalTargetCapacity": 2,
"DefaultTargetCapacityType": "spot"
}
}
**To create an EC2 Fleet that launches On-Demand Instances as the default purchasing model**
This example creates an EC2 Fleet using the minimum parameters required to launch a fleet: a launch template, target capacity, and default purchasing model. The launch template is identified by its launch template ID and version number. The target capacity for the fleet is 2 instances, and the default purchasing model is ``on-demand``, which results in the fleet launching 2 On-Demand Instances.
When you create an EC2 Fleet, use a JSON file to specify information about the instances to launch.
Command::
aws ec2 create-fleet --cli-input-json file://file_name.json
Output::
{
"FleetId": "fleet-12a34b55-67cd-8ef9-ba9b-9208dEXAMPLE"
}
Where file_name.json contains the following::
{
"LaunchTemplateConfigs": [
{
"LaunchTemplateSpecification": {
"LaunchTemplateId": "lt-0e8c754449b27161c",
"Version": "1"
}
}
],
"TargetCapacitySpecification": {
"TotalTargetCapacity": 2,
"DefaultTargetCapacityType": "on-demand"
}
}
**To create an EC2 Fleet that launches On-Demand Instances as the primary capacity**
This example creates an EC2 Fleet that specifies the total target capacity of 2 instances for the fleet, and a target capacity of 1 On-Demand Instance. The default purchasing model is ``spot``. The fleet launches 1 On-Demand Instance as specified, but needs to launch one more instance to fulfil the total target capacity. The purchasing model for the difference is calculated as ``TotalTargetCapacity`` - ``OnDemandTargetCapacity`` = ``DefaultTargetCapacityType``, which results in the fleet launching 1 Spot Instance.
When you create an EC2 Fleet, use a JSON file to specify information about the instances to launch.
Command::
aws ec2 create-fleet --cli-input-json file://file_name.json
Output::
{
"FleetId": "fleet-12a34b55-67cd-8ef9-ba9b-9208dEXAMPLE"
}
Where file_name.json contains the following::
{
"LaunchTemplateConfigs": [
{
"LaunchTemplateSpecification": {
"LaunchTemplateId": "lt-0e8c754449b27161c",
"Version": "1"
}
}
],
"TargetCapacitySpecification": {
"TotalTargetCapacity": 2,
"OnDemandTargetCapacity":1,
"DefaultTargetCapacityType": "spot"
}
}
**To create an EC2 Fleet that launches Spot Instances using the lowest-price allocation strategy**
If the allocation strategy for Spot Instances is not specified, the default allocation strategy, which is ``lowest-price``, is used. This example creates an EC2 Fleet using the ``lowest-price`` allocation strategy. The three launch specifications, which override the launch template, have different instance types but the same weighted capacity and subnet. The total target capacity is 2 instances and the default purchasing model is ``spot``. The EC2 Fleet launches 2 Spot Instances using the instance type of the launch specification with the lowest price.
When you create an EC2 Fleet, use a JSON file to specify information about the instances to launch.
Command::
aws ec2 create-fleet --cli-input-json file://file_name.json
Output::
{
"FleetId": "fleet-12a34b55-67cd-8ef9-ba9b-9208dEXAMPLE"
}
Where file_name.json contains the following::
{
"LaunchTemplateConfigs": [
{
"LaunchTemplateSpecification": {
"LaunchTemplateId": "lt-0e8c754449b27161c",
"Version": "1"
}
"Overrides": [
{
"InstanceType": "c4.large",
"WeightedCapacity": 1,
"SubnetId": "subnet-a4f6c5d3"
},
{
"InstanceType": "c3.large",
"WeightedCapacity": 1,
"SubnetId": "subnet-a4f6c5d3"
},
{
"InstanceType": "c5.large",
"WeightedCapacity": 1,
"SubnetId": "subnet-a4f6c5d3"
}
]
}
],
"TargetCapacitySpecification": {
"TotalTargetCapacity": 2,
"DefaultTargetCapacityType": "spot"
}
}