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feat(ec2): network interface definitions for launch templates #34327

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5ad5aa2
Implement basic functionality for defining network interface configur…
Apr 17, 2024
3c3d94b
Add test and test snapshot
Apr 18, 2024
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watersry May 1, 2025
b07cee8
Merge branch 'main' into feature/network-interface-definitions-for-la…
watersry May 1, 2025
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Merge branch 'main' into feature/network-interface-definitions-for-la…
watersry May 1, 2025
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4 changes: 2 additions & 2 deletions ...test/aws-ec2/test/integ.launch-template.js.snapshot/aws-cdk-ec2-lt-metadata-1.assets.json
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50 changes: 50 additions & 0 deletions ...st/aws-ec2/test/integ.launch-template.js.snapshot/aws-cdk-ec2-lt-metadata-1.template.json
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Original file line number Diff line number Diff line change
Expand Up @@ -336,6 +336,56 @@
}
]
}
},
"LTWithNetworkInterfacesC793C8F4": {
"Type": "AWS::EC2::LaunchTemplate",
"Properties": {
"LaunchTemplateData": {
"NetworkInterfaces": [
{
"AssociatePublicIpAddress": false,
"DeleteOnTermination": true,
"DeviceIndex": 0
},
{
"AssociatePublicIpAddress": false,
"DeleteOnTermination": true,
"DeviceIndex": 1
}
],
"TagSpecifications": [
{
"ResourceType": "instance",
"Tags": [
{
"Key": "Name",
"Value": "aws-cdk-ec2-lt-metadata-1/LTWithNetworkInterfaces"
}
]
},
{
"ResourceType": "volume",
"Tags": [
{
"Key": "Name",
"Value": "aws-cdk-ec2-lt-metadata-1/LTWithNetworkInterfaces"
}
]
}
]
},
"TagSpecifications": [
{
"ResourceType": "launch-template",
"Tags": [
{
"Key": "Name",
"Value": "aws-cdk-ec2-lt-metadata-1/LTWithNetworkInterfaces"
}
]
}
]
}
}
},
"Mappings": {
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14 changes: 13 additions & 1 deletion ...testing/framework-integ/test/aws-ec2/test/integ.launch-template.js.snapshot/manifest.json
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2 changes: 1 addition & 1 deletion ...cdk-testing/framework-integ/test/aws-ec2/test/integ.launch-template.js.snapshot/tree.json
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7 changes: 7 additions & 0 deletions packages/@aws-cdk-testing/framework-integ/test/aws-ec2/test/integ.launch-template.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,13 @@ new ec2.LaunchTemplate(stack, 'LTWithPlacementGroup', {
placementGroup: pg,
});

new ec2.LaunchTemplate(stack, 'LTWithNetworkInterfaces', {
networkInterfaces: [
{ associatePublicIpAddress: false, deviceIndex: 0, deleteOnTermination: true },
{ associatePublicIpAddress: false, deviceIndex: 1, deleteOnTermination: true },
],
});

Comment on lines +55 to +61
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@ozelalisen ozelalisen May 19, 2025

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The integration test only covers a basic case with minimal properties. It doesn't test more complex scenarios like using security groups, subnets, or other network interface properties.

new integ.IntegTest(app, 'LambdaTest', {
testCases: [stack],
diffAssets: true,
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29 changes: 29 additions & 0 deletions packages/aws-cdk-lib/aws-ec2/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2479,6 +2479,35 @@ const launchTemplate = new ec2.LaunchTemplate(this, 'LaunchTemplate', {
});
```

Following demonstrates how to add multiple network interface cards to launch template.
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@ozelalisen ozelalisen May 19, 2025

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Consider adding a comment explaining the real-world use case this example addresses, such as multi-homed instances or instances with multiple public IPs.


```ts
declare const vpc: ec2.Vpc;

const sg1 = new ec2.SecurityGroup(this, 'sg1', {
vpc: vpc,
});
const sg2 = new ec2.SecurityGroup(this, 'sg2', {
vpc: vpc,
});

new ec2.LaunchTemplate(this, 'LaunchTemplate', {
machineImage: ec2.MachineImage.latestAmazonLinux2023(),
networkInterfaces: [
{
associatePublicIpAddress: false,
deviceIndex: 0,
groups: [sg1],
},
{
associatePublicIpAddress: false,
deviceIndex: 1,
groups: [sg2],
},
],
});
```

### Placement Group

Specify `placementGroup` to enable the placement group support:
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