Eksctl: Custom AMI and Launch Template support for Managed Nodegroups

[cPu1]

EKS now supports specifying a custom AMI and providing a launch template for managed nodegroups. This will allow eksctl to support features that weren't possible before for managed nodegroups.

Add support for missing features using the launch template capability, including the following:

• Custom AMI (ami)
• instancePrefix and instanceName to configure the EC2 instance name for a nodegroup
• securityGroups.attachIDs to add custom security groups
• ebsOptimized, volumeType, volumeName, volumeEncrypted, volumeKmsKeyID and volumeIOPS
• maxPodsPerNode
• preBootstrapCommands and overrideBootstrapCommand
• disableIMDSv1

Also add support for providing a custom launch template to create a managed nodegroup.

[inductor]

Can you provide an example of this feature please?

[michaelbeaumont]

Hi @inductor, the docs aren't available at the usual URL yet but check out https://release-0_26--eksctl.netlify.app/usage/launch-template-support/

[kevintangpn]

Hi,
I used launchTemplate to config yaml
but eksctl respose like

error unmarshaling JSON: while decoding JSON: json: unknown field "launchTemplate"

i've try sample like
https://release-0_26--eksctl.netlify.app/usage/launch-template-support/
https://aws.amazon.com/blogs/containers/introducing-launch-template-and-custom-ami-support-in-amazon-eks-managed-node-groups/

my eksctl version is 0.25

someone can help ? thanks.

[inductor]

@kevintangpn look at the release number. It's 0.26.

[nsaud01]

I'm getting that same error:

Error: loading config file "devops-nodegroup.yaml": error unmarshaling JSON: while decoding JSON: json: unknown field "launchTemplate" with eksctl v0.31.0

[nsaud01]

I see where the error was. My issue was that I was using nodeGroups: when it should've been managedNodeGroups:. Hope that helps someone.