Is the VPC_ID env var used?

[SharpEdgeMarshall]

What happened:

We are wondering if the env var VPC_ID added by eks is still used by the vpc-cni plugin, there's no trace of its usage in the doc or the code.
We need to know it because we are self-managing the vpc-cni addon so we need to configure all the needed env vars.

Environment:

• Kubernetes version (use kubectl version): NA
• CNI Version: NA
• OS (e.g: cat /etc/os-release): Bottlerocket
• Kernel (e.g. uname -a): NA

[orsenthil]

We are wondering if the env var VPC_ID added by eks is still used by the vpc-cni plugin

No. We don't. But vpc-id is very important and we get it from the IMDS of the machine

amazon-vpc-cni-k8s/pkg/awsutils/awsutils.go

Line 461 in 1818159

// retrieve vpc-id

[SharpEdgeMarshall]

Sure, I know that; we wondered why EKS put that env var if it's not used.