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by andoriyu
2244 days ago
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> Turns out internal IP addresses are a resource, too. That's not what is happening in AWS. IP address are resources (duh), but that's no the issue. With their CNI plugin each pod gets its own Elastic Network Interface. ENIs aren't just virtio's virtual network, it could be ENA (100Gbps) or Intel VF (10Gbs). It's a hardware limitation of amazon virtualization stack starting with previous generation instances. > I was quite surprised when pods stopped scheduling even though CPU and memory were available. This is well documented here: https://github.com/aws/amazon-vpc-cni-k8s |
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