如何确保我的Kubernetes EBS卷与部署位于相同的可用区中？

Question

I have a k8s cluster on AWS (3 nodes, across us-east-1a , us-east-1b and us-east-1c ) and I'm trying to use an awsElasticBlockStore volume but I keep getting a InvalidVolume.ZoneMismatch error.

I create the volume via aws-cli :

aws ec2 create-volume --availability-zone us-east-1a --size 10

I wait for it to become available then deploy my k8s deployment that has it mapped like so:

volumes: - name: myVol awsElasticBlockStore: volumeID: <volume-id-from-above> fsType: ext4

How can I guarantee that my EBS volume will be in the same AZ as the deployment? Is it via the deployment spec, or is there a better way to create/provision the awsElasticBlockStore that I'm overlooking?

Answer 1

From kubernetes version 1.6 and onwards you don't need to create EBS volume manually. Create a PVC and it will automatically create a AWS volume for you with the required size and in the same region which can easily be attached to your nodes.