Stateful applications across more than one Availability Zone?

Question

https://docs.aws.amazon.com/eks/latest/userguide/autoscaling.html

In the AWS EKS documentation on autoscaling (see above), there is a section titled "Use EBS volumes as persistent storage" which discusses building stateful applications in Kuberenetes. Specifically, there is the following statement: "For a better solution, consider building stateful applications that are sharded across more than one Availability Zone using a separate Amazon EBS volume for each Availability Zone."
How do I do this - create a separate EBS volume for each availability zone?

Answer

From the Management console
Navigate to EC2
Then Navigate to EBS

Click create and one of the options is Availability Zone.

the below image illustrates the above
![Enter image description here](/media/postImages/original/IMAjRdAA-qRQaoEVER6f5K8w)

After that you can use Kubernetes **Taints and Tolerations** to ensure that your pods are scheduled on the appropriate nodes.
https://docs.aws.amazon.com/eks/latest/userguide/node-taints-managed-node-groups.html

Stateful applications across more than one Availability Zone?

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