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sassoftware / viya4-iac-aws

This project contains Terraform configuration files to provision infrastructure components required to deploy SAS Viya platform products products on Amazon AWS.
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Confirmation of instance types used in 'ha' and 'minimal' examples #286

Open tomstarr opened 6 months ago

tomstarr commented 6 months ago

Terraform Version Details

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Terraform Variable File Details

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Steps to Reproduce

I'm currently reviewing the example tfvars files of the 'ha' and 'minimal' deployment. I notice that the instance types r5 and m5 are used, rather than r5d or m5d. As far as I am aware, the distinction between these instance types is that the r5 and m5 type do not come with any 'instance (ephemeral) storage', yet the r5d and m5d types do.

Is it the intention of these examples that ephemeral disk is available not used for SASWORK and CASCACHE (minimal example) and SASWORK (ha example)?

Also, will in the minimal example, should the generic node have the labels and taints for the stateful and stateless services?

Expected Behavior

e.g. should the compute nodes use m5d.8xlarge instances rather than m5.8xlarge as is provided in the ha example tfvars file?

Actual Behavior

-

Additional Context

No response

References

https://aws.amazon.com/ec2/instance-types/

Code of Conduct

dhoucgitter commented 2 months ago

Hi @tomstarr, thanks for the question. Could you clarify or elaborate this sentence of your question, I'm confused as to what you are asking, thanks.

"Is it the intention of these examples that ephemeral disk is available not used for SASWORK and CASCACHE (minimal example) and SASWORK (ha example)?"

tomstarr commented 2 months ago

Hi @dhoucgitter, Thanks for the comment. What I was trying to understand was this project's choice/recommendation of AWS instances for CAS and Compute node pools in the 'minimal' and 'ha' example tfvars files. https://github.com/sassoftware/viya4-iac-aws/blob/main/examples/sample-input-minimal.tfvars https://github.com/sassoftware/viya4-iac-aws/blob/main/examples/sample-input-ha.tfvars

The 'minimal' example uses: CAS: r5.xlarge (no ephemeral disk included with this instance type) Compute/Generic: m5.2xlarge (no ephemeral disk included with this instance type)

The 'ha' example uses: CAS: i3.8xlarge (includes 4 x 1900[GB] NVMe SSD of emphermal disk) Compute: m5.8xlarge (no ephemeral disk included with this instance type)

(Reference - https://aws.amazon.com/ec2/instance-types/)

Does this help to clarify my query?

Thanks.