Rocky8 Linux AWS Compute Nodes

[GMW99]

This pull request makes Rocky8 Linux the Source AMI for the compute nodes on AWS.

Associated issue: #121

Changes include:

• Changing the AMI to the community support Rocky8 as specified here: https://forums.rockylinux.org/t/rocky-linux-official-aws-ami/3049/25
• Changing the ssh name for compute nodes
• Changing the AWS instance type to micro such that packer can run
• Adding kernel-devel and headers as the default install so the Nvidia driver can be installed properly following current documentation.

After adding:

if [[ $(arch) == "x86_64" ]]; then
  sudo dnf config-manager --add-repo https://developer.download.nvidia.com/compute/cuda/repos/rhel8/x86_64/cuda-rhel8.repo
  sudo dnf module install -y nvidia-driver:latest-dkms
fi

as per the documentation and running sudo /usr/local/bin/run-packer

This is the resulting compute node output from

#! /bin/bash

hostname
cat /etc/os-release
nvidia-smi -q | head

Output:

NAME="Rocky Linux"
VERSION="8.6 (Green Obsidian)"
ID="rocky"
ID_LIKE="rhel centos fedora"
VERSION_ID="8.6"
PLATFORM_ID="platform:el8"
PRETTY_NAME="Rocky Linux 8.6 (Green Obsidian)"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:rocky:rocky:8:GA"
HOME_URL="https://rockylinux.org/"
BUG_REPORT_URL="https://bugs.rockylinux.org/"
ROCKY_SUPPORT_PRODUCT="Rocky Linux"
ROCKY_SUPPORT_PRODUCT_VERSION="8"
REDHAT_SUPPORT_PRODUCT="Rocky Linux"
REDHAT_SUPPORT_PRODUCT_VERSION="8"

==============NVSMI LOG==============

Timestamp                                 : Thu May 26 11:42:20 2022
Driver Version                            : 515.43.04
CUDA Version                              : 11.7

Attached GPUs                             : 1
GPU 00000000:00:1E.0
    Product Name                          : Tesla T4```