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generate-release-vars.sh
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generate-release-vars.sh
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#!/usr/bin/env bash
set -eo pipefail
usage() {
echo "Usage:"
echo " $0 AMI_TYPE"
echo "Example:"
echo " $0 al2"
echo "AMI_TYPE Must be one of: al1, al2, al2023"
}
error() {
local msg="$1"
echo "ERROR: $msg"
usage
exit 1
}
readonly ami_type="$1"
if [ -z "$ami_type" ]; then
error "AMI_TYPE must be provided"
fi
readonly ami_version=$(date +"%Y%m%d")
# this can be any region, as we use it to grab the latest AL2 AMI name so it should be the same across regions.
readonly region="us-west-2"
# Get the latest source AMI names (based on type)
case "$ami_type" in
"al1")
# AL1
ami_id_al1=$(aws ssm get-parameters --region "$region" --names /aws/service/ami-amazon-linux-latest/amzn-ami-minimal-hvm-x86_64-ebs --query 'Parameters[0].[Value]' --output text)
ami_name_al1=$(aws ec2 describe-images --region "$region" --owner amazon --image-id "$ami_id_al1" --query 'Images[0].Name' --output text)
readonly ami_name_al1
readonly ecs_version_al1=$(sed -n '/variable "ecs_version_al1" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly docker_version_al1=$(sed -n '/variable "docker_version_al1" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly exec_ssm_version=$(sed -n '/variable "exec_ssm_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
cat >|release-al1.auto.pkrvars.hcl <<EOF
ami_version_al1 = "$ami_version"
ecs_version_al1 = "$ecs_version_al1"
docker_version_al1 = "$docker_version_al1"
exec_ssm_version = "$exec_ssm_version"
source_ami_al1 = "$ami_name_al1"
EOF
;;
"al2")
# AL2
ami_id_al2_x86=$(aws ssm get-parameters --region "$region" --names /aws/service/ami-amazon-linux-latest/amzn2-ami-minimal-hvm-x86_64-ebs --query 'Parameters[0].[Value]' --output text)
ami_name_al2_x86=$(aws ec2 describe-images --region "$region" --owner amazon --image-id "$ami_id_al2_x86" --query 'Images[0].Name' --output text)
ami_id_al2_arm=$(aws ssm get-parameters --region "$region" --names /aws/service/ami-amazon-linux-latest/amzn2-ami-minimal-hvm-arm64-ebs --query 'Parameters[0].[Value]' --output text)
ami_name_al2_arm=$(aws ec2 describe-images --region "$region" --owner amazon --image-id "$ami_id_al2_arm" --query 'Images[0].Name' --output text)
ami_id_al2_kernel5dot10=$(aws ssm get-parameters --region "$region" --names /aws/service/ami-amazon-linux-latest/amzn2-ami-minimal-hvm-x86_64-ebs --query 'Parameters[0].[Value]' --output text)
ami_name_al2_kernel5dot10=$(aws ec2 describe-images --region "$region" --owner amazon --image-id "$ami_id_al2_x86" --query 'Images[0].Name' --output text)
ami_id_al2_kernel5dot10arm=$(aws ssm get-parameters --region "$region" --names /aws/service/ami-amazon-linux-latest/amzn2-ami-minimal-hvm-arm64-ebs --query 'Parameters[0].[Value]' --output text)
ami_name_al2_kernel5dot10arm=$(aws ec2 describe-images --region "$region" --owner amazon --image-id "$ami_id_al2_arm" --query 'Images[0].Name' --output text)
readonly ami_name_al2_kernel5dot10arm ami_name_al2_kernel5dot10 ami_name_al2_arm ami_name_al2_x86
readonly ecs_agent_version=$(sed -n '/variable "ecs_agent_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly ecs_init_rev=$(sed -n '/variable "ecs_init_rev" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly docker_version=$(sed -n '/variable "docker_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly containerd_version=$(sed -n '/variable "containerd_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly runc_version=$(sed -n '/variable "runc_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly exec_ssm_version=$(sed -n '/variable "exec_ssm_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
cat >|release-al2.auto.pkrvars.hcl <<EOF
ami_version_al2 = "$ami_version"
ecs_agent_version = "$ecs_agent_version"
ecs_init_rev = "$ecs_init_rev"
docker_version = "$docker_version"
containerd_version = "$containerd_version"
runc_version = "$runc_version"
exec_ssm_version = "$exec_ssm_version"
source_ami_al2 = "$ami_name_al2_x86"
source_ami_al2arm = "$ami_name_al2_arm"
source_ami_al2kernel5dot10 = "$ami_name_al2_kernel5dot10"
source_ami_al2kernel5dot10arm = "$ami_name_al2_kernel5dot10arm"
EOF
;;
"al2023")
# AL2023
ami_id_al2023_x86=$(aws ssm get-parameters --region "$region" --names /aws/service/ami-amazon-linux-latest/al2023-ami-minimal-kernel-default-x86_64 --query 'Parameters[0].[Value]' --output text)
ami_name_al2023_x86=$(aws ec2 describe-images --region "$region" --owner amazon --image-id "$ami_id_al2023_x86" --query 'Images[0].Name' --output text)
kernel_version_al2023_x86=$(grep -o -e "-kernel-[1-9.]*" <<<"$ami_name_al2023_x86")
# AL2023 ARM
ami_id_al2023_arm=$(aws ssm get-parameters --region "$region" --names /aws/service/ami-amazon-linux-latest/al2023-ami-minimal-kernel-default-arm64 --query 'Parameters[0].[Value]' --output text)
ami_name_al2023_arm=$(aws ec2 describe-images --region "$region" --owner amazon --image-id "$ami_id_al2023_arm" --query 'Images[0].Name' --output text)
kernel_version_al2023_arm=$(grep -o -e "-kernel-[1-9.]*" <<<"$ami_name_al2023_arm")
# Get the latest AL2023 distribution release
# Ref: https://docs.aws.amazon.com/linux/al2023/ug/managing-repos-os-updates.html
# xmllint is required to find the latest distribution release from releasemd.xml in us-west-2
distribution_release_al2023=$(curl -s https://al2023-repos-us-west-2-de612dc2.s3.dualstack.us-west-2.amazonaws.com/core/releasemd.xml | xmllint --xpath "string(//root/releases/release[last()]/@version)" -)
readonly ami_name_al2023_x86 ami_name_al2023_arm distribution_release_al2023
readonly ecs_agent_version=$(sed -n '/variable "ecs_agent_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly ecs_init_rev=$(sed -n '/variable "ecs_init_rev" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly docker_version_al2023=$(sed -n '/variable "docker_version_al2023" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly containerd_version_al2023=$(sed -n '/variable "containerd_version_al2023" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly runc_version_al2023=$(sed -n '/variable "runc_version_al2023" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
readonly exec_ssm_version=$(sed -n '/variable "exec_ssm_version" {/,/}/p' variables.pkr.hcl | grep "default" | awk -F '"' '{ print $2 }')
cat >|release-al2023.auto.pkrvars.hcl <<EOF
ami_version_al2023 = "$ami_version"
ecs_agent_version = "$ecs_agent_version"
ecs_init_rev = "$ecs_init_rev"
docker_version_al2023 = "$docker_version_al2023"
containerd_version_al2023 = "$containerd_version_al2023"
runc_version_al2023 = "$runc_version_al2023"
exec_ssm_version = "$exec_ssm_version"
source_ami_al2023 = "$ami_name_al2023_x86"
source_ami_al2023arm = "$ami_name_al2023_arm"
kernel_version_al2023 = "$kernel_version_al2023_x86"
kernel_version_al2023arm = "$kernel_version_al2023_arm"
distribution_release_al2023 = "$distribution_release_al2023"
EOF
;;
*)
error "Incorrect AMI Selection"
;;
esac