build

#!/bin/bash -e

# usage: ./build.sh ubuntu16

function usage(){
  echo -e "You must specify an AMI type to build and a build subnet:\n\tUbuntu 16.04: './build ubuntu16 subnet-999999'\n\tUbuntu 18.04: './build ubuntu18 subnet-999999'\n\tAmazon Linux 2: './build al2 subnet-999999'"
}

if [ $# -ne 3 ]; then
  usage
  exit 1
fi

AMI_TYPE="$1"
KUBERNETES_VERSION="1.15.10"
KUBERNETES_BUILD_DATE="2020-02-22"
SUBNET_ID="$2"
INSTANCE_TYPE="m4.large"
ARCH="x86_64"
TEMPORARY_SG_SOURCE_CIDRS="$3"

#These are all us-west-2 AMIs
case "$AMI_TYPE" in
  ubuntu16)
    OS="ubuntu"
    VERSION="16.04"
    AMI_OWNER=099720109477
    AMI_NAME_MATCH='ubuntu-minimal/images/hvm-ssd/ubuntu-xenial*'
    SSH_USER="ubuntu"
    ;;
  ubuntu18)
    OS="ubuntu"
    VERSION="18.04"
    AMI_OWNER=099720109477
    AMI_NAME_MATCH='ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-*'
    DOCKER_VERSION="5:18.09.9~3-0~ubuntu-bionic"
    SSH_USER="ubuntu"
    ;;
  al2)
    OS="al2"
    VERSION="2"
    AMI_OWNER=137112412989
    AMI_NAME_MATCH='amzn2-ami-minimal-hvm-*'
    SSH_USER="ec2-user"
    ;;
  *)
    usage
    exit 1
esac


SOURCE_AMI_ID=$(aws ec2 describe-images --filters Name=virtualization-type,Values=hvm Name=root-device-type,Values=ebs Name=name,Values=${AMI_NAME_MATCH} Name=architecture,Values=x86_64 Name=state,Values=available --query 'max_by(Images[], &CreationDate).ImageId' | tr -d '"')

echo "Building with ami $SOURCE_AMI_ID"

##Replace variables in template with ones set above
sed 's|\${OS}|'$OS'|; s|\${VERSION}|'$VERSION'|;' eks-worker.tpl > eks-worker.json

#Run packer build
packer build -var docker_version=$DOCKER_VERSION -var arch=$ARCH -var kubernetes_build_date=$KUBERNETES_BUILD_DATE -var instance_type=$INSTANCE_TYPE -var kubernetes_version=$KUBERNETES_VERSION -var ssh_user=$SSH_USER -var source_ami_id=$SOURCE_AMI_ID -var subnet_id=$SUBNET_ID -var temporary_sg_source_cidrs=${TEMPORARY_SG_SOURCE_CIDRS} eks-worker.json