awless : Create a load balanced web app

awless load balanced web app.md

awless template for a load balanced web app

env.sh

#!/usr/bin/env bash
set -ex

AWS_DEFAULT_REGION=xxxx
AWS_DEFAULT_PROFILE=xxxx

awless config set aws.region ${AWS_DEFAULT_REGION}
awless config set aws.profile ${AWS_DEFAULT_PROFILE}

SCRIPT_HOME=/home/xxxx/awless
DATA_HOME=/home/xxxx/data

AZ_1="xxxx"
AZ_2="xxxx"

function join_by { local IFS="$1"; shift; echo "$*"; }

web_component.sh

#!/usr/bin/env bash

source ../env.sh

keypair=""
vpc=""
lb_subnets="@subnet_lb,@subnet_lb_2"
certificate=""

declare -a names=()
declare -a vm_subnets=()
declare -a images=()

## now loop through the above array
for i in ${!names[*]}; do
    echo "Creating load balanced environment for ---> ${names[${i}]} "

    awless run ${SCRIPT_HOME}/web_components.aws name=${names[${i}]} vpcid=${vpc} vm_subnet=${vm_subnets[${i}]} \
         lb_subnets=${lb_subnets} keypair=${keypair} image=${images[${i}]} certificate=${certificate} 
done

web_components.aws

# Create Target Group
tg = create targetgroup name={name}-tg port=443  protocol=HTTPS vpc={vpcid}

# Create Load Balancer
lb = create loadbalancer name={name}-lb subnets={lb_subnets} iptype=ipv4 scheme=internet-facing

# Create Listener to link lb, tg and certificate
lstnr = create listener actiontype=forward loadbalancer=$lb port=443  protocol=HTTPS targetgroup=$tg certificate={certificate} sslpolicy=ELBSecurityPolicy-2016-08

# Create an EC2 instance
inst = create instance image={image} keypair={keypair} type=m4.large subnet={vm_subnet} name={name}

# Wait for the instance
check instance id=$inst state=running timeout=180

# Attach instance to target group
attach instance id=$inst targetgroup=$tg port=443