Autoscale Ejabberd Cluster in AWS

ejabberd_scaling.sh

#!/bin/bash

REGION="ap-southeast-1"
get_ip=$(curl -s curl http://169.254.169.254/latest/meta-data/local-ipv4)
echo "Node IP : $get_ip"

sudo sed -i "s/INET_DIST_INTERFACE=.*/INET_DIST_INTERFACE={$get_ip}/g" /opt/ejabberd/conf/ejabberdctl.cfg
sudo sed -i "s/ERLANG_NODE=ejabberd@.*/ERLANG_NODE=ejabberd@$get_ip/g" /opt/ejabberd/conf/ejabberdctl.cfg
sudo rm -rf /opt/ejabberd/database/*
export HOME=/root
echo $HOME

sudo systemctl start ejabberd.service
sleep 10
echo "...............Restarted.........................."

asg_ip=($(aws autoscaling describe-auto-scaling-instances --region $REGION --output text \
--query "AutoScalingInstances[?AutoScalingGroupName=='Prod-Ejabberd-ASG'].InstanceId" \
| xargs -n1 aws ec2 describe-instances --instance-ids $ID --region $REGION \
--query "Reservations[].Instances[].PrivateIpAddress" --output text))

echo "All Nodes are: ${asg_ip[@]}"
if [ ${#asg_ip[@]} -eq 1 ]; then
    echo "|INFO|: Single Node found in ASG >> ${#asg_ip[@]}"
else
    echo "Node IP :$get_ip is found in All Nodes..."
    delete=($get_ip)
    for target in "${delete[@]}"; do
        for i in "${!asg_ip[@]}"; do
            if [[ ${asg_ip[i]} = $target ]]; then
            unset 'asg_ip[i]'
            echo "|INFO|: Joining to >> ejabberd@${asg_ip[0]}"
            sudo /opt/ejabberd-19.05/bin/ejabberdctl join_cluster ejabberd@${asg_ip[0]}
            echo "......................Joined..........................."
            fi
        done
    done
fi