Monitor AWS ECS Agent & restart agent automatically if any failure

awsecs-agent-monitor.sh

#!/bin/bash
set -e
source /etc/ecs/ecs.config
CONTAINERS_ID=$(aws ecs list-container-instances --cluster $ECS_CLUSTER --output text --query 'containerInstanceArns')
echo $(CONTAINERS_ID)
INSTANCE_ID=$(curl http://169.254.169.254/latest/meta-data/instance-id)
echo $(INSTANCE_ID)
DATE=$(date +%Y-%m-%d-%H:%M)
read -p "enter aws-account-id: " aws-account-id
read -p "enter SNS topic: " topic
TOPIC="arn:aws:sns:us-west-2:$aws-account-id:$topic-name"
echo $TOPIC
for container in $CONTAINERS_ID
do
STATUS=$(aws ecs describe-container-instances --container-instances $container --cluster $ECS_CLUSTER --output json --query 'containerInstances[0].agentConnected')
CHECK_INSTANCE_ID=$(aws ecs describe-container-instances --container-instances $container --cluster $ECS_CLUSTER --output text --query 'containerInstances[0].ec2InstanceId')
if [ $INSTANCE_ID == $CHECK_INSTANCE_ID ]
then
if [ $STATUS == "false" ]
then
echo "Agent Disconnected" $DATE >> /var/log/script.log
aws sns publish --message "AWS ECS Agent Failed $INSTANCE_ID $DATE" --topic $TOPIC
sudo stop ecs
sudo start ecs
else
echo "Agent Connected" $DATE >> /var/log/script.log
fi
fi
done