Connect to bash inside running ECS container by cluster and service name

README.md

Connect to ECS container

Requires

• aws-cli - https://aws.amazon.com/cli/
• jq - https://stedolan.github.io/jq/

Configure path to your ECS SSH key file ~/.bashrc

echo 'export ECS_PEM_FILE=$HOME/docker.pem' >> ~/.bashrc
. ~/.bashrc

Run

ecs-console cluster-name service-name

ecs-console.sh

#!/bin/bash

CLUSTER=$1
SERVICE=$2

if [ -z "$CLUSTER" -o -z "$SERVICE" ]; then
  echo "Usage:"
  echo "ecs-console cluster-name service-name"
  exit 1
fi

TASK_ID=$( aws ecs list-tasks --cluster=$CLUSTER --service-name=$SERVICE --output json | jq -r '.taskArns[0]' )
CONTAINER_INSTANCE_ID=$( aws ecs describe-tasks --cluster=$CLUSTER --tasks $TASK_ID --output json | jq -r '.tasks[0].containerInstanceArn' )
EC2_INSTANCE=$( aws ecs describe-container-instances --cluster=staging --container-instances $CONTAINER_INSTANCE_ID --output json | jq -r '.containerInstances[0].ec2InstanceId' )
EC2_IP=$( aws ec2 describe-instances --instance-ids $EC2_INSTANCE --output json | jq -r '.Reservations[0].Instances[0].PublicIpAddress' )

echo Connecting to: $EC2_IP

ssh -i $ECS_PEM_FILE ec2-user@$EC2_IP -t 'bash -c "docker exec -it $( docker ps -a -q -f name=ecs-'$SERVICE' | head -n 1 ) bash"'

It doesn't if json is not a default output format. Add --output json parameter to all aws commands.

EC2_INSTANCE=$( aws ecs describe-container-instances --cluster=staging --container-instances $CONTAINER_INSTANCE_ID --output json | jq -r '.containerInstances[0].ec2InstanceId' )
should be
EC2_INSTANCE=$( aws ecs describe-container-instances --cluster=$CLUSTER --container-instances $CONTAINER_INSTANCE_ID --output json | jq -r '.containerInstances[0].ec2InstanceId' )

On line 14 you have --cluster=staging it should be --cluster=$CLUSTER
Also I changed line 15 from PublicIpAddress to PrivateIpAddress as not all servers will have a public IP
Cool script, thanks for sharing!