Script to fetch current Docker version from all AWS ECS instances

aws-ecs-get-docker-version.py

#!/usr/bin/env python3

import boto3
import sys
import re
ecs = boto3.client('ecs')

sys.argv.pop(0)
clusters=[]+sys.argv
if len(clusters) == 0:
  arn_killer = re.compile(".*/")
  print("No arguments given, checking all clusters...")
  cluster_arns = ecs.list_clusters()
  for cluster_arn in cluster_arns['clusterArns']:
    clusters.append(arn_killer.sub("",cluster_arn))

for cluster in clusters:
  response = ecs.list_container_instances(cluster=cluster)
  response = ecs.describe_container_instances(cluster=cluster,containerInstances=response['containerInstanceArns'])
  print(f'Docker versions for cluster: {cluster}')
  for instance in response['containerInstances']:
    print(f"{instance['ec2InstanceId']}: {instance['versionInfo']['dockerVersion']}")