usage: check-aws.py [-h] -r
                    {af-south-1,ap-east-1,ap-northeast-1,ap-northeast-2,ap-northeast-3,ap-south-1,ap-southeast-1,ap-southeast-2,ca-central-1,eu-central-1,eu-north-1,eu-south-1,eu-west-1,eu-west-2,eu-west-3,me-south-1,sa-east-1,us-east-1,us-east-2,us-west-1,us-west-2}
                    [-u UNIT] -m METRIC -n NAMESPACE [-d [DIMENSIONS]]
                    [-p PROFILE]
                    [-s {Average,Sum,SampleCount,Maximum,Minimum}]
                    [-w WARNING] [-c CRITICAL] [-v] [-P [PERIOD]] [-D DELTA]
                    [-l LAG] [-C [CREDENTIALS_FILE]] [-f [CREDENTIALS_FILE]]

Plugin for monitoring AWS via CloudWatch

optional arguments:
  -h, --help            show this help message and exit
  -r {af-south-1,ap-east-1,ap-northeast-1,ap-northeast-2,ap-northeast-3,ap-south-1,ap-southeast-1,ap-southeast-2,ca-central-1,eu-central-1,eu-north-1,eu-south-1,eu-west-1,eu-west-2,eu-west-3,me-south-1,sa-east-1,us-east-1,us-east-2,us-west-1,us-west-2}, --region {af-south-1,ap-east-1,ap-northeast-1,ap-northeast-2,ap-northeast-3,ap-south-1,ap-southeast-1,ap-southeast-2,ca-central-1,eu-central-1,eu-north-1,eu-south-1,eu-west-1,eu-west-2,eu-west-3,me-south-1,sa-east-1,us-east-1,us-east-2,us-west-1,us-west-2}
                        AWS Region
  -u UNIT, --unit UNIT  Expected unit in the response
  -m METRIC, --metric METRIC
                        Metric name
  -n NAMESPACE, --namespace NAMESPACE
                        Service Namespace
  -d [DIMENSIONS], --dimensions [DIMENSIONS]
                        One or more Dimensions for selecting datapoints:
                        dimension=value[,dimension=value...]
  -p PROFILE, --profile PROFILE
                        Profile name from ~/.aws/credentials (default:
                        default)
  -s {Average,Sum,SampleCount,Maximum,Minimum}, --statistic {Average,Sum,SampleCount,Maximum,Minimum}
                        Statistic for evaluating metrics (default: Average)
  -w WARNING, --warning WARNING
                        Warning if threshold is outside range (default: 0)
  -c CRITICAL, --critical CRITICAL
                        Critical if threshold is outside range (default: 0)
  -v, --verbosity       Verbosity (use up to 3 times)
  -P [PERIOD], --period [PERIOD]
                        Period in seconds over which the statistic is applied
                        (default: 60)
  -D DELTA, --delta DELTA
                        Delta measurement in seconds
  -l LAG, --lag LAG     Delay in seconds to add to starting time (default: 0)
  -f [CREDENTIALS_FILE], --credentials_file [CREDENTIALS_FILE]
                        File containing AWS credentials

$ ./check-aws.py --metric TunnelState --namespace AWS/VPN -r eu-west-1 -w @0 -c @0 -d TunnelIpAddress=1.2.3.4

$ ./check-aws.py --metric FreeStorageSpace --namespace AWS/RDS -r eu-west-1 -w @5000000000 -c @3000000000

$ ./check-aws.py --metric CPUCreditUsage --namespace AWS/EC2 -r eu-west-1 -w 2 -c 3 -d InstanceId=i-0d7c12ec7asdf229

$ ./check-aws.py --metric CPUUtilization --namespace AWS/EC2 -r eu-west-1 -w 50 -c 70 -d InstanceId=i-0d7c44ec7eaad229

$ ./check_aws.py -d ClusterName=my-ecs-cluster,ServiceName=my-ecs-service --metric RunningTaskCount --namespace ECS/ContainerInsights -w 1 -c 2

$ pip install awscli

$ aws ec2 describe-instances --region eu-west-1