AWS CloudWatch

You can use the metrics for monitoring and to drive auto-scaling through alerts.

Caution: Exporting custom metrics may incur significant Monitoring costs. Please review Amazon’s CloudWatch pricing. By default no metrics are exported; change that using --enable_cloudwatch and --cloudwatch_metrics_filter .

Configuration

1. Make sure the IAM account has these permissions:

   "Action": [
       "cloudwatch:PutMetricData"
   ],
   

2. Update the service configuration.

   For example:

   --enable_cloudwatch=true
   --cloudwatch_region=eu-central-1
   --cloudwatch_namespace=Engflow
   --cloudwatch_metrics_filter=used_executors
   

   See the --cloudwatch_* flags for details.

3. Update the cluster.

   terraform apply
   

Reducing costs

With --cloudwatch_metrics_filter you can select exactly which metrics are exported. (By default no metric is exported.) Reporting more metrics may increase your monitoring bill; consult the AWS CloudWatch pricing page.