README.md

Terraform Module: Cloudwatch

Create a cloudwatch dashboard that consist of the following resources' metrics:

1. ECS Cluster
2. Database
3. Elasticache

It also create cloudwatch alarms that monitor on the above metrics and notify Slack when the alarm turn into ALARM or OK state

Usage

module "cloudwatch" {
  source = "github.com/dbl-works/terraform//cloudwatch?ref=v2021.07.05"

  # Required
  region                         = "eu-central-1"
  project                        = "facebook"
  environment                    = "production"
  cluster_names                  = ["project-cluster"]
  database_identifiers           = ["project-database"]
  alb_arn_suffixes               = ["app/project/123456789"]
  elasticache_cluster_names      = ["project-elasticache"]
  # https://aws.amazon.com/rds/instance-types/
  db_instance_class_memory_in_gb = 1
  db_allocated_storage_in_gb     = 100

  # optional
  enable_container_insights = true
  custom_metrics           = [
    {
      "height" : 4,
      "width" : 4,
      "type" : "metric",
      "properties" : {
        "title" : "Average Response Time",
        "view" : "singleValue",
        "sparkline" : true,
        "metrics" : [
          ["AWS/ApplicationELB", "TargetResponseTime", "LoadBalancer", "app/project/123456789", { "label" : "app/project/123456789" }]
        ],
        "region" : "eu-central-1"
      }
    }
  ]
  dashboard_name           = "facebook"
  metric_period            = 60
  alarm_period             = 120
  alarm_evaluation_periods = 1
  db_is_read_replica       = true
  sns_topic_arns           = ["arn:aws:sns:eu-central-1:1XXXXXXXXXXX:first-sns-topic"] # Required if user want to publish message to the SNS when alarm is in alarm state
  datapoints_to_alarm      = 10
}