AWS Alarm Rules

AWS Alarm Rules

Setup Guide

Configuring Alarm Rules for AWS

Set up alarms to be notified when your AWS resources exceed defined thresholds. Alarm rules are created centrally and can be attached to any individual monitored resource.

Overview

Cloudmon alarm rules work on a trigger model: you define a condition (the IF) and an action (the THEN). When the condition is met for the specified number of consecutive intervals, Cloudmon fires the alarm and executes the configured actions, such as sending a notification or running a script.

Alarm rules for AWS resources are created and configured in one place, then attached wherever needed:

  • Create the rule. Navigate to Settings → Configurations → Alarm Rules → Add and build the IF/THEN trigger: select a metric, set a threshold, and define what happens when it is breached.
  • Attach it to a resource. Navigate to Cloud → AWS → [Your AWS Account], open the relevant service (EC2 Instance, RDS Instance, or S3 Bucket), select the resource, and click its edit icon. Under Alert Settings, choose the rule from the Alarm Rule dropdown and click Save.

How To Configure Alarms

Each alarm rule is built around a simple IF/THEN model: select a metric, set a threshold, and define what happens when it's breached. This is done once when creating the rule under Settings → Configurations → Alarm Rules. Attaching that rule to one resource or to many is just a matter of selecting it from the Alarm Rule dropdown wherever it's needed. Learn more

Common Use Cases

Below are recommended alarm configurations for the most common AWS monitoring scenarios:

Use CaseMetricSuggested ThresholdWhy
EC2 high CPUCPU UtilisationAbove 90% for 1 intervalCatches instances under sustained heavy load before performance degrades
EC2 instance downStatus Check FailedAbove 0 for 1 intervalImmediately alerts when an instance fails a health check
RDS low storageFree Storage SpaceBelow 10% for 1 intervalPrevents database outages caused by running out of disk space
RDS high connectionsDatabase ConnectionsAbove limit for 2 intervalsDetects connection leaks or unusual application behaviour early
EC2 unexpected rebootSystem RebootIs detectedFlags unplanned reboots that could indicate instability or unauthorised activity
EC2 high network trafficNetwork In / Network OutAbove expected baselineIdentifies unusual traffic spikes that could indicate a security issue or misconfigured application

Viewing and Managing Triggers

All alarm rules, along with the triggers configured within them, are listed under Settings → Configurations → Alarm Rules. Each rule shows its name, severity, whether notifications are configured, and whether a script is set to run when triggered. You can edit or delete any rule at any time using the action icons on the right. To see which rule is currently attached to a specific AWS resource, open that resource's edit panel and check the Alarm Rule field under Alert Settings.


    • Related Articles

    • AWS Monitoring

      Amazon Web Services AWS Cloud Monitoring with Cloudmon Connect your AWS account once and get full visibility into your AWS services such as EC2 instances, RDS databases, and S3 buckets — with real-time metrics, smart alerts, and historical ...

    • Actions in AWS Monitoring

      Setup Guide Actions in AWS Monitoring Manage your connected AWS accounts: add a new account, edit configuration, re-run discovery, enable or disable monitoring, or remove an account entirely. Overview All account-level actions for AWS monitoring are ...

    • Azure Alarm Rules

      Setup Guide Configuring Alarm Rules for Azure Set up alarms to be notified when your Azure resources exceed defined thresholds. Alarm rules are created centrally and can be attached to any individual monitored resource. Overview Cloudmon alarm rules ...

    • How to Configure Alarm Rules

      Alarms How to Configure Alarm Rules Create and manage alarm rules for any monitored entity in Cloudmon. Define threshold-based triggers, configure notifications and automated remediation, associate rules to device groups, and manage default alarm ...

    • Configuring Alarm Rules for Plugins

      Server Monitoring Configuring Alarm Rules for Plugins Set up threshold-based alarms for any plugin running on your monitored servers or devices, so Cloudmon notifies your team or triggers automated remediation the moment a plugin metric or status ...