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Azure Monitor
An Azure service that is used to collect, analyze, and act on telemetry data from Azure and on-premises environments.
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Hello I hope you are doing well Ryan T
You can follow this official Guide https://free.blessedness.top/en-us/azure/azure-monitor/alerts/alerts-create-rule-cli-powershell-arm
PowerShell Script to Create a VM Metric Alert
This script will first create an Action Group (which defines what happens when an alert is triggered, e.g., send an email) and then create the Metric Alert Rule for the Virtual Machine.
Prerequisites
Azure PowerShell Az Module: Ensure you have the Az module installed and the Az.Monitor component is available.
PowerShell
Install-Module
Authenticate: Log in to your Azure account.
PowerShell
Connect-AzAccount
Required Information: You'll need the following values:
$ResourceGroupName: The name of the resource group where your VM is located.
`$VMName`: The name of your Virtual Machine.
`$AlertRuleName`: A unique name for your alert rule.
`$ActionGroupName`: A name for the Action Group.
`$EmailAddress`: The email address to receive notifications.
Example Script: High CPU Alert
PowerShell
# --- Configuration Variables ---
Key Components Explained
| Variable/Cmdlet | Purpose | Example Value for High CPU Alert |
|---|---|---|
| Get-AzVM | Retrieves the VM object to get its Resource ID. | $VM.Id |
Get-AzVM |
Retrieves the VM object to get its Resource ID. | $VM.Id |
Set-AzActionGroup |
Creates or updates the action group that defines the notification method (e.g., email, webhook, runbook). | $ActionGroupId |
New-AzMetricAlertRuleV2Criteria |
Defines the logic for the alert condition. | MetricName: "Percentage CPU", Threshold: 90, Operator: "GreaterThan" |
Add-AzMetricAlertRuleV2 |
Creates or updates the new metric alert rule. | -TargetResourceId: The ID of the VM. |
-WindowSize |
The period over which the metric data is evaluated. (e.g., PT5M for 5 minutes) |
"PT5M" |
-Frequency |
How often the alert should check the condition. (e.g., PT1M for 1 minute) |
"PT1M" |
-Severity |
The impact level of the alert (0 is highest). | 3 (Informational/Warning) |
Other Common Metrics
You can change the -MetricName in the New-AzMetricAlertRuleV2Criteria cmdlet for other common VM metrics:
| Metric for VM Host (Platform) | Description |
|---|---|
| Percentage CPU | Average CPU utilization. |
Percentage CPU |
Average CPU utilization. |
Network In Total |
Total bytes received on all network interfaces. |
Disk Read Bytes/sec |
Average number of bytes read from disk. |
Disk Write Bytes/sec |
Average number of bytes written to disk. |
For disk utilization and memory metrics from inside the OS (guest-level monitoring), you need to ensure the Azure Monitor Agent (AMA) is installed and configured to collect these metrics and send them to the Azure Monitor Metric database. If AMA is set up, common guest OS metrics for Windows/Linux are also available under the same process.
I hope this helps some information were organízate using AI.
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