Migrate to Azure Monitor Agent from Legacy Log Analytics Agent

Introduction

The older logs Analytics Agent (OMS/MMA) will be deprecated by August 31st, 2024. All users and clients will need to migrate to an Azure Monitor-based agent. Here in this article, I discuss the steps to be followed to install the Azure Monitor Agent.

Setting Up Data Collection Rules (DCRs)

Navigate to Azure Monitor

Go to the Azure portal (portal.azure.com).
Click on Monitor in the left-hand menu.

Access Data Collection Rules

Under Settings, select Data Collection Rules.
Click on Create to create a new DCR.

Configure the DCR

On the Resource tab, add the relevant resources (e.g., virtual machines, Virtual Machine Scale Sets, or Azure Arc-enabled servers) to the DCR.
Specify the data sources you want to collect from these resources.
Define the destination where the collected data should be sent (usually a Log Analytics workspace).

Associating DCRs with Resources

For VMs, you can view and modify associations directly in the Azure portal.
The Azure portal will also install the Azure Monitor Agent on resources that don’t already have it installed.

Creating Data Collection Endpoints (DCEs)

Navigate to Data Collection Endpoints.
In the Azure portal, go to Settings and select Data Collection Endpoints.
Create a New Endpoint.
Click on Create to set up a new DCE.
Provide a Rule name, and specify the Subscription, Resource Group, and Region where the DCE will be created.

Adding Sources to Azure Monitoring Agent (AMA)

Once you’ve set up the DCR and DCE, the Azure Monitor Agent (AMA) will automatically collect data from the associated resources.
The AMA will send this data to the specified Log Analytics workspace.

Verify Data Collection

Check the Log Analytics workspace to ensure that the data from your sources is being collected and processed.
Do not forget to delete the older OMS/MMA log Analytics Agent from all the Sources that have been added to DCR.

Conclusion

Hope you had a great time reading this article and have learned to migrate from the MMA Log Analytics Agent to the Azure Monitor Agent.