Monitoring MongoDB Performance with MMS

Learn how to use the MongoDB Monitoring Service (MMS) to track and analyze the performance of your MongoDB databases, ensuring optimal operation and troubleshooting potential issues.

Prerequisites

Before you begin, make sure you have the following prerequisites:

• An active MongoDB deployment that you want to monitor.
• An MMS account. You can sign up for MMS at https://www.mongodb.com/cloud/atlas.

1. Setting Up MMS

Sign in to your MMS account and set up your monitoring environment:

1. Create a new project in MMS for your MongoDB deployment.
2. Install the MMS Agent on your MongoDB servers to collect performance data.
3. Configure the agent to report data to your MMS project.

Sample code snippets for agent installation:

# Download the MMS Agent installer
wget https://mms.mongodb.com/download/agent/automation/mongodb-mms-automation-agent-manager_latest_amd64.deb
# Install the agent
dpkg -i mongodb-mms-automation-agent-manager_latest_amd64.deb
# Configure the agent
echo "mmsGroupId=YOUR_MMS_GROUP_ID" >> /etc/mongodb-mms/automation-agent.config
echo "mmsApiKey=YOUR_MMS_API_KEY" >> /etc/mongodb-mms/automation-agent.config
service mongodb-mms-automation-agent restart
        

2. Viewing Performance Metrics

Access your MMS project to view performance metrics and charts, including database operations, system health, and query performance. Identify potential issues and areas for optimization.

3. Alerting and Automation

Set up alerts based on performance thresholds in MMS to receive notifications when issues occur. You can also create automation tasks for common operations.

# Create an alert for high CPU usage
db.runCommand({
   setParameter: 1,
   mms: {
      alert: {
         host: "localhost",
         threshold: 90,
         metric: "CPU_USER"
      }
   }
});
        

4. Capacity Planning

Use MMS data to plan for future capacity needs and optimize resource allocation for your MongoDB deployment.

Conclusion

You've learned how to monitor MongoDB performance with MMS, including setting up MMS, viewing performance metrics, alerting, and capacity planning. MMS provides valuable insights into your MongoDB deployment, helping you maintain optimal performance.