MongoDB Database Monitoring - NoSQL Performance & Query Optimization

Monitor MongoDB databases with comprehensive MongoDB database monitoring for collecting MongoDB performance metrics, NoSQL database metrics, and query performance data. This guide provides step-by-step instructions to collect and monitor MongoDB metrics using OpenTelemetry Collector Contrib for MongoDB database performance monitoring and NoSQL database observability.

Overview

Monitor MongoDB effectively with comprehensive MongoDB monitoring using the OpenTelemetry Collector with the MongoDB receiver. This MongoDB monitoring setup allows you to collect database metrics from MongoDB instances, monitor NoSQL database performance, visualize MongoDB performance data, and respond proactively to database issues.

Supported MongoDB versions: 4.0+.

Steps to Integrate

Prerequisites

• Running MongoDB instance(s)
• OpenObserve account (Cloud or Self-Hosted)

Step 1: Install OpenTelemetry Collector Contrib

Download and install the latest release of otelcol-contrib:

curl --proto '=https' --tlsv1.2 -fOL https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/v0.115.1/otelcol-contrib_0.115.1_darwin_arm64.tar.gz
tar -xvf otelcol-contrib_0.115.1_darwin_arm64.tar.gz
sudo mv otelcol-contrib /usr/local/bin/
otelcol-contrib --version

Replace v0.115.1 with the latest version for your OS/architecture.

Step 2: Configure the Collector

Create a file named config.yaml with the following configuration:

receivers:
mongodb:
    hosts:
    - endpoint: localhost:27017
    username: otel #the user with clusterMonitor permissions
    password: password123 #password
    collection_interval: 60s
    initial_delay: 1s
    tls:
    insecure: true
    insecure_skip_verify: true

processors:
batch:
    send_batch_size: 10000
    timeout: 10s

exporters:
otlphttp/openobserve:
    endpoint: https://<your-openobserve-endpoint>/api/default
    headers:
    Authorization: Basic <your_auth_token>
    stream-name: default

service:
pipelines:
    metrics:
    receivers: [mongodb]
    processors: [batch]
    exporters: [otlphttp/openobserve]

Replace <your-openobserve-endpoint> and <your_auth_token> with your actual OpenObserve API endpoint and authentication token, which you can find in your Data Sources -> Databases -> MongoDB

Step 3: Run the Collector

Start the Collector with your configuration:

otelcol-contrib --config /path/to/config.yaml

Step 4: Visualize in OpenObserve

1. Open OpenObserve → Streams. Select your metrics stream .
2. Explore MongoDB metrics in dashboards or create custom queries.

Troubleshooting

Authentication Errors

• Double-check username/password in config.

Connection Refused

• Verify MongoDB is running and accessible on the specified port.
• Check firewall or container networking settings.

TLS Issues

• If using TLS, configure valid certs.
• Use tls.insecure_skip_verify: true for testing only.

No Metrics in OpenObserve

• Check Collector logs for errors.
• Confirm endpoint and Authorization headers in the exporter are correct.
• Verify OpenObserve is reachable from the Collector.