Monitoring

MongoDB Monitoring Built-in Monitoring Tools

bash

# MongoDB Shell monitoring commands
mongo --eval "db.serverStatus()"
mongo --eval "db.stats()"
mongo --eval "db.runCommand({top: 1})"
# Connection monitoring
mongo --eval "db.runCommand({currentOp: 1})"

Performance Metrics

javascript

// Key metrics to monitor
db.serverStatus().metrics.commands
db.serverStatus().connections
db.serverStatus().opcounters
db.serverStatus().wiredTiger.cache

Log Analysis

bash

# Monitor MongoDB logs
sudo tail -f /var/log/mongodb/mongod.log
# Parse slow queries
grep "slow operation" /var/log/mongodb/mongod.log

Third-party Monitoring

yaml

# Prometheus MongoDB Exporter
version: '3.8'
services:
  mongodb-exporter:
    image: percona/mongodb_exporter:0.40
    ports:
      - "9216:9216"
    environment:
      - MONGODB_URI=mongodb://localhost:27017
    command:
      - '--collect-all'
      - '--compatible-mode'