MongoDB Administration

Introduction to MongoDB Administration

MongoDB administration involves managing and maintaining MongoDB deployments, ensuring optimal performance, security, and reliability. This guide covers essential administration tasks, tools, and best practices.

MongoDB Administration

Key Areas of MongoDB Administration

Database Management

Database Operations

// Create database
use myDatabase

// List databases
show dbs

// Drop database
db.dropDatabase()

// Create collection
db.createCollection("users")

// List collections
show collections

User Management

// Create user
db.createUser({
    user: "admin",
    pwd: "password",
    roles: [
        { role: "userAdmin", db: "admin" },
        { role: "dbAdmin", db: "myDatabase" }
    ]
})

// List users
db.getUsers()

// Update user
db.updateUser("admin", {
    roles: [
        { role: "readWrite", db: "myDatabase" }
    ]
})

Monitoring & Maintenance

System Monitoring

  • Server status
  • Resource usage
  • Connection monitoring
  • Operation statistics
  • Performance metrics
// Server status
db.serverStatus()

// Current operations
db.currentOp()

// Database stats
db.stats()

Maintenance Tasks

  • Index maintenance
  • Data compaction
  • Log rotation
  • Cache management
  • Storage cleanup
// Compact collection
db.runCommand({ compact: "users" })

// Repair database
db.repairDatabase()

// Clean up unused indexes
db.collection.dropIndexes()

Backup & Recovery

Backup Strategies

  • MongoDB Dump (mongodump)
  • Filesystem snapshots
  • Continuous backup
  • Point-in-time recovery
  • Backup verification
# Create backup
mongodump --db myDatabase --out /backup

# Restore from backup
mongorestore --db myDatabase /backup/myDatabase

Recovery Procedures

  • Data recovery planning
  • Disaster recovery
  • Point-in-time recovery
  • Recovery testing
  • Documentation

Security Administration

Authentication

  • User authentication
  • Role-based access control
  • SSL/TLS configuration
  • Network security
  • Audit logging
// Enable authentication
security:
  authorization: enabled

// Configure SSL
net:
  ssl:
    mode: requireSSL
    PEMKeyFile: /etc/ssl/mongodb.pem

Security Best Practices

  • Regular security audits
  • Password policies
  • Network isolation
  • Encryption at rest
  • Security updates

Performance Tuning

Configuration Optimization

System Configuration

Optimize system settings for MongoDB performance

Memory Management

Configure memory settings for optimal performance

Storage Configuration

Optimize storage settings for better I/O performance

Monitoring Tools

  • MongoDB Compass
  • MongoDB Ops Manager
  • MongoDB Atlas
  • Third-party monitoring tools
  • Custom monitoring solutions

Best Practices

Administration Guidelines

  • Regular maintenance schedules
  • Documentation of procedures
  • Monitoring and alerting
  • Backup verification
  • Security audits

Common Pitfalls

  • Insufficient monitoring
  • Poor backup strategies
  • Security misconfigurations
  • Resource mismanagement
  • Lack of documentation

Next Steps

Now that you understand MongoDB administration, you can explore:

MongoDB Tutorial