MongoDB Administration

Install and configure MongoDB on Linux/CentOS, including repository setup and preparing user and host details. Start the daemon, verify it runs on port 27017, and review monitoring options.

Learn how to disable huge pages after installation, restart the system, and verify the change in your environment, while noting warnings and default settings.

Learn to create databases and collections in MongoDB, switch databases, insert diverse documents, and verify collections and data with the find operation, including on-the-fly collection creation and automatic object ids.

Learn how MongoDB indexes speed data retrieval, from the default _id index to creating single-field, composite, and unique indexes, and how to view, drop, and verify them.

Explore MongoDB CRUD operations by creating a movies collection, inserting documents, and querying, updating, and deleting single or multiple records with filters and acknowledgement.

Learn how to secure MongoDB by implementing authentication and authorization, create users in the admin database with appropriate roles, and enforce password best practices.

Explore built-in and administrative roles in MongoDB, including user admin, db admin, cluster admin, backup roles, and read permissions across databases, excluding local and config, with emphasis on privilege scope.

Learn to create user-defined and built-in roles in MongoDB, grant privileges on databases and the movies collection (read, insert, and lead), and assign roles to users.

Learn how to assign and update user roles in MongoDB, granting read and write privileges, validating with authentication, and revoking access to keep databases secure.

Explore dropping users in MongoDB administration by managing users and roles in the admin database. Create, assign, and revoke privileges using built-in and custom roles, and monitor activity.

Explore MongoDB storage engines, including the two options with WiredTiger as the default and recommended engine, and how it manages data storage across memory and disk with snappy compression.

The in-memory storage engine stores data in memory rather than disk, delivering faster data retrieval; configure it at connection time and beware data loss on termination.

Explore how MongoDB auditing tracks database and user session activities, including schema changes and authentication. Enable auditing at server or database level and choose formats like JSON or syslog.

Explore MongoDB server administration, configure dbpath, log files, and port numbers, manage background processes, run multiple instances with different ports, and use the admin database for replica set operations.

Discover MongoDB backup and recovery with mongoexport, mongoimport, mongodump, and mongorestore. Learn when to export a single collection versus database backups, output formats, and key options like drop and upsert.

Learn to back up and restore MongoDB data using mongodump and mongorestore, including single database or entire server, with options for drop, include/exclude collections, and handling metadata and binary data.

Perform a database refresh by exporting a single MongoDB database with dump, then restoring it under a new name on a separate port, validating the restored collections.

Explore how MongoDB replica sets enable high availability by maintaining a primary with multiple secondaries, automatic failover, and voting rules, including Atlas defaults and member limitations.

Configure a three-node replica set by running multiple mongod processes on different ports and creating data directories. Initiate the replica set, verify status, and connect to primary and secondary nodes.