For checking the status of a MongoDB instance, you can use the mongostat command. mongostat provides real-time performance statistics for the MongoDB server, including the number of insertions, queries, updates, and deletions, current connection count, and available memory.
Additionally, you can use the db.serverStatus() method via the MongoDB shell. This command returns detailed server status, including hardware usage, database operation statistics, and network information.
Another approach is to use the monitoring tools provided by MongoDB Atlas if your database is hosted on MongoDB Atlas. These tools offer a visual interface for more intuitive monitoring of various performance metrics of the database.