Скачать или смотреть monitoring for mongodb mongodb performance and health check

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monitoring mongodb performance and health is essential to ensure your database runs efficiently and effectively. this tutorial will guide you through various methods to monitor mongodb, including built-in tools, metrics, and custom scripts. we’ll also provide code examples to help you get started.

1. understanding key metrics

before diving into monitoring, here are some essential metrics to keep an eye on:

**operation counts**: number of read and write operations.
**memory usage**: ram usage by mongodb.
**disk i/o**: read and write operations on the disk.
**database locks**: lock wait times and lock counts.
**replication lag**: time delay between primary and secondary replicas.
**connections**: number of active connections to the database.
**query performance**: execution time of queries.

2. using mongodb monitoring tools

mongodb provides several built-in tools for monitoring:

**mongodb atlas**: cloud-based monitoring with dashboards and alerts.
**mongodb compass**: gui tool that provides performance metrics.
**mongostat**: command-line tool that provides real-time statistics.
**mongotop**: command-line tool for tracking read and write activity.

example: using `mongostat` and `mongotop`

you can use the following commands in your terminal:





3. monitoring with the mongodb shell

you can use the mongodb shell to query various statistics directly.

example: using mongodb shell



4. using mongodb database profiler

the database profiler can provide insights into the performance of your queries.

enable profiling

you can enable profiling for a specific database or collection:



view profiling data

after enabling profiling, you can view the data collected:



5. setting up alerts

if you're using mongodb atlas, you can set up alerts to be notified when certain thresholds are met, such as high cpu usage or increased latency.

1. go to the *alerts* section in your mongodb atlas dashboard.
2. click on **create alert**.
3. choos ...

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