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MongoDB High Availability by Afshin Mehrabani

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Diagnostic tools

One of the important tools of a database system is diagnostic tools. Fortunately, MongoDB has built-in diagnostic tools that enable developers to diagnose the server or get a brief report from the system.

We have the following utilities placed in this group:

  • mongostat
  • mongotop
  • mongosniff
  • mongoperf

In the next sections, you can read a brief description of each utility.

Learning about mongostat

This tool produces a brief summary of relevant statistics of the currently running MongoDB instances, either the mongod or mongos instance.

The following screenshot illustrates the output of this tool:

Learning about mongostat

The preceding screenshot shows you the number of ...

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