db.hostInfo()

  • db.hostInfo()
  • Returns a document with information about the underlying systemthat the mongod or mongos runs on. Some of thereturned fields are only included on some platforms.

db.hostInfo() provides a helper in the mongoshell around the hostInfo The output ofdb.hostInfo() on a Linux system will resemble thefollowing:

  1. {
  2.    "system" : {
  3.           "currentTime" : ISODate("<timestamp>"),
  4.           "hostname" : "<hostname>",
  5.           "cpuAddrSize" : <number>,
  6.           "memSizeMB" : <number>,
  7.           "memLimitMB" : <number>,  // Available starting in MongoDB 4.0.9 (and 3.6.13)
  8.           "numCores" : <number>,
  9.           "cpuArch" : "<identifier>",
  10.           "numaEnabled" : <boolean>
  11.    },
  12.    "os" : {
  13.           "type" : "<string>",
  14.           "name" : "<string>",
  15.           "version" : "<string>"
  16.    },
  17.    "extra" : {
  18.           "versionString" : "<string>",
  19.           "libcVersion" : "<string>",
  20.           "kernelVersion" : "<string>",
  21.           "cpuFrequencyMHz" : "<string>",
  22.           "cpuFeatures" : "<string>",
  23.           "pageSize" : <number>,
  24.           "numPages" : <number>,
  25.           "maxOpenFiles" : <number>
  26.    },
  27.    "ok" : <return>
  28. }

See hostInfo for full documentation of the output ofdb.hostInfo().