Docs Menu
Docs Home
MongoDB Manual
/ / /


On this page

  • Compatibility

Returns a document with information about the underlying system that the mongod or mongos runs on. Some of the returned fields are only included on some platforms.

db.hostInfo() provides a mongosh helper method around the hostInfo command. The output of db.hostInfo() on a Linux system will resemble the following:

"system" : {
"currentTime" : ISODate("<timestamp>"),
"hostname" : "<hostname>",
"cpuAddrSize" : <number>,
"memSizeMB" : <number>,
"memLimitMB" : <number>,
"numCores" : <number>,
"cpuArch" : "<identifier>",
"numaEnabled" : <boolean>
"os" : {
"type" : "<string>",
"name" : "<string>",
"version" : "<string>"
"extra" : {
"versionString" : "<string>",
"libcVersion" : "<string>",
"kernelVersion" : "<string>",
"cpuFrequencyMHz" : "<string>",
"cpuFeatures" : "<string>",
"pageSize" : <number>,
"numPages" : <number>,
"maxOpenFiles" : <number>
"ok" : <return>

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

This method is available in deployments hosted in the following environments:

  • MongoDB Atlas: The fully managed service for MongoDB deployments in the cloud


This command is not supported in M0, M2, and M5 clusters. For more information, see Unsupported Commands.


On this page