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- isdbgrid
isdbgrid¶
- isdbgrid¶
This command verifies that a process is a mongos.
If you issue the isdbgrid command when connected to a mongos, the response document includes the isdbgrid field set to 1. The returned document is similar to the following:
{ "isdbgrid" : 1, "hostname" : "app.example.net", "ok" : 1 }
If you issue the isdbgrid command when connected to a mongod, MongoDB returns an error document. The isdbgrid command is not available to mongod. The error document, however, also includes a line that reads "isdbgrid" : 1, just as in the document returned for a mongos. The error document is similar to the following:
{ "errmsg" : "no such cmd: isdbgrid", "bad cmd" : { "isdbgrid" : 1 }, "ok" : 0 }
You can instead use the isMaster command to determine connection to a mongos. When connected to a mongos, the isMaster command returns a document that contains the string isdbgrid in the msg field.
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