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Replication

rs.printReplicationInfo()

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  • Definition
  • Compatibility

Definition

rs.printReplicationInfo()

Prints a formatted report of the replica set member's oplog. The displayed report formats the data returned by db.getReplicationInfo(). The output of rs.printReplicationInfo() is identical to that of db.printReplicationInfo().

Note

The rs.printReplicationInfo() method run in mongosh does not return JSON. Use rs.printReplicationInfo() for manual inspection, and db.getReplicationInfo() in scripts.

Output Example

The following example is a sample output from the rs.printReplicationInfo() method run on the primary:

configured oplog size:   192MB
log length start to end: 65422secs (18.17hrs)
oplog first event time:  Mon Jun 23 2014 17:47:18 GMT-0400 (EDT)
oplog last event time:   Tue Jun 24 2014 11:57:40 GMT-0400 (EDT)
now:                     Thu Jun 26 2014 14:24:39 GMT-0400 (EDT)

Output Fields

rs.printReplicationInfo() formats and prints the data returned by db.getReplicationInfo():

configured oplog size
Displays the db.getReplicationInfo.logSizeMB value.
log length start to end
Displays the db.getReplicationInfo.timeDiff and db.getReplicationInfo.timeDiffHours values.
oplog first event time
Displays the db.getReplicationInfo.tFirst.
oplog last event time
Displays the db.getReplicationInfo.tLast.
now
Displays the db.getReplicationInfo.now.

See db.getReplicationInfo() for description of the data.

Compatibility

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

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

Important

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

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rs.initiate

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rs.printSecondaryReplicationInfo