How to Fix MongoDB Error Code – 160 – MaxStalenessOutOfRange

MongoDB is a popular NoSQL database that offers high performance, scalability, and flexibility. However, like any software, it can encounter errors that need to be resolved. One such error is the MongoDB Error Code – 160 – MaxStalenessOutOfRange. In this article, we will explore what this error means and how to fix it.

Understanding MongoDB Error Code – 160 – MaxStalenessOutOfRange

The MongoDB Error Code – 160 – MaxStalenessOutOfRange occurs when the value of the maxStalenessSeconds parameter is set to a value that is outside the acceptable range. The maxStalenessSeconds parameter is used to specify the maximum replication lag that a secondary replica set member can have before it is considered stale.

When this error occurs, it means that the value set for maxStalenessSeconds is either too high or too low. If the value is too high, it can lead to increased replication lag and potential data inconsistencies. On the other hand, if the value is too low, it can cause unnecessary failovers and increased load on the primary replica set member.

Fixing MongoDB Error Code – 160 – MaxStalenessOutOfRange

To fix the MongoDB Error Code – 160 – MaxStalenessOutOfRange, you need to adjust the value of the maxStalenessSeconds parameter to a valid range. The valid range for this parameter is between 90 seconds and the value of the heartbeatFrequencyMS parameter.

Here are the steps to fix this error:

Step 1: Connect to the MongoDB Instance

Use the MongoDB shell or a MongoDB client to connect to the MongoDB instance where the error is occurring.

mongo

Step 2: Check the Current Value of maxStalenessSeconds

Run the following command to check the current value of the maxStalenessSeconds parameter:

db.adminCommand({replSetGetConfig: 1}).config.members[n].maxStalenessSeconds

Replace n with the index of the replica set member where the error is occurring.

Step 3: Adjust the Value of maxStalenessSeconds

If the current value of maxStalenessSeconds is outside the valid range, you need to adjust it. Run the following command to set a new value:

db.adminCommand({replSetGetConfig: 1}).config.members[n].maxStalenessSeconds = newValue

Replace n with the index of the replica set member where the error is occurring, and newValue with a value within the valid range.

Step 4: Save the Configuration Changes

After adjusting the value of maxStalenessSeconds, you need to save the configuration changes. Run the following command:

rs.reconfig(config)

Replace config with the modified configuration object.

Step 5: Verify the Configuration

Finally, verify the new configuration by running the following command:

db.adminCommand({replSetGetConfig: 1})

This command will display the current replica set configuration, including the updated value of maxStalenessSeconds.

Summary

In conclusion, the MongoDB Error Code – 160 – MaxStalenessOutOfRange occurs when the value of the maxStalenessSeconds parameter is set outside the valid range. To fix this error, you need to adjust the value of maxStalenessSeconds to a value between 90 seconds and the value of the heartbeatFrequencyMS parameter. By following the steps outlined in this article, you can resolve this error and ensure the smooth operation of your MongoDB replica set.

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