Configuration of MongoRepWorkldTest

This test tracks the operations performed on the replica set and in the process, reveals the load on the replica set. The test also tracks the usage of the oplog and alerts administrators if the oplog is about to run out of space for recording changes. Additionally, the test also keeps an eye out for long gaps between when a change is recorded in the primary's oplog and when it is actually applied on the secondary, and promptly notifies administrators of the same. This way, the test brings inconsistencies in data replication to the immediate attention of administrators and averts the data loss that might occur if the primary crashes.

The default parameters associated with this test are as follows:

• The TEST PERIOD list box helps the user to decide how often this test needs to be executed.

• In the HOST text box, specify the IP address of the Mongo database server for which this test is to be configured.

• In the PORT text box, specify the port number through which the Mongo database server communicates. By default, this is 27107.

• The test connects to a specific Mongo database to run API commands and pull metrics of interest. Specify the name of this database in the DATABASE NAME text box. The default value of this parameter is admin.

• If multiple components of the same component type are awaiting configuration, then an APPLY TO OTHER COMPONENTS check box will appear in this page. Clicking on this check box will allow you to apply the configuration to all/selected components of that type.

• Once the necessary values have been provided, clicking on the UPDATE button will register the changes made.

When changing the configuration for specific servers, a “*” beside the text box corresponding to the parameter signifies that these values have to be manually configured by the user. The parameter values that require to be configured will typically be prefixed with a “$“ or contain a series of “*”. A value of "none" in the parameter value indicates that the corresponding parameter value can be changed if required.