Default Parameters for MongoJournalStTest

This test monitors writes to the journals and data files, reports the time taken for these writes, and proactively alerts administrators to delays in the journaling process. Using this test, administrators can also figure out at what step of the process the delay may have occurred - when writing to the journal? when committing the writes? or when writing to the data files? This way, the test enables administrators to accurately diagnose the root-cause of journaling slowness, so that they can fix it before it results in data loss.

Note:

This test reports metrics only for those MongoDB instances that use the MMAPv1 storage engine.

This page depicts the default parameters that need to be configured for MongoJournalStTest.

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

• 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.

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

When changing default configurations of tests, the values with "$" indicate variables that will be replaced by the eG system according to the specific server being managed - for instance, $hostName is the host/nickname of the target host, $port is the port number of the server being monitored. E.g., for a server xyz:80, $hostName will be changed automatically by the eG manager to "xyz" and $port will be changed to "80" when configuring a test.