MySQL Cluster Cache Test

This test reports statistics pertaining to the key buffer cache available on each node of the target MySQL Cluster database server.

Target of the test : A MySQL Cluster

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each node in the target cluster being monitored

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.

Host

The host for which the test is to be configured.

Port

The port at which the specified host listens.

Database

Specify the name of a database on the target MySQL Cluster database server being monitored

Username and Password

The eG agent has to be configured with the credentials of a user who has server-wide Process and Select privileges on the monitored MySQL Cluster database server. To know how to create such a user, refer to Pre-requisites for Monitoring the MySQL Cluster Database Server topic.

Confirm Password

Confirm the password by retyping it here.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Key read requests

Indicates the number of physical reads of a key block from the disk associated with this node during the last measurement period.

Number

A high value of this measure indicates that your key_buffer_size variable is probably too small.

Key reads

Indicates the number of key read requests received by the cache on this node during the last measurement period.

Number

 

Not flushed key blocks

Indicates the key blocks in the key cache that have been modified, but have not been flushed to the disk from this node during the last measurement period.

Number