Agents Administration - Tests
 

Configuration of MySQLTabIOTest

This test auto-discovers the top tables that are I/O intensive and for each table, reports the wait time and the read/write latency. Using this test, administrators can figure out the table that is experiencing slowness due to high read and write latencies.

The default parameters associated with this test are:

  • 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 HOST for which this test is to be configured.

  • In the PORT text box, specify the port at which the target host is listening.

  • In the DB text box, specify the name of a database on the MySQL server.

  • 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 server. To know how to create such a user, refer to Configuring the eG Agent with Access Privileges topic in the Monitoring MySQL Database servers document. Specify the credentials of such a user in the USERNAME and PASSWORD textboxes.

  • Confirm the password by retyping it in the CONFIRM PASSWORD textbox.

  • By default, the ALLOW PUBLIC KEY flag is set to No. But, if the specified USER is created with caching_sha2_password as the authentication plugin, then the eG agent can connect to the target database server using RSA public key. To this effect, you have to set ALLOW PUBLIC KEY flag to Yes.

  • By default, the SSL flag is set to No, indicating that the target MySQL database server is not SSL-enabled by default. To enable the test to connect to an SSL-enabled MySQL database server, set the SSL flag to Yes.

  • If the eG agent is required to establish an encrypted connection with the target MySQL database server by authenticating the server's identity through verifying the server CA certificate, set VERIFY CA flag to Yes. By default, this flag is set to No.

  • This parameter is applicable only if the VERIFY CA parameter is set to Yes. To verify the target server certificate, provide the password of the truststore file which contains the server CA certificate in the TRUSTSTORE PASSWORD text box. By default, this parameter is set to none.

  • Confirm the PASSWORD by retyping it in the CONFIRM PASSWORD text box.

  • This parameter is applicable only if the VERIFY CA parameter is set to Yes. To establish a connection with the target MySQL database server, the eG agent needs to have access to the client certificate. For this provide the password of the keystore file which contains the client certificate in the KEYSTORE PASSWORD text box. By default, this parameter is set to none.

  • Confirm the PASSWORD by retyping it in the CONFIRM PASSWORD text box.

  • By default, the detailed diagnosis of this test, if enabled, will report only the top-10 tables. This is why, the DD ROW COUNT parameter is set to 10 by default. If you want to include more or less tables in detailed diagnosis, then change the value of this parameter accordingly.

  • To make diagnosis more efficient and accurate, eG embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test, by default, for a particular server, choose the On option against DETAILED DIAGNOSIS. To disable the capability, click on the Off option.

    The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

    • The eG manager license should allow the detailed diagnosis capability.

    • Both the bad and normal frequencies configured for the detailed diagnosis measures should not be 0.

  • If multiple components of the same component type are awaiting configuration, then an APPLY TO OTHER COMPONENTS button will appear in this page. Clicking on this button 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.