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15.1.2 Service Features »
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15.1.1. The Service Architecture

The MySQL Enterprise Monitor is powered by a distributed web-based application that is deployed within the confines of the corporate firewall. The Enterprise Dashboard provides the interface to the server data, advisor notifications, live information and communication with the MySQL Enterprise Update Service.

Subscribers are kept up to date about the latest releases of the MySQL server or issues that may affect their specific implementation of MySQL by using the MySQL Enterprise Update Service. This same mechanism is used to notify MySQL Enterprise Monitor users of updates to the application or to the MySQL Advisors and Rules. The various components are described below.

  • Monitor Agent

    Monitor Agents are the foot soldiers of the MySQL Enterprise Monitor; they monitor each MySQL server. Running as a Windows service or Unix daemon, the Agent uses a combination of MySQL specific commands, SQL queries, and custom scripts to collect and report MySQL server or operating system (OS) specific data. The Monitor Agent initiates a “heartbeat” to the Service Manager on a regular basis to ensure specific MySQL server and OS level data collections are current.

    In the overall architecture, the Monitor Agent is the only component of the MySQL Enterprise Monitor that establishes or maintains a connection with the monitored MySQL Server. As with any MySQL client, the Monitor Agent is authenticated on the monitored MySQL server and requires a user name and password to establish a connection.

    In addition, the MySQL Enterprise Monitor Agent also provides a proxy service that allows for information about queries to be captured and reported as part of the Query Analyzer functionality. The MySQL Enterprise Monitor Agent accepts client connections and forwards the SQL statements on to the server and returns the results. In the background, the agent is collecting information about the query execution, row counts, times and other data so that queries and their execution can be monitored.

  • Service Manager

    The Service Manager is the heart and soul of the MySQL Enterprise Monitor. It is built on a collection of Java services hosted on a single Windows or Unix server. The Service Manager interacts with all of the Monitor Agents under its domain to collect MySQL server and OS level data for each of the monitored MySQL servers.

    The Service Manager performs many duties including:

    • Enterprise Dashboard, the main interface to the MySQL Enterprise Service Manager.

    • Autodiscovery of monitored MySQL Servers.

    • Creation and management of Monitor Agent tasks.

    • Storage of data collections from Monitor Agents.

    • Monitoring of key MySQL server and OS level metric data collections.

    • Reporting MySQL best practice events and violations.

    • Providing MySQL expert advice for MySQL best practice violations.

    • Autodiscovery of replication topology (Not available for all subscription levels)

  • The Repository

    The Repository is built on MySQL 5.0.x and is used to store MySQL server and OS level data collections for each of the monitored MySQL Servers. This information is used by the Service Manager to evaluate and report the health and status of the monitored MySQL environment(s).

  • The Enterprise Dashboard

    The MySQL Enterprise web client provides the graphical user interface (GUI) for the MySQL Enterprise Monitor. This interface is the primary means of monitoring the state of your MySQL servers, identifying rule violations and providing advice on how best to address and correct any underlying issues.

    This interface also provides an easy means of configuring advisors, adding users, creating notification groups, and receiving updates from MySQL Enterprise.