The Tungsten Manager is responsible for monitoring and managing a Continuent
Tungsten dataservice. The manager has a number of control and supervisory
roles for the operation of the cluster, and acts both as a control and a
central information source for the status and health of the dataservice as
Primarily, the Tungsten Manager handles the following tasks:
Monitors the replication status of each datasource within the cluster.
Communicates and updates Tungsten Connector with information about the
status of each datasource. In the event of a change of status,
Tungsten Connectors are notified so that queries can be redirected
Manages all the individual components of the system. Using the Java
JMX system the manager is able to directly control the different
components to change status, control the replication process, and
Checks to determine the availability of datasources by using either
the Echo TCP/IP protocol on port 7 (default), or using the system
ping protocol to determine whether a host is
available. The configuration of the protocol to be used can be made by
adjusting the manager properties. For more information, see
Section C.2.2.3, “Host Availability Checks”.
Includes an advanced rules engine. The rule engine is used to respond
to different events within the cluster and perform the necessary
operations to keep the dataservice in optimal working state. During
any change in status, whether user-selected or automatically triggered
due to a failure, the rules are used to make decisions about whether
to restart services, swap masters, or reconfigure connectors.
Please see the Tungsten Manager documentation section Chapter 7, Tungsten Manager for more information.