Administering queue managers

Your security and request-processing requirements determine the appropriate configuration for your queue managers. If you find that the default settings do not meet your requirements, you can modify the settings.

You can use Provisioning Manager to administer queue managers as follows:

• Specify how queue managers handle queued requests

  You can control how queue managers handle queued requests by modifying the properties of queue managers. You set properties for all queue managers, not for specific servers.

  You can modify the following transaction properties for queue managers:

  Requests security

  This property controls which users and groups can submit queued requests to provisioning engines and the type of procedures that they can execute. Options for executing procedures include the following:

  • Execute procedures

    A user with Execute Procedures permissions can run only MPF procedures that do not change the XML of a procedure. These procedures must be part of a namespace that is registered in the configuration database.

  • Execute with caller's credentials

    A user with Execute with Caller's Credentials permission can pass a security context in the request. Setting the Execute Trusted Procedures permission to Allow automatically sets the Execute with Caller's Credentials permission to Allow.

  • Execute trusted procedures

    A users with Execute Trusted Procedures permissions can run MPF procedures that change the XML of a procedure. These procedures can be executed without being previously registered in the configuration database. The default users and groups with execution permissions for executing trusted procedures include: Administrator, MPFAdmins, and MPFTrustedUsers.

  For more information on related security topics, see Managing security.

  Max queue size

  This property controls the maximum number of requests the queue manager can store in the queue. The default max queue size is 10,000 requests.

  Action request threads

  Each thread is responsible for taking a request from the queue and sending it to provisioning engines. The greater the number of threads, the greater the number of requests that MPF can process simultaneously. A greater number of threads will consume more hardware resources. You can use this option to tune the performance for request processing. The default number of action request threads is two threads.

  Stability thread wait time

  This property controls the interval between scans of the transaction log database. During these scans, MPF searches for queue actions for which dependencies have been satisfied and are now ready to run, or have previously failed and are now ready to be retried.

  Transaction log pool size

  This property specifies the maximum number of connections that can be established to one transaction log database. The default setting is 100 simultaneous connections.

• View information about queue managers

  The information provided in Provisioning Manager about each queue manager includes the server name, status (active or inactive), and state (running or stopped) of each queue manager.

  For more information, see To view the names and status of provisioning servers.

• Change the status of individual queue managers

  You can activate, deactivate, start, or stop a queue manager on a server. When you deactivate a queue manager, MPF signals the client to stop sending requests to that queue manager. When you stop a queue manager, the client continues to send requests to the stopped queue manager. However, the queue manager blocks all requests until you start the queue manager again.

  For more information, see To activate, deactivate, start, or stop the Provisioning Queue Manager service on a server.

Notes

• You can also change how clients handle connections to queue managers.

  For more information, see Administering clients.

• Using queue manager properties, you can tune the performance of queued request processing.

  For more information, see Managing performance.

For more information about queue managers, see Queue managers.