Backend Server

A technical walk-through of how the PerformanceGuard backend server works.

Backend server Telnet interface

The backend service exposes a Telnet interface. By default the Telnet server runs on port 4005. You can change the port with the Telnet Port parameter (ADMINISTRATION > Setup > Parameters, Notification tab). The value 0 disables the Telnet interface.

To sign in to the backend service Telnet interface, use the user name and password of a PerformanceGuard user that has the administrator role, for example the built-in admin user.

Caution

Change the password of the built-in admin user after installation. If you don’t use the Telnet interface, set Telnet Port to 0 to disable it.

The following is a snapshot of a Telnet session, with the built-in command overview:

• Text

PerformanceGuard Backend Server <version>

login: admin
password: *****

Commands:
  exit | quit            - Exits this admin session
  history                - Shows history of commands
  ![number]              - Re-executes the command history 'number'
  conf                   - Shows server configuration
  help                   - Shows this message
  jobs [cancel|start]    - Lists/cancels/starts database aggregate jobs
  refresh                - Refreshes configuration/filters
  select ...             - Executes database request
  shutdown               - Shuts down the server
  test                   - Send test notification e-mail to default receiver
  test name              - Send test notification e-mail to named receiver
  status                 - Shows database & time status
  version                - Shows server version
  dump [variable]        - Dump internal data
        cache            - Dump internal cache
        server           - Dump server
        connections      - Dump ConnectionPool and the corresponding thread information
  metrics                - Show metrics
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