9.5 Using the Image Server

The Image server allows Operations Center Web clients (including the dashboard) to render dynamic and 3‑D charts that include performance information.

Use the Image server console to do the following:

  • Stop or start the Image server

  • Clear the Image server cache

  • View performance statistics

  • Turn on debug or logging

  • Set security permissions (important in a multi-homed server environment)

  • Change the admin password for the Image server console

  • Set memory settings

  • Set caching and communication settings

To use the Image server console:

  1. To access the Image server console, from a Web browser, enter the following URL in the Address/Location field:


    where hostname is the hostname of the Image server.

    The paths for the Image server are not configurable using Configuration Manager after installation or upgrade of the Operations Center software. The Image server paths are created during installation and can only be modified using the Corda administrative tools.

    Corda user documentation is not distributed with Operations Center, so the Help links from the Image Server Administration console are not valid. To access Corda documentation online, go to http://www.corda.com/devzone/docs.

    IMPORTANT:If you change the hostname or installation location after installation, the Image server paths must be updated using the Corda administrative tools.

    You must create a new entry for any valid IP address and/or hostname for every URL to access the Operations Center server using the Path/URL Permissions option.

  2. Enter the appropriate password in the Password field.

    The default password is formula. If this has been changed, enter the new password.

  3. Click Submit.

    The Server Administrator page opens and displays a list of current settings.

  4. (Conditional) To create a new entry for any valid IP address or hostname for every Image server URL to be able to access the Operations Center server, click Path/URL Permissions under SECURITY.

  5. Update the Image server options as required. Table 9-5 lists the options available in the Image server console that relate to managing the Image server.

    Table 9-5 Image Server Options





    Address / Port

    This option is NOT used to set Image server ports. Use Configuration Manager to set these.

    Cache / Connections

    Set cache and connections settings as necessary for performance requirements.

    Cache Size specifies the size (in number of images) of the Server cache. It is recommended that this number be between 100 and 500 images.

    Maximum Connections specifies the maximum number of requests that can connect to server simultaneously. Other requests are queued and served in the order they arrive.

    Memory Settings

    Adjust the amount of memory allocated to the server. If routinely charting large data sets or receiving errors from Dashboard charts, the recommended memory setting is 128KB or greater.

    Advanced Settings

    Set levels of image quality for rendering charts. If using JPEG output, consider increasing the quality setting.



    View statistics including total hits, memory in use, max memory available, and maximum threads open.

    Charts Served

    View server up time, number of images served and server status. View graphical charts showing server hits by hour, by day, and by month.


    Debug Settings

    Enable debugging with normal or verbose settings.

    Logging Settings

    Enable logging and set number of transactions to log.


    Path/URL Permissions

    Set allowable URLs for Image server, including any valid IP addresses or hostnames. If operating in a multi-homed server environment, add all additional servers to the PathMaps code.

    Change Password

    Change the password for the Image Server Administration console only.

  6. To manage the Image server, click Home and do any of the following:

    • To stop the Image server, click the Stop button.

    • To restart the Image server, click the Restart button.

    • To clear the Image server cache, click the Clear Cache button.