CMDB Sync blackout windows

CMDB synchronization can usually occur at any time. To prevent any CMDB access during sensitive times, blackout windows can be configured. During a blackout window, all processing of the CMDB synchronization queue is paused. New nodes can still be scheduled for synchronization, both by continuous synchronization and batch synchronization, but no processing occurs until the blackout window ends.

BMC Atrium Discovery version 8.2 used a configuration file stored on the appliance to manage CMDB Sync blackout windows. In BMC Atrium Discovery version 8.3, a user interface tool creates blackout windows that are stored as nodes in the datastore.

Note

If you have configured blackout windows using the version BMC Atrium Discovery 8.2 configuration file, that file is read during the upgrade to BMC Atrium Discovery 8.3, and new blackout windows are created that are stored as nodes in the datastore. The configuration file is renamed from cmdb_sync_blackout.cfg to cmdb_sync_blackout.converted. CMDB Sync will not start if there is a configuration file cmdb_sync_blackout.cfg and blackout windows are already stored in the datastore.

To configure a CMDB Sync blackout window

You can configure a CMDB Sync blackout window to occur daily, weekly, or monthly and can specify a start time and duration.

  1. Set up the CMDB Sync connection as described here.
  2. From the Configuration tab of the CMDB Sync Configuration page, click the Manage Blackout Windows tab.
    The CMDB Sync Blackout Windows page is displayed.
  3. Click the Add button to add a new blackout window.
  4. Enter the information for the blackout window in the fields described below.

    Field Name

    Details

    Comment

    Enter a comment for the blackout window. Where the blackout window is referred to in the UI, this label is shown.

    Frequency

    Select a frequency for the blackout window. For example, this can be Daily, Weekly, or Monthly.
    For a weekly blackout window, you are provided with buttons for each day. Select the day or days that you want the blackout window to be enforced.
    For a monthly blackout window, you are provided with buttons for each day in the month. Select the Each radio button and the day or days that you want the blackout window to be enforced. Alternatively, select the Scan On The radio button and from the associated drop down lists choose one of:
    • First
    • Second
    • Third
    • Fourth
    • Last
    and the day that you want to enforce the blackout window. In this way you can select the Second Tuesday of the month and so forth.

    Start Time

    Select a time for the the blackout window to start.

    Duration

    Select a duration in hours. This is the length of the the blackout window to be enforced and can be from 1 to 24 hours. For a daily scan the maximum number of hours you can select is 23. This prevents you from inadvertently scheduling a 24/7 blackout.

  5. Click OK.
    This screen illustrates the CMDB Sync Blackout Windows page displayed showing the CMDB Sync blackout window.
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