Creating a System Image

You can use this procedure to create a new system image, such as in the restoration process of a node failure or for launching new instances for unfolding. If this image is not created, the software on the recovered instance will not match and the database cannot start if a node failure occurs. In addition, you must create a new system image after upgrading software or adding the system to Teradata QueryGrid.

Creating a system image requires a reboot of the target node used to create the image. On a single-node system, the system image creation process automatically targets the one available node. After the system reboots, monitor the status of the instance using the AWS CloudWatch logs in /var/log. If you do not complete this procedure, Teradata Database uses the image generated when you launched the instance.

  1. Stop the database.
    # tpareset –x –y stop for swupgrade
  2. Verify the database is in a DOWN/HARDSTOP state.
    # pdestate -a
    PDE state: DOWN/HARDSTOP
    Putting the database in this state may take a number of minutes.
  3. Display a list of running nodes by instance ID, BYNET name, and PMA ID.
    # tdc-nodestart-post-swupgrade --list-nodes
    Following is an example of output:
    Instance ID   Bynet Name   PMA ID
    -------------------- ---------------- ----------------
    i-1a78a202   byn001-0133
    i-78a40160   byn001-0234
    i-2bd57033   byn001-0335
    i-5bd87d43   byn001-0436
    i-1878a200   byn001-0537
    i-a57ba1bd   byn001-0638
  4. Specify either the instance ID, BYNET name, or PMA ID to use to create the instance.
    # tdc-nodestart-post-swupgrade --instance-id instance_ID
    # tdc-nodestart-post-swupgrade --bynet-name BYNET_NAME
    # tdc-nodestart-post-swupgrade --pma-id PMA_ID
    
    For example:
    # tdc-nodestart-post-swupgrade -–bynet-name byn001-03
    where byn001-03 is the BYNET name.
  5. Start the database.
    # /etc/init.d/tpa start
    
  6. Ensure the database in running again.
    # pdestate -w
    PDE state: RUN/STARTED
    Putting the database in this state may take a number of minutes.

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