Configure Failover with Bundled DSC | Teradata Data Mover - 17.00 - Configuring Failover for DSC Running on the Data Mover Server - Teradata Data Mover

Teradata® Data Mover Installation, Configuration, and Upgrade Guide for Customers

Product
Teradata Data Mover
Release Number
17.00
Release Date
November 30, 2021
Content Type
Administration
Configuration
Installation
Publication ID
B035-4102-030K
Language
English (United States)
Refer to the following failover configuration steps when running DSA on the Data Mover server. These steps can be performed prior to a failover event. This only applies to systems using Data Mover 16.20 or later and Teradata system versions are 16.00 or later on both the source and target.
  1. Stop the active monitor:
    /opt/teradata/client/nn.nn/datamover/failover/dmcluster stopmonitor
  2. Start Teradata ActiveMQ and DSC on the standby host:
    /etc/init.d/tdactivemq start
    /etc/init.d/dsc start
  3. See Configuring the Source and Target Systems section for information on registering the source and target systems with DSC and restart DSMAIN.
  4. Perform the following steps for the source and target TPA nodes with BAR NC ClientHandler software installed:
    1. Append the standby Data Mover host to broker.list found in the /etc/opt/teradata/dsa/clienthandler.properties file as in the following example:
      broker.list=153.64.24.162:61616,153.64.24.164:61616

      If upgrading, refer to the saved clienthandler.properites file created during the upgrade.

    2. Restart the ClientHandlers.
      /etc/init.d/clienthandler restart
  5. Configure the DSA network, see DSA Network Configuration.
  6. Perform the following steps for the source and target TPA nodes with BAR NC ClientHandler software installed:
    1. Remove the standby Data Mover host from broker.list by editing the /etc/opt/teradata/dsa/clienthandler.properties file.
      Leave the active Data Mover host in broker.list.

      If upgrading, refer to the saved clienthandler.properites file created during the upgrade.

    2. Restart the ClientHandlers.
      /etc/init.d/clienthandler restart
  7. Stop the DSC and tdactivemq on the standby host:
    /etc/init.d/dsc stop
    /etc/init.d/tdactivemq stop
  8. Start the active monitor.
  9. Run dmcluster status and verify that the DSC and DSA REST components are marked as RUNNING on the active Data Mover server and that the DSC and DSA REST components are marked as STOPPED on the standby Data Mover server.
    If failover occurs, the Data Mover failover monitor automatically fails over to the standby server. Additional configuration is required to enable Data Mover DSA jobs on the new active server. Refer to the tasks: