Refer to the following failover configuration steps when running DSA on an external server.
- Configure the standby Data Mover daemon to use the external DSC by editing /etc/opt/teradata/datamover/daemon.properties with the following information:
dsa.rest.endpoint=http://external_dsc_host:9090/dsa is.dsc.colocate.dm=falseIf the external DSA REST server is configured with HTTPS, replace http with https in the dsa.rest.endpoint codeblock above.
- Stop the DSC on the standby host using the /etc/init.d/dsc stop command.
- Run dmcluster status and verify that the DSC and DSA REST components are marked EXTERNAL on both the active and standby Data Mover hosts.If the DSC or DSA REST component is marked RUNNING or STOPPED, verify that the is.dsc.colocate.dm property is set in the daemon.properties file as false.If Data Mover failover occurs, the Data Mover failover monitor automatically fails over to the standby Data Mover server. If the external DSA fails, both active and standby Data Mover servers need to be reconfigured to use the new DSC. See Configuring Data Mover to Use an External DSC.