To promote a Slave-DB so that it becomes the new Master-DB. For best practices, you should run this script on a Slave-DB that is currently connected to a running Master-DB.
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Performing a Slave-to-Master promotion involves syncing up DB contents, switching DNS entries and creating a backup (set of snapshots) of the new Master-DB's EBS stripe. After the promotion is complete, the new Master-DB will swap DNS entries with the previous Master-DB and the previous Master-DB will become a slave of the new master. (i.e. The servers will switch roles.)
The Events pane will highlight the progress of the operation. Click on the name of an action in the pane to view a detailed output of the action that can be used to troubleshoot the cause of a failure, if necessary.
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