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In case a replicated Management Server fails for some reason, the following steps are taken:
The watchdog process sends out a notice that MS1 is no longer available.
The Management Server on MS1 is stopped, if possible. This closes database connections from MS1 to the Management Database and ensures that no transactions are made from MS1 anymore. It could be that there was just a transient failure and that the Management Server on MS1 is still up and updating the database. The database must be told to close and disallow all connections from MS1.
The 3DNS update is made to point DNS queries for the Management Server to MS2 instead of MS1.
The Management Server on MS2 is started.
The SSH Tectia Manager can stay running on MS2, or depending on the environment, you can return the system to use MS1 after it has recovered.
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2008 SSH Communications Security Corp.
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