Failover

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High Availability Failover is the ability for client connections to migrate from one server to another in event of server failure so client applications can continue to operate.

See more on Failover strategies.

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I have Ensemble/Healthshare running in a production environment which is setup with a mirror failover and an arbiter sitting between them.

In the event of a failover we have a number of connections that need stopping/monitoring and starting in a certain order.

Is there a programmatic way we can detect the failover and stop certain services and operations immediately and then start them up again in the required order, checking their connection state before starting the next connection.

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Jon Astle's picture
Jon Astle 9 November 2017
Last reply 10 November 2017
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In System Administration | Configuration |  System Configuration | Journal Settings there is a check box for Freeze on error.

From reading the documentation, it sounds like the choice to freeze on error is one of system availability vs system integrity.

Curious to know whether Ensemble users choose to freeze on error or not.

If you have a best practice recommendation based upon your experience or knowledge, that would be helpful information too.

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Barry Veach's picture
Barry Veach 2 June 2018
Last reply 4 June 2018
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We are trying to script a High Availability Shutdown/Start script in case we need to fail over to one of our other servers we can be back up within mins. Is there a way to configure the startup procedure to Automatically Stop/Start the JDBC server when shutting down or starting up cache? is there an auto setting we can change?

Thanks

Scott Roth

The Ohio State University Wexner Medical Center

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Scott Roth's picture
Scott Roth 13 November 2018
Last reply 18 November 2018
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