3rd party HA middleware for Berkeley DB

Are there HA middlewares(such like OpenClovis) that support Berkeley DB? And if any, what's pros/cons of using those HA middlewares?
Thanks
Message was edited by:
user610522
Message was edited by:
user610522
Message was edited by:
user610522

I've also looked at using BerkeleyDB under the control of an AMF system, and I think that the two are compatible, but they would not be aware of each other, and it would be up to you to in your application to coordinate them.
The concepts are compatible though. An SI assigned to a 2N service group could be running 2 SUs, each of which corresponds to a BerkeleyDB environment in a 2-site replication group. The AMF would assign active/standby roles for the SI, and the application can translate that into MASTER/CLIENT calls to the repmgrStart() functions.
There are tricky details you need to work out though. You have two independent systems doing fault detection. i.e. If the BerkeleyDB repmgr framework detects a disconnect, it will conduct an election without asking for your permission to do so. What you can do with the AMF is watch for changes to the master/client role. If you are demoted from master to client, but still assigned the 'active' role to the SI by the AMF, you can report an AMF error, so that the AMF will failover the SI. This would keep the SI-active assignment in-sync with the BerkeleyDB assignment of the Master site, for a 2N service group, anyway.
As this note might imply, I have looked at doing this myself.

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