High Availability Cluster

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Hello.
I need to set up a high availability cluster with two servers. I have
looked for the best configuration I could use but I cannot find
anything I like. I cannot used the DRBD option and I have to use
Ubuntu 14.04 as OS.
In the past I have set up some clusters using the replication of
Postgresql 9.3. I put one node as master and one node as an hot
standby replication. To complete the installation I have configured
Heartbeat + Pacemaker in order to manage the relocation of the virtual
IP used by the master node and the relocation from the master to the
slave instance of Postgresql.

I was wondering if there is another way to set up a complete cluster
that would manage in case of failure:

* the relocation of the VIP (virtual ip address)
* the relocation of the main instance of Postgresql

Best Regards,
Maila Fatticcioni
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