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2 Failover Manager - Overview : 2.2 Prerequisites

You must modify the pg_hba.conf file on the Master and Standby nodes, adding entries that allow communication between the all of the nodes in the cluster. The following example demonstrates entries that might be made to the pg_hba.conf file on the Master node:
efm specifies the name of a valid database user.
fmdb specifies the name of a database to which the efm user may connect.
By default, the pg_hba.conf file resides in the data directory, under your Postgres installation. After modifying the pg_hba.conf file, you must reload the configuration file on each node for the changes to take effect. You can use the following command:
Where x specifies the Postgres version.
If a Linux firewall (i.e. iptables) is enabled on the host of a Failover Manager node, you may need to add rules to the firewall configuration that allow tcp communication between the Failover Manager processes in the cluster. For example:
The command shown above opens a small range of ports (7800 through 7810). Failover Manager will connect via the port that corresponds to the port specified in the cluster properties file.
The database user specified in the ppcd.properties file must have sufficient privileges to invoke the following functions on behalf of Failover Manager:

2 Failover Manager - Overview : 2.2 Prerequisites

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