1) I used Heartbeat
But something Heartbeat have not been updated since 2011.
And maybe now there are better solutions?
For two Trixbox-s, I used the srv record and Heartbeat.
There were 2 servers. One main and another backup.
When the primary server fell, the included backup Asterisk.
When the primary server is alive, then backed off.
The same would be done for FreePBX.
2) And how to have FreePBX c updating of data? Below on the backup server always
kept up to date information. It means that there is within FreePBX or the old fashioned way rsyn and mysqldump ?
If the funds inside FreePBX – how to automate?