$ sudo chmod +x /etc/init.d/slony_failover
$ sudo update-rc.d slony_failover start 99 2 3 4 5 . stop 24 0 1 6
$ sudo invoke-rc.d slony_failover start
$ sudo chmod +x /etc/init.d/slony_failover
$ sudo update-rc.d slony_failover start 99 2 3 4 5 . stop 24 0 1 6
$ sudo invoke-rc.d slony_failover start