- When specifying a configuration, if it already exists use
the existing configuration as the default, thus allowing you
to change only a specific configuration value.
- When specifying a new alternative configuration, use the
primary (aka first) configuration as the base.
- If MASTER_HOST is changed on the primary (first, nameless)
configuration, then all configurations are erased.
- At "SLAVE START", always start from the first configuration.
a70885a541