Separated mmmon and ndbclustermon from the list of supported modules into
their own legacy section. Added a warning about the deprecation to the
relevant documents.
Also added the csmon link to the documentation contents.
Event handling is now enabled by default. If the monitor cannot query the EVENTS-
table (most likely because of missing credentials), print an error suggesting to
turn the feature off.
When disabling events on a rejoining standalone server (likely a former master),
disable binlog event recording for the session. This prevents the ALTER EVENT
queries from generating binlog events.
Also added documentation and combined similar parts in the code.
The auto_failover is a more reliable solution and should be used instead. Several
unused parameters were removed, although they can still be defined in the config
file. Updated documentation on the relevant parts.
The disk configuration can be different on different servers.
Hence it should be possible to specify the disk space threshold
separately for each server.
If the feature is enabled (default off), at the end of a monitor loop
(once server states are known), read_only is enabled on slaves servers
without it.
In this case, the server was already a slave and is not being demoted. Also, the file may
contain queries which cannot be ran while a slave connection is running.
For some reason, the source code of mysqlmon was split into C and C++
sources. This caused problems by effectively discarding all changes from
2.1 that are merged into 2.2.
This commit merges the changes into the correct file that were added to
the wrong file.
The new parameter allows ignoring of master servers that are external to
the monitor configuration. This allows sub-trees of the actual replication
tree to be used as fully fledged replication trees.
The master failure can now be verified by checking when the slaves are
connected to the master. If the slaves do not receive any events from the
master, the connections are considered as down after a configurable limit.
Added two parameters for controlling whether the check is done and for how
long the monitor waits before doing the failover.
