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The databases can become frozen a while before we do the actual recovery
since we have the re-recovery timeout.
There is no point in doing much monitoring if we are waiting for a recovery,
or if we are banned.
This will eliminate some annoying log entries where certain tests will fail if the databases are locked.
(This used to be ctdb commit ff824676fab94168707aada7423ae766bc0f711c)
master to perform an explicit ip reallocation.
This is more reliable and faster than having the recovery dameon track these
changes, and since we now have an explicit method to ask the recovery daemon
to perform an explicit ip reallocation, we should use this.
(This used to be ctdb commit 3807681e74f4bfe92befdae6ed616ff5f1a99880)
This would allow a sysadmin to set up ctdb to send an email/snmptrap/... when the status of the node changes.
(This used to be ctdb commit ce534a83a05dbd40238e4eee0669d60ff396f935)
race between the ctdb tool and the recovery daemon both at once
trying to push flag changes across the cluster.
(This used to be ctdb commit a9a1156ea4e10483a4bf4265b8e9203f0af033aa)
just disable the monitoring during the "startrecovery" event and enable it again once recovery has completed
(This used to be ctdb commit 68029894f80804c9f31fc90ed0c1b58f75812c3d)
nodes into two separate files.
move the monitoring of keepalives for detecting connected/disconnected
remote nodes into ctdb_keepalive.c
(This used to be ctdb commit 23a57b20c314d5f11a433cf251eb9d9de743849a)
flag.
change calling of the recovered/takeip/releaseip event scripts to use
these enable/disable functions instead of stopping/starting monitoring.
when we disable monitoring we want all events to still be running
in particular the events to monitor for dead nodes and we only want to
supress running the monitor event scripts
(This used to be ctdb commit a006dcc4f75aba950dd701ad7d1a84e89df285e8)
Check whether monitoring is enabled or not before creating new events
and log why the event is not set up othervise
(This used to be ctdb commit 2f352b2606c04a65ce461fc2e99e6d6251ac4f20)
control, instead call ctdb_start/stop_monitoring()
ctdb_stop_monitoring() dont allocate a new monitoring context, leave it
NULL. Also set the monitoring_mode in this function so that
ctdb_stop/start_monitoring() and ->monitoring_mode are kept in sync.
Add a debug message to log that we have stopped monitoring.
ctdb_start_monitoring() check whether monitoring is already active and
make the function idempotent.
Create the monitoring context when monitoring is started.
Update ->monitoring_mode once the monitoring has been started.
Add a debug message to log that we have started monitoring.
When we temporarily stop monitoring while running an event script,
restart monitoring after the event script wrapper returns instead of in
the event script callback.
Let monitoring_mode start out as DISABLED and let it be enabled once we call ctdb_start_monitoring.
dont check for MONITORING_DISABLED in check_fore_dead_nodes(). If
monitoring is disabled, this event handler will not be called.
(This used to be ctdb commit 3a93ae8bdcffb1adbd6243844f3058fc742f76aa)
of the startup event scripts after the point where recovery has
started and the node is in normal operation
This makes the 'startup' script just a special type of the 'monitor'
script which is called first
(This used to be ctdb commit 7424c30a5fd04aea0137c466b4318c3f185280d8)
multiple public addresses spread across multiple interfaces on each
node.
this is a massive patch since we have previously made the assumtion that
we only have one public address per node.
get rid of the public_interface argument. the public addresses file
now explicitely lists which interface the address belongs to
(This used to be ctdb commit 462ebbc791e906a6b874c862defea43235597ca8)
places.
create a new helper function to generate new generation id values that
know about the invalid id and avoids generating it.
update the ctdb status tool to know about the invalid generation id and
print the string INVALID instead
(This used to be ctdb commit 4fbcd189543cb8a92227fdcd3d158472e558ccda)
and it should thus no longer serve any database access calls until it
has been reintroduced into the cluster.
when becoming banned, reset the local generation id to 1 to prevent
any further database access calls from other nodes from being processed.
(This used to be ctdb commit b531021db43ebaa5f5d0ace28c59913d359bd8a8)
see both the old flags as well as the new flags (so we can tell which
flags changed)
send the CTDB_SRVID_RECONFIGURE messages to connected nodes only, not to
every node, connected or not, in the cluster.
in the handler inside the recovery daemon which is invoked for node flag
change messages, only do a takeover_run() and redistribute the ip addresses IF it was the
disabled or the unhealthy flags that changed. Also send out the cluster
reconfigured message in this case.
If any of the other flags changed we dont need to do the takeover_run(0
here since that will be done during recovery.
(This used to be ctdb commit 5549b2058e2c148a8ca9d419123acf3247bb8829)
