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Martin Schwenke 3a760b09ed Evenscripts: improvements to ctdb_service_check_reconfigure(). 
* Make this function applicable to "ipreallocated" event too.

* Monitor event should not always succeed just because we reconfigure.

  If the service was unhealthy before the reconfigure and we end the
  reconfigure with "exit 0" then we can cause the node's health status
  to flip-flop.

  To avoid this we return the status of the service from the previous
  monitor event.

Signed-off-by: Martin Schwenke <martin@meltin.net>

(This used to be ctdb commit 21dfcbbdccd906fcd6ab7bba81418ce565bf63aa)
2011-08-11 10:46:57 +10:00
..
events.d Eventscripts: 50.samba - only start/stop nmbd if $CTDB_SERVICE_NMB set. 2011-08-11 10:46:57 +10:00
ctdb-crash-cleanup.sh In the example script to remove all ip addresses after a ctdb crash, 2010-04-23 09:08:26 +10:00
ctdb.init Eventscripts: remove unnecessary absolute paths from external commands. 2011-08-03 17:19:15 +10:00
ctdb.sysconfig Add documentation for the new filesystem use monitoring 2011-08-11 10:07:50 +10:00
functions Evenscripts: improvements to ctdb_service_check_reconfigure(). 2011-08-11 10:46:57 +10:00
gdb_backtrace lib/util: import fault/backtrace handling from samba. 2010-01-20 09:44:36 +01:00
interface_modify.sh Scripts: remove absolute paths from interface_modify.sh. 2011-08-08 15:50:10 +10:00
notify.sh server: add "setup" event 2010-02-23 10:38:49 +01:00
README Scripts: add note about not using absolute command paths to README. 2011-08-09 16:36:37 +10:00
statd-callout Eventscripts: remove unnecessary absolute paths from external commands. 2011-08-03 17:19:15 +10:00

README 

This directory contains run-time support scripts for CTDB.

Selected highlights:

  ctdb.init

    An initscript for starting ctdbd at boot time.

  events.d/

    Eventscripts.  See events.d/README for more details.

  functions

    Support functions, sourced by eventscripts and other scripts.

  interface_modify.sh

    Script to support add/remove IPs and other funky stuff.  Not sure
    why this is separate... but it certainly allows easy wrapping by
    flock.

  statd-callout

    rpc.statd high-availability callout to support lock migration on
    failover.

Notes:

* All of these scripts are written in POSIX Bourne shell.  Please
  avoid bash-isms, including the use of "local" variables (which are
  not available in POSIX shell).

* Do not use absolute paths for commands.  Unit tests attempt to
  replace many commands with stubs and can not do this if commands are
  specified with absolute paths.  The functions file controls $PATH so
  absolute paths should not be required.