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Martin Schwenke 9313731e96 ctdb-scripts: Update detect_init_style to use /etc/os-release 
/etc/os-release is quite universal.  It can be found on most Linux
distros and on FreeBSD.

Attempt to use /etc/os-release to detect Red Hat, SUSE and Debian
based distros.  If /etc/os-release exists but distro is unknown then
$ID is printed as the detected distro, which will probably result in
sub-optimal behaviour, but when tracing it will at least indicate that
a new distro needs to be handled.

The only way to handle missing /etc/os-release is to set
CTDB_INIT_STYLE - see ctdb.sysconfig(5) for details.

The event script unit tests are updated to use /etc/os-release so
the new logic is exercised.

Signed-off-by: Martin Schwenke <mschwenke@ddn.com>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>

Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Mon Oct 30 09:19:11 UTC 2023 on atb-devel-224
2023-10-30 09:19:11 +00:00
..
events ctdb-scripts: Convert 40.vsftpd to use threshold-based fail counting 2023-10-03 04:53:38 +00:00
nfs-checks.d ctdb-scripts: Stop/start mount/rquotad/status via NFS call-out 2019-03-31 10:45:20 +00:00
ctdb-crash-cleanup.sh ctdb-scripts: Avoid ShellCheck warning SC2164 2022-07-22 06:38:32 +00:00
ctdb.conf ctdb-config: [cluster] recovery lock -> [cluster] cluster lock 2022-01-17 10:21:33 +00:00
ctdb.init ctdb-scripts: Drop uses of ctdbd_wrapper 2022-04-06 06:34:37 +00:00
ctdb.sudoers ctdb-scripts: Update important installed files to use build-time defaults 2015-09-15 08:56:21 +02:00
ctdb.sysconfig ctdb-config: Drop CTDB_STARTUP_TIMEOUT 2022-04-06 06:34:37 +00:00
ctdb.tunables ctdb-scripts: Tunables are now loaded from ctdb.tunables 2018-03-28 02:57:21 +02:00
debug_locks.sh ctdb-scripts: Avoid ShellCheck warning SC2164 2022-07-22 06:38:32 +00:00
debug-hung-script.sh ctdb-scripts: Avoid ShellCheck warning SC2164 2022-07-22 06:38:32 +00:00
functions ctdb-scripts: Update detect_init_style to use /etc/os-release 2023-10-30 09:19:11 +00:00
nfs-linux-kernel-callout ctdb-scripts: Avoid ShellCheck warning SC2162 2022-06-24 09:49:33 +00:00
notification.README ctdb-scripts: Change directory for notifications to events/notification 2018-06-05 17:47:26 +02:00
notify.sh ctdb-scripts: Change directory for notifications to events/notification 2018-06-05 17:47:26 +02:00
README ctdb-scripts: Move event scripts to events/legacy/ directory 2018-06-05 17:47:26 +02:00
script.options ctdb-scripts: Drop event script CTDB_MANAGED_<service> variables 2018-07-11 11:48:39 +02:00
statd-callout ctdb-scripts: Use "git config" as last resort to parse nfs.conf 2022-07-22 16:09:31 +00:00

README 

This directory contains run-time support scripts for CTDB.

Selected highlights:

  ctdb.init

    An initscript for starting ctdbd at boot time.

  events/

    Eventscripts.  See events/README for more details.

  functions

    Support functions, sourced by eventscripts and other scripts.

  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.