[Samba] CTDB and nfs-ganesha
martin at meltin.net
Tue Oct 1 21:46:14 UTC 2019
On Tue, 1 Oct 2019 18:57:43 +0000, Max DiOrio via samba
<samba at lists.samba.org> wrote:
> Hi there – I seem to be having trouble wrapping my brain about the
> CTDB and ganesha configuration. I thought I had it figured out, but
> it doesn’t seem to be doing any checking of the nfs-ganesha service.
> I put nfs-ganesha-callout as executable in /etc/ctdb
> I create nfs-checks-ganesha.d folder in /etc/ctdb and in there I have
You may want to symlink some of the others across, such as
> In my ctdbd.conf file I have:
Aha! In >=4.9 nothing looks at that file anymore. If you run
on it then you'll get some useful suggestions... but keep reading
> # Options to ctdbd, read by ctdbd_wrapper(1)
> # See ctdbd.conf(5) for more information about CTDB configuration variables.
> # Shared recovery lock file to avoid split brain. No default.
> # Do NOT run CTDB without a recovery lock file unless you know exactly
> # what you are doing.
This should be in ctdb.conf:
recovery lock = /run/gluster/shared_storage/.CTDB-lockfile
> # List of nodes in the cluster. Default is below.
> # List of public addresses for providing NAS services. No default.
These are no longer used. The above defaults in /etc/ctdb/ are now
hardwired. Symlinks can be used if necessary.
> # What services should CTDB manage? Default is none.
> # CTDB_MANAGES_SAMBA=yes
> # CTDB_MANAGES_WINBIND=yes
Gone. Now just enable the event scripts.
> # Raise the file descriptor limit for CTDB?
> # CTDB_MAX_OPEN_FILES=10000
Gone. Either do the right thing in the systemd unit file or put a
ulimit command in /etc/sysconfig/ctdb or /etc/default/ctdb (depending
> # Default is to use the log file below instead of syslog.
location = file:/var/log/log.ctdb
However, this is the default so you can just omit it.
If you can use syslog instead, then I strongly suggest you do that
(see ctdb.conf(5) manpage). CTDB's file logging has no useful way of
rotating the logs. There's an open bug, there are plans, but it is
> # Default log level is NOTICE. Want less logging?
log level = DEBUG
Move all of these to /etc/ctdb/script.options.
> But in the logs, I see nothing relating to nfs-ganesha, and when the
> ganesha service fails, the IP’s don’t get migrated and/or the service
> doesn’t get restarted.
> Any ideas?
Yeah, complete rewrite of configuration handling. :-)
At some stage where will be another change some time in the future when:
* service event scripts go to /etc/ctdb/events/service/ - not many
related options to change here...
* failover event scripts go to /etc/ctdb/events/failover/ and most of
the failover-related tunables become script options
After that, things should be very easy to understand... :-)
peace & happiness,
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