[PATCH] Change CTDB to use a Samba-style configuration file
ddiss at samba.org
Tue Jul 17 11:57:00 UTC 2018
On Tue, 17 Jul 2018 20:24:20 +1000, Martin Schwenke via samba-technical wrote:
> On Tue, 17 Jul 2018 11:56:48 +0200, David Disseldorp via
> samba-technical <samba-technical at lists.samba.org> wrote:
> > Looks like this flew under my radar, but just thought I'd mention that
> > it breaks the Linux-HA CTDB resource agent, which makes heavy use of
> > ctdbd command line parameters:
> > https://github.com/ClusterLabs/resource-agents/blob/master/heartbeat/CTDB#L624
> > I guess it should be possible to have the resource agent generate a
> > runtime ctdb configuration file, but it'll likely cause quite some
> > headaches WRT multi-version support.
> Hopefully we can work together to come up with a simple solution.
> I notice that there's already a function called
> generate_ctdb_sysconfig(). I suggest 2 initial changes there, for
> versions Samba <=4.8:
> 1. Change it to generate /etc/ctdb/ctdbd.conf or similar
> We tried to move the general CTDB config to that file from the
> distro-specific files several years ago but not many people listened.
> 2. Switch the daemon options to be config file options in the above file
> ctdbd.conf(5) will tell you the config file options and the daemon
> options that they map to. If you can get rid of the daemon options
> then the work needed for Samba >=4.9 becomes much clearer.
> Then you could have that function alternatively generate the
> new /etc/ctdb/ctdb.conf.
Sounds reasonable, thanks. I'll get started on this.
> The decision about which configuration file to generate could depend on
> the output of "ctdbd --help". I've seen that sort of thing done before
> for other software.
There's already a version check to handle the logfile -> logging change,
so we could also piggy back on top of that:
> There'll be a script out soon to generate a new configuration from an
> old one.
> Others can judge the robustness of this and make
> suggestions to improve it. However, I'm trying to make it as complete
> as possible. I wouldn't suggest using it for this particular case... but
> it might provide some hints for updating generate_ctdb_sysconfig().
> Sorry to cause pain but we're confident that this will be much better
> in the long term...
No worries. If ctdb becomes easier to maintain as a result of these
changes then I'm all for them, was just caught a little off guard in
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