[PATCH] CTDB - add new event daemon
Martin Schwenke
martin at meltin.net
Thu Jul 5 04:44:17 UTC 2018
On Thu, 05 Jul 2018 13:36:27 +1000, Martin Schwenke via samba-technical
<samba-technical at lists.samba.org> wrote:
> On 5 July 2018 12:02:21 pm Amitay Isaacs via samba-technical
> <samba-technical at lists.samba.org> wrote:
> >
> > Martin and I have been preparing for this for a long time. This is
> > the starting point for restructure of ctdb daemon by splitting various
> > daemons. The first one is event daemon. This replaces the current
> > event daemon. There are a couple of significant changes to the new
> > event daemon design.
> >
> > * Support multiple components
> >
> > Many of the new daemons will need to run events. Instead of adding
> > code to run events in every daemon, we now have a single event daemon
> > that will run events for all daemons. Currently it runs events only
> > in "legacy" component. The other main advantage of new eventd will be
> > to avoid running the rest of the daemons as root. Only event daemon
> > needs to run as root since it should be able to start/stop services,
> > modify network configuration etc.
> >
> > * A template for writing daemons and client tools
> >
> > Most of the daemons/client tools will have a standard pattern and
> > event daemon code tries to establish that pattern. This makes writing
> > new daemons and client tools easy and less error-prone. Each daemon
> > will be added in it's own separate directory to improve
> > maintainability.
> >
> > Since the patch set is large, it's not attached. The patches are in
> > my ctdb-eventd branch.
> >
> > https://git.samba.org/?p=amitay/samba.git;a=shortlog;h=refs/heads/ctdb-eventd
> >
> > The first few patches introduce the new eventd (protocol, daemon,
> > client library, tool and tests). The next step is to replace the
> > existing eventd code. The patches that start integrating new eventd,
> > break the CTDB daemon operation. It's possible to completely switch
> > over from old eventd to new eventd in a single patch, but that patch
> > will be too large and difficult to comprehend. Instead, new eventd is
> > introduced step-by-step to keep patches simple but at the cost of
> > broken ctdb daemon till the integration is complete.
> >
> > Please review and push.
>
> Reviewed-by: Martin Schwenke <martin at meltin.net>
>
> Please push... 😀
Now pushed...
peace & happiness,
martin
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