Re: [Postgres-xc-developers] pgxc_ctl C version in progress

[Koichi S. <koi...@gm...>]

The main reason to put it in contrib is that current pgxc_ctl does not
support all the variety of Postgres-XC configuration.   For example,
owner (Linux user) of each node can be different.   It does not
support multiple slaves for datanode/coordinator.

So I think it's better to begin at contrib.   It can be moved to bin
when most people think it's natural.

Regards;
----------
Koichi Suzuki


2013/3/7 Koichi Suzuki <koi...@gm...>:
> Hello,
>
> I'm pleased to publish C version of pgxc_ctl in progress in
> https://github.com/postgres-xc/postgres-xc/tree/pgxc_ctl/contrib/pgxc_ctl
>
> This needs much more improvement but it just works fine for basic
> configuration, without slave, so far.   Good features to this version
> are:
>
> 1. Maintains configuration file in bash.
> 2. More flexible environment, including log.
> 3. If possible, shell scripts including scp and ssh will be done in
> parallel.   C version is quite faster than bash version mainly for
> this reason.
> 4. Log is improved much.   Now more than one pgxc_ctl session can
> write to the same log and the log will be controlled by advisory lock
> so that log lines will not be messed up by another pgxc_ctl session.
> 5. Utilities to clean up gtm (unregister failed node) is now
> integrated into pgxc_ctl.   pgxc_monitor was also integrate so that
> pgxc_ctl can run without any other modules in contrib.
>
> Because original bash version was more than 5k lines, C version is
> even bigger.   I think I should maintain bash version as well for
> people to learn what to do in various XC cluster operation.   Further,
> now Abbas is implementing node addition/removal which should
> be supported by pgxc_ctl as well.
>
> Sorry, no document is available so far.   It is very similar to bash
> version but be a bit different.
>
> After I do necessary work, I'd like to add this to contrib.
>
> Regards;
> ----------
> Koichi Suzuki