You mention 'pacemaker'. Does anyone know of any other open-source projects
that might accomplish the type of remote service dependency checking that I'm
trying to accomplish? For example, if service A on server A depends on service
B on server B is there a project that makes this type of checking possible/easy?
> Date: Fri, 26 Jun 2015 19:14:36 +0300
> From: arvidj...@gmail.com
> To: ljkimme...@hotmail.com
> CC: systemd-devel@lists.freedesktop.org; lnyk...@redhat.com
> Subject: Re: [systemd-devel] SysVInit service migration to systemd
>
> В Fri, 26 Jun 2015 10:02:41 -0500
> Lesley Kimmel <ljkimme...@hotmail.com> пишет:
>
> > Thanks for the information. I've seen that blog before. Unfortunately, it
> > only describes a starting a service that already has a good level of
> > integration with some of the underlying infrastructure of systemd (e.g.
> > dbus). Let me be a little more specific about what I'm trying to accomplish
> > and see if anyone has any thoughts on how systemd could help (or impede me).
> >
> > I have a collection of servers hosting many processes such as Apache HTTPD,
> > a database, and Java application servers. Using init these servers would:
> > a) need to be started in a specific order and b) take a long time to start.
> > To improve both of these scenarios I created a Python service which took an
> > XML configuration file describing the dependencies of the various
> > components. The Python service is started by init and forks so as to not
> > stop the boot process. The forked process then does some basic dependency
> > checking (including remote tests, mostly telnet or pings) before starting
> > local services using init scripts that are not configured to be started by
> > init.
>
> That sounds exactly like what pacemaker does.
>
> >
> > I'm wondering, with systemd, if this Python "control" daemon would be
> > required at all. Does systemd have the ability to check the status of
> > remote servers?
>
> No.
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