Re: informations about boot sequence (Re: F15 - mysql start problem)

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On Mon, 09.05.11 17:04, Tom Lane (tgl@xxxxxxxxxx) wrote:

> 
> Lennart Poettering <mzerqung@xxxxxxxxxxx> writes:
> > So, instead of making mysql/postgres start up slower for everybody, i'd
> > rather see this solution:
> 
> > a) people who manually change the IP address fo mysql to bind on
> > specific ip addresses, manually also enable
> > NetworkManager-wait-online.service.
> 
> > or:
> 
> > b) the servers are fixed to listen to netlink.
> 
> > or:
> 
> > c) They get fixed to use IP_FREEBIND.
> 
> > All three of the solutions are nicer than adding unnecessary
> > dependencies for them.
> 
> I think you've failed to grasp the point.  What you are proposing is to
> hack the servers with patches that are rather unlikely to be accepted by
> either upstream, in order to solve *one* of the possible configuration
> issues that might cause them to not start correctly before the basic
> expected network support services are available.  In particular, so far
> as I can tell from the discussion at bug #703215, systemd is entirely
> incapable of supporting services that need to do DNS lookups at start.
> It's not acceptable to tell people that they mustn't use configurations
> that require that; they'll just go looking for another solution that
> does do what they want.
> 
> I grow weary of systemd apologists saying that services should be hacked
> to work around systemd's limitations.  systemd exists to serve the
> daemons, not vice versa.  If you can't fix these problems, people are
> going to decide that systemd is a failed experiment.

Hmm? which systemd problem in particular? I don't see how systemd
changes anything in regards to networking here...

Lennart

-- 
Lennart Poettering - Red Hat, Inc.
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