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Date:      Thu, 10 Dec 2015 21:21:24 +0100
From:      Julien Cigar <jcigar@ulb.ac.be>
To:        Terje Elde <terje@elde.net>
Cc:        Emmanuel Vadot <manu@bidouilliste.com>, freebsd-questions@freebsd.org
Subject:   Re: CARP demotion counter
Message-ID:  <20151210202124.GO13477@mordor.lan>
In-Reply-To: <F5A58402-FBA6-4B18-B78A-D38C4AA8D3D4@elde.net>
References:  <20151210182821.GM13477@mordor.lan> <ee17d45f9f7b1a24f76b59b09608d466@megadrive.org> <F5A58402-FBA6-4B18-B78A-D38C4AA8D3D4@elde.net>

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On Thu, Dec 10, 2015 at 08:27:56PM +0100, Terje Elde wrote:
>=20
> > On 10 Dec 2015, at 20:00, Emmanuel Vadot <manu@bidouilliste.com> wrote:
> >=20
> > You need net.inet.carp.preempt=3D1 for MASTER returning to MASTER after=
 a BACKUP state.
>=20
> If all things are otherwise equal, I've come to favor having redundant eq=
uipment not be designated master/slave, but rather "router 1" and "router 2=
" etc, where possible.=20
>=20
> It reduced "oh, the other is just backup"-impulses, promotes caring equal=
ly for either box, and reduces the idea of failover and fallback being sepa=
rate things.=20
>=20
> Also removes "we need to fail back to the master" as a thing to do after =
a failover, while the equality makes it easier to do changes as a matter of=
 routine.=20

You're right, fundamentally I don't have any problem which box is the
MASTER or the BACKUP as long as the CARP failover is done properly
(which is the case).=20

It's just that I would like to understand why the demotion counter is=20
greater than 0 at boot and why the MASTER doesn't return when the cable
is re-plugged (which is the expected behavior I think) :)

>=20
> Terje
>=20
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rg"

--=20
Julien Cigar
Belgian Biodiversity Platform (http://www.biodiversity.be)
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No trees were killed in the creation of this message.
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