From: "Artur Wiebe" <artur@4wiebe.de>
To: ptxdist@pengutronix.de
Subject: Re: [ptxdist] ?==?utf-8?q? ?==?utf-8?q? [PATCH] DRAFT:?==?utf-8?q? openssh: make host key generation optional
Date: Mon, 16 Nov 2020 10:45:07 +0100 [thread overview]
Message-ID: <39d-5fb24a00-45-3ccdc880@241239108> (raw)
In-Reply-To: <20201116093600.GB16869@pengutronix.de>
On Monday, November 16, 2020 10:36 CET, Michael Olbrich <m.olbrich@pengutronix.de> wrote:
> On Sun, Nov 15, 2020 at 06:08:56PM +0100, Roland Hieber wrote:
> > On Sun, Nov 15, 2020 at 11:06:12AM +0100, Ladislav Michl wrote:
> > > On Sat, Nov 14, 2020 at 09:34:47PM +0100, Roland Hieber wrote:
> > > > On Fri, Nov 13, 2020 at 06:46:48PM +0100, Ladislav Michl wrote:
> > > > > On Fri, Nov 13, 2020 at 03:19:55PM +0100, Artur Wiebe wrote:
> > > > > > How can openssh.postinst be disabled from within the rule files?
> > > > >
> > > > > The very same could be achieved with symlink in your BSP:
> > > > > projectroot/etc/rc.once.d/openssh -> /dev/null
> > > >
> > > > I don't understand why you want to disable this. The SSH server will not
> > > > start without host keys. Or do you want to install a static version of
> > > > the host keys generated at build time?
> > >
> > > Yes, keys are static, generated at build time. Root filesystem is
> > > read-only.
> > >
> > > > If so, there should be an option for this. But for now, in my opinion,
> > > > disabling OPENSSH_SSHD_GENKEYS will just lead to a broken SSH server.
> > >
> > > As this is easy to solve at BSP level I never thought it could
> > > be a thing :)
> >
> > OK, but at least I would mention it in the kconfig help text. The
>
> Ack.
>
> > openssh recipe could also just pick up /etc/ssh/ssh_host_*_key via
> > install_alternative if this option is disabled.
>
> No. Shared ssh server keys are a bad idea. That's not something I want to
> merge upstream.
This was also my concern...
>
> But there are other use-cases to not use rc-once, e.g. if the server keys
> are generated during provisioning. And not selecting rc-once in this case
> makes sense, so this is acceptable im general.
I still need a way to disable openssh.postinst if OPENSSH_SSHD_GENKEYS is not set.
>
> Michael
>
>
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next prev parent reply other threads:[~2020-11-16 9:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-13 14:19 [ptxdist] [PATCH] DRAFT: " Artur Wiebe
2020-11-13 17:46 ` Ladislav Michl
2020-11-14 20:34 ` Roland Hieber
2020-11-15 10:06 ` Ladislav Michl
2020-11-15 17:08 ` Roland Hieber
2020-11-16 9:36 ` Michael Olbrich
2020-11-16 9:45 ` Artur Wiebe [this message]
2020-11-16 10:32 ` [ptxdist] ?= [PATCH] DRAFT:=?utf-8?q? " Michael Olbrich
2020-11-16 15:09 ` [ptxdist] ?==?utf-8?q? ?==?utf-8?q? ?= [PATCH]?==?utf-8?q? DRAFT:l Artur Wiebe
2020-11-17 6:55 ` [ptxdist] ?= ?==?utf-8?q? " Michael Olbrich
2020-11-16 15:26 ` [ptxdist] ?= [PATCH] DRAFT:=?utf-8?q? openssh: make host key generation optional Denis Osterland-Heim
2020-11-16 19:16 ` [ptxdist] ?==?utf-8?q? ?==?utf-8?q? ?= [PATCH]?==?utf-8?q? DRAFT:l Artur Wiebe
2020-11-17 11:24 ` [ptxdist] ?= ?==?utf-8?q? " Roland Hieber
2020-11-17 11:29 ` [ptxdist] ?= " Roland Hieber
2020-11-16 9:36 ` [ptxdist] [PATCH] DRAFT: openssh: make host key generation optional Michael Olbrich
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