From: "Ludovic Courtès" <ludo@gnu.org>
To: Arun Isaac <arunisaac@systemreboot.net>
Cc: 28128@debbugs.gnu.org
Subject: [bug#28128] [PATCH 2/2] scripts: system: Support container network sharing.
Date: Mon, 18 Mar 2019 09:37:59 +0100 [thread overview]
Message-ID: <874l80tw60.fsf@gnu.org> (raw)
In-Reply-To: <cu71s39usgi.fsf@systemreboot.net> (Arun Isaac's message of "Fri, 15 Mar 2019 01:41:25 +0530")
Hi,
Arun Isaac <arunisaac@systemreboot.net> skribis:
>> 2. The notion of “shared network” is very much a container (or VM)
>> thing, so somehow it still doesn’t feel right to me that (gnu
>> system) has to be aware of these special cases.
>>
>> I think the ‘host-database-service-type’ wouldn’t have this problem, but
>> maybe it has other issues. I guess this needs more experimentation,
>> sorry for not coming up with clearer ideas!
>
> If these services (the shared-network service, the hosts-database
> service or indeed any other service) had access to the operating-system
> object `os', then they would be able to operate independently without
> having to be extended by `essential-services'. Is this possible somehow?
> Is it a good idea to give services access to the os fields?
It’s not easily possible, and I think it would be a bad idea: if every
service has access to every ‘operating-system’ field, that gives you
more flexibility, but it’s also much harder to reason about what
happens, compared to the current extension graph (the NixOS “module”
system works like that: every service can access every bit of the whole
configuration, but IMO that makes it quite hard to understand.)
What could be useful is “self-referential” records, where a field can
refer to the record it belongs do. So we’d do:
(define-record-type* <operating-system>
;; …
(services operating-system-services
(self-referential? #t) (default essential-services)))
whereby ‘essential-services’ would be passed the <operating-system>
record somehow.
That needs more thought…
Thanks,
Ludo’.
next prev parent reply other threads:[~2019-03-18 8:43 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-17 19:13 [bug#28128] [PATCH] scripts: system: Add support for container network sharing Christopher Baines
2017-09-04 21:47 ` Christopher Baines
2017-09-19 21:39 ` Ludovic Courtès
2017-09-20 7:04 ` Christopher Baines
2019-02-19 7:46 ` Arun Isaac
2019-02-19 21:50 ` Christopher Baines
2019-02-20 11:57 ` Ricardo Wurmus
2019-02-20 19:22 ` Arun Isaac
2019-03-04 13:38 ` Ludovic Courtès
2019-03-08 10:51 ` Arun Isaac
2019-03-10 17:20 ` Ludovic Courtès
2019-03-11 18:52 ` Arun Isaac
2019-03-13 9:36 ` [bug#28128] [PATCH 0/2] Support " Arun Isaac
2019-03-13 9:36 ` [bug#28128] [PATCH 1/2] shepherd: Move nscd-socket to (gnu system file-systems) Arun Isaac
2019-03-13 9:36 ` [bug#28128] [PATCH 2/2] scripts: system: Support container network sharing Arun Isaac
2019-03-13 11:34 ` Ludovic Courtès
2019-03-14 20:11 ` Arun Isaac
2019-03-18 8:37 ` Ludovic Courtès [this message]
2019-03-21 10:17 ` Arun Isaac
2019-03-22 17:29 ` Ludovic Courtès
2019-03-25 20:37 ` Arun Isaac
2019-05-10 12:54 ` Arun Isaac
2019-05-12 21:23 ` Ludovic Courtès
2019-05-13 8:30 ` Arun Isaac
2019-05-13 13:43 ` Ludovic Courtès
2019-05-13 21:26 ` bug#28128: " Arun Isaac
2019-05-14 7:02 ` [bug#28128] " Christopher Baines
2019-05-14 9:00 ` Arun Isaac
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