From: Ricardo Wurmus <rekado@elephly.net>
To: Christopher Allan Webber <cwebber@dustycloud.org>
Cc: guix-devel@gnu.org
Subject: Re: (Exposing?) config files and non-start/stop operations
Date: Sat, 26 Nov 2016 14:47:22 +0100 [thread overview]
Message-ID: <87eg1yz72t.fsf@elephly.net> (raw)
In-Reply-To: <87fumghvdc.fsf@dustycloud.org>
Christopher Allan Webber <cwebber@dustycloud.org> writes:
> - We could also have a shepherd action like "herd config mediagoblin"
> that would merely spit out the configuration file path... so someone
> could do something like:
> $ foo-db dump-db --config `herd config foo-db`
Here’s another similar idea:
herd environment <service> -- some command
The environment for a service may be represented by a bunch of
environment variables. “some command” then runs within this
environment and can access the variables.
So if “foo-db” can read its configuration file from FOO_DB_CONFIG the
environment definition would be something like
#~(("FOO_DB_CONFIG" . (string-append #$foo-db "/etc/config")))
In this case a user could do
herd environment foo-db -- foo-db dump-db
If it doesn’t respect FOO_DB_CONFIG one could do
herd environment foo-db -- 'foo-db dump-db --config $FOO_DB_CONFIG'
This is all just a crummy bash translation of a reader monad.
--
Ricardo
GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC
http://elephly.net
next prev parent reply other threads:[~2016-11-26 13:47 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-20 18:47 (Exposing?) config files and non-start/stop operations Christopher Allan Webber
2016-11-20 22:34 ` Christopher Allan Webber
2016-11-21 4:54 ` Chris Marusich
2016-11-21 16:18 ` Christopher Allan Webber
2016-11-21 16:53 ` Christopher Allan Webber
2016-11-22 4:13 ` Chris Marusich
2016-11-22 17:21 ` Christopher Allan Webber
2016-11-22 22:59 ` Ludovic Courtès
2016-11-23 5:28 ` Chris Marusich
2016-11-22 22:57 ` Ludovic Courtès
2016-11-23 22:03 ` Christopher Allan Webber
2016-11-24 13:31 ` Ludovic Courtès
2016-11-25 7:27 ` Christopher Allan Webber
2016-11-26 12:40 ` Chris Marusich
2016-11-27 15:39 ` Christopher Allan Webber
2016-11-29 3:06 ` Chris Marusich
2016-11-26 13:47 ` Ricardo Wurmus [this message]
2016-11-26 17:40 ` Ludovic Courtès
2016-11-27 15:47 ` Christopher Allan Webber
2016-11-26 17:43 ` Ludovic Courtès
2016-11-27 15:48 ` Christopher Allan Webber
2016-11-21 14:18 ` Ludovic Courtès
2016-11-21 16:21 ` Christopher Allan Webber
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