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authorJan Nieuwenhuizen <janneke@gnu.org>2016-09-08 01:20:43 +0200
committerLudovic Courtès <ludo@gnu.org>2016-10-03 00:38:28 +0200
commit92c03a871559590f7f3b0640e3a6cfd83c8044e6 (patch)
treed0b9b4708ac4c2b189424a8219a084de1e1ccbc0 /gnu/services/admin.scm
parentd79e8f65b5c0b9726bef4cc89e5fe95bc824b929 (diff)
downloadguix-92c03a871559590f7f3b0640e3a6cfd83c8044e6.tar
guix-92c03a871559590f7f3b0640e3a6cfd83c8044e6.tar.gz
services: Add rottlog.
* gnu/services/admin.scm: New file. * gnu/local.mk (GNU_SYSTEM_MODULES): Add it. * doc/guix.texi (Log Rotation): New node. Co-authored-by: Ludovic Courtès <ludo@gnu.org>
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of thye GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu services admin)
+ #:use-module (gnu packages admin)
+ #:use-module (gnu packages base)
+ #:use-module (gnu services)
+ #:use-module (gnu services mcron)
+ #:use-module (gnu services shepherd)
+ #:use-module (guix gexp)
+ #:use-module (guix packages)
+ #:use-module (guix records)
+ #:use-module (srfi srfi-1)
+ #:export (%default-rotations
+ %rotated-files
+ rottlog-configuration
+ rottlog-configuration?
+ rottlog-service
+ rottlog-service-type))
+
+;;; Commentary:
+;;;
+;;; This module implements configuration of rottlog by writing
+;;; /etc/rottlog/{rc,hourly|daily|weekly}. Example usage
+;;;
+;;; (mcron-service)
+;;; (service rottlog-service-type (rottlog-configuration))
+;;;
+;;; Code:
+
+(define %rotated-files
+ '("/var/log/messages" "/var/log/secure"))
+
+(define (syslog-rotation-config file)
+ #~(#$file " {
+ sharedscripts
+ postrotate
+ " #$coreutils "/bin/kill -HUP $(cat /var/run/syslog.pid) 2> /dev/null
+ endscript
+}
+"))
+
+(define (simple-rotation-config file)
+ (string-append file " {
+ sharedscripts
+ postrotate
+ endscript
+}
+"))
+
+(define %default-rotations
+ `(("weekly"
+ ,(computed-file "rottlog.weekly"
+ #~(call-with-output-file #$output
+ (lambda (port)
+ (display
+ (string-join
+ (apply append '#$(map syslog-rotation-config
+ %rotated-files))
+ "")
+ port)
+ (display #$(simple-rotation-config
+ "/var/log/shepherd.log")
+ port)))))))
+
+(define (default-jobs rottlog)
+ (list #~(job '(next-hour '(0)) ;midnight
+ (lambda ()
+ (system* #$(file-append rottlog "/sbin/rottlog"))))
+ #~(job '(next-hour '(12)) ;noon
+ (lambda ()
+ (system* #$(file-append rottlog "/sbin/rottlog"))))))
+
+(define-record-type* <rottlog-configuration>
+ rottlog-configuration make-rottlog-configuration
+ rottlog-configuration?
+ (rottlog rottlog-rottlog ;package
+ (default rottlog))
+ (rc-file rottlog-rc-file ;file-like
+ (default (file-append rottlog "/etc/rc")))
+ (periodic-rotations rottlog-periodic-rotations ;list of (name file) tuples
+ (default %default-rotations))
+ (jobs rottlog-jobs ;list of <mcron-job>
+ (default #f)))
+
+(define (rottlog-etc config)
+ `(("rottlog" ,(file-union "rottlog"
+ (cons `("rc" ,(rottlog-rc-file config))
+ (rottlog-periodic-rotations config))))))
+
+(define (rottlog-jobs-or-default config)
+ (or (rottlog-jobs config)
+ (default-jobs (rottlog-rottlog config))))
+
+(define rottlog-service-type
+ (service-type
+ (name 'rottlog)
+ (extensions (list (service-extension etc-service-type rottlog-etc)
+ (service-extension mcron-service-type
+ rottlog-jobs-or-default)))))
+
+;;; admin.scm ends here