178 lines
6.8 KiB
Scheme
178 lines
6.8 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
|
|
;;; Copyright © 2016, 2017, 2018 Ludovic Courtès <ludo@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 the 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)
|
|
#:use-module (ice-9 vlist)
|
|
#:export (%default-rotations
|
|
%rotated-files
|
|
|
|
log-rotation
|
|
log-rotation?
|
|
log-rotation-frequency
|
|
log-rotation-files
|
|
log-rotation-options
|
|
log-rotation-post-rotate
|
|
|
|
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)
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define-record-type* <log-rotation> log-rotation make-log-rotation
|
|
log-rotation?
|
|
(files log-rotation-files) ;list of strings
|
|
(frequency log-rotation-frequency ;symbol
|
|
(default 'weekly))
|
|
(post-rotate log-rotation-post-rotate ;#f | gexp
|
|
(default #f))
|
|
(options log-rotation-options ;list of strings
|
|
(default '())))
|
|
|
|
(define %rotated-files
|
|
;; Syslog files subject to rotation.
|
|
'("/var/log/messages" "/var/log/secure" "/var/log/debug"
|
|
"/var/log/maillog"))
|
|
|
|
(define %default-rotations
|
|
(list (log-rotation ;syslog files
|
|
(files %rotated-files)
|
|
|
|
;; Restart syslogd after rotation.
|
|
(options '("sharedscripts"))
|
|
(post-rotate #~(let ((pid (call-with-input-file "/var/run/syslog.pid"
|
|
read)))
|
|
(kill pid SIGHUP))))
|
|
(log-rotation
|
|
(files '("/var/log/guix-daemon.log")))))
|
|
|
|
(define (log-rotation->config rotation)
|
|
"Return a string-valued gexp representing the rottlog configuration snippet
|
|
for ROTATION."
|
|
(define post-rotate
|
|
(let ((post (log-rotation-post-rotate rotation)))
|
|
(and post
|
|
(program-file "rottlog-post-rotate.scm" post))))
|
|
|
|
#~(let ((post #$post-rotate))
|
|
(string-append (string-join '#$(log-rotation-files rotation) ",")
|
|
" {"
|
|
#$(string-join (log-rotation-options rotation)
|
|
"\n " 'prefix)
|
|
(if post
|
|
(string-append "\n postrotate\n " post
|
|
"\n endscript\n")
|
|
"")
|
|
"\n}\n")))
|
|
|
|
(define (log-rotations->/etc-entries rotations)
|
|
"Return the list of /etc entries for ROTATIONS, a list of <log-rotation>."
|
|
(define (frequency-file frequency rotations)
|
|
(computed-file (string-append "rottlog." (symbol->string frequency))
|
|
#~(call-with-output-file #$output
|
|
(lambda (port)
|
|
(for-each (lambda (str)
|
|
(display str port))
|
|
(list #$@(map log-rotation->config
|
|
rotations)))))))
|
|
|
|
(let* ((frequencies (delete-duplicates
|
|
(map log-rotation-frequency rotations)))
|
|
(table (fold (lambda (rotation table)
|
|
(vhash-consq (log-rotation-frequency rotation)
|
|
rotation table))
|
|
vlist-null
|
|
rotations)))
|
|
(map (lambda (frequency)
|
|
`(,(symbol->string frequency)
|
|
,(frequency-file frequency
|
|
(vhash-foldq* cons '() frequency table))))
|
|
frequencies)))
|
|
|
|
(define (default-jobs rottlog)
|
|
(list #~(job '(next-hour '(0)) ;midnight
|
|
#$(file-append rottlog "/sbin/rottlog"))
|
|
#~(job '(next-hour '(12)) ;noon
|
|
#$(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")))
|
|
(rotations rottlog-rotations ;list of <log-rotation>
|
|
(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))
|
|
(log-rotations->/etc-entries
|
|
(rottlog-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)
|
|
(description
|
|
"Periodically rotate log files using GNU@tie{}Rottlog and GNU@tie{}mcron.
|
|
Old log files are removed or compressed according to the configuration.")
|
|
(extensions (list (service-extension etc-service-type rottlog-etc)
|
|
(service-extension mcron-service-type
|
|
rottlog-jobs-or-default)
|
|
|
|
;; Add Rottlog to the global profile so users can access
|
|
;; the documentation.
|
|
(service-extension profile-service-type
|
|
(compose list rottlog-rottlog))))
|
|
(compose concatenate)
|
|
(extend (lambda (config rotations)
|
|
(rottlog-configuration
|
|
(inherit config)
|
|
(rotations (append (rottlog-rotations config)
|
|
rotations)))))
|
|
(default-value (rottlog-configuration))))
|
|
|
|
;;; admin.scm ends here
|