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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Sou Bunnbu <iyzsong@member.fsf.org>
;;; Copyright © 2018 Gábor Boskovits <boskovits@gmail.com>
;;;
;;; 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 monitoring)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu packages admin)
#:use-module (gnu packages monitoring)
#:use-module (gnu system shadow)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (ice-9 match)
#:export (darkstat-configuration
prometheus-node-exporter-configuration
darkstat-service-type
prometheus-node-exporter-service-type))
;;;
;;; darkstat
;;;
(define-record-type* <darkstat-configuration>
darkstat-configuration make-darkstat-configuration darkstat-configuration?
(package darkstat-configuration-package
(default darkstat))
(interface darkstat-configuration-interface)
(port darkstat-configuration-port
(default "667"))
(bind-address darkstat-configuration-bind-address
(default "127.0.0.1"))
(base darkstat-configuration-base
(default "/")))
(define %darkstat-accounts
(list (user-account
(name "darkstat")
(group "darkstat")
(system? #t)
(comment "darkstat daemon user")
(home-directory "/var/lib/darkstat")
(shell (file-append shadow "/sbin/nologin")))
(user-group
(name "darkstat")
(system? #t))))
(define darkstat-shepherd-service
(match-lambda
(($ <darkstat-configuration>
package interface port bind-address base)
(shepherd-service
(documentation "Network statistics gatherer.")
(provision '(darkstat))
(requirement '(networking))
(start #~(make-forkexec-constructor
(list #$(file-append package "/sbin/darkstat")
"-i" #$interface
"-p" #$port
"-b" #$bind-address
"--base" #$base
"--syslog" "--no-daemon"
"--chroot" "/var/lib/darkstat"
"--user" "darkstat"
"--import" "darkstat.db"
"--export" "darkstat.db")))
(stop #~(make-kill-destructor))))))
(define darkstat-service-type
(service-type
(name 'darkstat)
(description
"Run @command{darkstat} to serve network traffic statictics reports over
HTTP.")
(extensions
(list (service-extension account-service-type
(const %darkstat-accounts))
(service-extension shepherd-root-service-type
(compose list darkstat-shepherd-service))))))
(define-record-type* <prometheus-node-exporter-configuration>
prometheus-node-exporter-configuration
make-prometheus-node-exporter-configuration
prometheus-node-exporter-configuration?
(package prometheus-node-exporter-configuration-package
(default go-github-com-prometheus-node-exporter))
(web-listen-address prometheus-node-exporter-web-listen-address
(default ":9100")))
(define prometheus-node-exporter-shepherd-service
(match-lambda
(( $ <prometheus-node-exporter-configuration>
package web-listen-address)
(shepherd-service
(documentation "Prometheus node exporter.")
(provision '(prometheus-node-exporter))
(requirement '(networking))
(start #~(make-forkexec-constructor
(list #$(file-append package "/bin/node_exporter")
"--web.listen-address" #$web-listen-address)))
(stop #~(make-kill-destructor))))))
(define prometheus-node-exporter-service-type
(service-type
(name 'prometheus-node-exporter)
(description
"Run @command{node_exporter} to serve hardware and OS metrics to
prometheus.")
(extensions
(list (service-extension
shepherd-root-service-type
(compose list prometheus-node-exporter-shepherd-service))))))
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