# GNU Guix --- Functional package management for GNU # Copyright © 2016 Eric Bavier # Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès # Copyright © 2013 Andreas Enge # Copyright © 2016 Taylan Ulrich Bayırlı/Kammer # Copyright © 2016, 2018 Mathieu Lirzin # Copyright © 2018, 2021 Julien Lepiller # Copyright © 2019 Timothy Sample # Copyright © 2024 Janneke Nieuwenhuizen # Copyright © 2024 gemmaro # # 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 impli
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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Sou Bunnbu <iyzsong@member.fsf.org>
;;; Copyright © 2018, 2019 Gábor Boskovits <boskovits@gmail.com>
;;; Copyright © 2018, 2019, 2020 Oleg Pykhalov <go.wigust@gmail.com>
;;; Copyright © 2022 Marius Bakke <marius@gnu.org>
;;; Copyright © 2023 Bruno Victal <mirai@makinata.eu>
;;;
;;; 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 configuration)
  #:use-module (gnu services shepherd)
  #:use-module (gnu services web)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages monitoring)
  #:use-module (gnu packages networking)
  #:use-module (gnu system shadow)
  #:use-module (guix gexp)
  #:use-module (guix packages)
  #:use-module (guix records)
  #:use-module (guix utils)
  #:use-module ((guix ui) #:select (display-hint G_))
  #:use-module (ice-9 match)
  #:use-module (ice-9 rdelim)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-35)
  #:export (darkstat-configuration
            darkstat-service-type

            prometheus-node-exporter-configuration
            prometheus-node-exporter-configuration?
            prometheus-node-exporter-configuration-package
            prometheus-node-exporter-web-listen-address
            prometheus-node-exporter-service-type

            vnstat-configuration
            vnstat-configuration?
            vnstat-service-type
            vnstat-configuration-package
            vnstat-configuration-database-directory
            vnstat-configuration-5-minute-hours
            vnstat-configuration-64bit-interface-counters
            vnstat-configuration-always-add-new-interfaces?
            vnstat-configuration-bandwidth-detection?
            vnstat-configuration-bandwidth-detection-interval
            vnstat-configuration-boot-variation
            vnstat-configuration-check-disk-space?
            vnstat-configuration-create-directories?
            vnstat-configuration-daemon-group
            vnstat-configuration-daemon-user
            vnstat-configuration-daily-days
            vnstat-configuration-database-synchronous
            vnstat-configuration-database-write-ahead-logging?
            vnstat-configuration-hourly-days
            vnstat-configuration-log-file
            vnstat-configuration-max-bandwidth
            vnstat-configuration-max-bw
            vnstat-configuration-monthly-months
            vnstat-configuration-month-rotate
            vnstat-configuration-month-rotate-affects-years?
            vnstat-configuration-offline-save-interval
            vnstat-configuration-pid-file
            vnstat-configuration-poll-interval
            vnstat-configuration-rescan-database-on-save?
            vnstat-configuration-save-interval
            vnstat-configuration-save-on-status-change?
            vnstat-configuration-time-sync-wait
            vnstat-configuration-top-day-entries
            vnstat-configuration-trafficless-entries?
            vnstat-configuration-update-file-owner?
            vnstat-configuration-update-interval
            vnstat-configuration-use-logging
            vnstat-configuration-use-utc?
            vnstat-configuration-yearly-years

            zabbix-server-configuration
            zabbix-server-service-type
            zabbix-agent-configuration
            zabbix-agent-service-type
            zabbix-front-end-configuration
            zabbix-front-end-service-type
            %zabbix-front-end-configuration-nginx))


;;;
;;; 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 '(user-processes 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 statistics reports over
HTTP.")
   (extensions
    (list (service-extension account-service-type
                             (const %darkstat-accounts))
          (service-extension shepherd-root-service-type
                             (compose list darkstat-shepherd-service))))))


;;;
;;; Prometheus node exporter
;;;

(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"))
  (textfile-directory prometheus-node-exporter-textfile-directory
                      (default "/var/lib/prometheus/node-exporter"))
  (extra-options      prometheus-node-exporter-extra-options
                      (default '())))

(define %prometheus-node-exporter-accounts
  (list (user-account
         (name "prometheus-node-exporter")
         (group "prometheus-node-exporter")
         (system? #t)
         (comment "Prometheus node exporter daemon user")
         (home-directory "/var/empty")
         (shell (file-append shadow "/sbin/nologin")))
        (user-group
         (name "prometheus-node-exporter")
         (system? #t))))

(define prometheus-node-exporter-shepherd-service
  (match-lambda
    (( $ <prometheus-node-exporter-configuration>
         package web-listen-address textfile-directory extra-options)
     (list
      (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
                       #$@(if textfile-directory
                              (list "--collector.textfile.directory"
                                    textfile-directory)
                              '())
                       #$@extra-options)
                 #:user "prometheus-node-exporter"
                 #:group "prometheus-node-exporter"
                 #:log-file "/var/log/prometheus-node-exporter.log"))
       (stop #~(make-kill-destructor)))))))

(define (prometheus-node-exporter-activation config)
  (with-imported-modules '((guix build utils))
    #~(let ((textfile-directory