0e3bb48d36
* gnu/services/monitoring.scm (vnstat-service-type): New variable. * doc/guix.texi (Monitoring Services): Document it. Signed-off-by: Ludovic Courtès <ludo@gnu.org>
1197 lines
44 KiB
Scheme
1197 lines
44 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2018 Sou Bunnbu <iyzsong@member.fsf.org>
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;;; Copyright © 2018, 2019 Gábor Boskovits <boskovits@gmail.com>
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;;; Copyright © 2018, 2019, 2020 Oleg Pykhalov <go.wigust@gmail.com>
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;;; Copyright © 2022 Marius Bakke <marius@gnu.org>
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;;; Copyright © 2023 Bruno Victal <mirai@makinata.eu>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu services monitoring)
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#:use-module (gnu services)
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#:use-module (gnu services configuration)
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#:use-module (gnu services shepherd)
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#:use-module (gnu services web)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages monitoring)
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#:use-module (gnu packages networking)
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#:use-module (gnu system shadow)
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#:use-module (guix gexp)
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#:use-module (guix packages)
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#:use-module (guix records)
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#:use-module (guix utils)
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#:use-module ((guix ui) #:select (display-hint G_))
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#:use-module (ice-9 match)
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#:use-module (ice-9 rdelim)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-35)
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#:export (darkstat-configuration
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darkstat-service-type
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prometheus-node-exporter-configuration
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prometheus-node-exporter-configuration?
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prometheus-node-exporter-configuration-package
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prometheus-node-exporter-web-listen-address
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prometheus-node-exporter-service-type
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vnstat-configuration
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vnstat-configuration?
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vnstat-service-type
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vnstat-configuration-package
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vnstat-configuration-database-directory
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vnstat-configuration-5-minute-hours
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vnstat-configuration-64bit-interface-counters
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vnstat-configuration-always-add-new-interfaces?
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vnstat-configuration-bandwidth-detection?
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vnstat-configuration-bandwidth-detection-interval
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vnstat-configuration-boot-variation
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vnstat-configuration-check-disk-space?
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vnstat-configuration-create-directories?
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vnstat-configuration-daemon-group
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vnstat-configuration-daemon-user
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vnstat-configuration-daily-days
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vnstat-configuration-database-synchronous
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vnstat-configuration-database-write-ahead-logging?
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vnstat-configuration-hourly-days
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vnstat-configuration-log-file
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vnstat-configuration-max-bandwidth
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vnstat-configuration-max-bw
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vnstat-configuration-monthly-months
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vnstat-configuration-month-rotate
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vnstat-configuration-month-rotate-affects-years?
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vnstat-configuration-offline-save-interval
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vnstat-configuration-pid-file
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vnstat-configuration-poll-interval
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vnstat-configuration-rescan-database-on-save?
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vnstat-configuration-save-interval
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vnstat-configuration-save-on-status-change?
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vnstat-configuration-time-sync-wait
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vnstat-configuration-top-day-entries
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vnstat-configuration-trafficless-entries?
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vnstat-configuration-update-file-owner?
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vnstat-configuration-update-interval
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vnstat-configuration-use-logging
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vnstat-configuration-use-utc?
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vnstat-configuration-yearly-years
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zabbix-server-configuration
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zabbix-server-service-type
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zabbix-agent-configuration
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zabbix-agent-service-type
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zabbix-front-end-configuration
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zabbix-front-end-service-type
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%zabbix-front-end-configuration-nginx))
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;;;
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;;; darkstat
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;;;
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(define-record-type* <darkstat-configuration>
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darkstat-configuration make-darkstat-configuration darkstat-configuration?
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(package darkstat-configuration-package
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(default darkstat))
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(interface darkstat-configuration-interface)
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(port darkstat-configuration-port
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(default "667"))
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(bind-address darkstat-configuration-bind-address
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(default "127.0.0.1"))
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(base darkstat-configuration-base
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(default "/")))
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(define %darkstat-accounts
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(list (user-account
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(name "darkstat")
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(group "darkstat")
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(system? #t)
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(comment "darkstat daemon user")
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(home-directory "/var/lib/darkstat")
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(shell (file-append shadow "/sbin/nologin")))
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(user-group
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(name "darkstat")
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(system? #t))))
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(define darkstat-shepherd-service
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(match-lambda
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(($ <darkstat-configuration>
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package interface port bind-address base)
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(shepherd-service
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(documentation "Network statistics gatherer.")
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(provision '(darkstat))
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(requirement '(networking))
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(start #~(make-forkexec-constructor
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(list #$(file-append package "/sbin/darkstat")
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"-i" #$interface
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"-p" #$port
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"-b" #$bind-address
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"--base" #$base
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"--syslog" "--no-daemon"
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"--chroot" "/var/lib/darkstat"
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"--user" "darkstat"
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"--import" "darkstat.db"
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"--export" "darkstat.db")))
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(stop #~(make-kill-destructor))))))
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(define darkstat-service-type
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(service-type
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(name 'darkstat)
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(description
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"Run @command{darkstat} to serve network traffic statistics reports over
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HTTP.")
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(extensions
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(list (service-extension account-service-type
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(const %darkstat-accounts))
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(service-extension shepherd-root-service-type
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(compose list darkstat-shepherd-service))))))
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;;;
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;;; Prometheus node exporter
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;;;
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(define-record-type* <prometheus-node-exporter-configuration>
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prometheus-node-exporter-configuration
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make-prometheus-node-exporter-configuration
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prometheus-node-exporter-configuration?
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(package prometheus-node-exporter-configuration-package
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(default go-github-com-prometheus-node-exporter))
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(web-listen-address prometheus-node-exporter-web-listen-address
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(default ":9100"))
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(textfile-directory prometheus-node-exporter-textfile-directory
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(default "/var/lib/prometheus/node-exporter"))
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(extra-options prometheus-node-exporter-extra-options
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(default '())))
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(define %prometheus-node-exporter-accounts
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(list (user-account
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(name "prometheus-node-exporter")
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(group "prometheus-node-exporter")
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(system? #t)
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(comment "Prometheus node exporter daemon user")
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(home-directory "/var/empty")
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(shell (file-append shadow "/sbin/nologin")))
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(user-group
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(name "prometheus-node-exporter")
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(system? #t))))
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(define prometheus-node-exporter-shepherd-service
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(match-lambda
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(( $ <prometheus-node-exporter-configuration>
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package web-listen-address textfile-directory extra-options)
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(list
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(shepherd-service
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(documentation "Prometheus node exporter.")
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(provision '(prometheus-node-exporter))
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(requirement '(networking))
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(start #~(make-forkexec-constructor
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(list #$(file-append package "/bin/node_exporter")
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"--web.listen-address" #$web-listen-address
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#$@(if textfile-directory
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(list "--collector.textfile.directory"
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textfile-directory)
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'())
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#$@extra-options)
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#:user "prometheus-node-exporter"
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#:group "prometheus-node-exporter"
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#:log-file "/var/log/prometheus-node-exporter.log"))
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(stop #~(make-kill-destructor)))))))
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(define (prometheus-node-exporter-activation config)
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(with-imported-modules '((guix build utils))
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#~(let ((textfile-directory
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#$(prometheus-node-exporter-textfile-directory config)))
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(use-modules (guix build utils))
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(when textfile-directory
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(let ((user (getpw "prometheus-node-exporter")))
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#t
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(mkdir-p textfile-directory)
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(chown textfile-directory (passwd:uid user) (passwd:gid user))
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(chmod textfile-directory #o775))))))
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(define prometheus-node-exporter-service-type
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(service-type
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(name 'prometheus-node-exporter)
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(description
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"Run @command{node_exporter} to serve hardware and OS metrics to
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Prometheus.")
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(extensions
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(list
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(service-extension account-service-type
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(const %prometheus-node-exporter-accounts))
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(service-extension activation-service-type
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prometheus-node-exporter-activation)
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(service-extension shepherd-root-service-type
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prometheus-node-exporter-shepherd-service)))
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(default-value (prometheus-node-exporter-configuration))))
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;;;
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;;; vnstat daemon
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;;;
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(define* (camelfy-field-name field-name #:key (dromedary? #f))
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(match (string-split (symbol->string field-name) #\-)
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((head tail ...)
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(string-join (cons (if dromedary? head (string-upcase head 0 1))
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(map (cut string-upcase <> 0 1) tail)) ""))))
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(define (strip-trailing-?-character field-name)
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"Drop rightmost '?' character"
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(let ((str (symbol->string field-name)))
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(if (string-suffix? "?" str)
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(string->symbol (string-drop-right str 1))
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field-name)))
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(define (vnstat-serialize-string field-name value)
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#~(format #f "~a ~s~%"
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#$(camelfy-field-name field-name)
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#$value))
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(define vnstat-serialize-integer vnstat-serialize-string)
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(define (vnstat-serialize-boolean field-name value)
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#~(format #f "~a ~a~%"
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#$(camelfy-field-name (strip-trailing-?-character field-name))
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#$(if value 1 0)))
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(define (vnstat-serialize-alist field-name value)
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(generic-serialize-alist string-append
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(lambda (iface val)
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(vnstat-serialize-integer
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(format #f "MaxBW~a" iface) val))
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value))
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(define (vnstat-serialize-user-account field-name value)
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(vnstat-serialize-string field-name (user-account-name value)))
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(define (vnstat-serialize-user-group field-name value)
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(vnstat-serialize-string field-name (user-group-name value)))
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(define-maybe string (prefix vnstat-))
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(define-maybe integer (prefix vnstat-))
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(define-maybe boolean (prefix vnstat-))
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(define-maybe alist (prefix vnstat-))
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(define-maybe user-account (prefix vnstat-))
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(define-maybe user-group (prefix vnstat-))
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(define %vnstat-user
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(user-account
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(name "vnstat")
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(group "vnstat")
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(system? #t)
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(home-directory "/var/empty")
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(shell (file-append shadow "/sbin/nologin"))))
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(define %vnstat-group
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(user-group
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(name "vnstat")
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(system? #t)))
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;; Documentation strings from vnstat.conf manpage adapted to texinfo.
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;; vnstat checkout: v2.10, commit b3408af1c609aa6265d296cab7bfe59a61d7cf70
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;; Do not reflow these strings or drop the initial \ escape as it makes it
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;; harder to diff against the manpage.
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(define-configuration vnstat-configuration
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(package
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(file-like vnstat)
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"The vnstat package."
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empty-serializer)
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(database-directory
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(string "/var/lib/vnstat")
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"\
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Specifies the directory where the database is to be stored.
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A full path must be given and a leading '/' isn't required."
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(serializer
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(lambda (_ value)
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(vnstat-serialize-string 'database-dir value))))
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(5-minute-hours
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(maybe-integer 48)
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"\
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Data retention duration for the 5 minute resolution entries. The configuration
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defines for how many past hours entries will be stored. Set to @code{-1} for
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unlimited entries or to @code{0} to disable the data collection of this
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resolution.")
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(64bit-interface-counters
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(maybe-integer -2)
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"\
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Select interface counter handling. Set to @code{1} for defining that all interfaces
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use 64-bit counters on the kernel side and @code{0} for defining 32-bit counter. Set
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to @code{-1} for using the old style logic used in earlier versions where counter
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values within 32-bits are assumed to be 32-bit and anything larger is assumed to
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be a 64-bit counter. This may produce false results if a 64-bit counter is
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reset within the 32-bits. Set to @code{-2} for using automatic detection based on
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available kernel datastructures.")
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(always-add-new-interfaces?
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(maybe-boolean #t)
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"\
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Enable or disable automatic creation of new database entries for interfaces not
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currently in the database even if the database file already exists when the
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daemon is started. New database entries will also get created for new interfaces
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seen while the daemon is running. Pseudo interfaces @samp{lo}, @samp{lo0} and @samp{sit0} are always
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excluded from getting added.")
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(bandwidth-detection?
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(maybe-boolean #t)
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"\
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Try to automatically detect
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@var{max-bandwidth}
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value for each monitored interface. Mostly only ethernet interfaces support
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this feature.
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@var{max-bandwidth}
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will be used as fallback value if detection fails. Any interface specific
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@var{max-BW}
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configuration will disable the detection for the specified interface.
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In Linux, the detection is disabled for tun interfaces due to the
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Linux kernel always reporting 10 Mbit regardless of the used real interface.")
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(bandwidth-detection-interval
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(maybe-integer 5)
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"\
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How often in minutes interface specific detection of
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@var{max-bandwidth}
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is done for detecting possible changes when
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@var{bandwidth-detection}
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is enabled. Can be disabled by setting to @code{0}. Value range: @samp{0}..@samp{30}")
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(boot-variation
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(maybe-integer 15)
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"\
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Time in seconds how much the boot time reported by system kernel can variate
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between updates. Value range: @samp{0}..@samp{300}")
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(check-disk-space?
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(maybe-boolean #t)
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"\
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Enable or disable the availability check of at least some free disk space before
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a database write.")
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(create-directories?
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(maybe-boolean #t)
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"\
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Enable or disable the creation of directories when a configured path doesn't
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exist. This includes @var{database-directory}."
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(serializer
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(lambda (_ value)
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(if (maybe-value-set? value)
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(vnstat-serialize-boolean 'create-dirs value) ""))))
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;; Note: Documentation for daemon-group and daemon-user adapted
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;; for user-group and user-account record-types.
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(daemon-group
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(maybe-user-group %vnstat-group)
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"\
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Specify the group to which the daemon process should switch during startup.
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Set to @code{%unset-value} to disable group switching.")
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||
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||
(daemon-user
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(maybe-user-account %vnstat-user)
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"\
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Specify the user to which the daemon process should switch during startup.
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Set to @code{%unset-value} to disable user switching.")
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||
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||
(daily-days
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||
(maybe-integer 62)
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"\
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||
Data retention duration for the one day resolution entries. The configuration
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||
defines for how many past days entries will be stored. Set to @code{-1} for
|
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unlimited entries or to @code{0} to disable the data collection of this
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resolution.")
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||
(database-synchronous
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(maybe-integer -1)
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"\
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Change the setting of the SQLite \"synchronous\" flag which controls how much
|
||
care is taken to ensure disk writes have fully completed when writing data to
|
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the database before continuing other actions. Higher values take extra steps
|
||
to ensure data safety at the cost of slower performance. A value of @code{0} will
|
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result in all handling being left to the filesystem itself. Set to @code{-1} to
|
||
select the default value according to database mode controlled by
|
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@var{database-write-ahead-logging}
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setting. See SQLite documentation for more details regarding values from @code{1}
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to @code{3}. Value range: @samp{-1}..@samp{3}")
|
||
|
||
(database-write-ahead-logging?
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(maybe-boolean #f)
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"\
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Enable or disable SQLite Write-Ahead Logging mode for the database. See SQLite
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documentation for more details and note that support for read-only operations
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isn't available in older SQLite versions.")
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||
|
||
(hourly-days
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||
(maybe-integer 4)
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||
"\
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||
Data retention duration for the one hour resolution entries. The configuration
|
||
defines for how many past days entries will be stored. Set to @code{-1} for
|
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unlimited entries or to @code{0} to disable the data collection of this
|
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resolution.")
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||
|
||
(log-file
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||
maybe-string
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"\
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Specify log file path and name to be used if @var{use-logging} is set to @code{1}.")
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||
|
||
(max-bandwidth
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maybe-integer
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"\
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Maximum bandwidth for all interfaces. If the interface specific traffic
|
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exceeds the given value then the data is assumed to be invalid and rejected.
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Set to 0 in order to disable the feature. Value range: @samp{0}..@samp{50000}")
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||
;; documentation adapted for alist type
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(max-bw
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maybe-alist
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"\
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Same as
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@var{max-bandwidth}
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but can be used for setting individual limits
|
||
for selected interfaces. This is an association list of interfaces
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as strings to integer values. For example,
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@lisp
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||
(max-bw
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`((\"eth0\" . 15000)
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(\"ppp0\" . 10000)))
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@end lisp
|
||
@var{bandwidth-detection}
|
||
is disabled on an interface specific level for each
|
||
@var{max-bw}
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||
configuration. Value range: @samp{0}..@samp{50000}"
|
||
(serializer
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||
(lambda (field-name value)
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||
(if (maybe-value-set? value)
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||
(vnstat-serialize-alist field-name value) ""))))
|
||
|
||
(monthly-months
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(maybe-integer 25)
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||
"\
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||
Data retention duration for the one month resolution entries. The configuration
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||
defines for how many past months entries will be stored. Set to @code{-1} for
|
||
unlimited entries or to @code{0} to disable the data collection of this
|
||
resolution.")
|
||
|
||
(month-rotate
|
||
(maybe-integer 1)
|
||
"\
|
||
Day of month that months are expected to change. Usually set to
|
||
1 but can be set to alternative values for example for tracking
|
||
monthly billed traffic where the billing period doesn't start on
|
||
the first day. For example, if set to 7, days of February up to and
|
||
including the 6th will count for January. Changing this option will
|
||
not cause existing data to be recalculated. Value range: @samp{1}..@samp{28}")
|
||
|
||
(month-rotate-affects-years?
|
||
(maybe-boolean #f)
|
||
"\
|
||
Enable or disable
|
||
@var{month-rotate}
|
||
also affecting yearly data. Applicable only when
|
||
@var{month-rotate}
|
||
has a value greater than one.")
|
||
|
||
(offline-save-interval
|
||
(maybe-integer 30)
|
||
"\
|
||
How often in minutes cached interface data is saved to file when all monitored
|
||
interfaces are offline. Value range:
|
||
@var{save-interval}..@samp{60}")
|
||
|
||
(pid-file
|
||
(maybe-string "/var/run/vnstat/vnstatd.pid")
|
||
"\
|
||
Specify pid file path and name to be used.")
|
||
|
||
(poll-interval
|
||
(maybe-integer 5)
|
||
"\
|
||
How often in seconds interfaces are checked for status changes.
|
||
Value range: @samp{2}..@samp{60}")
|
||
|
||
(rescan-database-on-save?
|
||
maybe-boolean
|
||
"\
|
||
Automatically discover added interfaces from the database and start monitoring.
|
||
The rescan is done every
|
||
@var{save-interval}
|
||
or
|
||
@var{offline-save-interval}
|
||
minutes depending on the current activity state.")
|
||
|
||
(save-interval
|
||
(maybe-integer 5)
|
||
"\
|
||
How often in minutes cached interface data is saved to file.
|
||
Value range: (
|
||
@var{update-interval} / 60 )..@samp{60}")
|
||
|
||
(save-on-status-change?
|
||
(maybe-boolean #t)
|
||
"\
|
||
Enable or disable the additional saving to file of cached interface data
|
||
when the availability of an interface changes, i.e., when an interface goes
|
||
offline or comes online.")
|
||
|
||
(time-sync-wait
|
||
(maybe-integer 5)
|
||
"\
|
||
How many minutes to wait during daemon startup for system clock to sync if
|
||
most recent database update appears to be in the future. This may be needed
|
||
in systems without a real-time clock (RTC) which require some time after boot
|
||
to query and set the correct time. @code{0} = wait disabled.
|
||
Value range: @samp{0}..@samp{60}")
|
||
|
||
(top-day-entries
|
||
(maybe-integer 20)
|
||
"\
|
||
Data retention duration for the top day entries. The configuration
|
||
defines how many of the past top day entries will be stored. Set to @code{-1} for
|
||
unlimited entries or to @code{0} to disable the data collection of this
|
||
resolution.")
|
||
|
||
(trafficless-entries?
|
||
(maybe-boolean #t)
|
||
"\
|
||
Create database entries even when there is no traffic during the entry's time
|
||
period.")
|
||
|
||
(update-file-owner?
|
||
(maybe-boolean #t)
|
||
"\
|
||
Enable or disable the update of file ownership during daemon process startup.
|
||
During daemon startup, only database, log and pid files will be modified if the
|
||
user or group change feature (
|
||
@var{daemon-user}
|
||
or
|
||
@var{daemon-group}
|
||
) is enabled and the files don't match the requested user or group. During manual
|
||
database creation, this option will cause file ownership to be inherited from the
|
||
database directory if the directory already exists. This option only has effect
|
||
when the process is started as root or via sudo.")
|
||
|
||
(update-interval
|
||
(maybe-integer 20)
|
||
"\
|
||
How often in seconds the interface data is updated. Value range:
|
||
@var{poll-interval}..@samp{300}")
|
||
|
||
(use-logging
|
||
(maybe-integer 2)
|
||
"\
|
||
Enable or disable logging. Accepted values are:
|
||
@code{0} = disabled, @code{1} = logfile and @code{2} = syslog.")
|
||
|
||
(use-utc?
|
||
maybe-boolean
|
||
"\
|
||
Enable or disable using UTC as timezone in the database for all entries. When
|
||
enabled, all entries added to the database will use UTC regardless of the
|
||
configured system timezone. When disabled, the configured system timezone
|
||
will be used. Changing this setting will not result in already existing
|
||
data to be modified."
|
||
(serializer
|
||
(lambda (_ value)
|
||
(if (maybe-value-set? value)
|
||
(vnstat-serialize-boolean 'use-UTC value) ""))))
|
||
|
||
(yearly-years
|
||
(maybe-integer -1)
|
||
"\
|
||
Data retention duration for the one year resolution entries. The configuration
|
||
defines for how many past years entries will be stored. Set to @code{-1} for
|
||
unlimited entries or to @code{0} to disable the data collection of this
|
||
resolution.")
|
||
|
||
(prefix vnstat-))
|
||
|
||
(define (vnstat-serialize-configuration config)
|
||
(mixed-text-file
|
||
"vnstat.conf"
|
||
(serialize-configuration config vnstat-configuration-fields)))
|
||
|
||
(define (vnstat-shepherd-service config)
|
||
(let ((config-file (vnstat-serialize-configuration config)))
|
||
(match-record config <vnstat-configuration> (package pid-file)
|
||
(shepherd-service
|
||
(documentation "Run vnstatd.")
|
||
(requirement `(networking file-systems))
|
||
(provision '(vnstatd))
|
||
(start #~(make-forkexec-constructor
|
||
(list #$(file-append package "/sbin/vnstatd")
|
||
"--daemon"
|
||
"--config" #$config-file)
|
||
#:pid-file #$pid-file))
|
||
(stop #~(make-kill-destructor))
|
||
(actions
|
||
(list (shepherd-configuration-action config-file)
|
||
(shepherd-action
|
||
(name 'reload)
|
||
(documentation "Reload vnstatd.")
|
||
(procedure
|
||
#~(lambda (pid)
|
||
(if pid
|
||
(begin
|
||
(kill pid SIGHUP)
|
||
(format #t
|
||
"Issued SIGHUP to vnstatd (PID ~a)."
|
||
pid))
|
||
(format #t "vnstatd is not running.")))))))))))
|
||
|
||
(define (vnstat-account-service config)
|
||
(match-record config <vnstat-configuration> (daemon-group daemon-user)
|
||
(filter-map maybe-value (list daemon-group daemon-user))))
|
||
|
||
(define vnstat-service-type
|
||
(service-type
|
||
(name 'vnstat)
|
||
(description "vnStat network-traffic monitor service.")
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
(compose list vnstat-shepherd-service))
|
||
(service-extension account-service-type
|
||
vnstat-account-service)))
|
||
(default-value (vnstat-configuration))))
|
||
|
||
|
||
;;;
|
||
;;; Zabbix server
|
||
;;;
|
||
|
||
(define (uglify-field-name field-name)
|
||
(apply string-append
|
||
(map (lambda (str)
|
||
(if (member (string->symbol str) '(ca db ssl))
|
||
(string-upcase str)
|
||
(string-capitalize str)))
|
||
(string-split (string-delete #\?
|
||
(symbol->string field-name))
|
||
#\-))))
|
||
|
||
(define (serialize-field field-name val)
|
||
#~(format #f "~a=~a~%" #$(uglify-field-name field-name) #$val))
|
||
|
||
(define (serialize-number field-name val)
|
||
(serialize-field field-name (number->string val)))
|
||
|
||
(define (serialize-list field-name val)
|
||
#~(if (null? '#$val)
|
||
""
|
||
#$(serialize-field field-name (string-join val ","))))
|
||
|
||
|
||
(define (serialize-string field-name val)
|
||
(if (or (eq? 'user field-name)
|
||
(eq? 'group field-name)
|
||
(and (string? val) (string=? val "")))
|
||
""
|
||
(serialize-field field-name val)))
|
||
|
||
(define include-files? list?)
|
||
|
||
(define (serialize-include-files field-name val)
|
||
#~(string-append #$@(map (cut serialize-field 'include <>) val)))
|
||
|
||
(define extra-options? string?)
|
||
|
||
(define (serialize-extra-options field-name val)
|
||
#~(if (= 0 (string-length #$val)) "" #$(format #f "~a~%" val)))
|
||
|
||
(define (nginx-server-configuration-list? val)
|
||
(and (list? val) (and-map nginx-server-configuration? val)))
|
||
|
||
(define (serialize-nginx-server-configuration-list field-name val)
|
||
"")
|
||
|
||
(define-configuration zabbix-server-configuration
|
||
(zabbix-server
|
||
(file-like zabbix-server)
|
||
"The zabbix-server package.")
|
||
(user
|
||
(string "zabbix")
|
||
"User who will run the Zabbix server.")
|
||
(group
|
||
(string "zabbix")
|
||
"Group who will run the Zabbix server.")
|
||
(db-host
|
||
(string "127.0.0.1")
|
||
"Database host name.")
|
||
(db-name
|
||
(string "zabbix")
|
||
"Database name.")
|
||
(db-user
|
||
(string "zabbix")
|
||
"Database user.")
|
||
(db-password
|
||
(string "")
|
||
"Database password. Please, use @code{include-files} with
|
||
@code{DBPassword=SECRET} inside a specified file instead.")
|
||
(db-port
|
||
(number 5432)
|
||
"Database port.")
|
||
(log-type
|
||
(string "")
|
||
"Specifies where log messages are written to:
|
||
@itemize
|
||
@item @code{system} - syslog.
|
||
@item @code{file} - file specified with @code{log-file} parameter.
|
||
@item @code{console} - standard output.
|
||
@end itemize\n")
|
||
(log-file
|
||
(string "/var/log/zabbix/server.log")
|
||
"Log file name for @code{log-type} @code{file} parameter.")
|
||
(pid-file
|
||
(string "/var/run/zabbix/zabbix_server.pid")
|
||
"Name of PID file.")
|
||
(ssl-ca-location
|
||
(string "/etc/ssl/certs/ca-certificates.crt")
|
||
"The location of certificate authority (CA) files for SSL server
|
||
certificate verification.")
|
||
(ssl-cert-location
|
||
(string "/etc/ssl/certs")
|
||
"Location of SSL client certificates.")
|
||
(extra-options
|
||
(extra-options "")
|
||
"Extra options will be appended to Zabbix server configuration file.")
|
||
(include-files
|
||
(include-files '())
|
||
"You may include individual files or all files in a directory in the
|
||
configuration file."))
|
||
|
||
(define (zabbix-server-account config)
|
||
"Return the user accounts and user groups for CONFIG."
|
||
(let ((zabbix-user (zabbix-server-configuration-user config))
|
||
(zabbix-group (zabbix-server-configuration-group config)))
|
||
(list (user-group (name zabbix-group) (system? #t))
|
||
(user-account
|
||
(name zabbix-user)
|
||
(system? #t)
|
||
(group zabbix-group)
|
||
(comment "zabbix privilege separation user")
|
||
(home-directory (string-append "/var/run/" zabbix-user))
|
||
(shell (file-append shadow "/sbin/nologin"))))))
|
||
|
||
(define (zabbix-server-config-file config)
|
||
"Return the zabbix-server configuration file corresponding to CONFIG."
|
||
(computed-file
|
||
"zabbix_server.conf"
|
||
#~(begin
|
||
(call-with-output-file #$output
|
||
(lambda (port)
|
||
(format port "# Generated by 'zabbix-server-service'.~%")
|
||
(format port #$(serialize-configuration
|
||
config zabbix-server-configuration-fields)))))))
|
||
|
||
(define (zabbix-server-activation config)
|
||
"Return the activation gexp for CONFIG."
|
||
(with-imported-modules '((guix build utils))
|
||
#~(begin
|
||
(use-modules (guix build utils)
|
||
(ice-9 rdelim))
|
||
(let ((user (getpw #$(zabbix-server-configuration-user config))))
|
||
(for-each (lambda (file)
|
||
(let ((directory (dirname file)))
|
||
(mkdir-p directory)
|
||
(chown directory (passwd:uid user) (passwd:gid user))
|
||
(chmod directory #o755)))
|
||
(list #$(zabbix-server-configuration-log-file config)
|
||
#$(zabbix-server-configuration-pid-file config)
|
||
"/etc/zabbix/maintenance.inc.php"))))))
|
||
|
||
(define (zabbix-server-runtime-control-procedure zabbix-server config command)
|
||
;; XXX: This is duplicated from mcron; factorize.
|
||
#~(lambda (_ . args)
|
||
;; Run 'zabbix_server' in a pipe so we can explicitly redirect its output
|
||
;; to 'current-output-port', which at this stage is bound to the client
|
||
;; connection.
|
||
(let ((pipe (apply open-pipe* OPEN_READ #$zabbix-server
|
||
"--config" #$config
|
||
"-R" #$command args)))
|
||
(let loop ()
|
||
(match (read-line pipe 'concat)
|
||
((? eof-object?)
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(zero? (close-pipe pipe)))
|
||
(lambda args
|
||
;; There's a race with the SIGCHLD handler, which could
|
||
;; call 'waitpid' before 'close-pipe' above does. If we
|
||
;; get ECHILD, that means we lost the race; in that case, we
|
||
;; cannot tell what the exit code was (FIXME).
|
||
(or (= ECHILD (system-error-errno args))
|
||
(apply throw args)))))
|
||
(line
|
||
(display line)
|
||
(loop)))))))
|
||
|
||
;; Provide shepherd actions for common "zabbix_server -R" commands
|
||
;; mainly for a convenient way to use the correct configuration file.
|
||
(define (zabbix-server-actions zabbix-server config)
|
||
(list (shepherd-action
|
||
(name 'reload-config-cache)
|
||
(documentation "Reload the configuration cache.")
|
||
(procedure (zabbix-server-runtime-control-procedure
|
||
zabbix-server config "config_cache_reload")))
|
||
(shepherd-action
|
||
(name 'reload-snmp-cache)
|
||
(documentation "Reload SNMP cache.")
|
||
(procedure (zabbix-server-runtime-control-procedure
|
||
zabbix-server config "snmp_cache_reload")))))
|
||
|
||
(define (zabbix-server-shepherd-service config)
|
||
"Return a <shepherd-service> for Zabbix server with CONFIG."
|
||
(let ((zabbix-server
|
||
(file-append (zabbix-server-configuration-zabbix-server config)
|
||
"/sbin/zabbix_server"))
|
||
(config-file (zabbix-server-config-file config)))
|
||
(list (shepherd-service
|
||
(provision '(zabbix-server))
|
||
(requirement '(user-processes))
|
||
(documentation "Run the Zabbix server daemon.")
|
||
(actions (zabbix-server-actions zabbix-server config-file))
|
||
(start #~(make-forkexec-constructor
|
||
(list #$zabbix-server
|
||
"--config" #$config-file
|
||
"--foreground")
|
||
#:user #$(zabbix-server-configuration-user config)
|
||
#:group #$(zabbix-server-configuration-group config)
|
||
#:pid-file #$(zabbix-server-configuration-pid-file config)
|
||
#:environment-variables
|
||
(list "SSL_CERT_DIR=/run/current-system/profile\
|
||
/etc/ssl/certs"
|
||
"SSL_CERT_FILE=/run/current-system/profile\
|
||
/etc/ssl/certs/ca-certificates.crt")))
|
||
(stop #~(make-kill-destructor
|
||
;; The server needs to finish database work on shutdown
|
||
;; which can take a while for big or busy databases.
|
||
#:grace-period 60))))))
|
||
|
||
(define zabbix-server-service-type
|
||
(service-type
|
||
(name 'zabbix-server)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
zabbix-server-shepherd-service)
|
||
(service-extension account-service-type
|
||
zabbix-server-account)
|
||
(service-extension activation-service-type
|
||
zabbix-server-activation)))
|
||
(default-value (zabbix-server-configuration))
|
||
(description "Run the Zabbix server, a high-performance monitoring system
|
||
that can collect data about machines from a variety of sources and provide the
|
||
results in a Web interface.")))
|
||
|
||
(define (generate-zabbix-server-documentation)
|
||
(generate-documentation
|
||
`((zabbix-server-configuration
|
||
,zabbix-server-configuration-fields))
|
||
'zabbix-server-configuration))
|
||
|
||
(define-configuration zabbix-agent-configuration
|
||
(zabbix-agent
|
||
(file-like zabbix-agentd)
|
||
"The zabbix-agent package.")
|
||
(user
|
||
(string "zabbix")
|
||
"User who will run the Zabbix agent.")
|
||
(group
|
||
(string "zabbix")
|
||
"Group who will run the Zabbix agent.")
|
||
(hostname
|
||
(string "")
|
||
"Unique, case sensitive hostname which is required for active checks and
|
||
must match hostname as configured on the server.")
|
||
(log-type
|
||
(string "")
|
||
"Specifies where log messages are written to:
|
||
@itemize
|
||
@item @code{system} - syslog.
|
||
@item @code{file} - file specified with @code{log-file} parameter.
|
||
@item @code{console} - standard output.
|
||
@end itemize\n")
|
||
(log-file
|
||
(string "/var/log/zabbix/agent.log")
|
||
"Log file name for @code{log-type} @code{file} parameter.")
|
||
(pid-file
|
||
(string "/var/run/zabbix/zabbix_agent.pid")
|
||
"Name of PID file.")
|
||
(server
|
||
(list '("127.0.0.1"))
|
||
"List of IP addresses, optionally in CIDR notation, or hostnames of Zabbix
|
||
servers and Zabbix proxies. Incoming connections will be accepted only from
|
||
the hosts listed here.")
|
||
(server-active
|
||
(list '("127.0.0.1"))
|
||
"List of IP:port (or hostname:port) pairs of Zabbix servers and Zabbix
|
||
proxies for active checks. If port is not specified, default port is used.
|
||
If this parameter is not specified, active checks are disabled.")
|
||
(extra-options
|
||
(extra-options "")
|
||
"Extra options will be appended to Zabbix server configuration file.")
|
||
(include-files
|
||
(include-files '())
|
||
"You may include individual files or all files in a directory in the
|
||
configuration file."))
|
||
|
||
(define (zabbix-agent-account config)
|
||
"Return the user accounts and user groups for CONFIG."
|
||
(let ((zabbix-user (zabbix-agent-configuration-user config))
|
||
(zabbix-group (zabbix-agent-configuration-group config)))
|
||
(list (user-group (name zabbix-group) (system? #t))
|
||
(user-account
|
||
(name zabbix-user)
|
||
(system? #t)
|
||
(group zabbix-group)
|
||
(comment "zabbix privilege separation user")
|
||
(home-directory (string-append "/var/run/" zabbix-user))
|
||
(shell (file-append shadow "/sbin/nologin"))))))
|
||
|
||
(define (zabbix-agent-activation config)
|
||
"Return the activation gexp for CONFIG."
|
||
(with-imported-modules '((guix build utils))
|
||
#~(begin
|
||
(use-modules (guix build utils)
|
||
(ice-9 rdelim))
|
||
(let ((user
|
||
(getpw #$(zabbix-agent-configuration-user config))))
|
||
(for-each (lambda (file)
|
||
(let ((directory (dirname file)))
|
||
(mkdir-p directory)
|
||
(chown directory (passwd:uid user) (passwd:gid user))
|
||
(chmod directory #o755)))
|
||
(list #$(zabbix-agent-configuration-log-file config)
|
||
#$(zabbix-agent-configuration-pid-file config)))))))
|
||
|
||
(define (zabbix-agent-config-file config)
|
||
"Return the zabbix-agent configuration file corresponding to CONFIG."
|
||
(computed-file
|
||
"zabbix_agent.conf"
|
||
#~(begin
|
||
(call-with-output-file #$output
|
||
(lambda (port)
|
||
(format port "# Generated by 'zabbix-agent-service'.~%")
|
||
(format port #$(serialize-configuration
|
||
config zabbix-agent-configuration-fields)))))))
|
||
|
||
(define (zabbix-agent-arguments config)
|
||
#~(let* ((config-file #$(zabbix-agent-config-file config))
|
||
(agent #$(zabbix-agent-configuration-zabbix-agent config))
|
||
(agent2? (file-exists? (string-append agent "/sbin/zabbix_agent2"))))
|
||
(if agent2?
|
||
(list (string-append agent "/sbin/zabbix_agent2")
|
||
"-config" config-file
|
||
"-foreground")
|
||
(list (string-append agent "/sbin/zabbix_agentd")
|
||
"--config" config-file
|
||
"--foreground"))))
|
||
|
||
(define (zabbix-agent-shepherd-service config)
|
||
"Return a <shepherd-service> for Zabbix agent with CONFIG."
|
||
(list (shepherd-service
|
||
(provision '(zabbix-agent))
|
||
(requirement '(user-processes))
|
||
(documentation "Run Zabbix agent daemon.")
|
||
(start #~(make-forkexec-constructor
|
||
#$(zabbix-agent-arguments config)
|
||
#:user #$(zabbix-agent-configuration-user config)
|
||
#:group #$(zabbix-agent-configuration-group config)
|
||
#:pid-file #$(zabbix-agent-configuration-pid-file config)
|
||
#:environment-variables
|
||
(list "SSL_CERT_DIR=/run/current-system/profile\
|
||
/etc/ssl/certs"
|
||
"SSL_CERT_FILE=/run/current-system/profile\
|
||
/etc/ssl/certs/ca-certificates.crt"
|
||
"PATH=/run/setuid-programs:\
|
||
/run/current-system/profile/bin:/run/current-system/profile/sbin")))
|
||
(stop #~(make-kill-destructor)))))
|
||
|
||
(define zabbix-agent-service-type
|
||
(service-type
|
||
(name 'zabbix-agent)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
zabbix-agent-shepherd-service)
|
||
(service-extension account-service-type
|
||
zabbix-agent-account)
|
||
(service-extension activation-service-type
|
||
zabbix-agent-activation)))
|
||
(default-value (zabbix-agent-configuration))
|
||
(description "Run the Zabbix agent, @command{zabbix_agentd}, which gathers
|
||
information about the running system for the Zabbix monitoring server.")))
|
||
|
||
(define (generate-zabbix-agent-documentation)
|
||
(generate-documentation
|
||
`((zabbix-agent-configuration
|
||
,zabbix-agent-configuration-fields))
|
||
'zabbix-agent-configuration))
|
||
|
||
(define %zabbix-front-end-configuration-nginx
|
||
(nginx-server-configuration
|
||
(root #~(string-append #$zabbix-server:front-end "/share/zabbix/php"))
|
||
(index '("index.php"))
|
||
(locations
|
||
(let ((php-location (nginx-php-location)))
|
||
(list (nginx-location-configuration
|
||
(inherit php-location)
|
||
(body (append (nginx-location-configuration-body php-location)
|
||
(list "
|
||
fastcgi_param PHP_VALUE \"post_max_size = 16M
|
||
max_execution_time = 300\";
|
||
")))))))
|
||
(listen '("80"))))
|
||
|
||
(define (zabbix-front-end-nginx-extension config)
|
||
(match config
|
||
(($ <zabbix-front-end-configuration> server nginx)
|
||
(if (null? nginx)
|
||
(list
|
||
(nginx-server-configuration
|
||
(inherit %zabbix-front-end-configuration-nginx)
|
||
(root #~(string-append #$server:front-end "/share/zabbix/php"))))
|
||
nginx))))
|
||
|
||
(define-configuration zabbix-front-end-configuration
|
||
(zabbix-server
|
||
(file-like zabbix-server)
|
||
"The Zabbix server package to use.")
|
||
(nginx
|
||
(list '())
|
||
"List of @ref{nginx-server-configuration,@code{nginx-server-configuration}}
|
||
blocks for the Zabbix front-end. When empty, a default that listens on port 80
|
||
is used.")
|
||
(db-host
|
||
(string "localhost")
|
||
"Database host name.")
|
||
(db-port
|
||
(number 5432)
|
||
"Database port.")
|
||
(db-name
|
||
(string "zabbix")
|
||
"Database name.")
|
||
(db-user
|
||
(string "zabbix")
|
||
"Database user.")
|
||
(db-password
|
||
(string "")
|
||
"Database password. Please, use @code{db-secret-file} instead.")
|
||
(db-secret-file
|
||
(string "")
|
||
"Secret file which will be appended to @file{zabbix.conf.php} file. This
|
||
file contains credentials for use by Zabbix front-end. You are expected to
|
||
create it manually.")
|
||
(zabbix-host
|
||
(string "localhost")
|
||
"Zabbix server hostname.")
|
||
(zabbix-port
|
||
(number 10051)
|
||
"Zabbix server port."))
|
||
|
||
(define (zabbix-front-end-config config)
|
||
(match-record config <zabbix-front-end-configuration>
|
||
(db-host db-port db-name db-user db-password db-secret-file
|
||
zabbix-host zabbix-port %location)
|
||
(mixed-text-file "zabbix.conf.php"
|
||
"\
|
||
<?php
|
||
// Zabbix GUI configuration file.
|
||
global $DB;
|
||
|
||
$DB['TYPE'] = 'POSTGRESQL';
|
||
$DB['SERVER'] = '" db-host "';
|
||
$DB['PORT'] = '" (number->string db-port) "';
|
||
$DB['DATABASE'] = '" db-name "';
|
||
$DB['USER'] = '" db-user "';
|
||
$DB['PASSWORD'] = " (let ((file (location-file %location))
|
||
(line (location-line %location))
|
||
(column (location-column %location)))
|
||
(if (string-null? db-password)
|
||
(if (string-null? db-secret-file)
|
||
(raise (make-compound-condition
|
||
(condition
|
||
(&message
|
||
(message
|
||
(format #f "no '~A' or '~A' field in your '~A' record"
|
||
'db-secret-file 'db-password
|
||
'zabbix-front-end-configuration))))
|
||
(condition
|
||
(&error-location
|
||
(location %location)))))
|
||
(string-append "trim(file_get_contents('"
|
||
db-secret-file "'));\n"))
|
||
(begin
|
||
(display-hint (G_ "~a:~a:~a: ~a:
|
||
Consider using @code{db-secret-file} instead of @code{db-password} for better
|
||
security.")
|
||
file line column
|
||
'zabbix-front-end-configuration)
|
||
(format #f "'~a';~%" db-password))))
|
||
"
|
||
// Schema name. Used for IBM DB2 and PostgreSQL.
|
||
$DB['SCHEMA'] = '';
|
||
|
||
// Use IEEE754 compatible value range for 64-bit Numeric (float) history values.
|
||
$DB['DOUBLE_IEEE754'] = true;
|
||
|
||
$ZBX_SERVER = '" zabbix-host "';
|
||
$ZBX_SERVER_PORT = '" (number->string zabbix-port) "';
|
||
$ZBX_SERVER_NAME = '';
|
||
|
||
$IMAGE_FORMAT_DEFAULT = IMAGE_FORMAT_PNG;
|
||
")))
|
||
|
||
(define %maintenance.inc.php
|
||
;; Empty php file to allow us move zabbix-frontend configs to ‘/etc/zabbix’
|
||
;; directory. See ‘install-front-end’ phase in
|
||
;; (@ (gnu packages monitoring) zabbix-server) package.
|
||
"\
|
||
<?php
|
||
")
|
||
|
||
(define (zabbix-front-end-activation config)
|
||
"Return the activation gexp for CONFIG."
|
||
#~(begin
|
||
(use-modules (guix build utils))
|
||
(mkdir-p "/etc/zabbix")
|
||
(call-with-output-file "/etc/zabbix/maintenance.inc.php"
|
||
(lambda (port)
|
||
(display #$%maintenance.inc.php port)))
|
||
(copy-file #$(zabbix-front-end-config config)
|
||
"/etc/zabbix/zabbix.conf.php")))
|
||
|
||
(define zabbix-front-end-service-type
|
||
(service-type
|
||
(name 'zabbix-front-end)
|
||
(extensions
|
||
(list (service-extension activation-service-type
|
||
zabbix-front-end-activation)
|
||
(service-extension nginx-service-type
|
||
zabbix-front-end-nginx-extension)
|
||
;; Make sure php-fpm is instantiated.
|
||
(service-extension php-fpm-service-type
|
||
(const #t))))
|
||
(default-value (zabbix-front-end-configuration))
|
||
(description
|
||
"Run the zabbix-front-end web interface, which allows users to interact
|
||
with Zabbix server.")))
|
||
|
||
(define (generate-zabbix-front-end-documentation)
|
||
(generate-documentation
|
||
`((zabbix-front-end-configuration
|
||
,zabbix-front-end-configuration-fields))
|
||
'zabbix-front-end-configuration))
|