13f0414ece
* gnu/packages/monitoring.scm (zabbix-agentd): Update to 4.4.1. * gnu/services/monitoring.scm (%zabbix-front-end-configuration-nginx): Add listen record field.
603 lines
22 KiB
Scheme
603 lines
22 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 Oleg Pykhalov <go.wigust@gmail.com>
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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 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-26)
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#:use-module (srfi srfi-35)
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#:export (darkstat-configuration
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prometheus-node-exporter-configuration
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darkstat-service-type
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prometheus-node-exporter-service-type
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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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(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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(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)
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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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(stop #~(make-kill-destructor))))))
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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 (service-extension
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shepherd-root-service-type
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(compose list prometheus-node-exporter-shepherd-service))))
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(default-value (prometheus-node-exporter-configuration))))
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;;;
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;;; Zabbix server
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;;;
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(define (uglify-field-name field-name)
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(apply string-append
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(map (lambda (str)
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(if (member (string->symbol str) '(ca db ssl))
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(string-upcase str)
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(string-capitalize str)))
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(string-split (string-delete #\?
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(symbol->string field-name))
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#\-))))
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(define (serialize-field field-name val)
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(format #t "~a=~a~%" (uglify-field-name field-name) val))
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(define (serialize-number field-name val)
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(serialize-field field-name (number->string val)))
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(define (serialize-list field-name val)
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(if (null? val) "" (serialize-field field-name (string-join val ","))))
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(define (serialize-string field-name val)
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(if (and (string? val) (string=? val ""))
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""
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(serialize-field field-name val)))
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(define group? string?)
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(define serialize-group
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(const ""))
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(define include-files? list?)
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(define (serialize-include-files field-name val)
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(if (null? val) "" (for-each (cut serialize-field 'include <>) val)))
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(define extra-options? string?)
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(define (serialize-extra-options field-name val)
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(if (null? val) "" (display val)))
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(define (nginx-server-configuration-list? val)
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(and (list? val) (and-map nginx-server-configuration? val)))
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(define (serialize-nginx-server-configuration-list field-name val)
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"")
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(define-configuration zabbix-server-configuration
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(zabbix-server
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(package zabbix-server)
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"The zabbix-server package.")
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(user
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(string "zabbix")
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"User who will run the Zabbix server.")
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(group ;for zabbix-server-account procedure
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(group "zabbix")
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"Group who will run the Zabbix server.")
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(db-host
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(string "127.0.0.1")
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"Database host name.")
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(db-name
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(string "zabbix")
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"Database name.")
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(db-user
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(string "zabbix")
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"Database user.")
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(db-password
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(string "")
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"Database password. Please, use @code{include-files} with
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@code{DBPassword=SECRET} inside a specified file instead.")
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(db-port
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(number 5432)
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"Database port.")
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(log-type
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(string "")
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"Specifies where log messages are written to:
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@itemize
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@item @code{system} - syslog.
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@item @code{file} - file specified with @code{log-file} parameter.
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@item @code{console} - standard output.
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@end itemize\n")
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(log-file
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(string "/var/log/zabbix/server.log")
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"Log file name for @code{log-type} @code{file} parameter.")
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(pid-file
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(string "/var/run/zabbix/zabbix_server.pid")
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"Name of PID file.")
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(ssl-ca-location
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(string "/etc/ssl/certs/ca-certificates.crt")
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"The location of certificate authority (CA) files for SSL server
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certificate verification.")
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(ssl-cert-location
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(string "/etc/ssl/certs")
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"Location of SSL client certificates.")
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(extra-options
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(extra-options "")
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"Extra options will be appended to Zabbix server configuration file.")
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(include-files
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(include-files '())
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"You may include individual files or all files in a directory in the
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configuration file."))
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(define (zabbix-server-account config)
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"Return the user accounts and user groups for CONFIG."
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(let ((zabbix-user (zabbix-server-configuration-user config))
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(zabbix-group (zabbix-server-configuration-group config)))
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(list (user-group (name zabbix-group) (system? #t))
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(user-account
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(name zabbix-user)
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(system? #t)
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(group zabbix-group)
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(comment "zabbix privilege separation user")
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(home-directory (string-append "/var/run/" zabbix-user))
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(shell (file-append shadow "/sbin/nologin"))))))
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(define (zabbix-server-config-file config)
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"Return the zabbix-server configuration file corresponding to CONFIG."
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(computed-file
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"zabbix_server.conf"
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#~(begin
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(call-with-output-file #$output
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(lambda (port)
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(display "# Generated by 'zabbix-server-service'.\n" port)
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(display #$(with-output-to-string
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(lambda ()
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(serialize-configuration
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config zabbix-server-configuration-fields)))
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port)
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#t)))))
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(define (zabbix-server-activation config)
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"Return the activation gexp for CONFIG."
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(with-imported-modules '((guix build utils)
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(ice-9 rdelim))
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#~(begin
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(use-modules (guix build utils)
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(ice-9 rdelim))
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(let ((user (getpw #$(zabbix-server-configuration-user config))))
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(for-each (lambda (file)
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(let ((directory (dirname file)))
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(mkdir-p directory)
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(chown directory (passwd:uid user) (passwd:gid user))
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(chmod directory #o755)))
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(list #$(zabbix-server-configuration-log-file config)
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#$(zabbix-server-configuration-pid-file config)
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"/etc/zabbix/maintenance.inc.php"))))))
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(define (zabbix-server-shepherd-service config)
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"Return a <shepherd-service> for Zabbix server with CONFIG."
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(list (shepherd-service
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(provision '(zabbix-server))
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(documentation "Run Zabbix server daemon.")
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(start #~(make-forkexec-constructor
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(list #$(file-append (zabbix-server-configuration-zabbix-server config)
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"/sbin/zabbix_server")
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"--config" #$(zabbix-server-config-file config)
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"--foreground")
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#:user #$(zabbix-server-configuration-user config)
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#:group #$(zabbix-server-configuration-group config)
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#:pid-file #$(zabbix-server-configuration-pid-file config)
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#:environment-variables
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(list "SSL_CERT_DIR=/run/current-system/profile\
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/etc/ssl/certs"
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"SSL_CERT_FILE=/run/current-system/profile\
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/etc/ssl/certs/ca-certificates.crt")))
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(stop #~(make-kill-destructor)))))
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(define zabbix-server-service-type
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(service-type
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(name 'zabbix-server)
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(extensions
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(list (service-extension shepherd-root-service-type
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zabbix-server-shepherd-service)
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(service-extension account-service-type
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zabbix-server-account)
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(service-extension activation-service-type
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zabbix-server-activation)))
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(default-value (zabbix-server-configuration))))
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(define (generate-zabbix-server-documentation)
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(generate-documentation
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`((zabbix-server-configuration
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,zabbix-server-configuration-fields))
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'zabbix-server-configuration))
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(define-configuration zabbix-agent-configuration
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(zabbix-agent
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(package zabbix-agentd)
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"The zabbix-agent package.")
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(user
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(string "zabbix")
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"User who will run the Zabbix agent.")
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(group
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(group "zabbix")
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"Group who will run the Zabbix agent.")
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(hostname
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(string "Zabbix server")
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"Unique, case sensitive hostname which is required for active checks and
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must match hostname as configured on the server.")
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(log-type
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(string "")
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"Specifies where log messages are written to:
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@itemize
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@item @code{system} - syslog.
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@item @code{file} - file specified with @code{log-file} parameter.
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@item @code{console} - standard output.
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@end itemize\n")
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(log-file
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(string "/var/log/zabbix/agent.log")
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"Log file name for @code{log-type} @code{file} parameter.")
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(pid-file
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(string "/var/run/zabbix/zabbix_agent.pid")
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"Name of PID file.")
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(server
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(list '("127.0.0.1"))
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"List of IP addresses, optionally in CIDR notation, or hostnames of Zabbix
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servers and Zabbix proxies. Incoming connections will be accepted only from
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the hosts listed here.")
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(server-active
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(list '("127.0.0.1"))
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"List of IP:port (or hostname:port) pairs of Zabbix servers and Zabbix
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proxies for active checks. If port is not specified, default port is used.
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If this parameter is not specified, active checks are disabled.")
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(extra-options
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(extra-options "")
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"Extra options will be appended to Zabbix server configuration file.")
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(include-files
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(include-files '())
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"You may include individual files or all files in a directory in the
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configuration file."))
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(define (zabbix-agent-account config)
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"Return the user accounts and user groups for CONFIG."
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(let ((zabbix-user "zabbix")
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(zabbix-group "zabbix"))
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(list (user-group (name zabbix-group) (system? #t))
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(user-account
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(name zabbix-user)
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(system? #t)
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(group zabbix-group)
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(comment "zabbix privilege separation user")
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(home-directory (string-append "/var/run/" zabbix-user))
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(shell (file-append shadow "/sbin/nologin"))))))
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(define (zabbix-agent-activation config)
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"Return the activation gexp for CONFIG."
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(with-imported-modules '((guix build utils)
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(ice-9 rdelim))
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#~(begin
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(use-modules (guix build utils)
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(ice-9 rdelim))
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(let ((user
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(getpw #$(zabbix-agent-configuration-user config))))
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(for-each (lambda (file)
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(let ((directory (dirname file)))
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(mkdir-p directory)
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(chown directory (passwd:uid user) (passwd:gid user))
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(chmod directory #o755)))
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(list #$(zabbix-agent-configuration-log-file config)
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#$(zabbix-agent-configuration-pid-file config)))))))
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(define (zabbix-agent-config-file config)
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"Return the zabbix-agent configuration file corresponding to CONFIG."
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(computed-file
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"zabbix_agent.conf"
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#~(begin
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(call-with-output-file #$output
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(lambda (port)
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(display "# Generated by 'zabbix-agent-service'.\n" port)
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(display #$(with-output-to-string
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(lambda ()
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(serialize-configuration
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config zabbix-agent-configuration-fields)))
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port)
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#t)))))
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(define (zabbix-agent-shepherd-service config)
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"Return a <shepherd-service> for Zabbix agent with CONFIG."
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(list (shepherd-service
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(provision '(zabbix-agent))
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(documentation "Run Zabbix agent daemon.")
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(start #~(make-forkexec-constructor
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(list #$(file-append (zabbix-agent-configuration-zabbix-agent config)
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"/sbin/zabbix_agentd")
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"--config" #$(zabbix-agent-config-file config)
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"--foreground")
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#:user #$(zabbix-agent-configuration-user config)
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#:group #$(zabbix-agent-configuration-group config)
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#:pid-file #$(zabbix-agent-configuration-pid-file config)
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#:environment-variables
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(list "SSL_CERT_DIR=/run/current-system/profile\
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/etc/ssl/certs"
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"SSL_CERT_FILE=/run/current-system/profile\
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/etc/ssl/certs/ca-certificates.crt")))
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(stop #~(make-kill-destructor)))))
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(define zabbix-agent-service-type
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(service-type
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(name 'zabbix-agent)
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(extensions
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(list (service-extension shepherd-root-service-type
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zabbix-agent-shepherd-service)
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(service-extension account-service-type
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zabbix-agent-account)
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(service-extension activation-service-type
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zabbix-agent-activation)))
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(default-value (zabbix-agent-configuration))))
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(define (generate-zabbix-agent-documentation)
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(generate-documentation
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`((zabbix-agent-configuration
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,zabbix-agent-configuration-fields))
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'zabbix-agent-configuration))
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(define %zabbix-front-end-configuration-nginx
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(nginx-server-configuration
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(root #~(string-append #$zabbix-server:front-end "/share/zabbix/php"))
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(index '("index.php"))
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(locations
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(let ((php-location (nginx-php-location)))
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(list (nginx-location-configuration
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(inherit php-location)
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(body (append (nginx-location-configuration-body php-location)
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(list "
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fastcgi_param PHP_VALUE \"post_max_size = 16M
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max_execution_time = 300\";
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")))))))
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(listen '("80"))))
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(define-configuration zabbix-front-end-configuration
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;; TODO: Specify zabbix front-end package.
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||
;; (zabbix-
|
||
;; (package zabbix-front-end)
|
||
;; "The zabbix-front-end package.")
|
||
(nginx
|
||
(nginx-server-configuration-list
|
||
(list %zabbix-front-end-configuration-nginx))
|
||
"NGINX configuration.")
|
||
(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>
|
||
(%location db-host db-port db-name db-user db-password db-secret-file
|
||
zabbix-host zabbix-port)
|
||
(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-trim-both
|
||
(with-input-from-file db-secret-file
|
||
read-string)))
|
||
(begin
|
||
(display-hint (format #f (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))
|
||
db-password))) "';
|
||
|
||
// Schema name. Used for IBM DB2 and PostgreSQL.
|
||
$DB['SCHEMA'] = '';
|
||
|
||
$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-configuration-nginx)
|
||
;; 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))
|