602 lines
22 KiB
Scheme
602 lines
22 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2018 Sou Bunnbu <iyzsong@member.fsf.org>
|
||
;;; Copyright © 2018, 2019 Gábor Boskovits <boskovits@gmail.com>
|
||
;;; Copyright © 2018, 2019 Oleg Pykhalov <go.wigust@gmail.com>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu services monitoring)
|
||
#:use-module (gnu services)
|
||
#:use-module (gnu services configuration)
|
||
#:use-module (gnu services shepherd)
|
||
#:use-module (gnu services web)
|
||
#:use-module (gnu packages admin)
|
||
#:use-module (gnu packages monitoring)
|
||
#:use-module (gnu system shadow)
|
||
#:use-module (guix gexp)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix records)
|
||
#:use-module (guix utils)
|
||
#:use-module ((guix ui) #:select (display-hint G_))
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 rdelim)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (srfi srfi-35)
|
||
#:export (darkstat-configuration
|
||
prometheus-node-exporter-configuration
|
||
darkstat-service-type
|
||
prometheus-node-exporter-service-type
|
||
|
||
zabbix-server-configuration
|
||
zabbix-server-service-type
|
||
zabbix-agent-configuration
|
||
zabbix-agent-service-type
|
||
zabbix-front-end-configuration
|
||
zabbix-front-end-service-type
|
||
%zabbix-front-end-configuration-nginx))
|
||
|
||
|
||
;;;
|
||
;;; darkstat
|
||
;;;
|
||
|
||
(define-record-type* <darkstat-configuration>
|
||
darkstat-configuration make-darkstat-configuration darkstat-configuration?
|
||
(package darkstat-configuration-package
|
||
(default darkstat))
|
||
(interface darkstat-configuration-interface)
|
||
(port darkstat-configuration-port
|
||
(default "667"))
|
||
(bind-address darkstat-configuration-bind-address
|
||
(default "127.0.0.1"))
|
||
(base darkstat-configuration-base
|
||
(default "/")))
|
||
|
||
(define %darkstat-accounts
|
||
(list (user-account
|
||
(name "darkstat")
|
||
(group "darkstat")
|
||
(system? #t)
|
||
(comment "darkstat daemon user")
|
||
(home-directory "/var/lib/darkstat")
|
||
(shell (file-append shadow "/sbin/nologin")))
|
||
(user-group
|
||
(name "darkstat")
|
||
(system? #t))))
|
||
|
||
(define darkstat-shepherd-service
|
||
(match-lambda
|
||
(($ <darkstat-configuration>
|
||
package interface port bind-address base)
|
||
(shepherd-service
|
||
(documentation "Network statistics gatherer.")
|
||
(provision '(darkstat))
|
||
(requirement '(networking))
|
||
(start #~(make-forkexec-constructor
|
||
(list #$(file-append package "/sbin/darkstat")
|
||
"-i" #$interface
|
||
"-p" #$port
|
||
"-b" #$bind-address
|
||
"--base" #$base
|
||
"--syslog" "--no-daemon"
|
||
"--chroot" "/var/lib/darkstat"
|
||
"--user" "darkstat"
|
||
"--import" "darkstat.db"
|
||
"--export" "darkstat.db")))
|
||
(stop #~(make-kill-destructor))))))
|
||
|
||
(define darkstat-service-type
|
||
(service-type
|
||
(name 'darkstat)
|
||
(description
|
||
"Run @command{darkstat} to serve network traffic statistics reports over
|
||
HTTP.")
|
||
(extensions
|
||
(list (service-extension account-service-type
|
||
(const %darkstat-accounts))
|
||
(service-extension shepherd-root-service-type
|
||
(compose list darkstat-shepherd-service))))))
|
||
|
||
(define-record-type* <prometheus-node-exporter-configuration>
|
||
prometheus-node-exporter-configuration
|
||
make-prometheus-node-exporter-configuration
|
||
prometheus-node-exporter-configuration?
|
||
(package prometheus-node-exporter-configuration-package
|
||
(default go-github-com-prometheus-node-exporter))
|
||
(web-listen-address prometheus-node-exporter-web-listen-address
|
||
(default ":9100")))
|
||
|
||
(define prometheus-node-exporter-shepherd-service
|
||
(match-lambda
|
||
(( $ <prometheus-node-exporter-configuration>
|
||
package web-listen-address)
|
||
(shepherd-service
|
||
(documentation "Prometheus node exporter.")
|
||
(provision '(prometheus-node-exporter))
|
||
(requirement '(networking))
|
||
(start #~(make-forkexec-constructor
|
||
(list #$(file-append package "/bin/node_exporter")
|
||
"--web.listen-address" #$web-listen-address)))
|
||
(stop #~(make-kill-destructor))))))
|
||
|
||
(define prometheus-node-exporter-service-type
|
||
(service-type
|
||
(name 'prometheus-node-exporter)
|
||
(description
|
||
"Run @command{node_exporter} to serve hardware and OS metrics to
|
||
prometheus.")
|
||
(extensions
|
||
(list (service-extension
|
||
shepherd-root-service-type
|
||
(compose list prometheus-node-exporter-shepherd-service))))
|
||
(default-value (prometheus-node-exporter-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 #t "~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 (and (string? val) (string=? val ""))
|
||
""
|
||
(serialize-field field-name val)))
|
||
|
||
(define group? string?)
|
||
|
||
(define serialize-group
|
||
(const ""))
|
||
|
||
(define include-files? list?)
|
||
|
||
(define (serialize-include-files field-name val)
|
||
(if (null? val) "" (for-each (cut serialize-field 'include <>) val)))
|
||
|
||
(define extra-options? string?)
|
||
|
||
(define (serialize-extra-options field-name val)
|
||
(if (null? val) "" (display 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
|
||
(package zabbix-server)
|
||
"The zabbix-server package.")
|
||
(user
|
||
(string "zabbix")
|
||
"User who will run the Zabbix server.")
|
||
(group ;for zabbix-server-account procedure
|
||
(group "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 #$output
|
||
(lambda (port)
|
||
(display "# Generated by 'zabbix-server-service'.\n" port)
|
||
(display #$(with-output-to-string
|
||
(lambda ()
|
||
(serialize-configuration
|
||
config zabbix-server-configuration-fields)))
|
||
port)
|
||
#t)))))
|
||
|
||
(define (zabbix-server-activation config)
|
||
"Return the activation gexp for CONFIG."
|
||
(with-imported-modules '((guix build utils)
|
||
(ice-9 rdelim))
|
||
#~(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)
|
||
#$(zabbix-server-configuration-pid-file config)
|
||
"/etc/zabbix/maintenance.inc.php"))))))
|
||
|
||
(define (zabbix-server-shepherd-service config)
|
||
"Return a <shepherd-service> for Zabbix server with CONFIG."
|
||
(list (shepherd-service
|
||
(provision '(zabbix-server))
|
||
(documentation "Run Zabbix server daemon.")
|
||
(start #~(make-forkexec-constructor
|
||
(list #$(file-append (zabbix-server-configuration-zabbix-server config)
|
||
"/sbin/zabbix_server")
|
||
"--config" #$(zabbix-server-config-file config)
|
||
"--foreground")
|
||
#:user #$(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)))))
|
||
|
||
(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))))
|
||
|
||
(define (generate-zabbix-server-documentation)
|
||
(generate-documentation
|
||
`((zabbix-server-configuration
|
||
,zabbix-server-configuration-fields))
|
||
'zabbix-server-configuration))
|
||
|
||
(define-configuration zabbix-agent-configuration
|
||
(zabbix-agent
|
||
(package zabbix-agentd)
|
||
"The zabbix-agent package.")
|
||
(user
|
||
(string "zabbix")
|
||
"User who will run the Zabbix agent.")
|
||
(group
|
||
(group "zabbix")
|
||
"Group who will run the Zabbix agent.")
|
||
(hostname
|
||
(string "Zabbix server")
|
||
"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")
|
||
(zabbix-group "zabbix"))
|
||
(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)
|
||
(ice-9 rdelim))
|
||
#~(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)
|
||
(display "# Generated by 'zabbix-agent-service'.\n" port)
|
||
(display #$(with-output-to-string
|
||
(lambda ()
|
||
(serialize-configuration
|
||
config zabbix-agent-configuration-fields)))
|
||
port)
|
||
#t)))))
|
||
|
||
(define (zabbix-agent-shepherd-service config)
|
||
"Return a <shepherd-service> for Zabbix agent with CONFIG."
|
||
(list (shepherd-service
|
||
(provision '(zabbix-agent))
|
||
(documentation "Run Zabbix agent daemon.")
|
||
(start #~(make-forkexec-constructor
|
||
(list #$(file-append (zabbix-agent-configuration-zabbix-agent config)
|
||
"/sbin/zabbix_agentd")
|
||
"--config" #$(zabbix-agent-config-file config)
|
||
"--foreground")
|
||
#:user #$(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")))
|
||
(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))))
|
||
|
||
(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\";
|
||
")))))))))
|
||
|
||
(define-configuration zabbix-front-end-configuration
|
||
;; TODO: Specify zabbix front-end package.
|
||
;; (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))
|