ef2dda8edb
* gnu/services/databases.scm (postgresql-shepherd-service): Change 'start' to return the PID.
617 lines
23 KiB
Scheme
617 lines
23 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2015 David Thompson <davet@gnu.org>
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;;; Copyright © 2015, 2016 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
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;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
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;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
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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 databases)
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#:use-module (gnu services)
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#:use-module (gnu services shepherd)
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#:use-module (gnu system shadow)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages databases)
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#:use-module (guix modules)
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#:use-module (guix records)
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#:use-module (guix gexp)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:export (<postgresql-config-file>
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postgresql-config-file
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postgresql-config-file?
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postgresql-config-file-log-destination
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postgresql-config-file-hba-file
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postgresql-config-file-ident-file
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postgresql-config-file-extra-config
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<postgresql-configuration>
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postgresql-configuration
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postgresql-configuration?
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postgresql-configuration-postgresql
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postgresql-configuration-port
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postgresql-configuration-locale
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postgresql-configuration-file
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postgresql-configuration-data-directory
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postgresql-service
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postgresql-service-type
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memcached-service-type
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<memcached-configuration>
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memcached-configuration
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memcached-configuration?
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memcached-configuration-memecached
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memcached-configuration-interfaces
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memcached-configuration-tcp-port
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memcached-configuration-udp-port
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memcached-configuration-additional-options
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<mongodb-configuration>
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mongodb-configuration
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mongodb-configuration?
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mongodb-configuration-mongodb
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mongodb-configuration-config-file
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mongodb-configuration-data-directory
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mongodb-service-type
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mysql-service
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mysql-service-type
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mysql-configuration
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mysql-configuration?
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redis-configuration
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redis-configuration?
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redis-service-type))
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;;; Commentary:
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;;;
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;;; Database services.
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;;;
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;;; Code:
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(define %default-postgres-hba
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(plain-file "pg_hba.conf"
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"
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local all all trust
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host all all 127.0.0.1/32 trust
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host all all ::1/128 trust"))
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(define %default-postgres-ident
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(plain-file "pg_ident.conf"
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"# MAPNAME SYSTEM-USERNAME PG-USERNAME"))
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(define-record-type* <postgresql-config-file>
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postgresql-config-file make-postgresql-config-file
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postgresql-config-file?
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(log-destination postgresql-config-file-log-destination
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(default "syslog"))
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(hba-file postgresql-config-file-hba-file
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(default %default-postgres-hba))
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(ident-file postgresql-config-file-ident-file
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(default %default-postgres-ident))
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(extra-config postgresql-config-file-extra-config
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(default '())))
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(define-gexp-compiler (postgresql-config-file-compiler
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(file <postgresql-config-file>) system target)
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(match file
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(($ <postgresql-config-file> log-destination hba-file
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ident-file extra-config)
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(define (single-quote string)
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(if string
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(list "'" string "'")
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'()))
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(define contents
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(append-map
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(match-lambda
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((key) '())
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((key . #f) '())
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((key values ...) `(,key " = " ,@values "\n")))
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`(("log_destination" ,@(single-quote log-destination))
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("hba_file" ,@(single-quote hba-file))
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("ident_file" ,@(single-quote ident-file))
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,@extra-config)))
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(gexp->derivation
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"postgresql.conf"
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#~(call-with-output-file (ungexp output "out")
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(lambda (port)
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(display
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(string-append #$@contents)
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port)))
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#:local-build? #t))))
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(define-record-type* <postgresql-configuration>
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postgresql-configuration make-postgresql-configuration
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postgresql-configuration?
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(postgresql postgresql-configuration-postgresql ;<package>
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(default postgresql))
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(port postgresql-configuration-port
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(default 5432))
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(locale postgresql-configuration-locale
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(default "en_US.utf8"))
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(config-file postgresql-configuration-file
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(default (postgresql-config-file)))
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(data-directory postgresql-configuration-data-directory
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(default "/var/lib/postgresql/data")))
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(define %postgresql-accounts
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(list (user-group (name "postgres") (system? #t))
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(user-account
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(name "postgres")
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(group "postgres")
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(system? #t)
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(comment "PostgreSQL server user")
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(home-directory "/var/empty")
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(shell (file-append shadow "/sbin/nologin")))))
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(define postgresql-activation
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(match-lambda
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(($ <postgresql-configuration> postgresql port locale config-file data-directory)
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#~(begin
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(use-modules (guix build utils)
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(ice-9 match))
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(let ((user (getpwnam "postgres"))
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(initdb (string-append #$postgresql "/bin/initdb"))
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(initdb-args
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(append
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(if #$locale
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(list (string-append "--locale=" #$locale))
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'()))))
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;; Create db state directory.
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(mkdir-p #$data-directory)
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(chown #$data-directory (passwd:uid user) (passwd:gid user))
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;; Drop privileges and init state directory in a new
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;; process. Wait for it to finish before proceeding.
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(match (primitive-fork)
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(0
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;; Exit with a non-zero status code if an exception is thrown.
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(dynamic-wind
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(const #t)
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(lambda ()
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(setgid (passwd:gid user))
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(setuid (passwd:uid user))
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(primitive-exit
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(apply system*
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initdb
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"-D"
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#$data-directory
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initdb-args)))
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(lambda ()
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(primitive-exit 1))))
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(pid (waitpid pid))))))))
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(define postgresql-shepherd-service
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(match-lambda
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(($ <postgresql-configuration> postgresql port locale config-file data-directory)
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(let* ((pg_ctl-wrapper
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;; Wrapper script that switches to the 'postgres' user before
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;; launching daemon.
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(program-file
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"pg_ctl-wrapper"
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#~(begin
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(use-modules (ice-9 match)
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(ice-9 format))
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(match (command-line)
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((_ mode)
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(let ((user (getpwnam "postgres"))
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(pg_ctl #$(file-append postgresql "/bin/pg_ctl"))
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(options (format #f "--config-file=~a -p ~d"
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#$config-file #$port)))
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(setgid (passwd:gid user))
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(setuid (passwd:uid user))
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(execl pg_ctl pg_ctl "-D" #$data-directory "-o" options
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mode)))))))
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(pid-file (in-vicinity data-directory "postmaster.pid"))
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(action (lambda args
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#~(lambda _
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(invoke #$pg_ctl-wrapper #$@args)
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(match '#$args
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(("start")
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(call-with-input-file #$pid-file read))
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(_ #t))))))
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(list (shepherd-service
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(provision '(postgres))
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(documentation "Run the PostgreSQL daemon.")
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(requirement '(user-processes loopback syslogd))
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(modules `((ice-9 match)
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,@%default-modules))
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(start (action "start"))
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(stop (action "stop"))))))))
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(define postgresql-service-type
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(service-type (name 'postgresql)
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(extensions
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(list (service-extension shepherd-root-service-type
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postgresql-shepherd-service)
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(service-extension activation-service-type
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postgresql-activation)
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(service-extension account-service-type
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(const %postgresql-accounts))))
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(default-value (postgresql-configuration))))
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(define* (postgresql-service #:key (postgresql postgresql)
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(port 5432)
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(locale "en_US.utf8")
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(config-file (postgresql-config-file))
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(data-directory "/var/lib/postgresql/data"))
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"Return a service that runs @var{postgresql}, the PostgreSQL database server.
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The PostgreSQL daemon loads its runtime configuration from @var{config-file}
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and stores the database cluster in @var{data-directory}."
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(service postgresql-service-type
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(postgresql-configuration
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(postgresql postgresql)
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(port port)
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(locale locale)
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(config-file config-file)
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(data-directory data-directory))))
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;;;
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;;; Memcached
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;;;
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(define-record-type* <memcached-configuration>
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memcached-configuration make-memcached-configuration
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memcached-configuration?
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(memcached memcached-configuration-memcached ;<package>
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(default memcached))
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(interfaces memcached-configuration-interfaces
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(default '("0.0.0.0")))
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(tcp-port memcached-configuration-tcp-port
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(default 11211))
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(udp-port memcached-configuration-udp-port
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(default 11211))
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(additional-options memcached-configuration-additional-options
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(default '())))
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(define %memcached-accounts
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(list (user-group (name "memcached") (system? #t))
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(user-account
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(name "memcached")
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(group "memcached")
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(system? #t)
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(comment "Memcached server user")
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(home-directory "/var/empty")
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(shell (file-append shadow "/sbin/nologin")))))
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(define memcached-activation
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#~(begin
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(use-modules (guix build utils))
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(let ((user (getpwnam "memcached")))
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(mkdir-p "/var/run/memcached")
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(chown "/var/run/memcached"
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(passwd:uid user) (passwd:gid user)))))
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(define memcached-shepherd-service
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(match-lambda
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(($ <memcached-configuration> memcached interfaces tcp-port udp-port
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additional-options)
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(with-imported-modules (source-module-closure
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'((gnu build shepherd)))
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(list (shepherd-service
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(provision '(memcached))
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(documentation "Run the Memcached daemon.")
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(requirement '(user-processes loopback))
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(modules '((gnu build shepherd)))
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(start #~(make-forkexec-constructor
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`(#$(file-append memcached "/bin/memcached")
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"-l" #$(string-join interfaces ",")
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"-p" #$(number->string tcp-port)
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"-U" #$(number->string udp-port)
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"--daemon"
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;; Memcached changes to the memcached user prior to
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;; writing the pid file, so write it to a directory
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;; that memcached owns.
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"-P" "/var/run/memcached/pid"
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"-u" "memcached"
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,#$@additional-options)
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#:log-file "/var/log/memcached"
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#:pid-file "/var/run/memcached/pid"))
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(stop #~(make-kill-destructor))))))))
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(define memcached-service-type
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(service-type (name 'memcached)
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(extensions
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(list (service-extension shepherd-root-service-type
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memcached-shepherd-service)
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(service-extension activation-service-type
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(const memcached-activation))
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(service-extension account-service-type
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(const %memcached-accounts))))
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(default-value (memcached-configuration))))
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;;;
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;;; MongoDB
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;;;
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(define %default-mongodb-configuration-file
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(plain-file
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"mongodb.yaml"
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"# GNU Guix: MongoDB default configuration file
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processManagement:
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pidFilePath: /var/run/mongodb/pid
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storage:
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dbPath: /var/lib/mongodb
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"))
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(define-record-type* <mongodb-configuration>
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mongodb-configuration make-mongodb-configuration
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mongodb-configuration?
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(mongodb mongodb-configuration-mongodb
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(default mongodb))
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(config-file mongodb-configuration-config-file
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(default %default-mongodb-configuration-file))
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(data-directory mongodb-configuration-data-directory
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(default "/var/lib/mongodb")))
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(define %mongodb-accounts
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(list (user-group (name "mongodb") (system? #t))
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(user-account
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(name "mongodb")
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(group "mongodb")
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(system? #t)
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(comment "Mongodb server user")
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(home-directory "/var/lib/mongodb")
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(shell (file-append shadow "/sbin/nologin")))))
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(define mongodb-activation
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(match-lambda
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(($ <mongodb-configuration> mongodb config-file data-directory)
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#~(begin
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(use-modules (guix build utils))
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(let ((user (getpwnam "mongodb")))
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(for-each
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(lambda (directory)
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(mkdir-p directory)
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(chown directory
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(passwd:uid user) (passwd:gid user)))
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'("/var/run/mongodb" #$data-directory)))))))
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(define mongodb-shepherd-service
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(match-lambda
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(($ <mongodb-configuration> mongodb config-file data-directory)
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(shepherd-service
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(provision '(mongodb))
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(documentation "Run the Mongodb daemon.")
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(requirement '(user-processes loopback))
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(start #~(make-forkexec-constructor
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`(,(string-append #$mongodb "/bin/mongod")
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"--config"
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,#$config-file)
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#:user "mongodb"
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#:group "mongodb"
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#:pid-file "/var/run/mongodb/pid"
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#:log-file "/var/log/mongodb.log"))
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(stop #~(make-kill-destructor))))))
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(define mongodb-service-type
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(service-type
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(name 'mongodb)
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(description "Run the MongoDB document database server.")
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(extensions
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(list (service-extension shepherd-root-service-type
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(compose list
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mongodb-shepherd-service))
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(service-extension activation-service-type
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mongodb-activation)
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(service-extension account-service-type
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(const %mongodb-accounts))))
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(default-value
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(mongodb-configuration))))
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;;;
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;;; MySQL.
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;;;
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(define-record-type* <mysql-configuration>
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mysql-configuration make-mysql-configuration
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mysql-configuration?
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(mysql mysql-configuration-mysql (default mariadb))
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(port mysql-configuration-port (default 3306)))
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(define %mysql-accounts
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(list (user-group
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(name "mysql")
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(system? #t))
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(user-account
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(name "mysql")
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(group "mysql")
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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 mysql-configuration-file
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(match-lambda
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(($ <mysql-configuration> mysql port)
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(mixed-text-file "my.cnf" "[mysqld]
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datadir=/var/lib/mysql
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socket=/run/mysqld/mysqld.sock
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port=" (number->string port) "
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"))))
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(define (%mysql-activation config)
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"Return an activation gexp for the MySQL or MariaDB database server."
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(let ((mysql (mysql-configuration-mysql config))
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(my.cnf (mysql-configuration-file config)))
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#~(begin
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(use-modules (ice-9 popen)
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(guix build utils))
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(let* ((mysqld (string-append #$mysql "/bin/mysqld"))
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(user (getpwnam "mysql"))
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(uid (passwd:uid user))
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(gid (passwd:gid user))
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(datadir "/var/lib/mysql")
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(rundir "/run/mysqld"))
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(mkdir-p datadir)
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(chown datadir uid gid)
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(mkdir-p rundir)
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(chown rundir uid gid)
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;; Initialize the database when it doesn't exist.
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(when (not (file-exists? (string-append datadir "/mysql")))
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(if (string-prefix? "mysql-" (strip-store-file-name #$mysql))
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;; For MySQL.
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(system* mysqld
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(string-append "--defaults-file=" #$my.cnf)
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"--initialize"
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"--user=mysql")
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;; For MariaDB.
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;; XXX: The 'mysql_install_db' script doesn't work directly
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;; due to missing 'mkdir' in PATH.
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(let ((p (open-pipe* OPEN_WRITE mysqld
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(string-append
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"--defaults-file=" #$my.cnf)
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"--bootstrap"
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"--user=mysql")))
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;; Create the system database, as does by 'mysql_install_db'.
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(display "create database mysql;\n" p)
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(display "use mysql;\n" p)
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(for-each
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(lambda (sql)
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(call-with-input-file
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(string-append #$mysql "/share/mysql/" sql)
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(lambda (in) (dump-port in p))))
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'("mysql_system_tables.sql"
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"mysql_performance_tables.sql"
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"mysql_system_tables_data.sql"
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"fill_help_tables.sql"))
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;; Remove the anonymous user and disable root access from
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;; remote machines, as does by 'mysql_secure_installation'.
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(display "
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DELETE FROM user WHERE User='';
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DELETE FROM user WHERE User='root' AND
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Host NOT IN ('localhost', '127.0.0.1', '::1');
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FLUSH PRIVILEGES;
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" p)
|
||
(close-pipe p))))))))
|
||
|
||
(define (mysql-shepherd-service config)
|
||
(list (shepherd-service
|
||
(provision '(mysql))
|
||
(documentation "Run the MySQL server.")
|
||
(start (let ((mysql (mysql-configuration-mysql config))
|
||
(my.cnf (mysql-configuration-file config)))
|
||
#~(make-forkexec-constructor
|
||
(list (string-append #$mysql "/bin/mysqld")
|
||
(string-append "--defaults-file=" #$my.cnf))
|
||
#:user "mysql" #:group "mysql")))
|
||
(stop #~(make-kill-destructor)))))
|
||
|
||
(define mysql-service-type
|
||
(service-type
|
||
(name 'mysql)
|
||
(extensions
|
||
(list (service-extension account-service-type
|
||
(const %mysql-accounts))
|
||
(service-extension activation-service-type
|
||
%mysql-activation)
|
||
(service-extension shepherd-root-service-type
|
||
mysql-shepherd-service)))
|
||
(default-value (mysql-configuration))))
|
||
|
||
(define* (mysql-service #:key (config (mysql-configuration)))
|
||
"Return a service that runs @command{mysqld}, the MySQL or MariaDB
|
||
database server.
|
||
|
||
The optional @var{config} argument specifies the configuration for
|
||
@command{mysqld}, which should be a @code{<mysql-configuration>} object."
|
||
(service mysql-service-type config))
|
||
|
||
|
||
;;;
|
||
;;; Redis
|
||
;;;
|
||
|
||
(define-record-type* <redis-configuration>
|
||
redis-configuration make-redis-configuration
|
||
redis-configuration?
|
||
(redis redis-configuration-redis ;<package>
|
||
(default redis))
|
||
(bind redis-configuration-bind
|
||
(default "127.0.0.1"))
|
||
(port redis-configuration-port
|
||
(default 6379))
|
||
(working-directory redis-configuration-working-directory
|
||
(default "/var/lib/redis"))
|
||
(config-file redis-configuration-config-file
|
||
(default #f)))
|
||
|
||
(define (default-redis.conf bind port working-directory)
|
||
(mixed-text-file "redis.conf"
|
||
"bind " bind "\n"
|
||
"port " (number->string port) "\n"
|
||
"dir " working-directory "\n"
|
||
"daemonize no\n"))
|
||
|
||
(define %redis-accounts
|
||
(list (user-group (name "redis") (system? #t))
|
||
(user-account
|
||
(name "redis")
|
||
(group "redis")
|
||
(system? #t)
|
||
(comment "Redis server user")
|
||
(home-directory "/var/empty")
|
||
(shell (file-append shadow "/sbin/nologin")))))
|
||
|
||
(define redis-activation
|
||
(match-lambda
|
||
(($ <redis-configuration> redis bind port working-directory config-file)
|
||
#~(begin
|
||
(use-modules (guix build utils)
|
||
(ice-9 match))
|
||
|
||
(let ((user (getpwnam "redis")))
|
||
(mkdir-p #$working-directory)
|
||
(chown #$working-directory (passwd:uid user) (passwd:gid user)))))))
|
||
|
||
(define redis-shepherd-service
|
||
(match-lambda
|
||
(($ <redis-configuration> redis bind port working-directory config-file)
|
||
(let ((config-file
|
||
(or config-file
|
||
(default-redis.conf bind port working-directory))))
|
||
(list (shepherd-service
|
||
(provision '(redis))
|
||
(documentation "Run the Redis daemon.")
|
||
(requirement '(user-processes syslogd))
|
||
(start #~(make-forkexec-constructor
|
||
'(#$(file-append redis "/bin/redis-server")
|
||
#$config-file)
|
||
#:user "redis"
|
||
#:group "redis"))
|
||
(stop #~(make-kill-destructor))))))))
|
||
|
||
(define redis-service-type
|
||
(service-type (name 'redis)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
redis-shepherd-service)
|
||
(service-extension activation-service-type
|
||
redis-activation)
|
||
(service-extension account-service-type
|
||
(const %redis-accounts))))
|
||
(default-value (redis-configuration))))
|