blob: 6c3b829df741d76df07e1219b78c9beab3d17078 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
;;;
;;; 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 databases)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu system shadow)
#:use-module (gnu packages admin)
#:use-module (gnu packages databases)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (ice-9 match)
#:export (postgresql-service))
;;; Commentary:
;;;
;;; Database services.
;;;
;;; Code:
(define-record-type* <postgresql-configuration>
postgresql-configuration make-postgresql-configuration
postgresql-configuration?
(postgresql postgresql-configuration-postgresql ;<package>
(default postgresql))
(config-file postgresql-configuration-file)
(data-directory postgresql-configuration-data-directory))
(define %default-postgres-hba
(plain-file "pg_hba.conf"
"
local all all trust
host all all 127.0.0.1/32 trust
host all all ::1/128 trust"))
(define %default-postgres-ident
(plain-file "pg_ident.conf"
"# MAPNAME SYSTEM-USERNAME PG-USERNAME"))
(define %default-postgres-config
(mixed-text-file "postgresql.conf"
"hba_file = '" %default-postgres-hba "'\n"
"ident_file = '" %default-postgres-ident "'\n"))
(define %postgresql-accounts
(list (user-group (name "postgres") (system? #t))
(user-account
(name "postgres")
(group "postgres")
(system? #t)
(comment "PostgreSQL server user")
(home-directory "/var/empty")
(shell #~(string-append #$shadow "/sbin/nologin")))))
(define postgresql-activation
(match-lambda
(($ <postgresql-configuration> postgresql config-file data-directory)
#~(begin
(use-modules (guix build utils)
(ice-9 match))
(let ((user (getpwnam "postgres"))
(initdb (string-append #$postgresql "/bin/initdb")))
;; Create db state directory.
(mkdir-p #$data-directory)
(chown #$data-directory (passwd:uid user) (passwd:gid user))
;; Drop privileges and init state directory in a new
;; process. Wait for it to finish before proceeding.
(match (primitive-fork)
(0
;; Exit with a non-zero status code if an exception is thrown.
(dynamic-wind
(const #t)
(lambda ()
(setgid (passwd:gid user))
(setuid (passwd:uid user))
(primitive-exit (system* initdb "-D" #$data-directory)))
(lambda ()
(primitive-exit 1))))
(pid (waitpid pid))))))))
(define postgresql-shepherd-service
(match-lambda
(($ <postgresql-configuration> postgresql config-file data-directory)
(let ((start-script
;; Wrapper script that switches to the 'postgres' user before
;; launching daemon.
(program-file "start-postgres"
#~(let ((user (getpwnam "postgres"))
(postgres (string-append #$postgresql
"/bin/postgres")))
(setgid (passwd:gid user))
(setuid (passwd:uid user))
(system* postgres
(string-append "--config-file="
#$config-file)
"-D" #$data-directory)))))
(list (shepherd-service
(provision '(postgres))
(documentation "Run the PostgreSQL daemon.")
(requirement '(user-processes loopback))
(start #~(make-forkexec-constructor #$start-script))
(stop #~(make-kill-destructor))))))))
(define postgresql-service-type
(service-type (name 'postgresql)
(extensions
(list (service-extension shepherd-root-service-type
postgresql-shepherd-service)
(service-extension activation-service-type
postgresql-activation)
(service-extension account-service-type
(const %postgresql-accounts))))))
(define* (postgresql-service #:key (postgresql postgresql)
(config-file %default-postgres-config)
(data-directory "/var/lib/postgresql/data"))
"Return a service that runs @var{postgresql}, the PostgreSQL database server.
The PostgreSQL daemon loads its runtime configuration from @var{config-file}
and stores the database cluster in @var{data-directory}."
(service postgresql-service-type
(postgresql-configuration
(postgresql postgresql)
(config-file config-file)
(data-directory data-directory))))
|
