blob: d6dc79282144e5b934dc9272890e4c61c47bd60a (
plain)
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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Danny Milosavljevic <dannym@scratchpost.org>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;;
;;; 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 docker)
#:use-module (gnu services)
#:use-module (gnu services configuration)
#:use-module (gnu services base)
#:use-module (gnu services dbus)
#:use-module (gnu services shepherd)
#:use-module (gnu system shadow)
#:use-module (gnu packages docker)
#:use-module (gnu packages linux) ;singularity
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (guix packages)
#:export (docker-configuration
docker-service-type
singularity-service-type))
;;; We're not using serialize-configuration, but we must define this because
;;; the define-configuration macro validates it exists.
(define (serialize-boolean field-name val)
"")
(define-configuration docker-configuration
(docker
(package docker)
"Docker daemon package.")
(containerd
(package containerd)
"containerd package.")
(proxy
(package docker-libnetwork-cmd-proxy)
"The proxy package to support inter-container and outside-container
loop-back communications.")
(enable-proxy?
(boolean #t)
"Enable or disable the user-land proxy (enabled by default)."))
(define %docker-accounts
(list (user-group (name "docker") (system? #t))))
(define (%containerd-activation config)
(let ((state-dir "/var/lib/containerd"))
#~(begin
(use-modules (guix build utils))
(mkdir-p #$state-dir))))
(define (%docker-activation config)
(%containerd-activation config)
(let ((state-dir "/var/lib/docker"))
#~(begin
(use-modules (guix build utils))
(mkdir-p #$state-dir))))
(define (containerd-shepherd-service config)
(let* ((package (docker-configuration-containerd config)))
(shepherd-service
(documentation "containerd daemon.")
(provision '(containerd))
(start #~(make-forkexec-constructor
(list (string-append #$package "/bin/containerd"))
#:log-file "/var/log/containerd.log"))
(stop #~(make-kill-destructor)))))
(define (docker-shepherd-service config)
(let* ((docker (docker-configuration-docker config))
(enable-proxy? (docker-configuration-enable-proxy? config))
(proxy (docker-configuration-proxy config)))
(shepherd-service
(documentation "Docker daemon.")
(provision '(dockerd))
(requirement '(containerd
dbus-system
elogind
file-system-/sys/fs/cgroup/blkio
file-system-/sys/fs/cgroup/cpu
file-system-/sys/fs/cgroup/cpuset
file-system-/sys/fs/cgroup/devices
file-system-/sys/fs/cgroup/memory
file-system-/sys/fs/cgroup/pids
networking
udev))
(start #~(make-forkexec-constructor
(list (string-append #$docker "/bin/dockerd")
"-p" "/var/run/docker.pid"
(if #$enable-proxy? "--userland-proxy" "")
"--userland-proxy-path" (string-append #$proxy
"/bin/proxy"))
#:pid-file "/var/run/docker.pid"
#:log-file "/var/log/docker.log"))
(stop #~(make-kill-destructor)))))
(define docker-service-type
(service-type (name 'docker)
(description "Provide capability to run Docker application
bundles in Docker containers.")
(extensions
(list
(service-extension activation-service-type
%docker-activation)
(service-extension shepherd-root-service-type
(lambda (config)
(list (containerd-shepherd-service config)
(docker-shepherd-service config))))
(service-extension account-service-type
(const %docker-accounts))))
(default-value (docker-configuration))))
;;;
;;; Singularity.
;;;
(define %singularity-activation
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils))
(define %mount-directory
"/var/singularity/mnt/")
;; Create the directories that Singularity 2.6 expects to find. Make
;; them #o755 like the 'install-data-hook' rule in 'Makefile.am' of
;; Singularity 2.6.1.
(for-each (lambda (directory)
(let ((directory (string-append %mount-directory
directory)))
(mkdir-p directory)
(chmod directory #o755)))
'("container" "final" "overlay" "session"))
(chmod %mount-directory #o755))))
(define (singularity-setuid-programs singularity)
"Return the setuid-root programs that SINGULARITY needs."
(define helpers
;; The helpers, under a meaningful name.
(computed-file "singularity-setuid-helpers"
#~(begin
(mkdir #$output)
(for-each (lambda (program)
(symlink (string-append #$singularity
"/libexec/singularity"
"/bin/"
program "-suid")
(string-append #$output
"/singularity-"
program
"-helper")))
'("action" "mount" "start")))))
(list (file-append helpers "/singularity-action-helper")
(file-append helpers "/singularity-mount-helper")
(file-append helpers "/singularity-start-helper")))
(define singularity-service-type
(service-type (name 'singularity)
(description
"Install the Singularity application bundle tool.")
(extensions
(list (service-extension setuid-program-service-type
singularity-setuid-programs)
(service-extension activation-service-type
(const %singularity-activation))))
(default-value singularity)))
|