root / daemons / daemon-util.in @ 6e3bf290
History | View | Annotate | Download (6.7 kB)
1 |
#!/bin/bash |
---|---|
2 |
# |
3 |
|
4 |
# Copyright (C) 2009, 2011, 2012 Google Inc. |
5 |
# |
6 |
# This program is free software; you can redistribute it and/or modify |
7 |
# it under the terms of the GNU General Public License as published by |
8 |
# the Free Software Foundation; either version 2 of the License, or |
9 |
# (at your option) any later version. |
10 |
# |
11 |
# This program is distributed in the hope that it will be useful, but |
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 |
# General Public License for more details. |
15 |
# |
16 |
# You should have received a copy of the GNU General Public License |
17 |
# along with this program; if not, write to the Free Software |
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
19 |
# 02110-1301, USA. |
20 |
|
21 |
set -e |
22 |
|
23 |
@SHELL_ENV_INIT@ |
24 |
|
25 |
readonly defaults_file="$SYSCONFDIR/default/ganeti" |
26 |
|
27 |
# This is a list of all daemons and the order in which they're started. The |
28 |
# order is important as there are dependencies between them. On shutdown, |
29 |
# they're stopped in reverse order. |
30 |
DAEMONS=( |
31 |
ganeti-noded |
32 |
ganeti-masterd |
33 |
ganeti-rapi |
34 |
) |
35 |
|
36 |
_confd_enabled() { |
37 |
[[ "@CUSTOM_ENABLE_CONFD@" == True ]] |
38 |
} |
39 |
|
40 |
if _confd_enabled; then |
41 |
DAEMONS+=( ganeti-confd ) |
42 |
fi |
43 |
|
44 |
NODED_ARGS= |
45 |
MASTERD_ARGS= |
46 |
CONFD_ARGS= |
47 |
RAPI_ARGS= |
48 |
|
49 |
# Read defaults file if it exists |
50 |
if [[ -s $defaults_file ]]; then |
51 |
. $defaults_file |
52 |
fi |
53 |
|
54 |
# Meant to facilitate use utilities in /etc/rc.d/init.d/functions in case |
55 |
# start-stop-daemon is not available. |
56 |
_ignore_error() { |
57 |
eval "$@" || : |
58 |
} |
59 |
|
60 |
_daemon_pidfile() { |
61 |
echo "$RUN_DIR/$1.pid" |
62 |
} |
63 |
|
64 |
_daemon_executable() { |
65 |
echo "@PREFIX@/sbin/$1" |
66 |
} |
67 |
|
68 |
_daemon_usergroup() { |
69 |
case "$1" in |
70 |
masterd) |
71 |
echo "@GNTMASTERUSER@:@GNTMASTERDGROUP@" |
72 |
;; |
73 |
confd) |
74 |
echo "@GNTCONFDUSER@:@GNTCONFDGROUP@" |
75 |
;; |
76 |
rapi) |
77 |
echo "@GNTRAPIUSER@:@GNTRAPIGROUP@" |
78 |
;; |
79 |
noded) |
80 |
echo "@GNTNODEDUSER@:@GNTDAEMONSGROUP@" |
81 |
;; |
82 |
*) |
83 |
echo "root:@GNTDAEMONSGROUP@" |
84 |
;; |
85 |
esac |
86 |
} |
87 |
|
88 |
# Checks whether the local machine is part of a cluster |
89 |
check_config() { |
90 |
local server_pem=$DATA_DIR/server.pem |
91 |
local fname |
92 |
|
93 |
for fname in $server_pem; do |
94 |
if [[ ! -f $fname ]]; then |
95 |
echo "Missing configuration file $fname" >&2 |
96 |
return 1 |
97 |
fi |
98 |
done |
99 |
|
100 |
return 0 |
101 |
} |
102 |
|
103 |
# Checks the exit code of a daemon |
104 |
check_exitcode() { |
105 |
if [[ "$#" -lt 1 ]]; then |
106 |
echo 'Missing exit code.' >&2 |
107 |
return 1 |
108 |
fi |
109 |
|
110 |
local rc="$1"; shift |
111 |
|
112 |
case "$rc" in |
113 |
0) ;; |
114 |
11) |
115 |
echo "not master" |
116 |
;; |
117 |
*) |
118 |
echo "exit code $rc" |
119 |
return 1 |
120 |
;; |
121 |
esac |
122 |
|
123 |
return 0 |
124 |
} |
125 |
|
126 |
# Prints path to PID file for a daemon. |
127 |
daemon_pidfile() { |
128 |
if [[ "$#" -lt 1 ]]; then |
129 |
echo 'Missing daemon name.' >&2 |
130 |
return 1 |
131 |
fi |
132 |
|
133 |
local name="$1"; shift |
134 |
|
135 |
_daemon_pidfile $name |
136 |
} |
137 |
|
138 |
# Prints path to daemon executable. |
139 |
daemon_executable() { |
140 |
if [[ "$#" -lt 1 ]]; then |
141 |
echo 'Missing daemon name.' >&2 |
142 |
return 1 |
143 |
fi |
144 |
|
145 |
local name="$1"; shift |
146 |
|
147 |
_daemon_executable $name |
148 |
} |
149 |
|
150 |
# Prints a list of all daemons in the order in which they should be started |
151 |
list_start_daemons() { |
152 |
local name |
153 |
|
154 |
for name in "${DAEMONS[@]}"; do |
155 |
echo "$name" |
156 |
done |
157 |
} |
158 |
|
159 |
# Prints a list of all daemons in the order in which they should be stopped |
160 |
list_stop_daemons() { |
161 |
list_start_daemons | tac |
162 |
} |
163 |
|
164 |
# Checks whether a daemon name is known |
165 |
is_daemon_name() { |
166 |
if [[ "$#" -lt 1 ]]; then |
167 |
echo 'Missing daemon name.' >&2 |
168 |
return 1 |
169 |
fi |
170 |
|
171 |
local name="$1"; shift |
172 |
|
173 |
for i in "${DAEMONS[@]}"; do |
174 |
if [[ "$i" == "$name" ]]; then |
175 |
return 0 |
176 |
fi |
177 |
done |
178 |
|
179 |
echo "Unknown daemon name '$name'" >&2 |
180 |
return 1 |
181 |
} |
182 |
|
183 |
# Checks whether daemon is running |
184 |
check() { |
185 |
if [[ "$#" -lt 1 ]]; then |
186 |
echo 'Missing daemon name.' >&2 |
187 |
return 1 |
188 |
fi |
189 |
|
190 |
local name="$1"; shift |
191 |
local pidfile=$(_daemon_pidfile $name) |
192 |
local daemonexec=$(_daemon_executable $name) |
193 |
|
194 |
if type -p start-stop-daemon >/dev/null; then |
195 |
start-stop-daemon --stop --signal 0 --quiet \ |
196 |
--pidfile $pidfile |
197 |
else |
198 |
_ignore_error status \ |
199 |
-p $pidfile \ |
200 |
$daemonexec |
201 |
fi |
202 |
} |
203 |
|
204 |
# Starts a daemon |
205 |
start() { |
206 |
if [[ "$#" -lt 1 ]]; then |
207 |
echo 'Missing daemon name.' >&2 |
208 |
return 1 |
209 |
fi |
210 |
|
211 |
local name="$1"; shift |
212 |
# Convert daemon name to uppercase after removing "ganeti-" prefix |
213 |
local plain_name=${name#ganeti-} |
214 |
local ucname=$(tr a-z A-Z <<<$plain_name) |
215 |
local pidfile=$(_daemon_pidfile $name) |
216 |
local usergroup=$(_daemon_usergroup $plain_name) |
217 |
local daemonexec=$(_daemon_executable $name) |
218 |
|
219 |
if [[ "$name" == ganeti-confd ]] && ! _confd_enabled; then |
220 |
echo 'ganeti-confd disabled at build time' >&2 |
221 |
return 1 |
222 |
fi |
223 |
|
224 |
# Read $<daemon>_ARGS and $EXTRA_<daemon>_ARGS |
225 |
eval local args="\"\$${ucname}_ARGS \$EXTRA_${ucname}_ARGS\"" |
226 |
|
227 |
@PKGLIBDIR@/ensure-dirs |
228 |
|
229 |
if type -p start-stop-daemon >/dev/null; then |
230 |
start-stop-daemon --start --quiet --oknodo \ |
231 |
--pidfile $pidfile \ |
232 |
--startas $daemonexec \ |
233 |
--chuid $usergroup \ |
234 |
-- $args "$@" |
235 |
else |
236 |
# TODO: Find a way to start daemon with a group, until then the group must |
237 |
# be removed |
238 |
_ignore_error daemon \ |
239 |
--pidfile $pidfile \ |
240 |
--user ${usergroup%:*} \ |
241 |
$daemonexec $args "$@" |
242 |
fi |
243 |
} |
244 |
|
245 |
# Stops a daemon |
246 |
stop() { |
247 |
if [[ "$#" -lt 1 ]]; then |
248 |
echo 'Missing daemon name.' >&2 |
249 |
return 1 |
250 |
fi |
251 |
|
252 |
local name="$1"; shift |
253 |
local pidfile=$(_daemon_pidfile $name) |
254 |
|
255 |
if type -p start-stop-daemon >/dev/null; then |
256 |
start-stop-daemon --stop --quiet --oknodo --retry 30 \ |
257 |
--pidfile $pidfile |
258 |
else |
259 |
_ignore_error killproc -p $pidfile $name |
260 |
fi |
261 |
} |
262 |
|
263 |
# Starts a daemon if it's not yet running |
264 |
check_and_start() { |
265 |
local name="$1" |
266 |
|
267 |
if ! check $name; then |
268 |
start $name |
269 |
fi |
270 |
} |
271 |
|
272 |
# Starts the master role |
273 |
start_master() { |
274 |
start ganeti-masterd |
275 |
start ganeti-rapi |
276 |
} |
277 |
|
278 |
# Stops the master role |
279 |
stop_master() { |
280 |
stop ganeti-rapi |
281 |
stop ganeti-masterd |
282 |
} |
283 |
|
284 |
# Start all daemons |
285 |
start_all() { |
286 |
for i in $(list_start_daemons); do |
287 |
local rc=0 |
288 |
|
289 |
# Try to start daemon |
290 |
start $i || rc=$? |
291 |
|
292 |
if ! errmsg=$(check_exitcode $rc); then |
293 |
echo "$errmsg" >&2 |
294 |
return 1 |
295 |
fi |
296 |
done |
297 |
|
298 |
return 0 |
299 |
} |
300 |
|
301 |
# Stop all daemons |
302 |
stop_all() { |
303 |
for i in $(list_stop_daemons); do |
304 |
stop $i |
305 |
done |
306 |
} |
307 |
|
308 |
# Reloads the SSH keys |
309 |
reload_ssh_keys() { |
310 |
@RPL_SSH_INITD_SCRIPT@ restart |
311 |
} |
312 |
|
313 |
# Read @SYSCONFDIR@/rc.d/init.d/functions if start-stop-daemon not available |
314 |
if ! type -p start-stop-daemon >/dev/null && \ |
315 |
[[ -f @SYSCONFDIR@/rc.d/init.d/functions ]]; then |
316 |
_ignore_error . @SYSCONFDIR@/rc.d/init.d/functions |
317 |
fi |
318 |
|
319 |
if [[ "$#" -lt 1 ]]; then |
320 |
echo "Usage: $0 <action>" >&2 |
321 |
exit 1 |
322 |
fi |
323 |
|
324 |
orig_action=$1; shift |
325 |
|
326 |
if [[ "$orig_action" == *_* ]]; then |
327 |
echo "Command must not contain underscores" >&2 |
328 |
exit 1 |
329 |
fi |
330 |
|
331 |
# Replace all dashes (-) with underlines (_) |
332 |
action=${orig_action//-/_} |
333 |
|
334 |
# Is it a known function? |
335 |
if ! declare -F "$action" >/dev/null 2>&1; then |
336 |
echo "Unknown command: $orig_action" >&2 |
337 |
exit 1 |
338 |
fi |
339 |
|
340 |
# Call handler function |
341 |
$action "$@" |