root / daemons / daemon-util.in @ e85444d0
History | View | Annotate | Download (5.3 kB)
1 |
#!/bin/bash |
---|---|
2 |
# |
3 |
|
4 |
# Copyright (C) 2009, 2011 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 |
defaults_file=@SYSCONFDIR@/default/ganeti |
24 |
|
25 |
# This is a list of all daemons and the order in which they're started. The |
26 |
# order is important as there are dependencies between them. On shutdown, |
27 |
# they're stopped in reverse order. |
28 |
DAEMONS=( |
29 |
ganeti-noded |
30 |
ganeti-masterd |
31 |
ganeti-rapi |
32 |
) |
33 |
|
34 |
if [[ "@CUSTOM_ENABLE_CONFD@" == True ]]; then |
35 |
DAEMONS+=( ganeti-confd ) |
36 |
fi |
37 |
|
38 |
NODED_ARGS= |
39 |
MASTERD_ARGS= |
40 |
CONFD_ARGS= |
41 |
RAPI_ARGS= |
42 |
|
43 |
# Read defaults file if it exists |
44 |
if [[ -s $defaults_file ]]; then |
45 |
. $defaults_file |
46 |
fi |
47 |
|
48 |
_daemon_pidfile() { |
49 |
echo "@LOCALSTATEDIR@/run/ganeti/$1.pid" |
50 |
} |
51 |
|
52 |
_daemon_executable() { |
53 |
echo "@PREFIX@/sbin/$1" |
54 |
} |
55 |
|
56 |
_daemon_usergroup() { |
57 |
case "$1" in |
58 |
masterd) |
59 |
echo "@GNTMASTERUSER@:@GNTMASTERDGROUP@" |
60 |
;; |
61 |
confd) |
62 |
echo "@GNTCONFDUSER@:@GNTCONFDGROUP@" |
63 |
;; |
64 |
rapi) |
65 |
echo "@GNTRAPIUSER@:@GNTRAPIGROUP@" |
66 |
;; |
67 |
noded) |
68 |
echo "@GNTNODEDUSER@:@GNTDAEMONSGROUP@" |
69 |
;; |
70 |
*) |
71 |
echo "root:@GNTDAEMONSGROUP@" |
72 |
;; |
73 |
esac |
74 |
} |
75 |
|
76 |
# Checks whether the local machine is part of a cluster |
77 |
check_config() { |
78 |
local server_pem=@LOCALSTATEDIR@/lib/ganeti/server.pem |
79 |
local fname |
80 |
|
81 |
for fname in $server_pem; do |
82 |
if [[ ! -f $fname ]]; then |
83 |
echo "Missing configuration file $fname" >&2 |
84 |
return 1 |
85 |
fi |
86 |
done |
87 |
|
88 |
return 0 |
89 |
} |
90 |
|
91 |
# Checks the exit code of a daemon |
92 |
check_exitcode() { |
93 |
if [[ "$#" -lt 1 ]]; then |
94 |
echo 'Missing exit code.' >&2 |
95 |
return 1 |
96 |
fi |
97 |
|
98 |
local rc="$1"; shift |
99 |
|
100 |
case "$rc" in |
101 |
0) ;; |
102 |
11) |
103 |
echo "not master" |
104 |
;; |
105 |
*) |
106 |
echo "exit code $rc" |
107 |
return 1 |
108 |
;; |
109 |
esac |
110 |
|
111 |
return 0 |
112 |
} |
113 |
|
114 |
# Prints a list of all daemons in the order in which they should be started |
115 |
list_start_daemons() { |
116 |
local name |
117 |
|
118 |
for name in "${DAEMONS[@]}"; do |
119 |
echo "$name" |
120 |
done |
121 |
} |
122 |
|
123 |
# Prints a list of all daemons in the order in which they should be stopped |
124 |
list_stop_daemons() { |
125 |
list_start_daemons | tac |
126 |
} |
127 |
|
128 |
# Checks whether a daemon name is known |
129 |
is_daemon_name() { |
130 |
if [[ "$#" -lt 1 ]]; then |
131 |
echo 'Missing daemon name.' >&2 |
132 |
return 1 |
133 |
fi |
134 |
|
135 |
local name="$1"; shift |
136 |
|
137 |
for i in "${DAEMONS[@]}"; do |
138 |
if [[ "$i" == "$name" ]]; then |
139 |
return 0 |
140 |
fi |
141 |
done |
142 |
|
143 |
echo "Unknown daemon name '$name'" >&2 |
144 |
return 1 |
145 |
} |
146 |
|
147 |
# Checks whether daemon is running |
148 |
check() { |
149 |
if [[ "$#" -lt 1 ]]; then |
150 |
echo 'Missing daemon name.' >&2 |
151 |
return 1 |
152 |
fi |
153 |
|
154 |
local name="$1"; shift |
155 |
|
156 |
start-stop-daemon --stop --signal 0 --quiet \ |
157 |
--pidfile $(_daemon_pidfile $name) |
158 |
} |
159 |
|
160 |
# Starts a daemon |
161 |
start() { |
162 |
if [[ "$#" -lt 1 ]]; then |
163 |
echo 'Missing daemon name.' >&2 |
164 |
return 1 |
165 |
fi |
166 |
|
167 |
local name="$1"; shift |
168 |
|
169 |
if [[ "$name" == ganeti-confd && |
170 |
"@CUSTOM_ENABLE_CONFD@" == False ]]; then |
171 |
echo 'ganeti-confd disabled at build time' >&2 |
172 |
return 1 |
173 |
fi |
174 |
|
175 |
# Convert daemon name to uppercase after removing "ganeti-" prefix |
176 |
local plain_name=${name#ganeti-} |
177 |
local ucname=$(tr a-z A-Z <<<$plain_name) |
178 |
|
179 |
# Read $<daemon>_ARGS and $EXTRA_<daemon>_ARGS |
180 |
eval local args="\"\$${ucname}_ARGS \$EXTRA_${ucname}_ARGS\"" |
181 |
|
182 |
@PKGLIBDIR@/ensure-dirs |
183 |
|
184 |
start-stop-daemon --start --quiet --oknodo \ |
185 |
--pidfile $(_daemon_pidfile $name) \ |
186 |
--startas $(_daemon_executable $name) \ |
187 |
--chuid $(_daemon_usergroup $plain_name) \ |
188 |
-- $args "$@" |
189 |
} |
190 |
|
191 |
# Stops a daemon |
192 |
stop() { |
193 |
if [[ "$#" -lt 1 ]]; then |
194 |
echo 'Missing daemon name.' >&2 |
195 |
return 1 |
196 |
fi |
197 |
|
198 |
local name="$1"; shift |
199 |
|
200 |
start-stop-daemon --stop --quiet --oknodo --retry 30 \ |
201 |
--pidfile $(_daemon_pidfile $name) |
202 |
} |
203 |
|
204 |
# Starts a daemon if it's not yet running |
205 |
check_and_start() { |
206 |
local name="$1" |
207 |
|
208 |
if ! check $name; then |
209 |
start $name |
210 |
fi |
211 |
} |
212 |
|
213 |
# Starts the master role |
214 |
start_master() { |
215 |
start ganeti-masterd |
216 |
start ganeti-rapi |
217 |
} |
218 |
|
219 |
# Stops the master role |
220 |
stop_master() { |
221 |
stop ganeti-rapi |
222 |
stop ganeti-masterd |
223 |
} |
224 |
|
225 |
# Start all daemons |
226 |
start_all() { |
227 |
for i in $(list_start_daemons); do |
228 |
local rc=0 |
229 |
|
230 |
# Try to start daemon |
231 |
start $i || rc=$? |
232 |
|
233 |
if ! errmsg=$(check_exitcode $rc); then |
234 |
echo "$errmsg" >&2 |
235 |
return 1 |
236 |
fi |
237 |
done |
238 |
|
239 |
return 0 |
240 |
} |
241 |
|
242 |
# Stop all daemons |
243 |
stop_all() { |
244 |
for i in $(list_stop_daemons); do |
245 |
stop $i |
246 |
done |
247 |
} |
248 |
|
249 |
# Reloads the SSH keys |
250 |
reload_ssh_keys() { |
251 |
@RPL_SSH_INITD_SCRIPT@ restart |
252 |
} |
253 |
|
254 |
if [[ "$#" -lt 1 ]]; then |
255 |
echo "Usage: $0 <action>" >&2 |
256 |
exit 1 |
257 |
fi |
258 |
|
259 |
orig_action=$1; shift |
260 |
|
261 |
if [[ "$orig_action" == *_* ]]; then |
262 |
echo "Command must not contain underscores" >&2 |
263 |
exit 1 |
264 |
fi |
265 |
|
266 |
# Replace all dashes (-) with underlines (_) |
267 |
action=${orig_action//-/_} |
268 |
|
269 |
# Is it a known function? |
270 |
if ! declare -F "$action" >/dev/null 2>&1; then |
271 |
echo "Unknown command: $orig_action" >&2 |
272 |
exit 1 |
273 |
fi |
274 |
|
275 |
# Call handler function |
276 |
$action "$@" |