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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
#!/bin/bash
### BEGIN INIT INFO
# Provides: influxd
# Required-Start: $all
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start the InfluxDB process
### END INIT INFO
set -x
# If you modify this, please make sure to also edit influxdb.service
# Command-line options that can be set in /etc/default/influxdb. These will override
# any config file values.
DEFAULT=/etc/default/influxdb
# Daemon options
INFLUXD_OPTS=
# Process name ( For display )
NAME=influxdb
# User and group
USER=influxdb
GROUP=influxdb
# Check for sudo or root privileges before continuing
if [ "$UID" != "0" ]; then
echo "You must be root to run this script"
exit 1
fi
# Daemon name, where is the actual executable If the daemon is not
# there, then exit.
DAEMON=/usr/bin/influxd
if [ ! -x $DAEMON ]; then
echo "Executable $DAEMON does not exist!"
exit 5
fi
# Configuration file
CONFIG=/etc/influxdb/influxdb.conf
# PID file for the daemon
PIDFILE=/var/run/influxdb/influxd.pid
PIDDIR=`dirname $PIDFILE`
if [ ! -d "$PIDDIR" ]; then
mkdir -p $PIDDIR
chown $USER:$GROUP $PIDDIR
fi
# Max open files
OPEN_FILE_LIMIT=65536
if [ -r /lib/lsb/init-functions ]; then
source /lib/lsb/init-functions
fi
# Logging
if [ -z "$STDOUT" ]; then
STDOUT=/var/log/influxdb/influxd.log
fi
if [ ! -f "$STDOUT" ]; then
mkdir -p $(dirname $STDOUT)
fi
if [ -z "$STDERR" ]; then
STDERR=/var/log/influxdb/influxd.log
fi
if [ ! -f "$STDERR" ]; then
mkdir -p $(dirname $STDERR)
fi
# Override init script variables with DEFAULT values
if [ -r $DEFAULT ]; then
source $DEFAULT
fi
function log_failure_msg() {
echo "$@" "[ FAILED ]"
}
function log_success_msg() {
echo "$@" "[ OK ]"
}
function start() {
# Check if config file exist
if [ ! -r $CONFIG ]; then
log_failure_msg "config file $CONFIG doesn't exist (or you don't have permission to view)"
exit 4
fi
# Check that the PID file exists, and check the actual status of process
if [ -f $PIDFILE ]; then
PID="$(cat $PIDFILE)"
if kill -0 "$PID" &>/dev/null; then
# Process is already up
log_success_msg "$NAME process is already running"
return 0
fi
else
su -s /bin/sh -c "touch $PIDFILE" $USER &>/dev/null
if [ $? -ne 0 ]; then
log_failure_msg "$PIDFILE not writable, check permissions"
exit 5
fi
fi
# Bump the file limits, before launching the daemon. These will
# carry over to launched processes.
ulimit -n $OPEN_FILE_LIMIT
if [ $? -ne 0 ]; then
log_failure_msg "Unable to set ulimit to $OPEN_FILE_LIMIT"
exit 1
fi
# Launch process
echo "Starting $NAME..."
if command -v start-stop-daemon &>/dev/null; then
start-stop-daemon \
--background \
--chuid $USER:$GROUP \
--start \
--quiet \
--pidfile $PIDFILE \
--exec $DAEMON \
-- \
-config $CONFIG \
$INFLUXD_OPTS >>$STDOUT 2>>$STDERR
else
local CMD="$DAEMON -config $CONFIG $INFLUXD_OPTS >>$STDOUT 2>>$STDERR &"
su -s /bin/sh -c "$CMD" $USER
fi
# Sleep to verify process is still up
sleep 1
echo $(pidof influxd) > $PIDFILE
if [ -f $PIDFILE ]; then
# PIDFILE exists
PID="$(cat $PIDFILE)"
if kill -0 "$PID" &>/dev/null; then
# PID up, service running
log_success_msg "$NAME process was started"
return 0
fi
fi
log_failure_msg "$NAME process was unable to start"
exit 1
}
function stop() {
# Stop the daemon.
if [ -f $PIDFILE ]; then
local PID="$(cat $PIDFILE)"
if kill -0 $PID &>/dev/null; then
echo "Stopping $NAME..."
# Process still up, send SIGTERM and remove PIDFILE
kill -s TERM $PID &>/dev/null && rm -f "$PIDFILE" &>/dev/null
n=0
while true; do
# Enter loop to ensure process is stopped
kill -0 $PID &>/dev/null
if [ "$?" != "0" ]; then
# Process stopped, break from loop
log_success_msg "$NAME process was stopped"
return 0
fi
# Process still up after signal, sleep and wait
sleep 1
n=$(expr $n + 1)
if [ $n -eq 30 ]; then
# After 30 seconds, send SIGKILL
echo "Timeout exceeded, sending SIGKILL..."
kill -s KILL $PID &>/dev/null
elif [ $? -eq 40 ]; then
# After 40 seconds, error out
log_failure_msg "could not stop $NAME process"
exit 1
fi
done
fi
fi
log_success_msg "$NAME process already stopped"
}
function restart() {
# Restart the daemon.
stop
start
}
function status() {
# Check the status of the process.
if [ -f $PIDFILE ]; then
PID="$(cat $PIDFILE)"
if kill -0 $PID &>/dev/null; then
log_success_msg "$NAME process is running"
exit 0
fi
fi
log_failure_msg "$NAME process is not running"
exit 1
}
case $1 in
start)
start
;;
stop)
stop
;;
restart)
restart
;;
status)
status
;;
version)
$DAEMON version
;;
*)
# For invalid arguments, print the usage message.
echo "Usage: $0 {start|stop|restart|status|version}"
exit 2
;;
esac
|
