3 # ctdbd wrapper - start or stop CTDB
7 echo "usage: ctdbd_wrapper <pidfile> { start | stop }"
16 ############################################################
18 [ -n "$CTDB_BASE" ] ||
export CTDB_BASE
="/etc/ctdb"
20 .
"${CTDB_BASE}/functions"
23 [ -n "$CTDB_SOCKET" ] && export CTDB_SOCKET
25 ctdbd
="${CTDBD:-/usr/sbin/ctdbd}"
27 ############################################################
31 # 1. Check if ctdbd is running.
32 # - If the PID file is being used then, if the PID file is present,
33 # ctdbd is only considered to running if the PID in the file is
35 # - If the PID file is not being used (i.e. we're upgrading from a
36 # version that doesn't support it) then the presence of any ctdbd
37 # processes is enough proof.
39 # 2. Print a comma-separated list of PIDs that can be
40 # used with "pkill -s".
41 # - If the PID file is being used then this is just the PID in that
42 # file. This also happens to be the session ID, so can be used
43 # to kill all CTDB processes.
44 # - If the PID file is not being used (i.e. upgrading) then this is
45 # just any ctdbd processes that are running. Hopefully one of
46 # them is the session ID so that it can be used to kill all CTDB
49 # Combining these 2 checks is an optimisation to avoid potentially
50 # running too many pgrep/pkill processes on an already loaded system.
51 # Trawling through /proc/ can be very expensive.
55 # If the directory for the PID file exists then respect the
56 # existence of a PID file.
57 _pidfile_dir
=$
(dirname "$pidfile")
58 if [ -d "$_pidfile_dir" ] ; then
59 if read _pid
2>/dev
/null
<"$pidfile" ; then
62 # Return value of kill is used
63 kill -0 $_pid 2>/dev
/null
65 # Missing/empty PID file
69 if _pid
=$
(pgrep
-f "${ctdbd}\>") ; then
70 echo $_pid |
sed -e 's@ @,@g'
78 ############################################################
86 # If the given variable isn't set then do nothing
88 # If a required value for the variable and it doesn't match,
90 [ -z "$3" -o "$3" = "$2" ] ||
return
97 # For these options we're only passing a value-less flag.
103 ctdb_options
="${ctdb_options}${ctdb_options:+ }${1}${sep}${val}"
106 if [ -z "$CTDB_RECOVERY_LOCK" ] ; then
107 echo "No recovery lock specified. Starting CTDB without split brain prevention."
109 maybe_set
"--reclock" "$CTDB_RECOVERY_LOCK"
111 maybe_set
"--pidfile" "$pidfile"
113 # build up ctdb_options variable from optional parameters
114 maybe_set
"--logging" "$CTDB_LOGGING"
115 maybe_set
"--nlist" "$CTDB_NODES"
116 maybe_set
"--socket" "$CTDB_SOCKET"
117 maybe_set
"--public-addresses" "$CTDB_PUBLIC_ADDRESSES"
118 maybe_set
"--public-interface" "$CTDB_PUBLIC_INTERFACE"
119 maybe_set
"--dbdir" "$CTDB_DBDIR"
120 maybe_set
"--dbdir-persistent" "$CTDB_DBDIR_PERSISTENT"
121 maybe_set
"--dbdir-state" "$CTDB_DBDIR_STATE"
122 maybe_set
"--event-script-dir" "$CTDB_EVENT_SCRIPT_DIR"
123 maybe_set
"--transport" "$CTDB_TRANSPORT"
124 maybe_set
"-d" "$CTDB_DEBUGLEVEL"
125 maybe_set
"--notification-script" "$CTDB_NOTIFY_SCRIPT"
126 maybe_set
"--start-as-disabled" "$CTDB_START_AS_DISABLED" "yes"
127 maybe_set
"--start-as-stopped " "$CTDB_START_AS_STOPPED" "yes"
128 maybe_set
"--no-recmaster" "$CTDB_CAPABILITY_RECMASTER" "no"
129 maybe_set
"--no-lmaster" "$CTDB_CAPABILITY_LMASTER" "no"
130 maybe_set
"--lvs --single-public-ip" "$CTDB_LVS_PUBLIC_IP"
131 maybe_set
"--script-log-level" "$CTDB_SCRIPT_LOG_LEVEL"
132 maybe_set
"--max-persistent-check-errors" "$CTDB_MAX_PERSISTENT_CHECK_ERRORS"
135 export_debug_variables
()
137 [ -n "$CTDB_DEBUG_HUNG_SCRIPT" ] && export CTDB_DEBUG_HUNG_SCRIPT
138 [ -n "$CTDB_EXTERNAL_TRACE" ] && export CTDB_EXTERNAL_TRACE
139 [ -n "$CTDB_DEBUG_LOCKS" ] && export CTDB_DEBUG_LOCKS
146 if [ -n "$_session" ] ; then
147 pkill
-9 -s "$_session" 2>/dev
/null
152 ############################################################
156 if _session
=$
(ctdbd_is_running
) ; then
157 echo $
"CTDB is already running"
161 # About to start new $ctdbd. The main daemon is not running but
162 # there may still be other processes around, so do some cleanup.
163 # Note that starting ctdbd below will destroy the Unix domain
164 # socket, so any processes that aren't yet completely useless soon
165 # will be, so this can really do no harm.
166 kill_ctdbd
"$_session"
170 export_debug_variables
172 if [ "$CTDB_SUPPRESS_COREFILE" = "yes" ]; then
178 mkdir
-p $
(dirname "$pidfile")
180 if [ -n "$CTDB_VALGRIND" -a "$CTDB_VALGRIND" != "no" ] ; then
181 if [ "$CTDB_VALGRIND" = "yes" ] ; then
182 ctdbd
="valgrind -q --log-file=/var/log/ctdb_valgrind ${ctdbd}"
184 ctdbd
="${CTDB_VALGRIND} ${ctdbd}"
186 ctdb_options
="${ctdb_options} --valgrinding"
189 case "$CTDB_LOGGING" in
190 syslog
:udp|syslog
:udp-rfc5424
)
191 logger
-t ctdbd
"CTDB is being run with ${CTDB_LOGGING}. If nothing is logged then check your syslogd configuration"
193 syslog|syslog
:*) : ;;
195 logger
-t ctdbd
"CTDB is being run without syslog enabled. Logs will be in ${CTDB_LOGGING#file:}"
198 logger
-t ctdbd
"CTDB is being run without syslog enabled. Logs will be in log.ctdb"
201 eval "$ctdbd" "$ctdb_options" ||
return 1
203 # Wait until ctdbd has started and is ready to respond to clients.
205 _timeout
="${CTDB_STARTUP_TIMEOUT:-10}"
207 while [ $_count -lt $_timeout ] ; do
208 # If we don't have the PID then try to read it.
209 [ -n "$_pid" ] ||
read _pid
2>/dev
/null
<"$pidfile"
211 # If we got the PID but the PID file has gone or the process
212 # is no longer running then stop waiting... CTDB is dead.
213 if [ -n "$_pid" ] ; then
214 if [ ! -e "$pidfile" ] ||
! kill -0 "$_pid" 2>/dev
/null
; then
215 echo "CTDB exited during initialisation - check logs."
217 drop_all_public_ips
>/dev
/null
2>&1
221 if ctdb runstate first_recovery startup running
>/dev
/null
2>&1 ; then
226 _count
=$
(($_count + 1))
230 echo "Timed out waiting for initialisation - check logs - killing CTDB"
232 drop_all_public_ips
>/dev
/null
2>&1
238 if ! _session
=$
(ctdbd_is_running
) ; then
239 echo "CTDB is not running"
245 # Wait for remaining CTDB processes to exit...
246 _timeout
=${CTDB_SHUTDOWN_TIMEOUT:-30}
248 while [ $_count -lt $_timeout ] ; do
249 pkill
-0 -s "$_session" 2>/dev
/null ||
return 0
251 _count
=$
(($_count + 1))
255 echo "Timed out waiting for CTDB to shutdown. Killing CTDB processes."
256 kill_ctdbd
"$_session"
257 drop_all_public_ips
>/dev
/null
2>&1
261 if pkill
-0 -s "$_session" ; then
262 # If SIGKILL didn't work then things are bad...
263 echo "Failed to kill all CTDB processes. Giving up."
270 ############################################################
272 # Allow notifications for start/stop.
273 if [ -x "$CTDB_BASE/rc.ctdb" ] ; then
274 "$CTDB_BASE/rc.ctdb" "$action"
281 echo "usage: $0 {start|stop}"