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"
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 ############################################################
85 # If the given variable isn't set then do nothing
87 # If a required value for the variable and it doesn't match,
89 [ -z "$3" -o "$3" = "$2" ] || return
96 # For these options we're only passing a value-less flag.
102 CTDB_OPTIONS="${CTDB_OPTIONS}${CTDB_OPTIONS:+ }${1}${sep}${val}"
105 if [ -z "$CTDB_RECOVERY_LOCK" ] ; then
106 echo "No recovery lock specified. Starting CTDB without split brain preventivon"
108 maybe_set "--reclock" "$CTDB_RECOVERY_LOCK"
110 maybe_set "--pidfile" "$pidfile"
112 # build up CTDB_OPTIONS variable from optional parameters
113 maybe_set "--logfile" "$CTDB_LOGFILE"
114 maybe_set "--nlist" "$CTDB_NODES"
115 maybe_set "--socket" "$CTDB_SOCKET"
116 maybe_set "--public-addresses" "$CTDB_PUBLIC_ADDRESSES"
117 maybe_set "--public-interface" "$CTDB_PUBLIC_INTERFACE"
118 maybe_set "--dbdir" "$CTDB_DBDIR"
119 maybe_set "--dbdir-persistent" "$CTDB_DBDIR_PERSISTENT"
120 maybe_set "--event-script-dir" "$CTDB_EVENT_SCRIPT_DIR"
121 maybe_set "--transport" "$CTDB_TRANSPORT"
122 maybe_set "-d" "$CTDB_DEBUGLEVEL"
123 maybe_set "--notification-script" "$CTDB_NOTIFY_SCRIPT"
124 maybe_set "--start-as-disabled" "$CTDB_START_AS_DISABLED" "yes"
125 maybe_set "--start-as-stopped " "$CTDB_START_AS_STOPPED" "yes"
126 maybe_set "--no-recmaster" "$CTDB_CAPABILITY_RECMASTER" "no"
127 maybe_set "--no-lmaster" "$CTDB_CAPABILITY_LMASTER" "no"
128 maybe_set "--lvs --single-public-ip" "$CTDB_LVS_PUBLIC_IP"
129 maybe_set "--script-log-level" "$CTDB_SCRIPT_LOG_LEVEL"
130 maybe_set "--log-ringbuf-size" "$CTDB_LOG_RINGBUF_SIZE"
131 maybe_set "--syslog" "$CTDB_SYSLOG" "yes"
132 maybe_set "--max-persistent-check-errors" "$CTDB_MAX_PERSISTENT_CHECK_ERRORS"
135 export_debug_variables ()
137 export CTDB_DEBUG_HUNG_SCRIPT CTDB_EXTERNAL_TRACE CTDB_DEBUG_LOCKS
144 if [ -n "$_session" ] ; then
145 pkill -9 -s "$_session" 2>/dev/null
150 ############################################################
154 if _session=$(ctdbd_is_running) ; then
155 echo $"CTDB is already running"
159 # About to start new $ctdbd. The main daemon is not running but
160 # there may still be other processes around, so do some cleanup.
161 # Note that starting ctdbd below will destroy the Unix domain
162 # socket, so any processes that aren't yet completely useless soon
163 # will be, so this can really do no harm.
164 kill_ctdbd "$_session"
168 export_debug_variables
170 if [ "$CTDB_SUPPRESS_COREFILE" = "yes" ]; then
176 mkdir -p $(dirname "$pidfile")
178 if [ -n "$CTDB_VALGRIND" -a "$CTDB_VALGRIND" != "no" ] ; then
179 if [ "$CTDB_VALGRIND" = "yes" ] ; then
180 ctdbd="valgrind -q --log-file=/var/log/ctdb_valgrind ${ctdbd}"
182 ctdbd="${CTDB_VALGRIND} ${ctdbd}"
184 CTDB_OPTIONS="${CTDB_OPTIONS} --valgrinding"
187 # This is ugly but will improve when we get rid of $CTDB_OPTIONS
188 # and use only $CTDB_SYSLOG.
189 case "$CTDB_OPTIONS" in
192 logger -t ctdbd "CTDB is being run without syslog enabled. Logs will be in ${CTDB_LOGFILE:-/var/log/log.ctdb}"
195 eval "$ctdbd" "$CTDB_OPTIONS" || return 1
197 # Wait until ctdbd has started and is ready to respond to clients.
199 _timeout="${CTDB_STARTUP_TIMEOUT:-10}"
201 while [ $_count -lt $_timeout ] ; do
202 # If we don't have the PID then try to read it.
203 [ -n "$_pid" ] || read _pid 2>/dev/null <"$pidfile"
205 # If we got the PID but the PID file has gone or the process
206 # is no longer running then stop waiting... CTDB is dead.
207 if [ -n "$_pid" ] ; then
208 if [ ! -e "$pidfile" ] || ! kill -0 "$_pid" 2>/dev/null ; then
209 echo "CTDB exited during initialisation - check logs."
211 drop_all_public_ips >/dev/null 2>&1
215 if ctdb runstate first_recovery startup running >/dev/null 2>&1 ; then
220 _count=$(($_count + 1))
224 echo "Timed out waiting for initialisation - check logs - killing CTDB"
226 drop_all_public_ips >/dev/null 2>&1
232 if ! _session=$(ctdbd_is_running) ; then
233 echo "CTDB is not running"
239 # Wait for remaining CTDB processes to exit...
240 _timeout=${CTDB_SHUTDOWN_TIMEOUT:-30}
242 while [ $_count -lt $_timeout ] ; do
243 pkill -0 -s "$_session" 2>/dev/null || return 0
245 _count=$(($_count + 1))
249 echo "Timed out waiting for CTDB to shutdown. Killing CTDB processes."
250 kill_ctdbd "$_session"
251 drop_all_public_ips >/dev/null 2>&1
255 if pkill -0 -s "$_session" ; then
256 # If SIGKILL didn't work then things are bad...
257 echo "Failed to kill all CTDB processes. Giving up."
264 ############################################################
266 # Allow notifications for start/stop.
267 if [ -x "$CTDB_BASE/rc.ctdb" ] ; then
268 "$CTDB_BASE/rc.ctdb" "$action"
275 echo "usage: $0 {start|stop}"