1 # Hey Emacs, this is a -*- shell-script -*- !!!
3 # utility functions for ctdb event scripts
5 [ -z "$CTDB_VARDIR" ] && {
6 if [ -d "/var/lib/ctdb" ] ; then
7 export CTDB_VARDIR="/var/lib/ctdb"
9 export CTDB_VARDIR="/var/ctdb"
12 [ -z "$CTDB_ETCDIR" ] && {
13 export CTDB_ETCDIR="/etc"
16 #######################################
17 # pull in a system config file, if any
21 foo="${service_config:-${service_name}}"
22 if [ -n "$foo" ] ; then
28 if [ "$1" != "ctdb" ] ; then
36 if [ -f $CTDB_ETCDIR/sysconfig/$1 ]; then
37 . $CTDB_ETCDIR/sysconfig/$1
38 elif [ -f $CTDB_ETCDIR/default/$1 ]; then
39 . $CTDB_ETCDIR/default/$1
40 elif [ -f $CTDB_BASE/sysconfig/$1 ]; then
41 . $CTDB_BASE/sysconfig/$1
44 if [ "$1" = "ctdb" ] ; then
45 _config="${CTDB_BASE}/ctdbd.conf"
46 if [ -r "$_config" ] ; then
56 ##############################################################
58 # CTDB_SCRIPT_DEBUGLEVEL can be overwritten by setting it in a
62 if [ ${CTDB_SCRIPT_DEBUGLEVEL:-2} -ge 4 ] ; then
63 # If there are arguments then echo them. Otherwise expect to
64 # use stdin, which allows us to pass lots of debug using a
83 # Log given message or stdin to either syslog or a CTDB log file
84 # $1 is the tag passed to logger if syslog is in use.
89 case "$CTDB_LOGGING" in
91 if [ -n "$CTDB_LOGGING" ] ; then
92 _file="${CTDB_LOGGING#file:}"
94 _file="/var/log/log.ctdb"
105 # Handle all syslog:* variants here too. There's no tool to do
106 # the lossy things, so just use logger.
107 logger -t "ctdbd: ${_tag}" $*
112 # When things are run in the background in an eventscript then logging
113 # output might get lost. This is the "solution". :-)
114 background_with_logging ()
117 "$@" 2>&1 </dev/null |
118 script_log "${script_name}&"
124 ##############################################################
125 # check number of args for different events
131 echo "ERROR: must supply interface, IP and maskbits"
137 echo "ERROR: must supply old interface, new interface, IP and maskbits"
144 ##############################################################
145 # determine on what type of system (init style) we are running
148 # only do detection if not already set:
149 [ -z "$CTDB_INIT_STYLE" ] || return
151 if [ -x /sbin/startproc ]; then
152 CTDB_INIT_STYLE="suse"
153 elif [ -x /sbin/start-stop-daemon ]; then
154 CTDB_INIT_STYLE="debian"
156 CTDB_INIT_STYLE="redhat"
160 ######################################################
161 # simulate /sbin/service on platforms that don't have it
162 # _service() makes it easier to hook the service() function for
169 # do nothing, when no service was specified
170 [ -z "$_service_name" ] && return
172 if [ -x /sbin/service ]; then
173 $_nice /sbin/service "$_service_name" "$_op"
174 elif [ -x /usr/sbin/service ]; then
175 $_nice /usr/sbin/service "$_service_name" "$_op"
176 elif [ -x $CTDB_ETCDIR/init.d/$_service_name ]; then
177 $_nice $CTDB_ETCDIR/init.d/$_service_name "$_op"
178 elif [ -x $CTDB_ETCDIR/rc.d/init.d/$_service_name ]; then
179 $_nice $CTDB_ETCDIR/rc.d/init.d/$_service_name "$_op"
189 ######################################################
190 # simulate /sbin/service (niced) on platforms that don't have it
197 ######################################################
198 # wrapper around /proc/ settings to allow them to be hooked
200 # 1st arg is relative path under /proc/, 2nd arg is value to set
203 echo "$2" >"/proc/$1"
206 ######################################################
207 # wrapper around getting file contents from /proc/ to allow
208 # this to be hooked for testing
209 # 1st arg is relative path under /proc/
215 ######################################################
216 # Print up to $_max kernel stack traces for processes named $_program
217 program_stack_traces ()
223 for _pid in $(pidof "$_prog") ; do
224 [ $_count -le $_max ] || break
226 # Do this first to avoid racing with process exit
227 _stack=$(get_proc "${_pid}/stack" 2>/dev/null)
228 if [ -n "$_stack" ] ; then
229 echo "Stack trace for ${_prog}[${_pid}]:"
231 _count=$(($_count + 1))
236 ######################################################
237 # Check that an RPC service is healthy -
238 # this includes allowing a certain number of failures
239 # before marking the NFS service unhealthy.
241 # usage: nfs_check_rpc_service SERVICE_NAME [ triple ...]
243 # each triple is a set of 3 arguments: an operator, a
244 # fail count limit and an action string.
248 # nfs_check_rpc_service "lockd" \
249 # -ge 15 "verbose restart unhealthy" \
250 # -eq 10 "restart:bs"
252 # says that if lockd is down for 15 iterations then do
253 # a verbose restart of lockd and mark the node unhealthy.
254 # Before this, after 10 iterations of failure, the
255 # service is restarted silently in the background.
256 # Order is important: the number of failures need to be
257 # specified in reverse order because processing stops
258 # after the first condition that is true.
259 ######################################################
260 nfs_check_rpc_service ()
262 _prog_name="$1" ; shift
264 if _nfs_check_rpc_common "$_prog_name" ; then
268 while [ -n "$3" ] ; do
269 if _nfs_check_rpc_action "$1" "$2" "$3" ; then
276 # The new way of doing things...
277 nfs_check_rpc_services ()
279 # Files must end with .check - avoids editor backups, RPM fu, ...
280 for _f in "${CTDB_BASE}/nfs-rpc-checks.d/"[0-9][0-9].*.check ; do
282 _prog_name="${_t##*/[0-9][0-9].}"
284 if _nfs_check_rpc_common "$_prog_name" ; then
285 # This RPC service is up, check next service...
289 # Check each line in the file in turn until one of the limit
291 while read _cmp _lim _rest ; do
297 if _nfs_check_rpc_action "$_cmp" "$_lim" "$_rest" ; then
298 # Limit was hit on this line, no further checking...
305 _nfs_check_rpc_common ()
309 # Some platforms don't have separate programs for all services.
310 case "$_prog_name" in
312 which "rpc.${_prog_name}" >/dev/null 2>&1 || return 0
315 case "$_prog_name" in
337 echo "Internal error: unknown RPC program \"$_prog_name\"."
341 _service_name="nfs_${_prog_name}"
343 if ctdb_check_rpc "$_rpc_prog" $_version >/dev/null ; then
344 ctdb_counter_init "$_service_name"
348 ctdb_counter_incr "$_service_name"
353 _nfs_check_rpc_action ()
359 if ctdb_check_counter "quiet" "$_cmp" "$_limit" "$_service_name" ; then
363 for _action in $_actions ; do
366 echo "$ctdb_check_rpc_out"
369 _nfs_restart_rpc_service "$_prog_name"
372 _nfs_restart_rpc_service "$_prog_name" true
378 echo "Internal error: unknown action \"$_action\"."
386 _nfs_restart_rpc_service ()
389 _background="${2:-false}"
391 if $_background ; then
392 _maybe_background="background_with_logging"
397 _p="rpc.${_prog_name}"
399 case "$_prog_name" in
401 echo "Trying to restart NFS service"
402 $_maybe_background startstop_nfs restart
405 echo "Trying to restart $_prog_name [${_p}]"
407 nfs_dump_some_threads "$_p"
408 $_maybe_background $_p ${MOUNTD_PORT:+-p} $MOUNTD_PORT
411 echo "Trying to restart $_prog_name [${_p}]"
413 nfs_dump_some_threads "$_p"
414 $_maybe_background $_p ${RQUOTAD_PORT:+-p} $RQUOTAD_PORT
417 echo "Trying to restart lock manager service"
418 $_maybe_background startstop_nfslock restart
421 echo "Trying to restart $_prog_name [${_p}]"
423 nfs_dump_some_threads "$_p"
424 $_maybe_background $_p \
425 ${STATD_HOSTNAME:+-n} $STATD_HOSTNAME \
426 ${STATD_PORT:+-p} $STATD_PORT \
427 ${STATD_OUTGOING_PORT:+-o} $STATD_OUTGOING_PORT
430 echo "Internal error: unknown RPC program \"$_prog_name\"."
435 ######################################################
436 # check that a rpc server is registered with portmap
437 # and responding to requests
438 # usage: ctdb_check_rpc SERVICE_NAME VERSION
439 ######################################################
445 _localhost="${CTDB_RPCINFO_LOCALHOST:-127.0.0.1}"
447 if ! ctdb_check_rpc_out=$(rpcinfo -u $_localhost $progname $version 2>&1) ; then
448 ctdb_check_rpc_out="ERROR: $progname failed RPC check:
450 echo "$ctdb_check_rpc_out"
455 ######################################################
456 # Ensure $service_name is set
457 assert_service_name ()
459 [ -n "$service_name" ] || die "INTERNAL ERROR: \$service_name not set"
462 ######################################################
463 # check a set of directories is available
464 # return 1 on a missing directory
465 # directories are read from stdin
466 ######################################################
467 ctdb_check_directories_probe()
469 while IFS="" read d ; do
475 [ -d "${d}/." ] || return 1
480 ######################################################
481 # check a set of directories is available
482 # directories are read from stdin
483 ######################################################
484 ctdb_check_directories()
486 ctdb_check_directories_probe || {
487 echo "ERROR: $service_name directory \"$d\" not available"
492 ######################################################
493 # check a set of tcp ports
494 # usage: ctdb_check_tcp_ports <ports...>
495 ######################################################
497 # This flag file is created when a service is initially started. It
498 # is deleted the first time TCP port checks for that service succeed.
499 # Until then ctdb_check_tcp_ports() prints a more subtle "error"
500 # message if a port check fails.
501 _ctdb_check_tcp_common ()
504 _ctdb_service_started_file="$ctdb_fail_dir/$service_name.started"
507 ctdb_check_tcp_init ()
509 _ctdb_check_tcp_common
510 mkdir -p "${_ctdb_service_started_file%/*}" # dirname
511 touch "$_ctdb_service_started_file"
514 # Check whether something is listening on all of the given TCP ports
515 # using the "ctdb checktcpport" command.
516 ctdb_check_tcp_ports()
518 if [ -z "$1" ] ; then
519 echo "INTERNAL ERROR: ctdb_check_tcp_ports - no ports specified"
523 for _p ; do # process each function argument (port)
524 _cmd="ctdb checktcpport $_p"
529 _ctdb_check_tcp_common
530 if [ ! -f "$_ctdb_service_started_file" ] ; then
531 echo "ERROR: $service_name tcp port $_p is not responding"
532 debug "\"ctdb checktcpport $_p\" was able to bind to port"
534 echo "INFO: $service_name tcp port $_p is not responding"
540 # Couldn't bind, something already listening, next port...
544 echo "ERROR: unexpected error running \"ctdb checktcpport\""
546 ctdb checktcpport (exited with $_ret) with output:
553 # All ports listening
554 _ctdb_check_tcp_common
555 rm -f "$_ctdb_service_started_file"
559 ######################################################
560 # check a unix socket
561 # usage: ctdb_check_unix_socket SERVICE_NAME <socket_path>
562 ######################################################
563 ctdb_check_unix_socket() {
565 [ -z "$socket_path" ] && return
567 if ! netstat --unix -a -n | grep -q "^unix.*LISTEN.*${socket_path}$"; then
568 echo "ERROR: $service_name socket $socket_path not found"
573 ######################################################
574 # check a command returns zero status
575 # usage: ctdb_check_command <command>
576 ######################################################
577 ctdb_check_command ()
579 _out=$("$@" 2>&1) || {
580 echo "ERROR: $* returned error"
586 ################################################
587 # kill off any TCP connections with the given IP
588 ################################################
589 kill_tcp_connections ()
594 if [ "$2" = "oneway" ] ; then
598 get_tcp_connections_for_ip "$_ip" | {
603 while read _dst _src; do
604 _destport="${_dst##*:}"
607 # we only do one-way killtcp for CIFS
608 139|445) __oneway=true ;;
611 echo "Killing TCP connection $_src $_dst"
612 _connections="${_connections}${_nl}${_src} ${_dst}"
613 if ! $__oneway ; then
614 _connections="${_connections}${_nl}${_dst} ${_src}"
617 _killcount=$(($_killcount + 1))
620 if [ $_killcount -eq 0 ] ; then
624 echo "$_connections" | ctdb killtcp || {
625 echo "Failed to send killtcp control"
631 _remaining=$(get_tcp_connections_for_ip $_ip | wc -l)
633 if [ $_remaining -eq 0 ] ; then
634 echo "Killed $_killcount TCP connections to released IP $_ip"
638 _count=$(($_count + 1))
639 if [ $_count -gt 3 ] ; then
640 echo "Timed out killing tcp connections for IP $_ip ($_remaining remaining)"
644 echo "Waiting for $_remaining connections to be killed for IP $_ip"
650 ##################################################################
651 # kill off the local end for any TCP connections with the given IP
652 ##################################################################
653 kill_tcp_connections_local_only ()
655 kill_tcp_connections "$1" "oneway"
658 ##################################################################
659 # tickle any TCP connections with the given IP
660 ##################################################################
661 tickle_tcp_connections ()
665 get_tcp_connections_for_ip "$_ip" |
669 while read dest src; do
670 echo "Tickle TCP connection $src $dest"
671 ctdb tickle $src $dest >/dev/null 2>&1 || _failed=true
672 echo "Tickle TCP connection $dest $src"
673 ctdb tickle $dest $src >/dev/null 2>&1 || _failed=true
677 echo "Failed to send tickle control"
682 get_tcp_connections_for_ip ()
686 netstat -tn | awk -v ip=$_ip \
687 'index($1, "tcp") == 1 && \
688 (index($4, ip ":") == 1 || index($4, "::ffff:" ip ":") == 1) \
689 && $6 == "ESTABLISHED" \
693 ##################################################################
694 # use statd-callout to update NFS lock info
695 ##################################################################
696 nfs_update_lock_info ()
698 if [ -x "$CTDB_BASE/statd-callout" ] ; then
699 "$CTDB_BASE/statd-callout" update
703 ########################################################
704 # start/stop the Ganesha nfs service
705 ########################################################
708 _service_name="nfs-ganesha-$CTDB_CLUSTER_FILESYSTEM_TYPE"
711 service "$_service_name" start
714 service "$_service_name" stop
717 service "$_service_name" stop
718 nfs_dump_some_threads "rpc.statd"
719 service "$_service_name" start
724 ########################################################
725 # start/stop the nfs service on different platforms
726 ########################################################
729 [ -x $CTDB_ETCDIR/init.d/nfsserver ] && {
732 [ -x $CTDB_ETCDIR/init.d/nfslock -o \
733 -r /usr/lib/systemd/system/nfs-lock.service ] && {
741 service nfsserver start
744 service nfsserver stop > /dev/null 2>&1
747 set_proc "fs/nfsd/threads" 0
748 service nfsserver stop > /dev/null 2>&1
750 nfs_dump_some_threads
751 service nfsserver start
758 service nfslock start
766 set_proc "fs/nfsd/threads" 0
767 service nfs stop > /dev/null 2>&1
768 service nfslock stop > /dev/null 2>&1
770 nfs_dump_some_threads
771 service nfslock start
777 echo "Unknown platform. NFS is not supported with ctdb"
783 # Dump up to the configured number of nfsd thread backtraces.
784 nfs_dump_some_threads ()
788 _num="${CTDB_NFS_DUMP_STUCK_THREADS:-5}"
789 [ $_num -gt 0 ] || return 0
791 program_stack_traces "$_prog" $_num
794 ########################################################
795 # start/stop the nfs lockmanager service on different platforms
796 ########################################################
797 startstop_nfslock() {
799 [ -x $CTDB_ETCDIR/init.d/nfsserver ] && {
802 [ -x $CTDB_ETCDIR/init.d/nfslock -o \
803 -r /usr/lib/systemd/system/nfs-lock.service ] && {
809 # for sles there is no service for lockmanager
810 # so we instead just shutdown/restart nfs
813 service nfsserver start
816 service nfsserver stop > /dev/null 2>&1
819 service nfsserver stop > /dev/null 2>&1
820 service nfsserver start
827 service nfslock start
830 service nfslock stop > /dev/null 2>&1
833 service nfslock stop > /dev/null 2>&1
834 service nfslock start
839 echo "Unknown platform. NFS locking is not supported with ctdb"
845 ########################################################
853 # Ensure interface is up
854 ip link set "$_iface" up || \
855 die "Failed to bringup interface $_iface"
857 # Only need to define broadcast for IPv4
863 ip addr add "$_ip/$_maskbits" $_bcast dev "$_iface" || {
864 echo "Failed to add $_ip/$_maskbits on dev $_iface"
868 # Wait 5 seconds for IPv6 addresses to stop being tentative...
869 if [ -z "$_bcast" ] ; then
870 for _x in $(seq 1 10) ; do
871 ip addr show to "${_ip}/128" | grep -q "tentative" || break
875 # If the address was a duplicate then it won't be on the
876 # interface so flag an error.
877 _t=$(ip addr show to "${_ip}/128")
880 echo "Failed to add $_ip/$_maskbits on dev $_iface"
883 *tentative*|*dadfailed*)
884 echo "Failed to add $_ip/$_maskbits on dev $_iface"
885 ip addr del "$_ip/$_maskbits" dev "$_iface"
892 delete_ip_from_iface()
898 # This could be set globally for all interfaces but it is probably
899 # better to avoid surprises, so limit it the interfaces where CTDB
900 # has public IP addresses. There isn't anywhere else convenient
901 # to do this so just set it each time. This is much cheaper than
902 # remembering and re-adding secondaries.
903 set_proc "sys/net/ipv4/conf/${_iface}/promote_secondaries" 1
905 ip addr del "$_ip/$_maskbits" dev "$_iface" || {
906 echo "Failed to del $_ip on dev $_iface"
911 # If the given IP is hosted then print 2 items: maskbits and iface
917 *:*) _family="inet6" ; _bits=128 ;;
918 *) _family="inet" ; _bits=32 ;;
921 ip addr show to "${_addr}/${_bits}" 2>/dev/null | \
922 awk -v family="${_family}" \
923 'NR == 1 { iface = $2; sub(":$", "", iface) } \
924 $1 ~ /inet/ { mask = $2; sub(".*/", "", mask); \
925 print mask, iface, family }'
930 _addr="${1%/*}" # Remove optional maskbits
932 set -- $(ip_maskbits_iface $_addr)
933 if [ -n "$1" ] ; then
936 echo "Removing public address $_addr/$_maskbits from device $_iface"
937 delete_ip_from_iface $_iface $_addr $_maskbits >/dev/null 2>&1
941 drop_all_public_ips ()
943 while read _ip _x ; do
945 done <"${CTDB_PUBLIC_ADDRESSES:-/dev/null}"
950 set_proc sys/net/ipv4/route/flush 1
951 set_proc sys/net/ipv6/route/flush 1
954 ########################################################
956 _ctdb_counter_common () {
957 _service_name="${1:-${service_name:-${script_name}}}"
958 _counter_file="$ctdb_fail_dir/$_service_name"
959 mkdir -p "${_counter_file%/*}" # dirname
961 ctdb_counter_init () {
962 _ctdb_counter_common "$1"
966 ctdb_counter_incr () {
967 _ctdb_counter_common "$1"
970 echo -n 1 >> "$_counter_file"
972 ctdb_check_counter () {
973 _msg="${1:-error}" # "error" - anything else is silent on fail
974 _op="${2:--ge}" # an integer operator supported by test
975 _limit="${3:-${service_fail_limit}}"
977 _ctdb_counter_common "$1"
980 _size=$(stat -c "%s" "$_counter_file" 2>/dev/null || echo 0)
982 if [ "$_op" != "%" ] ; then
983 if [ $_size $_op $_limit ] ; then
987 if [ $(($_size $_op $_limit)) -eq 0 ] ; then
992 if [ "$_msg" = "error" ] ; then
993 echo "ERROR: $_size consecutive failures for $_service_name, marking node unhealthy"
1001 ########################################################
1003 ctdb_status_dir="$CTDB_VARDIR/state/service_status"
1004 ctdb_fail_dir="$CTDB_VARDIR/state/failcount"
1006 ctdb_setup_service_state_dir ()
1008 service_state_dir="$CTDB_VARDIR/state/service_state/${1:-${service_name}}"
1009 mkdir -p "$service_state_dir" || {
1010 echo "Error creating state dir \"$service_state_dir\""
1015 ########################################################
1016 # Managed status history, for auto-start/stop
1018 ctdb_managed_dir="$CTDB_VARDIR/state/managed_history"
1020 _ctdb_managed_common ()
1022 _ctdb_managed_file="$ctdb_managed_dir/$service_name"
1025 ctdb_service_managed ()
1027 _ctdb_managed_common
1028 mkdir -p "$ctdb_managed_dir"
1029 touch "$_ctdb_managed_file"
1032 ctdb_service_unmanaged ()
1034 _ctdb_managed_common
1035 rm -f "$_ctdb_managed_file"
1038 is_ctdb_previously_managed_service ()
1040 _ctdb_managed_common
1041 [ -f "$_ctdb_managed_file" ]
1044 ########################################################
1045 # Check and set status
1049 echo "node is \"$1\", \"${script_name}\" reports problem: $(cat $2)"
1054 if [ -r "$ctdb_status_dir/$script_name/unhealthy" ] ; then
1055 log_status_cat "unhealthy" "$ctdb_status_dir/$script_name/unhealthy"
1057 elif [ -r "$ctdb_status_dir/$script_name/banned" ] ; then
1058 log_status_cat "banned" "$ctdb_status_dir/$script_name/banned"
1067 d="$ctdb_status_dir/$script_name"
1074 for i in "banned" "unhealthy" ; do
1081 ##################################################################
1082 # Reconfigure a service on demand
1084 _ctdb_service_reconfigure_common ()
1086 _d="$ctdb_status_dir/${service_name}"
1088 _ctdb_service_reconfigure_flag="$_d/reconfigure"
1091 ctdb_service_needs_reconfigure ()
1093 _ctdb_service_reconfigure_common
1094 [ -e "$_ctdb_service_reconfigure_flag" ]
1097 ctdb_service_set_reconfigure ()
1099 _ctdb_service_reconfigure_common
1100 >"$_ctdb_service_reconfigure_flag"
1103 ctdb_service_unset_reconfigure ()
1105 _ctdb_service_reconfigure_common
1106 rm -f "$_ctdb_service_reconfigure_flag"
1109 ctdb_service_reconfigure ()
1111 echo "Reconfiguring service \"${service_name}\"..."
1112 ctdb_service_unset_reconfigure
1113 service_reconfigure || return $?
1117 # Default service_reconfigure() function does nothing.
1118 service_reconfigure ()
1123 ctdb_reconfigure_take_lock ()
1125 _ctdb_service_reconfigure_common
1126 _lock="${_d}/reconfigure_lock"
1127 mkdir -p "${_lock%/*}" # dirname
1132 # This is overkill but will work if we need to extend this to
1133 # allow certain events to run multiple times in parallel
1134 # (e.g. takeip) and write multiple PIDs to the file.
1136 if [ -n "$_locker_event" ] ; then
1137 while read _pid ; do
1138 if [ -n "$_pid" -a "$_pid" != $$ ] && \
1139 kill -0 "$_pid" 2>/dev/null ; then
1145 printf "%s\n%s\n" "$event_name" $$ >"$_lock"
1150 ctdb_reconfigure_release_lock ()
1152 _ctdb_service_reconfigure_common
1153 _lock="${_d}/reconfigure_lock"
1158 ctdb_replay_monitor_status ()
1160 echo "Replaying previous status for this script due to reconfigure..."
1161 # Leading separator ('|') is missing in some versions...
1162 _out=$(ctdb scriptstatus -X | grep -E "^\|?monitor\|${script_name}\|")
1163 # Output looks like this:
1164 # |monitor|60.nfs|1|ERROR|1314764004.030861|1314764004.035514|foo bar|
1165 # This is the cheapest way of getting fields in the middle.
1166 set -- $(IFS="|" ; echo $_out)
1169 # The error output field can include colons so we'll try to
1170 # preserve them. The weak checking at the beginning tries to make
1171 # this work for both broken (no leading '|') and fixed output.
1173 _err_out="${_out#*monitor|${script_name}|*|*|*|*|}"
1175 OK) : ;; # Do nothing special.
1177 # Recast this as an error, since we can't exit with the
1178 # correct negative number.
1180 _err_out="[Replay of TIMEDOUT scriptstatus - note incorrect return code.] ${_err_out}"
1183 # Recast this as an OK, since we can't exit with the
1184 # correct negative number.
1186 _err_out="[Replay of DISABLED scriptstatus - note incorrect return code.] ${_err_out}"
1188 *) : ;; # Must be ERROR, do nothing special.
1190 if [ -n "$_err_out" ] ; then
1196 ctdb_service_check_reconfigure ()
1200 # We only care about some events in this function. For others we
1202 case "$event_name" in
1203 monitor|ipreallocated|reconfigure) : ;;
1207 if ctdb_reconfigure_take_lock ; then
1208 # No events covered by this function are running, so proceed
1210 case "$event_name" in
1212 (ctdb_service_reconfigure)
1216 if ctdb_service_needs_reconfigure ; then
1217 ctdb_service_reconfigure
1222 ctdb_reconfigure_release_lock
1224 # Somebody else is running an event we don't want to collide
1225 # with. We proceed with caution.
1226 case "$event_name" in
1228 # Tell whoever called us to retry.
1232 # Defer any scheduled reconfigure and just run the
1233 # rest of the ipreallocated event, as per the
1234 # eventscript. There's an assumption here that the
1235 # event doesn't depend on any scheduled reconfigure.
1236 # This is true in the current code.
1240 # There is most likely a reconfigure in progress so
1241 # the service is possibly unstable. As above, we
1242 # defer any scheduled reconfigured. We also replay
1243 # the previous monitor status since that's the best
1244 # information we have.
1245 ctdb_replay_monitor_status
1251 ##################################################################
1252 # Does CTDB manage this service? - and associated auto-start/stop
1254 ctdb_compat_managed_service ()
1256 if [ "$1" = "yes" -a "$2" = "$service_name" ] ; then
1257 CTDB_MANAGED_SERVICES="$CTDB_MANAGED_SERVICES $2"
1261 is_ctdb_managed_service ()
1265 # $t is used just for readability and to allow better accurate
1266 # matching via leading/trailing spaces
1267 t=" $CTDB_MANAGED_SERVICES "
1269 # Return 0 if "<space>$service_name<space>" appears in $t
1270 if [ "${t#* ${service_name} }" != "${t}" ] ; then
1274 # If above didn't match then update $CTDB_MANAGED_SERVICES for
1275 # backward compatibility and try again.
1276 ctdb_compat_managed_service "$CTDB_MANAGES_VSFTPD" "vsftpd"
1277 ctdb_compat_managed_service "$CTDB_MANAGES_SAMBA" "samba"
1278 ctdb_compat_managed_service "$CTDB_MANAGES_WINBIND" "winbind"
1279 ctdb_compat_managed_service "$CTDB_MANAGES_HTTPD" "apache2"
1280 ctdb_compat_managed_service "$CTDB_MANAGES_HTTPD" "httpd"
1281 ctdb_compat_managed_service "$CTDB_MANAGES_ISCSI" "iscsi"
1282 ctdb_compat_managed_service "$CTDB_MANAGES_CLAMD" "clamd"
1283 ctdb_compat_managed_service "$CTDB_MANAGES_NFS" "nfs"
1284 ctdb_compat_managed_service "$CTDB_MANAGES_NFS" "nfs-ganesha-gpfs"
1286 t=" $CTDB_MANAGED_SERVICES "
1288 # Return 0 if "<space>$service_name<space>" appears in $t
1289 [ "${t#* ${service_name} }" != "${t}" ]
1292 ctdb_start_stop_service ()
1296 # Allow service-start/service-stop pseudo-events to start/stop
1297 # services when we're not auto-starting/stopping and we're not
1299 case "$event_name" in
1301 if is_ctdb_managed_service ; then
1302 die 'service-start event not permitted when service is managed'
1304 if [ "$CTDB_SERVICE_AUTOSTARTSTOP" = "yes" ] ; then
1305 die 'service-start event not permitted with $CTDB_SERVICE_AUTOSTARTSTOP = yes'
1311 if is_ctdb_managed_service ; then
1312 die 'service-stop event not permitted when service is managed'
1314 if [ "$CTDB_SERVICE_AUTOSTARTSTOP" = "yes" ] ; then
1315 die 'service-stop event not permitted with $CTDB_SERVICE_AUTOSTARTSTOP = yes'
1322 # Do nothing unless configured to...
1323 [ "$CTDB_SERVICE_AUTOSTARTSTOP" = "yes" ] || return 0
1325 [ "$event_name" = "monitor" ] || return 0
1327 if is_ctdb_managed_service ; then
1328 if ! is_ctdb_previously_managed_service ; then
1329 echo "Starting service \"$service_name\" - now managed"
1330 background_with_logging ctdb_service_start
1334 if is_ctdb_previously_managed_service ; then
1335 echo "Stopping service \"$service_name\" - no longer managed"
1336 background_with_logging ctdb_service_stop
1342 ctdb_service_start ()
1344 # The service is marked managed if we've ever tried to start it.
1345 ctdb_service_managed
1347 service_start || return $?
1353 ctdb_service_stop ()
1355 ctdb_service_unmanaged
1359 # Default service_start() and service_stop() functions.
1361 # These may be overridden in an eventscript.
1364 service "$service_name" start
1369 service "$service_name" stop
1372 ##################################################################
1374 ctdb_standard_event_handler ()
1391 _family="$1" ; shift
1392 if [ "$_family" = "inet6" ] ; then
1393 _iptables_cmd="ip6tables"
1395 _iptables_cmd="iptables"
1398 # iptables doesn't like being re-entered, so flock-wrap it.
1399 flock -w 30 "${CTDB_VARDIR}/iptables-ctdb.flock" "$_iptables_cmd" "$@"
1402 # AIX (and perhaps others?) doesn't have mktemp
1403 if ! which mktemp >/dev/null 2>&1 ; then
1407 if [ "$1" = "-d" ] ; then
1411 _d="${TMPDIR:-/tmp}"
1412 _hex10=$(dd if=/dev/urandom count=20 2>/dev/null | \
1414 sed -e 's@\(..........\).*@\1@')
1415 _t="${_d}/tmp.${_hex10}"
1428 ########################################################
1430 ########################################################
1436 tickledir="$CTDB_VARDIR/state/tickles"
1437 mkdir -p "$tickledir"
1440 _pnn=$(ctdb pnn) ; _pnn=${_pnn#PNN:}
1442 # What public IPs do I hold?
1443 _ips=$(ctdb -X ip | awk -F'|' -v pnn=$_pnn '$3 == pnn {print $2}')
1445 # IPs as a regexp choice
1446 _ipschoice="($(echo $_ips | sed -e 's/ /|/g' -e 's/\./\\\\./g'))"
1448 # Record connections to our public IPs in a temporary file
1449 _my_connections="${tickledir}/${_port}.connections"
1450 rm -f "$_my_connections"
1452 awk -v destpat="^${_ipschoice}:${_port}\$" \
1453 '$1 == "tcp" && $6 == "ESTABLISHED" && $4 ~ destpat {print $5, $4}' |
1454 sort >"$_my_connections"
1456 # Record our current tickles in a temporary file
1457 _my_tickles="${tickledir}/${_port}.tickles"
1458 rm -f "$_my_tickles"
1459 for _i in $_ips ; do
1460 ctdb -X gettickles $_i $_port |
1461 awk -F'|' 'NR > 1 { printf "%s:%s %s:%s\n", $2, $3, $4, $5 }'
1463 sort >"$_my_tickles"
1465 # Add tickles for connections that we haven't already got tickles for
1466 comm -23 "$_my_connections" "$_my_tickles" |
1467 while read _src _dst ; do
1468 ctdb addtickle $_src $_dst
1471 # Remove tickles for connections that are no longer there
1472 comm -13 "$_my_connections" "$_my_tickles" |
1473 while read _src _dst ; do
1474 ctdb deltickle $_src $_dst
1477 rm -f "$_my_connections" "$_my_tickles"
1480 ########################################################
1481 # load a site local config file
1482 ########################################################
1484 [ -n "$CTDB_RC_LOCAL" -a -x "$CTDB_RC_LOCAL" ] && {
1488 [ -x $CTDB_BASE/rc.local ] && {
1489 . $CTDB_BASE/rc.local
1492 [ -d $CTDB_BASE/rc.local.d ] && {
1493 for i in $CTDB_BASE/rc.local.d/* ; do
1494 [ -x "$i" ] && . "$i"
1498 script_name="${0##*/}" # basename
1499 service_fail_limit=1