+# Hey Emacs, this is a -*- shell-script -*- !!!
+
# utility functions for ctdb event scripts
PATH=/bin:/usr/bin:/usr/sbin:/sbin:$PATH
+[ -z "$CTDB_VARDIR" ] && {
+ export CTDB_VARDIR="/var/ctdb"
+}
+[ -z "$CTDB_ETCDIR" ] && {
+ export CTDB_ETCDIR="/etc"
+}
+
#######################################
# pull in a system config file, if any
-loadconfig() {
-
- if [ "$1" != "ctdb" ] ; then
- loadconfig "ctdb"
- fi
+_loadconfig() {
if [ -z "$1" ] ; then
foo="${service_config:-${service_name}}"
if [ -n "$foo" ] ; then
loadconfig "$foo"
fi
+ elif [ "$1" != "ctdb" ] ; then
+ loadconfig "ctdb"
fi
- if [ -f /etc/sysconfig/$1 ]; then
- . /etc/sysconfig/$1
- elif [ -f /etc/default/$1 ]; then
- . /etc/default/$1
+ if [ -f $CTDB_ETCDIR/sysconfig/$1 ]; then
+ . $CTDB_ETCDIR/sysconfig/$1
+ elif [ -f $CTDB_ETCDIR/default/$1 ]; then
+ . $CTDB_ETCDIR/default/$1
elif [ -f $CTDB_BASE/sysconfig/$1 ]; then
. $CTDB_BASE/sysconfig/$1
fi
}
+loadconfig () {
+ _loadconfig "$@"
+}
+
##############################################################
# determine on what type of system (init style) we are running
detect_init_style() {
######################################################
# simulate /sbin/service on platforms that don't have it
-service() {
+# _service() makes it easier to hook the service() function for
+# testing.
+_service ()
+{
_service_name="$1"
_op="$2"
[ -z "$_service_name" ] && return
if [ -x /sbin/service ]; then
- /sbin/service "$_service_name" "$_op"
- elif [ -x /etc/init.d/$_service_name ]; then
- /etc/init.d/$_service_name "$_op"
- elif [ -x /etc/rc.d/init.d/$_service_name ]; then
- /etc/rc.d/init.d/$_service_name "$_op"
+ $_nice /sbin/service "$_service_name" "$_op"
+ elif [ -x $CTDB_ETCDIR/init.d/$_service_name ]; then
+ $_nice $CTDB_ETCDIR/init.d/$_service_name "$_op"
+ elif [ -x $CTDB_ETCDIR/rc.d/init.d/$_service_name ]; then
+ $_nice $CTDB_ETCDIR/rc.d/init.d/$_service_name "$_op"
fi
}
+service()
+{
+ _nice=""
+ _service "$@"
+}
+
######################################################
# simulate /sbin/service (niced) on platforms that don't have it
-nice_service() {
- # do nothing, when no service was specified
- [ -z "$1" ] && return
-
- nice service "$@"
+nice_service()
+{
+ _nice="nice"
+ _service "$@"
}
######################################################
-# wait for a command to return a zero exit status
-# usage: ctdb_wait_command SERVICE_NAME <command>
-######################################################
-ctdb_wait_command() {
- service_name="$1"
- wait_cmd="$2"
- [ -z "$wait_cmd" ] && return;
- all_ok=0
- echo "Waiting for service $service_name to start"
- while [ $all_ok -eq 0 ]; do
- $wait_cmd > /dev/null 2>&1 && all_ok=1
- ctdb status > /dev/null 2>&1 || {
- echo "ctdb daemon has died. Exiting wait for $service_name"
- exit 1
- }
- [ $all_ok -eq 1 ] || sleep 1
- done
- echo "Local service $service_name is up"
+# wrapper around /proc/ settings to allow them to be hooked
+# for testing
+# 1st arg is relative path under /proc/, 2nd arg is value to set
+set_proc ()
+{
+ echo "$2" >"/proc/$1"
}
+######################################################
+# wrapper around getting file contents from /proc/ to allow
+# this to be hooked for testing
+# 1st arg is relative path under /proc/
+get_proc ()
+{
+ cat "/proc/$1"
+}
######################################################
-# wait for a set of tcp ports
-# usage: ctdb_wait_tcp_ports SERVICE_NAME <ports...>
+# Check that an RPC service is healthy -
+# this includes allowing a certain number of failures
+# before marking the NFS service unhealthy.
+#
+# usage: nfs_check_rpc_service SERVICE_NAME [ triple ...]
+#
+# each triple is a set of 3 arguments: an operator, a
+# fail count limit and an action string.
+#
+# For example:
+#
+# nfs_check_rpc_service "lockd" \
+# -ge 15 "verbose restart unhealthy" \
+# -eq 10 "restart:bs"
+#
+# says that if lockd is down for 15 iterations then do
+# a verbose restart of lockd and mark the node unhealthy.
+# Before this, after 10 iterations of failure, the
+# service is restarted silently in the background.
+# Order is important: the number of failures need to be
+# specified in reverse order because processing stops
+# after the first condition that is true.
######################################################
-ctdb_wait_tcp_ports() {
- service_name="$1"
- shift
- wait_ports="$*"
- [ -z "$wait_ports" ] && return;
- all_ok=0
- echo "Waiting for tcp service $service_name to start"
- while [ $all_ok -eq 0 ]; do
- all_ok=1
- for p in $wait_ports; do
- if [ -x /usr/bin/netcat ]; then
- /usr/bin/netcat -z 127.0.0.1 $p > /dev/null || all_ok=0
- elif [ -x /usr/bin/nc ]; then
- /usr/bin/nc -z 127.0.0.1 $p > /dev/null || all_ok=0
- elif [ -x /usr/bin/netstat ]; then
- (netstat -a -n | egrep "0.0.0.0:$p[[:space:]]*LISTEN" > /dev/null) || all_ok=0
- elif [ -x /bin/netstat ]; then
- (netstat -a -n | egrep "0.0.0.0:$p[[:space:]]*LISTEN" > /dev/null) || all_ok=0
- else
- echo "No tool to check tcp ports availabe. can not check in ctdb_wait_tcp_ports"
- return 127
- fi
- done
- [ $all_ok -eq 1 ] || sleep 1
- ctdb status > /dev/null 2>&1 || {
- echo "ctdb daemon has died. Exiting tcp wait $service_name"
- return 1
- }
- done
- echo "Local tcp services for $service_name are up"
-}
+nfs_check_rpc_service ()
+{
+ _prog_name="$1" ; shift
+ _version=1
+ _rpc_prog="$_prog_name"
+ _restart=""
+ _opts=""
+ case "$_prog_name" in
+ knfsd)
+ _rpc_prog=nfs
+ _version=3
+ _restart="echo 'Trying to restart NFS service'"
+ _restart="${_restart}; startstop_nfs restart"
+ ;;
+ mountd)
+ _opts="${MOUNTD_PORT:+ -p }${MOUNTD_PORT}"
+ ;;
+ rquotad)
+ _opts="${RQUOTAD_PORT:+ -p }${RQUOTAD_PORT}"
+ ;;
+ lockd)
+ _rpc_prog=nlockmgr
+ _version=4
+ _restart="echo 'Trying to restart lock manager service'"
+ _restart="${_restart}; startstop_nfslock restart"
+ ;;
+ statd)
+ _rpc_prog=status
+ _opts="${STATD_HOSTNAME:+ -n }${STATD_HOSTNAME}"
+ _opts="${_opts}${STATD_PORT:+ -p }${STATD_PORT}"
+ _opts="${_opts}${STATD_OUTGOING_PORT:+ -o }${STATD_OUTGOING_PORT}"
+ ;;
+ *)
+ echo "Internal error: unknown RPC program \"$_prog_name\"."
+ exit 1
+ esac
+
+ _service_name="nfs_${_prog_name}"
+
+ if ctdb_check_rpc "$_rpc_prog" $_version >/dev/null ; then
+ ctdb_counter_init "$_service_name"
+ return 0
+ fi
+
+ ctdb_counter_incr "$_service_name"
+
+ while [ -n "$3" ] ; do
+ ctdb_check_counter "quiet" "$1" "$2" "$_service_name" || {
+ for _action in $3 ; do
+ case "$_action" in
+ verbose)
+ echo "$ctdb_check_rpc_out"
+ ;;
+ restart|restart:*)
+ # No explicit command specified, construct rpc command.
+ if [ -z "$_restart" ] ; then
+ _p="rpc.${_prog_name}"
+ _restart="echo 'Trying to restart $_prog_name [${_p}${_opts}]'"
+ _restart="${_restart}; killall -q -9 $_p"
+ _restart="${_restart}; $_p $_opts"
+ fi
+
+ # Process restart flags...
+ _flags="${_action#restart:}"
+ # There may not have been a colon...
+ [ "$_flags" != "$_action" ] || _flags=""
+ # q=quiet - everything to /dev/null
+ if [ "${_flags#*q}" != "$_flags" ] ; then
+ _restart="{ ${_restart} ; } >/dev/null 2>&1"
+ fi
+ # s=stealthy - last command to /dev/null
+ if [ "${_flags#*s}" != "$_flags" ] ; then
+ _restart="${_restart} >/dev/null 2>&1"
+ fi
+ # b=background - the whole thing, easy and reliable
+ if [ "${_flags#*b}" != "$_flags" ] ; then
+ _restart="{ ${_restart} ; } &"
+ fi
+
+ # Do it!
+ eval "${_restart}"
+ ;;
+ unhealthy)
+ exit 1
+ ;;
+ *)
+ echo "Internal error: unknown action \"$_action\"."
+ exit 1
+ esac
+ done
+
+ # Only process the first action group.
+ break
+ }
+ shift 3
+ done
+}
######################################################
# check that a rpc server is registered with portmap
# and responding to requests
-# usage: ctdb_check_rpc SERVICE_NAME PROGNUM VERSION
+# usage: ctdb_check_rpc SERVICE_NAME VERSION
######################################################
-ctdb_check_rpc() {
+ctdb_check_rpc ()
+{
progname="$1"
- prognum="$2"
- version="$3"
- rpcinfo -u localhost $prognum $version > /dev/null || {
- echo "ERROR: $progname not responding to rpc requests"
- exit 1
- }
+ version="$2"
+
+ if ! ctdb_check_rpc_out=$(rpcinfo -u localhost $progname $version 2>&1) ; then
+ ctdb_check_rpc_out="ERROR: $progname failed RPC check:
+$ctdb_check_rpc_out"
+ echo "$ctdb_check_rpc_out"
+ return 1
+ fi
}
######################################################
continue
;;
*)
- [ -d "$d" ] || return 1
+ [ -d "${d}/." ] || return 1
esac
done
}
_failed=0
_killcount=0
- connfile="$CTDB_BASE/state/connections.$_IP"
+ connfile="$CTDB_VARDIR/state/connections.$_IP"
netstat -tn |egrep "^tcp.*[[:space:]]+$_IP:.*ESTABLISHED" | awk '{print $4" "$5}' > $connfile
netstat -tn |egrep "^tcp.*[[:space:]]+::ffff:$_IP:.*ESTABLISHED" | awk '{print $4" "$5}' >> $connfile
esac
_killcount=`expr $_killcount + 1`
done < $connfile
- /bin/rm -f $connfile
+ rm -f $connfile
[ $_failed = 0 ] || {
echo "Failed to send killtcp control"
_failed=0
_killcount=0
- connfile="$CTDB_BASE/state/connections.$_IP"
+ connfile="$CTDB_VARDIR/state/connections.$_IP"
netstat -tn |egrep "^tcp.*[[:space:]]+$_IP:.*ESTABLISHED" | awk '{print $4" "$5}' > $connfile
netstat -tn |egrep "^tcp.*[[:space:]]+::ffff:$_IP:.*ESTABLISHED" | awk '{print $4" "$5}' >> $connfile
ctdb killtcp $srcip:$srcport $destip:$destport >/dev/null 2>&1 || _failed=1
_killcount=`expr $_killcount + 1`
done < $connfile
- /bin/rm -f $connfile
+ rm -f $connfile
[ $_failed = 0 ] || {
echo "Failed to send killtcp control"
echo "killed $_killcount TCP connections to released IP $_IP"
}
+##################################################################
+# tickle any TCP connections with the given IP
+##################################################################
+tickle_tcp_connections() {
+ _IP="$1"
+ _failed=0
+
+ _killcount=0
+ connfile="$CTDB_VARDIR/state/connections.$_IP"
+ netstat -tn |egrep "^tcp.*[[:space:]]+$_IP:.*ESTABLISHED" | awk '{print $4" "$5}' > $connfile
+ netstat -tn |egrep "^tcp.*[[:space:]]+::ffff:$_IP:.*ESTABLISHED" | awk '{print $4" "$5}' >> $connfile
+
+ while read dest src; do
+ srcip=`echo $src | sed -e "s/:[^:]*$//"`
+ srcport=`echo $src | sed -e "s/^.*://"`
+ destip=`echo $dest | sed -e "s/:[^:]*$//"`
+ destport=`echo $dest | sed -e "s/^.*://"`
+ echo "Tickle TCP connection $srcip:$srcport $destip:$destport"
+ ctdb tickle $srcip:$srcport $destip:$destport >/dev/null 2>&1 || _failed=1
+ echo "Tickle TCP connection $destip:$destport $srcip:$srcport"
+ ctdb tickle $destip:$destport $srcip:$srcport >/dev/null 2>&1 || _failed=1
+ done < $connfile
+ rm -f $connfile
+
+ [ $_failed = 0 ] || {
+ echo "Failed to send tickle control"
+ return;
+ }
+}
+
########################################################
# start/stop the nfs service on different platforms
########################################################
startstop_nfs() {
PLATFORM="unknown"
- [ -x /etc/init.d/nfsserver ] && {
+ [ -x $CTDB_ETCDIR/init.d/nfsserver ] && {
PLATFORM="sles"
}
- [ -x /etc/init.d/nfslock ] && {
+ [ -x $CTDB_ETCDIR/init.d/nfslock ] && {
PLATFORM="rhel"
}
stop)
service nfsserver stop > /dev/null 2>&1
;;
+ restart)
+ set_proc "fs/nfsd/threads" 0
+ service nfsserver stop > /dev/null 2>&1
+ pkill -9 nfsd
+ service nfsserver start
+ ;;
esac
;;
rhel)
service nfs start
;;
stop)
+ service nfs stop
+ service nfslock stop
+ ;;
+ restart)
+ set_proc "fs/nfsd/threads" 0
service nfs stop > /dev/null 2>&1
service nfslock stop > /dev/null 2>&1
+ pkill -9 nfsd
+ service nfslock start
+ service nfs start
;;
esac
;;
########################################################
startstop_nfslock() {
PLATFORM="unknown"
- [ -x /etc/init.d/nfsserver ] && {
+ [ -x $CTDB_ETCDIR/init.d/nfsserver ] && {
PLATFORM="sles"
}
- [ -x /etc/init.d/nfslock ] && {
+ [ -x $CTDB_ETCDIR/init.d/nfslock ] && {
PLATFORM="rhel"
}
stop)
service nfsserver stop > /dev/null 2>&1
;;
+ restart)
+ service nfsserver stop
+ service nfsserver start
+ ;;
esac
;;
rhel)
stop)
service nfslock stop > /dev/null 2>&1
;;
+ restart)
+ service nfslock stop
+ service nfslock start
+ ;;
esac
;;
*)
esac
}
-########################################################
-# remove an ip address from an interface
-########################################################
-remove_ip() {
- # the ip tool will delete all secondary IPs if this is the primary.
- # To work around this _very_ annoying behaviour we have to keep a
- # record of the secondaries and re-add them afterwards. yuck
- secondaries=""
- if ip addr list dev $2 primary | grep -q "inet $1 " ; then
- secondaries=`ip addr list dev $2 secondary | grep " inet " | awk '{print $2}'`
- fi
- ip addr del $1 dev $2 >/dev/null 2>/dev/null || failed=1
- [ -z "$secondaries" ] || {
- for i in $secondaries; do
- if ip addr list dev $2 | grep -q "inet $i" ; then
- echo "kept secondary $i on dev $2"
- else
- echo "re-adding secondary address $i to dev $2"
- ip addr add $i dev $2 || failed=1
- fi
- done
+add_ip_to_iface()
+{
+ local _iface=$1
+ local _ip=$2
+ local _maskbits=$3
+ local _state_dir="$CTDB_VARDIR/state/interface_modify"
+ local _lockfile="$_state_dir/$_iface.flock"
+ local _readd_base="$_state_dir/$_iface.readd.d"
+
+ mkdir -p $_state_dir || {
+ ret=$?
+ echo "Failed to mkdir -p $_state_dir - $ret"
+ return $ret
+ }
+
+ test -f $_lockfile || {
+ touch $_lockfile
+ }
+
+ flock --timeout 30 $_lockfile $CTDB_BASE/interface_modify.sh add "$_iface" "$_ip" "$_maskbits" "$_readd_base"
+ return $?
+}
+
+delete_ip_from_iface()
+{
+ local _iface=$1
+ local _ip=$2
+ local _maskbits=$3
+ local _state_dir="$CTDB_VARDIR/state/interface_modify"
+ local _lockfile="$_state_dir/$_iface.flock"
+ local _readd_base="$_state_dir/$_iface.readd.d"
+
+ mkdir -p $_state_dir || {
+ ret=$?
+ echo "Failed to mkdir -p $_state_dir - $ret"
+ return $ret
+ }
+
+ test -f $_lockfile || {
+ touch $_lockfile
}
+
+ flock --timeout 30 $_lockfile $CTDB_BASE/interface_modify.sh delete "$_iface" "$_ip" "$_maskbits" "$_readd_base"
+ return $?
+}
+
+setup_iface_ip_readd_script()
+{
+ local _iface=$1
+ local _ip=$2
+ local _maskbits=$3
+ local _readd_script=$4
+ local _state_dir="$CTDB_VARDIR/state/interface_modify"
+ local _lockfile="$_state_dir/$_iface.flock"
+ local _readd_base="$_state_dir/$_iface.readd.d"
+
+ mkdir -p $_state_dir || {
+ ret=$?
+ echo "Failed to mkdir -p $_state_dir - $ret"
+ return $ret
+ }
+
+ test -f $_lockfile || {
+ touch $_lockfile
+ }
+
+ flock --timeout 30 $_lockfile $CTDB_BASE/interface_modify.sh readd_script "$_iface" "$_ip" "$_maskbits" "$_readd_base" "$_readd_script"
+ return $?
}
########################################################
# ctdb_check_counter_limit succeeds when count >= <limit>
########################################################
_ctdb_counter_common () {
- _counter_file="$ctdb_fail_dir/$service_name"
+ _service_name="${1:-${service_name}}"
+ _counter_file="$ctdb_fail_dir/$_service_name"
mkdir -p "${_counter_file%/*}" # dirname
}
ctdb_counter_init () {
- _ctdb_counter_common
+ _ctdb_counter_common "$1"
>"$_counter_file"
}
ctdb_counter_incr () {
- _ctdb_counter_common
+ _ctdb_counter_common "$1"
# unary counting!
echo -n 1 >> "$_counter_file"
echo "WARNING: less than $_limit consecutive failures ($_size) for $service_name, not unhealthy yet"
fi
}
+ctdb_check_counter_equal () {
+ _ctdb_counter_common
+
+ _limit=$1
+
+ # unary counting!
+ _size=$(stat -c "%s" "$_counter_file" 2>/dev/null || echo 0)
+ if [ $_size -eq $_limit ] ; then
+ return 1
+ fi
+ return 0
+}
+ctdb_check_counter () {
+ _msg="${1:-error}" # "error" - anything else is silent on fail
+ _op="${2:--ge}" # an integer operator supported by test
+ _limit="${3:-${service_fail_limit}}"
+ shift 3
+ _ctdb_counter_common "$1"
+
+ # unary counting!
+ _size=$(stat -c "%s" "$_counter_file" 2>/dev/null || echo 0)
+ if [ $_size $_op $_limit ] ; then
+ if [ "$_msg" = "error" ] ; then
+ echo "ERROR: $_limit consecutive failures for $_service_name, marking node unhealthy"
+ exit 1
+ else
+ return 1
+ fi
+ fi
+}
+
########################################################
-ctdb_spool_dir="/var/spool/ctdb"
-ctdb_status_dir="$ctdb_spool_dir/status"
-ctdb_fail_dir="$ctdb_spool_dir/failcount"
-ctdb_active_dir="$ctdb_spool_dir/active"
+ctdb_status_dir="$CTDB_VARDIR/status"
+ctdb_fail_dir="$CTDB_VARDIR/failcount"
+
+ctdb_setup_service_state_dir ()
+{
+ service_state_dir="$CTDB_VARDIR/state/${1:-${service_name}}"
+ mkdir -p "$service_state_dir" || {
+ echo "Error creating state dir \"$service_state_dir\""
+ exit 1
+ }
+}
+
+########################################################
+# Managed status history, for auto-start/stop
+
+ctdb_managed_dir="$CTDB_VARDIR/managed_history"
+
+_ctdb_managed_common ()
+{
+ _service_name="${1:-${service_name}}"
+ _ctdb_managed_file="$ctdb_managed_dir/$_service_name"
+}
+
+ctdb_service_managed ()
+{
+ _ctdb_managed_common "$@"
+ mkdir -p "$ctdb_managed_dir"
+ touch "$_ctdb_managed_file"
+}
+
+ctdb_service_unmanaged ()
+{
+ _ctdb_managed_common "$@"
+ rm -f "$_ctdb_managed_file"
+}
+
+is_ctdb_previously_managed_service ()
+{
+ _ctdb_managed_common "$@"
+ [ -f "$_ctdb_managed_file" ]
+}
+
+########################################################
+# Check and set status
log_status_cat ()
{
- echo "node is \"$1\", problem with \"${script_name}\": $(cat $2)"
+ echo "node is \"$1\", \"${script_name}\" reports problem: $(cat $2)"
}
ctdb_checkstatus ()
esac
}
+##################################################################
+# Reconfigure a service on demand
+
+_ctdb_service_reconfigure_common ()
+{
+ _d="$ctdb_status_dir/${1:-${service_name}}"
+ mkdir -p "$_d"
+ _ctdb_service_reconfigure_flag="$_d/reconfigure"
+}
+
ctdb_service_needs_reconfigure ()
{
- [ -e "$ctdb_status_dir/$service_name/reconfigure" ]
+ _ctdb_service_reconfigure_common "$@"
+ [ -e "$_ctdb_service_reconfigure_flag" ]
}
ctdb_service_set_reconfigure ()
{
- d="$ctdb_status_dir/$service_name"
- mkdir -p "$d"
- >"$d/reconfigure"
+ _ctdb_service_reconfigure_common "$@"
+ >"$_ctdb_service_reconfigure_flag"
}
ctdb_service_unset_reconfigure ()
{
- rm -f "$ctdb_status_dir/$service_name/reconfigure"
+ _ctdb_service_reconfigure_common "$@"
+ rm -f "$_ctdb_service_reconfigure_flag"
}
ctdb_service_reconfigure ()
{
- if [ -n "$service_reconfigure" ] ; then
- eval $service_reconfigure
- else
- service "$service_name" restart
+ echo "Reconfiguring service \"$service_name\"..."
+ ctdb_service_unset_reconfigure "$@"
+ service_reconfigure "$@" || return $?
+ ctdb_counter_init "$@"
+}
+
+# Default service_reconfigure() function.
+service_reconfigure ()
+{
+ service "${1:-$service_name}" restart
+}
+
+ctdb_service_check_reconfigure ()
+{
+ # Only do this for certain events.
+ case "$event_name" in
+ monitor|ipreallocated) : ;;
+ *) return 0
+ esac
+
+ if ctdb_service_needs_reconfigure "$@" ; then
+ ctdb_service_reconfigure "$@"
+
+ # Fall through to non-monitor events.
+ [ "$event_name" = "monitor" ] || return 0
+
+ # We don't want to proceed with the rest of the monitor event
+ # here, so we exit. However, if we exit 0 then, if the
+ # service was previously broken, we might return a false
+ # positive. So we simply retrieve the status of this script
+ # from the previous monitor loop and exit with that status.
+ ctdb scriptstatus | \
+ grep -q -E "^${script_name}[[:space:]]+Status:OK[[:space:]]"
+ exit $?
fi
- ctdb_service_unset_reconfigure
- ctdb_counter_init
}
+##################################################################
+# Does CTDB manage this service? - and associated auto-start/stop
+
ctdb_compat_managed_service ()
{
- if [ "$1" = "yes" ] ; then
- t="$t $2 "
+ if [ "$1" = "yes" -a "$2" = "$_service_name" ] ; then
+ CTDB_MANAGED_SERVICES="$CTDB_MANAGED_SERVICES $2"
fi
}
is_ctdb_managed_service ()
{
+ _service_name="${1:-${service_name}}"
+
+ # $t is used just for readability and to allow better accurate
+ # matching via leading/trailing spaces
t=" $CTDB_MANAGED_SERVICES "
+ # Return 0 if "<space>$_service_name<space>" appears in $t
+ if [ "${t#* ${_service_name} }" != "${t}" ] ; then
+ return 0
+ fi
+
+ # If above didn't match then update $CTDB_MANAGED_SERVICES for
+ # backward compatibility and try again.
ctdb_compat_managed_service "$CTDB_MANAGES_VSFTPD" "vsftpd"
ctdb_compat_managed_service "$CTDB_MANAGES_SAMBA" "samba"
ctdb_compat_managed_service "$CTDB_MANAGES_SCP" "scp"
- ctdb_compat_managed_service "$CTDB_MANAGES_WINDBIND" "windbind"
+ ctdb_compat_managed_service "$CTDB_MANAGES_WINBIND" "winbind"
ctdb_compat_managed_service "$CTDB_MANAGES_HTTPD" "httpd"
ctdb_compat_managed_service "$CTDB_MANAGES_ISCSI" "iscsi"
ctdb_compat_managed_service "$CTDB_MANAGES_CLAMD" "clamd"
ctdb_compat_managed_service "$CTDB_MANAGES_NFS" "nfs"
+ ctdb_compat_managed_service "$CTDB_MANAGES_NFS" "nfs-ganesha-gpfs"
+
+ t=" $CTDB_MANAGED_SERVICES "
- # Returns 0 if "<space>$service_name<space>" appears in $t
- [ "${t#* ${service_name} }" != "${t}" ]
+ # Return 0 if "<space>$_service_name<space>" appears in $t
+ [ "${t#* ${_service_name} }" != "${t}" ]
}
ctdb_start_stop_service ()
{
- _active="$ctdb_active_dir/$service_name"
+ _service_name="${1:-${service_name}}"
- if is_ctdb_managed_service ; then
- if ! [ -e "$_active" ] ; then
- echo "Starting service $service_name"
- ctdb_service_start || exit $?
- mkdir -p "$ctdb_active_dir"
- touch "$_active"
- exit 0
+ [ "$event_name" = "monitor" ] || return 0
+
+ if is_ctdb_managed_service "$_service_name" ; then
+ if ! is_ctdb_previously_managed_service "$_service_name" ; then
+ echo "Starting service \"$_service_name\" - now managed"
+ ctdb_service_start "$_service_name"
+ exit $?
fi
- elif ! is_ctdb_managed_service ; then
- if [ -e "$_active" ] ; then
- echo "Stopping service $service_name"
- ctdb_service_stop || exit $?
- rm -f "$_active"
+ else
+ if is_ctdb_previously_managed_service "$_service_name" ; then
+ echo "Stopping service \"$_service_name\" - no longer managed"
+ ctdb_service_stop "$_service_name"
+ exit $?
fi
- exit 0
fi
}
ctdb_service_start ()
{
- if [ -n "$service_start" ] ; then
- eval $service_start
- else
- service "$service_name" start
- fi
- ctdb_counter_init
+ # The service is marked managed if we've ever tried to start it.
+ ctdb_service_managed "$@"
+
+ # Here we only want $1. If no argument is passed then
+ # service_start needs to know.
+ service_start "$@" || return $?
+
+ ctdb_counter_init "$@"
}
ctdb_service_stop ()
{
- if [ -n "$service_stop" ] ; then
- eval $service_stop
- else
- service "$service_name" stop
- fi
+ ctdb_service_unmanaged "$@"
+ service_stop "$@"
+}
+
+# Default service_start() and service_stop() functions.
+
+# These may be overridden in an eventscript. When overriding, the
+# following convention must be followed. If these functions are
+# called with no arguments then they may use internal logic to
+# determine whether the service is managed and, therefore, whether
+# they should take any action. However, if the service name is
+# specified as an argument then an attempt must be made to start or
+# stop the service. This is because the auto-start/stop code calls
+# them with the service name as an argument.
+service_start ()
+{
+ service "${1:-${service_name}}" start
}
+service_stop ()
+{
+ service "${1:-${service_name}}" stop
+}
+
+##################################################################
+
ctdb_standard_event_handler ()
{
case "$1" in
exit
;;
setstatus)
+ shift
ctdb_setstatus "$@"
exit
;;
esac
}
+ipv4_host_addr_to_net_addr()
+{
+ local HOST=$1
+ local MASKBITS=$2
+
+ local HOST0=$(echo $HOST | awk -F . '{print $4}')
+ local HOST1=$(echo $HOST | awk -F . '{print $3}')
+ local HOST2=$(echo $HOST | awk -F . '{print $2}')
+ local HOST3=$(echo $HOST | awk -F . '{print $1}')
+
+ local HOST_NUM=$(( $HOST0 + $HOST1 * 256 + $HOST2 * (256 ** 2) + $HOST3 * (256 ** 3) ))
+
+ local MASK_NUM=$(( ( (2**32 - 1) * (2**(32 - $MASKBITS)) ) & (2**32 - 1) ))
+
+ local NET_NUM=$(( $HOST_NUM & $MASK_NUM))
+
+ local NET0=$(( $NET_NUM & 255 ))
+ local NET1=$(( ($NET_NUM & (255 * 256)) / 256 ))
+ local NET2=$(( ($NET_NUM & (255 * 256**2)) / 256**2 ))
+ local NET3=$(( ($NET_NUM & (255 * 256**3)) / 256**3 ))
+
+ echo "$NET3.$NET2.$NET1.$NET0"
+}
+
+ipv4_maskbits_to_net_mask()
+{
+ local MASKBITS=$1
+
+ local MASK_NUM=$(( ( (2**32 - 1) * (2**(32 - $MASKBITS)) ) & (2**32 - 1) ))
+
+ local MASK0=$(( $MASK_NUM & 255 ))
+ local MASK1=$(( ($MASK_NUM & (255 * 256)) / 256 ))
+ local MASK2=$(( ($MASK_NUM & (255 * 256**2)) / 256**2 ))
+ local MASK3=$(( ($MASK_NUM & (255 * 256**3)) / 256**3 ))
+
+ echo "$MASK3.$MASK2.$MASK1.$MASK0"
+}
+
+ipv4_is_valid_addr()
+{
+ local ADDR=$1
+ local fail=0
+
+ local N=`echo $ADDR | sed -e 's/[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*//'`
+ test -n "$N" && fail=1
+
+ local ADDR0=$(echo $ADDR | awk -F . '{print $4}')
+ local ADDR1=$(echo $ADDR | awk -F . '{print $3}')
+ local ADDR2=$(echo $ADDR | awk -F . '{print $2}')
+ local ADDR3=$(echo $ADDR | awk -F . '{print $1}')
+
+ test "$ADDR0" -gt 255 && fail=1
+ test "$ADDR1" -gt 255 && fail=1
+ test "$ADDR2" -gt 255 && fail=1
+ test "$ADDR3" -gt 255 && fail=1
+
+ test x"$fail" != x"0" && {
+ #echo "IPv4: '$ADDR' is not a valid address"
+ return 1;
+ }
+
+ return 0;
+}
+
+# iptables doesn't like being re-entered, so flock-wrap it.
+iptables()
+{
+ flock -w 30 $CTDB_VARDIR/iptables-ctdb.flock /sbin/iptables "$@"
+}
+
+########################################################
+# tickle handling
+########################################################
+
+# Temporary directory for tickles.
+tickledir="$CTDB_VARDIR/state/tickles"
+mkdir -p "$tickledir"
+
+update_tickles ()
+{
+ _port="$1"
+
+ mkdir -p "$tickledir" # Just in case
+
+ # Who am I?
+ _pnn=$(ctdb pnn) ; _pnn=${_pnn#PNN:}
+
+ # What public IPs do I hold?
+ _ips=$(ctdb -Y ip | awk -F: -v pnn=$_pnn '$3 == pnn {print $2}')
+
+ # IPs as a regexp choice
+ _ipschoice="($(echo $_ips | sed -e 's/ /|/g' -e 's/\./\\\\./g'))"
+
+ # Record connections to our public IPs in a temporary file
+ _my_connections="${tickledir}/${_port}.connections"
+ rm -f "$_my_connections"
+ netstat -tn |
+ awk -v destpat="^${_ipschoice}:${_port}\$" \
+ '$1 == "tcp" && $6 == "ESTABLISHED" && $4 ~ destpat {print $5, $4}' |
+ sort >"$_my_connections"
+
+ # Record our current tickles in a temporary file
+ _my_tickles="${tickledir}/${_port}.tickles"
+ rm -f "$_my_tickles"
+ for _i in $_ips ; do
+ ctdb -Y gettickles $_i $_port |
+ awk -F: 'NR > 1 { printf "%s:%s %s:%s\n", $2, $3, $4, $5 }'
+ done |
+ sort >"$_my_tickles"
+
+ # Add tickles for connections that we haven't already got tickles for
+ comm -23 "$_my_connections" "$_my_tickles" |
+ while read _src _dst ; do
+ ctdb addtickle $_src $_dst
+ done
+
+ # Remove tickles for connections that are no longer there
+ comm -13 "$_my_connections" "$_my_tickles" |
+ while read _src _dst ; do
+ ctdb deltickle $_src $_dst
+ done
+
+ rm -f "$_my_connections" "$_my_tickles"
+}
+
########################################################
# load a site local config file
########################################################
+[ -n "$CTDB_RC_LOCAL" -a -x "$CTDB_RC_LOCAL" ] && {
+ . "$CTDB_RC_LOCAL"
+}
+
[ -x $CTDB_BASE/rc.local ] && {
. $CTDB_BASE/rc.local
}
script_name="${0##*/}" # basename
service_name="$script_name" # default is just the script name
service_fail_limit=1
+event_name="$1"
git.samba.org / ctdb.git / blobdiff