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|
#!/bin/sh
# script to manage nfs in a clustered environment
start_nfs() {
/bin/mkdir -p $CTDB_VARDIR/state/nfs
/bin/mkdir -p $CTDB_VARDIR/state/statd/ip
startstop_nfs stop
startstop_nfs start
echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle
}
. $CTDB_BASE/functions
service_name="nfs"
service_start="start_nfs"
service_stop="startstop_nfs stop"
loadconfig
ctdb_start_stop_service
case "$1" in
init)
# read statd from persistent database
;;
startup)
ctdb_service_start
mkdir -p $CTDB_VARDIR/state/statd
touch $CTDB_VARDIR/state/statd/update-trigger
;;
shutdown)
ctdb_service_stop
;;
takeip)
ctdb_service_set_reconfigure
;;
releaseip)
ctdb_service_set_reconfigure
;;
monitor)
if ctdb_service_needs_reconfigure ; then
ctdb_service_reconfigure
exit 0
fi
update_tickles 2049
# check that statd responds to rpc requests
# if statd is not running we try to restart it
if ctdb_check_rpc "STATD" 100024 1 >/dev/null ; then
(service_name="nfs_statd"; ctdb_counter_init)
else
p="rpc.statd" ; cmd="$p"
cmd="${cmd}${STATD_HOSTNAME:+ -n }${STATD_HOSTNAME}"
cmd="${cmd}${STATD_PORT:+ -p }${STATD_PORT}"
cmd="${cmd}${STATD_OUTGOING_PORT:+ -o }${STATD_OUTGOING_PORT}"
(
service_name="nfs_statd"
ctdb_counter_incr
ctdb_check_counter_limit 10 quiet >/dev/null
) || {
echo "$ctdb_check_rpc_out"
echo "Trying to restart STATD [$cmd]"
}
$cmd
fi
# check that NFS responds to rpc requests
[ "$CTDB_NFS_SKIP_KNFSD_ALIVE_CHECK" = "yes" ] || {
if ctdb_check_rpc "NFS" 100003 3 >/dev/null ; then
(service_name="nfs_knfsd"; ctdb_counter_init)
else
(
service_name="nfs_knfsd"
ctdb_counter_incr
ctdb_check_counter_limit 10 quiet >/dev/null
) || {
echo "$ctdb_check_rpc_out"
echo "Trying to restart NFS service"
startstop_nfs restart
exit 1
}
# we haven't hit the failure limit so restart quietly
startstop_nfs restart >/dev/null 2>&1 &
fi
}
# and that its directories are available
[ "$CTDB_NFS_SKIP_SHARE_CHECK" = "yes" ] || {
exportfs | grep -v '^#' | grep '^/' |
sed -e 's/[[:space:]]\+[^[:space:]]*$//' |
ctdb_check_directories
} || exit $?
# check that lockd responds to rpc requests
ctdb_check_rpc "LOCKD" 100021 1 || {
echo "Trying to restart lock manager service"
startstop_nfs restart
startstop_nfslock restart
exit 1
}
# mount needs special handling since it is sometimes not started
# correctly on RHEL5
ctdb_check_rpc "MOUNTD" 100005 1 || {
p="rpc.mountd"
cmd="${p}${MOUNTD_PORT:+ -p }${MOUNTD_PORT}"
echo "Trying to restart MOUNTD [${cmd}]"
killall -q -9 $p
$cmd &
exit 1
}
# rquotad needs special handling since it is sometimes not started
# correctly on RHEL5
# this is not a critical service so we dont flag the node as unhealthy
ctdb_check_rpc "RQUOTAD" 100011 1 || {
p="rpc.rquotad"
cmd="${p}${RQUOTAD_PORT:+ -p }${RQUOTAD_PORT}"
echo "Trying to restart RQUOTAD [${cmd}]"
killall -q -9 $p
$cmd &
}
# once every 60 seconds, update the statd state database for which
# clients need notifications
LAST_UPDATE=`stat --printf="%Y" $CTDB_VARDIR/state/statd/update-trigger`
CURRENT_TIME=`date +"%s"`
expr "$CURRENT_TIME" ">" "(" "$LAST_UPDATE" "+" "60" ")" >/dev/null 2>/dev/null
[ $? = "0" ] && {
mkdir -p $CTDB_VARDIR/state/statd
touch $CTDB_VARDIR/state/statd/update-trigger
$CTDB_BASE/statd-callout updatelocal &
$CTDB_BASE/statd-callout updateremote &
}
;;
ipreallocated)
# if the ips have been reallocated, we must restart the lockmanager
# across all nodes and ping all statd listeners
[ -x $CTDB_BASE/statd-callout ] && {
$CTDB_BASE/statd-callout notify &
} >/dev/null 2>&1
;;
*)
ctdb_standard_event_handler "$@"
;;
esac
exit 0
|
