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|
#!/bin/sh
# script to manage nfs in a clustered environment
. $CTDB_BASE/functions
service_name="nfs"
service_start ()
{
startstop_nfs stop
startstop_nfs start
set_proc "sys/net/ipv4/tcp_tw_recycle" 1
}
service_stop ()
{
startstop_nfs stop
}
service_reconfigure ()
{
startstop_nfs restart
# if the ips have been reallocated, we must restart the lockmanager
# across all nodes and ping all statd listeners
[ -x $CTDB_BASE/statd-callout ] && {
$CTDB_BASE/statd-callout notify &
} >/dev/null 2>&1
}
loadconfig
[ "$NFS_SERVER_MODE" != "GANESHA" ] || exit 0
ctdb_setup_service_state_dir
statd_update_trigger="$service_state_dir/update-trigger"
# We want this file to always exist. The corner case is when
# auto-start/stop is switched off, NFS is added as a managed service
# some time after ctdbd is started and someone else starts the NFS
# service for us. In this case this file might not otherwise exist
# when we get to a monitor event.
touch "$statd_update_trigger"
ctdb_start_stop_service
is_ctdb_managed_service || exit 0
ctdb_service_check_reconfigure
case "$1" in
init)
# read statd from persistent database
;;
startup)
ctdb_service_start
;;
shutdown)
ctdb_service_stop
;;
takeip)
ctdb_service_set_reconfigure
;;
releaseip)
ctdb_service_set_reconfigure
;;
monitor)
# Check that directories for shares actually exist.
[ "$CTDB_NFS_SKIP_SHARE_CHECK" = "yes" ] || {
exportfs -v | grep '^/' |
sed -r -e 's@[[:space:]]+[^[:space:]()]+\([^[:space:]()]+\)$@@' |
ctdb_check_directories
} || exit $?
update_tickles 2049
# check that statd responds to rpc requests
# if statd is not running we try to restart it
# we only do this IF we have a rpc.statd command.
# For platforms where rpc.statd does not exist, we skip
# the check completely
p="rpc.statd"
which $p >/dev/null 2>/dev/null && \
nfs_check_rpc_service "statd" \
-ge 6 "verbose unhealthy" \
-eq 4 "verbose restart" \
-eq 2 "restart:bs"
# check that NFS responds to rpc requests
if [ "$CTDB_NFS_SKIP_KNFSD_ALIVE_CHECK" != "yes" ] ; then
nfs_check_rpc_service "knfsd" \
-ge 6 "verbose unhealthy" \
-eq 4 "verbose restart" \
-eq 2 "restart:bs"
fi
# check that lockd responds to rpc requests
nfs_check_rpc_service "lockd" \
-ge 15 "verbose restart unhealthy" \
-eq 10 "restart:bs"
# mountd is sometimes not started correctly on RHEL5
nfs_check_rpc_service "mountd" \
-ge 10 "verbose restart:b unhealthy" \
-eq 5 "restart:b"
# rquotad is sometimes not started correctly on RHEL5
# not a critical service so we dont flag the node as unhealthy
nfs_check_rpc_service "rquotad" \
-gt 0 "verbose restart:b"
# once every 600 seconds, update the statd state database for which
# clients need notifications
LAST_UPDATE=`stat --printf="%Y" "$statd_update_trigger"`
CURRENT_TIME=`date +"%s"`
[ $CURRENT_TIME -ge $(($LAST_UPDATE + 600)) ] && {
touch "$statd_update_trigger"
$CTDB_BASE/statd-callout updatelocal &
$CTDB_BASE/statd-callout updateremote &
}
;;
*)
ctdb_standard_event_handler "$@"
;;
esac
exit 0
|
