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eventscripts: Reimplement kill_tcp_connections_local_only()

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... using kill_tcp_connections()

Signed-off-by: Martin Schwenke <martin@meltin.net>

(This used to be ctdb commit 10e4db8f796d1e3259733180494db3b4bbad291a)
This commit is contained in:
Martin Schwenke 2013-04-30 06:19:18 +10:00 committed by Amitay Isaacs
parent 5e828b48fe
commit a320e1f7f1
1 changed files with 10 additions and 35 deletions
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45
ctdb/config/functions
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@ -586,6 +586,12 @@ ctdb_check_command ()
################################################ ################################################
kill_tcp_connections() { kill_tcp_connections() {
_IP="$1" _IP="$1"
_oneway=false
if [ "$2" = "oneway" ] ; then
_oneway=true
fi
_failed=0 _failed=0
_killcount=0 _killcount=0
@ -598,7 +604,7 @@ kill_tcp_connections() {
echo "Killing TCP connection $src $dest" echo "Killing TCP connection $src $dest"
ctdb killtcp $src $dest >/dev/null 2>&1 || _failed=1 ctdb killtcp $src $dest >/dev/null 2>&1 || _failed=1
_destport="${dest##*:}" _destport="${dest##*:}"
__oneway=false __oneway=$_oneway
case $_destport in case $_destport in
# we only do one-way killtcp for CIFS # we only do one-way killtcp for CIFS
139|445) __oneway=true ;; 139|445) __oneway=true ;;
@ -633,40 +639,9 @@ kill_tcp_connections() {
################################################################## ##################################################################
# kill off the local end for any TCP connections with the given IP # kill off the local end for any TCP connections with the given IP
################################################################## ##################################################################
kill_tcp_connections_local_only() { kill_tcp_connections_local_only()
_IP="$1" {
_failed=0 kill_tcp_connections "$1" "oneway"
_killcount=0
connfile="$CTDB_VARDIR/state/connections.$_IP"
mkdir -p "${connfile%/*}" # dirname
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
echo "Killing TCP connection $src $dest"
ctdb killtcp $src $dest >/dev/null 2>&1 || _failed=1
_killcount=`expr $_killcount + 1`
done < $connfile
rm -f $connfile
[ $_failed = 0 ] || {
echo "Failed to send killtcp control"
return;
}
[ $_killcount -gt 0 ] || {
return;
}
_count=0
while netstat -tn |egrep "^tcp.*[[:space:]]+$_IP:.*ESTABLISHED" > /dev/null; do
sleep 1
_count=`expr $_count + 1`
[ $_count -gt 3 ] && {
echo "Timed out killing tcp connections for IP $_IP"
return;
}
done
echo "killed $_killcount TCP connections to released IP $_IP"
} }
################################################################## ##################################################################