create a varient of kill_tcp_connections that only kills off the local side of a...

diff --git a/config/events.d/91.lvs b/config/events.d/91.lvs
index 4860030aeab6ef0b4a10808ca2e25b4359ff7da8..2411d1e0bf634a298593423da5be5414edcf901e 100755 (executable)
--- a/config/events.d/91.lvs
+++ b/config/events.d/91.lvs
@@ -52,7 +52,7 @@ case $cmd in
        # kill off any tcp connections
        ipvsadm -D -t $CTDB_LVS_PUBLIC_IP:0
        ipvsadm -D -u $CTDB_LVS_PUBLIC_IP:0
-       kill_tcp_connections $CTDB_LVS_PUBLIC_IP
+       kill_tcp_connections_local_only $CTDB_LVS_PUBLIC_IP
 
        PNN=`ctdb pnn | sed -e "s/.*PNN://"`
        LVSMASTER=`ctdb lvsmaster | sed -e "s/.*Node //" -e "s/ .*//"`

diff --git a/config/functions b/config/functions
index 1073055f9bbf48cd25c0231f2ed96d464a46d116..2f0b01fe242883489882892c134ee247b4ba15a7 100644 (file)
--- a/config/functions
+++ b/config/functions
@@ -311,6 +311,48 @@ kill_tcp_connections() {
     echo "killed $_killcount TCP connections to released IP $_IP"
 }
 
+##################################################################
+# kill off the local end for any TCP connections with the given IP
+##################################################################
+kill_tcp_connections_local_only() {
+    _IP="$1"    
+    _failed=0
+
+    _killcount=0
+    connfile="$CTDB_BASE/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 "Killing TCP connection $srcip:$srcport $destip:$destport"
+       ctdb killtcp $srcip:$srcport $destip:$destport >/dev/null 2>&1 || _failed=1
+       _killcount=`expr $_killcount + 1`
+     done < $connfile
+    /bin/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"
+}
+
 ########################################################
 # start/stop the nfs service on different platforms
 ########################################################