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ctdb-scripts: LVS eventscript cleanups

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Stylistic changes and cleaner code.  No functional changes.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This commit is contained in:
Martin Schwenke 2016-04-07 06:11:49 +10:00 committed by Amitay Isaacs
parent 5fc9ca91d7
commit 7d522794ef
1 changed files with 37 additions and 41 deletions
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78
ctdb/config/events.d/91.lvs
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@ -16,12 +16,12 @@ if ! type ipvsadm >/dev/null 2>&1 ; then
exit 0
fi
case "$1" in
startup)
ipvsadm -D -t $CTDB_LVS_PUBLIC_IP:0 >/dev/null 2>&1
ipvsadm -D -u $CTDB_LVS_PUBLIC_IP:0 >/dev/null 2>&1
case "$1" in
startup)
ipvsadm -D -t "$CTDB_LVS_PUBLIC_IP" >/dev/null 2>&1
ipvsadm -D -u "$CTDB_LVS_PUBLIC_IP" >/dev/null 2>&1
ip addr add $CTDB_LVS_PUBLIC_IP/32 dev lo scope host
ip addr add "${CTDB_LVS_PUBLIC_IP}/32" dev lo scope host
# do not respond to ARPs that are for ip addresses with scope 'host'
set_proc_maybe sys/net/ipv4/conf/all/arp_ignore 3
@ -29,60 +29,56 @@ case "$1" in
set_proc_maybe sys/net/ipv4/conf/all/arp_announce 2
;;
shutdown)
ipvsadm -D -t $CTDB_LVS_PUBLIC_IP:0
ipvsadm -D -u $CTDB_LVS_PUBLIC_IP:0
shutdown)
ipvsadm -D -t "$CTDB_LVS_PUBLIC_IP"
ipvsadm -D -u "$CTDB_LVS_PUBLIC_IP"
# remove the ip
ip addr del $CTDB_LVS_PUBLIC_IP/32 dev lo >/dev/null 2>/dev/null
ip addr del "${CTDB_LVS_PUBLIC_IP}/32" dev lo >/dev/null 2>&1
flush_route_cache
;;
ipreallocated)
# kill off any tcp connections
ipvsadm -D -t $CTDB_LVS_PUBLIC_IP:0 >/dev/null 2>&1
ipvsadm -D -u $CTDB_LVS_PUBLIC_IP:0 >/dev/null 2>&1
ipreallocated)
# Kill connections
ipvsadm -D -t "$CTDB_LVS_PUBLIC_IP" >/dev/null 2>&1
ipvsadm -D -u "$CTDB_LVS_PUBLIC_IP" >/dev/null 2>&1
kill_tcp_connections_local_only \
"$CTDB_PUBLIC_INTERFACE" "$CTDB_LVS_PUBLIC_IP"
ctdb_get_pnn
LVSMASTER=`ctdb lvsmaster | sed -e "s/.*Node //" -e "s/ .*//"`
[ "$pnn" != "$LVSMASTER" ] && {
# we are not the lvs master so we have to
# change the ip address to have scope host so we wont respond
# to arps
ip addr del $CTDB_LVS_PUBLIC_IP/32 dev lo >/dev/null 2>/dev/null
ip addr add $CTDB_LVS_PUBLIC_IP/32 dev lo scope host >/dev/null 2>/dev/null
lvsmaster=$(ctdb lvsmaster | sed -n -e 's/Node \([0-9]*\) is LVS master/\1/p')
if [ "$pnn" != "$lvsmaster" ] ; then
# This node is not the LVS master so change the IP address
# to have scope "host" so this node won't respond to ARPs
ip addr del "${CTDB_LVS_PUBLIC_IP}/32" dev lo >/dev/null 2>&1
ip addr add "${CTDB_LVS_PUBLIC_IP}/32" dev lo scope host
exit 0
}
fi
# change the scope so we start responding to arps
ip addr del $CTDB_LVS_PUBLIC_IP/32 dev lo >/dev/null 2>/dev/null
ip addr add $CTDB_LVS_PUBLIC_IP/32 dev lo >/dev/null 2>/dev/null
# Change the scope so this node starts responding to ARPs
ip addr del "${CTDB_LVS_PUBLIC_IP}/32" dev lo >/dev/null 2>&1
ip addr add "${CTDB_LVS_PUBLIC_IP}/32" dev lo >/dev/null 2>&1
ipvsadm -A -t $CTDB_LVS_PUBLIC_IP:0 -p 1999999 -s lc
ipvsadm -A -u $CTDB_LVS_PUBLIC_IP:0 -p 1999999 -s lc
ipvsadm -A -t "$CTDB_LVS_PUBLIC_IP" -p 1999999 -s lc
ipvsadm -A -u "$CTDB_LVS_PUBLIC_IP" -p 1999999 -s lc
# add all nodes (except ourselves) to the lvs config
ctdb lvs | egrep -v "^${pnn}:" | sed -e "s/.*://" | while read IP; do
ipvsadm -a -t $CTDB_LVS_PUBLIC_IP:0 -r $IP -g
ipvsadm -a -u $CTDB_LVS_PUBLIC_IP:0 -r $IP -g
# Add all nodes (except this node) as LVS servers
ctdb lvs |
awk -F: -v pnn="$pnn" '$1 != pnn { print $2 }' |
while read ip ; do
ipvsadm -a -t "$CTDB_LVS_PUBLIC_IP" -r $ip -g
ipvsadm -a -u "$CTDB_LVS_PUBLIC_IP" -r $ip -g
done
# and add the localhost too
ipvsadm -a -t $CTDB_LVS_PUBLIC_IP:0 -r 127.0.0.1
ipvsadm -a -u $CTDB_LVS_PUBLIC_IP:0 -r 127.0.0.1
# send out a gratious arp so our peers will update their arp tables
ctdb gratiousarp $CTDB_LVS_PUBLIC_IP $CTDB_PUBLIC_INTERFACE >/dev/null 2>/dev/null
# Add localhost too...
ipvsadm -a -t "$CTDB_LVS_PUBLIC_IP" -r 127.0.0.1
ipvsadm -a -u "$CTDB_LVS_PUBLIC_IP" -r 127.0.0.1
ctdb gratiousarp \
"$CTDB_LVS_PUBLIC_IP" "$CTDB_PUBLIC_INTERFACE" >/dev/null 2>&1
flush_route_cache
;;
*)
ctdb_standard_event_handler "$@"
;;
esac
exit 0