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Hi! I'm new here. I'm trying to build a lvs cluster for testing purposes. If
it works fine I'll try to set up a real one, but by the moment I cannot
aspire to good boxes. So there's my configuration:
2 directors:
director server 10.2.1.43(Debian. VIP: 10.2.1.41)
backup server 10.2.1.67(Debian. VIP: 10.2.1.41)
using heartbeat (linked by only one way 10.2.1.0 by the moment because
I'm
just testing).
2 real servers:
-realserver1: 10.2.1.38/255.255.254.0 (suse 9.2)
-realserver2: 10.5.1.61/255.255.254.0 (fedora core)
both with apache servers.
I'm using ldirectord on both directors with this configuration file
in /etc/ha.d/conf/ldirectordconfig.conf:
checktimeout=20
checkinterval=5
autoreload=yes
quiescent=no
logfile="info"
virtual=10.2.1.41:80
real=10.5.1.61:80 gate 1 ".healthcheck.html", "OK"
real=10.2.1.38:80 gate 1 ".healthcheck.html", "OK"
service=http
checkport=80
protocol=tcp
scheduler=wrr
checktype=negotiate
fallback=127.0.0.1:80
In the real servers I run an init script like this one:
#!/bin/bash
VIP=10.2.1.41
host=`/bin/hostname`
case "$1" in
start)
# Start LVS-DR real server on this machine.
/sbin/ifconfig lo down
/sbin/ifconfig lo up
echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
/sbin/ifconfig lo:0 $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev lo:0
;;
stop)
# Stop LVS-DR real server loopback device(s).
/sbin/ifconfig lo:0 down
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
;;
status)
# Status of LVS-DR real server.
islothere=`/sbin/ifconfig lo:0 | grep $VIP`
isrothere=`netstat -rn | grep "lo:0" | grep $VIP`
if [ ! "$islothere" -o ! "isrothere" ];then
# Either the route or the lo:0 device
# not found.
echo "LVS-DR real server Stopped."
else
echo "LVS-DR Running."
fi
;;
*)
# Invalid entry.
echo "$0: Usage: $0 {start|status|stop}"
exit 1
;;
esac
OK.
The first time I make lynx 10.2.1.41, it works and I receive a
"realserver1.html" confirmating that everything is alright. But the second
time, when it's suposed to receive "realserver2.html" confirmation, I just
get a
Looking up 10.2.1.41
Making HTTP connection to 10.2.1.41
Alert!: Unable to connect to remote host.
lynx: Can't access startfile http://10.2.1.41/
Of course the next time it works find cause it's to work on a round robin
basis.
is it maybe because I'm trying to get the pages from 10.2.1.59 (the same
subnet as director and realservers??
How can I test if it's load balancing if I haven't got a switch to put the
realservers and the directors on different net?
Sure I'm asking a very easy (and stupid) question but I don't know how to
follow.
Sorry for my english (I'm spanish), and thanks in advance!
Andrés.
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