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that worked, thanks for the help.
i have one more question, what if i were to create a failover between the
two nodes, how to manage the virtual IP in that case
On Fri, Aug 29, 2008 at 3:57 PM, Thomas Pedoussaut <thomas@xxxxxxxxxxxxxx>wrote:
> Vishwanath T. K. wrote:
> > Hi All,
> >
> > I have configured the LVS in local node. The configuration included two
> > nodes (director+real server)
> >
> > VIP: 192.168.2.200
> >
> > Node configuration:
> >
> > node1:
> > ifconfig lo:0 192.168.2.200 netmask 255.255.255.255 broadcast
> > 192.168.2.200 up
> > eth0: 192.168.2.50/24 gateway 192.168.2.254, dev eth0
> > HTTP service listening on all interfaces.
> >
> > IPVSADM:
> > ipvsadm -A -t 192.168.2.200:80 -s rr
> > ipvsadm -a -t 192.168.2.200:80 -r 192.168.2.50:80
> > ipvsadm -a -t 192.168.2.200:80 -r 192.168.2.51:80 -g
> >
> >
> > node2:
> > eth0: 192.168.2.51/24 gateway 192.168.2.254, dev eth0
> > HTTP service listening on all interfaces.
> >
> > Client IP: 192.168.2.1
> >
> > Now the problem i am having
> >
> > When i access 192.168.2.200 from the client, and when the service
> request is
> > sent to the node2 nothing happens, while then the service request is
> > forwarded to 192.168.2.50 (real IP on node1) the web pages are served.
> >
> > IPVSADM - connection output
> >
> > [root@node1 ~]# ipvsadm -lnc
> > IPVS connection entries
> > pro expire state source virtual destination
> > TCP 01:57 FIN_WAIT 192.168.2.1:50307 192.168.2.200:80
> 192.168.2.50:80
> > TCP 00:52 SYN_RECV 192.168.2.1:50294 192.168.2.200:80
> 192.168.2.51:80
> >
> > Why the second node is not serving any request ? Is there
> > setup/configuration left on the node2 ?
> >
> From your config I take you are using direct routing.
> Your node 2 doesn't know it has to handle traffic for the VIP, so it
> silently drops packets arriving.
> You need to configure the VIP as an alias of lo on that node as well (
> and play with the arp config to avoid announcing that IP on the network.
> Add that in /etc/sysctl.conf
> net.ipv4.conf.eth0.arp_ignore = 1
> net.ipv4.conf.eth0.arp_announce = 2
> net.ipv4.conf.all.arp_ignore = 1
> net.ipv4.conf.all.arp_announce = 2
>
> Reading the doc http://www.linuxvirtualserver.org/VS-DRouting.html helps
> a lot as well.
>
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