lvs-users Digest, Vol 49, Issue 22

[Evald Ibrahimi]

thanks for the reply,
i have read all docs and how-to, but found nothing.
Searching on the net i have found this interesting doc on ultramonkey 
project web-site
http://www.ultramonkey.org/papers/lvs_tutorial/html/ (look at the LVS - 
Direct routing example)

As i wrote on my prevoius messagge, the problem was not on the director 
but on the real server
the solution is that i had to give this comand to the real server:

       ifconfig lo:0 192.168.1.15 netmask 255.255.255.255 up

intead of:

       ifconfig lo:0 192.168.1.15 up

but i dont understand  why it is working now ?
Could somebody explain me this ?

Thanks,
Regards



 @Alparslan OZTURK
------------------------
i have to give this commands

echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce
echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

otherwise the lo:o device will respond with its mac address when recieve 
an arp broadcast(and it will be a mess, beacuse also the director 
respond to the arp broadcast)
from the client.

 
Regards.



lvs-users-request at LinuxVirtualServer.org ha scritto:
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> ------------------------------------------------------------------------
>
> Today's Topics:
>
>    1. RE: Problem with virtual server on (vmware) virtual machines
>       (Alparslan OZTURK)
>    2. RE: Problem with virtual server on (vmware) virtual machines
>       (Joseph Mack NA3T)
>    3. super slow speeds from director (Matthew)
>   
>
> ------------------------------------------------------------------------
>
> Oggetto:
> RE: Problem with virtual server on (vmware) virtual machines
> Da:
> "Alparslan OZTURK" <aozturk at e-tugra.com>
> Data:
> Tue, 20 Feb 2007 13:42:31 +0200
> A:
> "LinuxVirtualServer.org users mailing list." 
> <lvs-users at LinuxVirtualServer.org>
>
> A:
> "LinuxVirtualServer.org users mailing list." 
> <lvs-users at LinuxVirtualServer.org>
>
>
> I think you don't need these commands. Because vmware can emulate MAC
> adress.
>
> echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore
> echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce
> echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
> echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
>
>
>  
>
> -----Original Message-----
> From: lvs-users-bounces+aozturk=e-tugra.com at linuxvirtualserver.org
> [mailto:lvs-users-bounces+aozturk=e-tugra.com at linuxvirtualserver.org] On
> Behalf Of Evald Ibrahimi
> Sent: Friday, February 16, 2007 9:28 PM
> To: lvs-users at LinuxVirtualServer.org
> Subject: Problem with virtual server on (vmware) virtual machines
>
> Hi Everybody !
> need some help here,
> I'm trying to test a simple virtual server. This is the topology of my
> net:
>
> I have 2 virtual machines(both are ubuntu 6.10) running on vmware.
> the first is the director with IP 192.168.1.7 on eth0, the second is the
> real server with IP 192.168.1.9 on eth0.
>
> i want to test a web service running on a VIP 192.168.1.15.
> All the nic of the machines are on the same subnet so i have to use the
> "Direct routing" and also to resolve the problem of arp when all the
> machines are on the same subnet.
> here are the command that i have used:
>
> on the director:
> ---------------
>
> ifconfig eth0 192.168.1.7 up
> ifconfig eth0:0 192.168.1.15 up
> ipvsadm -A -t 192.168.1.15:80
> ipvsadm -a -t 192.168.1.15:80 -r 192.168.1.9 -g echo 1 >
> /proc/sys/net/ipv4/ip_forward
>
> on the real server:
> ------------------
>
> echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore
> echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce
> echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
> echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
>
> ifconfig lo:0 192.168.1.15 up
>
> the conclusion is that it is not working, i have used ethereal to
> understand what is going on the network and i have understood that the
> director is working fine but the problem is on the real server because
> it recieve the request for the home page but doesnt reply.
> somebody could help me to understand why it's not working ??
>
> Regards,
> Evald
>
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> ------------------------------------------------------------------------
>
> Oggetto:
> RE: Problem with virtual server on (vmware) virtual machines
> Da:
> Joseph Mack NA3T <jmack at wm7d.net>
> Data:
> Tue, 20 Feb 2007 05:05:53 -0800 (PST)
> A:
> "LinuxVirtualServer.org users mailing list." 
> <lvs-users at LinuxVirtualServer.org>
>
> A:
> "LinuxVirtualServer.org users mailing list." 
> <lvs-users at LinuxVirtualServer.org>
>
>
> On Tue, 20 Feb 2007, Alparslan OZTURK wrote:
>
>> the conclusion is that it is not working, i have used ethereal to
>> understand what is going on the network and i have understood that the
>> director is working fine but the problem is on the real server because
>> it recieve the request for the home page but doesnt reply.
>> somebody could help me to understand why it's not working ??
>
> have you read the mini-HOWTO? The realservers not replying in LVS-DR 
> is a standard symptom. Also give us the output of `ipvsdam`
>
> Joe
>
>
> ------------------------------------------------------------------------