[Linux-cluster] LVS, not so fun today...

Thu Nov 9 20:38:09 UTC 2006

On 11/9/06, isplist at logicore.net <isplist at logicore.net> wrote:
> Hi there,
>
> > Do the ARP ping from anywhere. It might not be related at all to your
> > problem but ARP problems will cause you no end of headaches with
> > direct routing. The output should look something like this:
>
> Testing from ANY machine including one of the real web servers works but not
> from the load balancer, 192.168.1.52 (LB0);
>
> #arping 192.168.1.150
> ARPING 192.168.1.150 from 192.168.1.56 eth0
> Unicast reply from 192.168.1.150 [00:20:94:10:44:A5]  1.193ms
> Unicast reply from 192.168.1.150 [00:20:94:10:44:A5]  0.666ms
>
> > Also, from your Load Balancer, please post the output of "curl -i
> > http://192.168.1.92" and the other real server IPs you have (93 and
> > 94).
>
> They all output the same, as they should, so I'll just post the one;
>
> 192.168.1.52# curl -i http://192.168.1.92/
>
> HTTP/1.1 200 OK
> Date: Thu, 09 Nov 2006 20:17:03 GMT
> Server: Apache
> Last-Modified: Mon, 28 Aug 2006 01:03:47 GMT
> ETag: "4ef781-1679-7f8be2c0"
> Accept-Ranges: bytes
> Content-Length: 5753
> Connection: close
> Content-Type: text/html; charset=UTF-8
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
> <html>
> <head>
> <title>Companions.com</title>
> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
> </head>
>
> <body bgcolor="666699" text="ffffff" link="666699" vlink="666699"
> alink="666699">
> <table width="100%" border="0" cellpadding="0">
>   <tr>
>     <td><div align="left"><font size="6" face="Verdana, Arial, Helvetica,
> sans-serif"><strong>Who
>         Are <font color="#99FF33">You</font> Looking
> For?</strong></font></div></td>
>     <td> </td>
>     <td> </td>
>   </tr>
>   <tr>
>

I went back and looked at this:

eth0      Link encap:Ethernet  HWaddr 00:20:94:10:44:A5
         inet addr:192.168.1.52  Bcast:192.168.1.255  Mask:255.255.255.0
         inet6 addr: fe80::220:94ff:fe10:44a5/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:91631 errors:0 dropped:0 overruns:0 frame:0
         TX packets:8142 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:6004157 (5.7 MiB)  TX bytes:1402617 (1.3 MiB)

eth0:1    Link encap:Ethernet  HWaddr 00:20:94:10:44:A5
         inet addr:192.168.1.150  Bcast:192.168.1.150  Mask:255.255.255.255
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

and just wanted to make sure you are not setting up eth0:1 manually.
It will be added automatically by lvs. From the looks of that output
compared to what you have in your lvs config it looks like that is the
case.