RE: Problem with LVS DR - 10065 Host is unreachable

["Rogers, Paul" <Paul.Rogers@xxxxxxxxxx>]

Malcolm

Once again thanks for your reply.

>Put a simple client on the same segment as the real servers & LVS,
>NB you should be able to ping the VIP from this client
>install mozilla, don't configure proxy OR default gateway
>try to access the VIP directly using http://x.x.x.x

I think I probably over complicated matters previously.  The above is what I am doing.  The client is on the same physical network as both the directors and the realservers. I cannot ping either of the RIP's either from the client or the director.  This must be where the problem lies I think.  If I run the run the mini-rc.lvs_dr-realserver script one statement at a time, I am unable to ping the real servers after executing the line "/sbin/ifconfig lo:203 10.80.18.203 broadcast 10.80.18.203 netmask 255.255.248.0 up".  The whole script is shown below and has been copied from the mini how to.

I assume that this is incorrect, but don't know what I'm doing wrong. Any ideas?

>try to access the VIP directly using http://x.x.x.x

If I try the above I then get the 10065 Host is unreachable error.

>If that doesn't work post the output of IPVSADM -L

the output after refreshing the page is as follows:

IP Virtual Server version 1.0.6 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.80.18.203:http rr
  -> edm_bfhxx_wb001:http         Route   1      0          1        
  -> edm_bfhxx_wb002:http         Route   1      0          1        

So I assume the request is reaching the director but can't be forwarded on because the RIP's have disappeared.  Any ideas?

Many thanks

Paul
 
#!/bin/bash
#----------mini-rc.lvs_dr-realserver------------------
#installing default gw 10.80.16.1 for vs-dr
/sbin/route add default gw 10.80.16.1
#showing routing table
/bin/netstat -rn
#checking if DEFAULT_GW 10.80.18.16.1 is reachable
ping -c 1 10.80.16.1

#set_realserver_ip_forwarding to OFF (1 on, 0 off).
echo "0" >/proc/sys/net/ipv4/ip_forward
cat       /proc/sys/net/ipv4/ip_forward

#looking for DIP 10.80.18.202
ping -c 1 10.80.18.202

#looking for VIP (will be on director)
ping -c 1 10.80.18.203

#install_realserver_vip
/sbin/ifconfig lo:203 10.80.18.203 broadcast 10.80.18.203 netmask 255.255.248.0 up
#ifconfig output
/sbin/ifconfig lo:203
#installing route for VIP 10.80.18.203 on device lo:203
/sbin/route add -host 10.80.18.203 dev lo:203
#listing routing info for VIP 10.80.18.203
/bin/netstat -rn

#hiding interface lo:203, will not arp
echo "1" >/proc/sys/net/ipv4/conf/all/hidden
cat       /proc/sys/net/ipv4/conf/all/hidden
echo "1" >/proc/sys/net/ipv4/conf/lo/hidden
cat       /proc/sys/net/ipv4/conf/lo/hidden

#----------mini-rc.lvs_dr-realserver------------------

-----Original Message-----
From: Malcolm Turnbull [mailto:Malcolm.Turnbull@xxxxxxxxxxxx]
Sent: 18 December 2002 13:16
To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Problem with LVS DR - 10065 Host is unreachable

Quick Points :

The loadbalancer can NOT access the VIP
The real servers may access their own copy of the VIP but NOT the real
one on the loadbalancer.

Put a simple client on the same segment as the real servers & LVS,
NB you should be able to ping the VIP from this client
install mozilla, don't configure proxy OR default gateway
try to access the VIP directly using http://x.x.x.x

If that doesn't work post the output of IPVSADM -L

What OS are the real servers ?

--

Regards,

Malcolm Turnbull.

Crocus.co.uk Ltd
01344 629629
http://www.crocus.co.uk/

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