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Hi,
I am quite new to LVS and I wanted to understand it from the basics. So I set
up a LVS director according to the mini howto, NAT manual example
http://www.austintek.com/LVS/LVS-HOWTO/mini-HOWTO/LVS-mini-HOWTO.html#example_LVS-NAT
for tests I only used one real server.
ipvsadm look like:
xen01:~# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP xen01:telnet rr
-> 192.168.200.16:telnet Masq 1 1 0
When I telnet from a client to the virtual server address I see:
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Connected to 192.168.188.101.
Escape character is '^]'.
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But no login line. The same with HTTP protocol. No Application data are
displayed in the client.
If I reconfigure my director as a plain router eveything works smooth. I can
log into the real server with telnet, at least I see a login line.
When i tcpdump on the real server and the client I do see no difference in
number and contents of the packets on both machines.
When the connection hangs I see a lot of
Server:23 -> Client:3796 P 1:13(12) ack 25 win 362 <nop,nop,timestamp
21277911 3009388219>
but no packet back from the client.
It seems that something very strange happens. Perhaps anybody gor an idea?
Where should I search further?
I use debian etch. Director and real server and virtual xen virtual machines.
Client is a real machine.
ipvsadm version 1.24+1.21-1.4
--
Dr. Michael Schwartzkopff
MultiNET Services GmbH
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Skype: misch42
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