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On Mon, 21 May 2007, Adam Smutnicki wrote:
Hello
I'm trying to force my LVS network to work proprly, but I cannot. So I'll be
very glad for any help.
First some details about my network
Connection schema:
Client1 -- LAN -- Director -- Internet -- Real Server -- Client2
client2 is just a client of the realserver, it's not a
client of the the LVS, right?
Of course my firewall is down on Real Server,
good
and mysql is listening on 0.0.0.0 address
for security, in production, make sure it's only listening
on the VIP.
1) When i do
$mysql -u user -p -h VIP
on Client2 i can connect to mysql on VIP, but i dont see any packets camming
on tunl0 on RS
tunl0 isn't a real device. It exists only in the kernel. I
don't know if you can tcpdump on tunl0 (you used to not be
able to).
2) when i do
$mysql -u user -p -h VIP
on Client1
i see (on RS) that packets are tunneled to RS - I see packets with 2 IP
headers, then i can see packet without tuneling ip header, so with
ip.src=Client2
you mean client1?
and ip.dst=VIP, but packets are appearing on tunl0, but
connecting isn't estabilished, no ACK packets are sent.
that's a good start.
Have you looked through the list of common problems at the
end of the mini-HOWTO?
Do you understand the single writer/ many reader nature of
LVS as far as it relates to databases in an LVS. Have you
read the section in the HOWTO about building an LVS
database?
Have you set up an LVS-DR according to the mini-HOWTO? When
you've got that working, change it to LVS-Tun. Then change
telnet to mysql.
Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
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Homepage http://www.austintek.com/ It's GNU/Linux!
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