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Hello,
I'm a linux noob, but decent at networking, and experience with commercial
load balancing techniques (Alteon, BigIP) -- I was able to install it into
the kernel, and load balance http as a test without much fuss. It runs very
nicely.
I'm trying to balance 2 MSSQL Servers over port 1433 through LVS. I saw a
thread that indicated it could be done, and I wanted to try it. I can't get
the login handshake to work using isqlw as a client. Can some of the gurus
here tell me if this tcpdump implies that the packets are at least being
passed correctly?
-----
192.168.0.1 is the CIP
192.168.0.15 is the VIP
10.168.100.1 is the DIP
10.168.100.2 is the RIP
17:22:08.883012 192.168.0.1.4129 > 192.168.0.15.1433: S
1780830537:1780830537(0) win 16384 <mss 1460,nop,nop,sackOK> (DF)
17:22:08.883196 192.168.0.1.4129 > 10.168.100.2.1433: S
1780830537:1780830537(0) win 16384 <mss 1460,nop,nop,sackOK> (DF)
17:22:08.883818 10.168.100.2.1433 > 192.168.0.1.4129: R 0:0(0) ack
1780830538 win 0
17:22:08.883937 192.168.0.15.1433 > 192.168.0.1.4129: R 0:0(0) ack
1780830538 win 0
17:22:09.367591 192.168.0.1.4129 > 192.168.0.15.1433: S
1780830537:1780830537(0) win 16384 <mss 1460,nop,nop,sackOK> (DF)
17:22:09.367692 192.168.0.1.4129 > 10.168.100.2.1433: S
1780830537:1780830537(0) win 16384 <mss 1460,nop,nop,sackOK> (DF)
17:22:09.367874 10.168.100.2.1433 > 192.168.0.1.4129: R 0:0(0) ack 1 win 0
17:22:09.367949 192.168.0.15.1433 > 192.168.0.1.4129: R 0:0(0) ack 1 win 0
17:22:09.914429 192.168.0.1.4129 > 192.168.0.15.1433: S
1780830537:1780830537(0) win 16384 <mss 1460,nop,nop,sackOK> (DF)
17:22:09.914507 192.168.0.1.4129 > 10.168.100.2.1433: S
1780830537:1780830537(0) win 16384 <mss 1460,nop,nop,sackOK> (DF)
17:22:09.914720 10.168.100.2.1433 > 192.168.0.1.4129: R 0:0(0) ack 1 win 0
17:22:09.914789 192.168.0.15.1433 > 192.168.0.1.4129: R 0:0(0) ack 1 win 0
isqlw tries the above sequence 5 times with a different source port before
giving up.
Any help confirming these packets would be greatly appreciated.
Thanks!
- Mike
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