Re: Help needed to configure SSH load balancing with LVS

["J.Libak@xxxxxxxxxx" <J.Libak@xxxxxxxxxx>]

XenResu wrote:
> I'm having trouble configuring SSH load balancing with LVS.
>
> I have the Director and a Real Server on the same network.
> The Director uses an ip alias eth0:0 as the VIP
>
> > From the outside world, ssh to Director, VIP and the Real Server works
> fine if ipvsadm isn't running.
> Once I start the ipvsadm service, ssh to VIP times out.
>
> # cat /etc/sysconfig/ipvsadm
> -A -t VIP:ssh -s rr
> -a -t VIP:ssh -r RealServer:ssh -w 1
>
> I'm stumped.  What am I missing?
>
> -Dave
If something like this happens, always try to run tcp dump on both 
servers and try telnet and see where the packets are going.
What I can tell you is read the LVS documentation twice (on the main lvs 
site,and on ultramonkey too, read about the problems you might 
encounter). LVS is very well documented (in comparison to heartbeat 2.0 
which is a pain). If you understand what you are doing you won't waste 
time with trying to solve problems you run into because you don't 
understand the principle.
I think ipvsadm "service" only reads /etc/sysconfig/ipvsadm (or 
/etc/ipvsadm) and sets whats in there. I don't use the "service" I use 
ldirectord to set up ipvs "virtual services" or ipvsadm directly if 
something doesn't work.
Jaro