Re: [lvs-users] https slow using LVS-NAT

To: Julian Anastasov <ja@xxxxxx>
Subject: Re: [lvs-users] https slow using LVS-NAT
Cc: " users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
From: Dirk Bonenkamp - Bean IT <dirk@xxxxxxxxxx>
Date: Wed, 20 Oct 2010 20:44:30 +0200
On Tue, 2010-10-19 at 23:28 +0300, Julian Anastasov wrote:

> On Tue, 19 Oct 2010, Dirk Bonenkamp - Bean IT wrote:
> >>         Direct on RS       Director        Online
> >> http    0,025 s            0,06 s          0,2 s
> >> https   0,7 s              4,7 s           2,8 s
> >>
> >> Looks to me like https through the LVS director is too slow, and I
> >> probably misconfigured something... Hope this gives the gurus some more
> >> insight.
>       Did you checked if it is DNS problem? If web server
> is configured to use DNS but the DNS server refuses to serve
> clients from internal IP addresses. In any case, tcpdump
> session on real server can show at which step the delay
> happens. strace output can clearly show the problem.

Apache was configured not to use DNS. If it would have used DNS this
would also have affected http speed, IMHO. Apache config was not changed
for usage with LVS-DR, except it is now listening to the VIP.



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