[lvs-users] LVS and Nat question

xavier pajona xavierpajona at gmail.com
Fri Nov 9 08:44:11 GMT 2012


Hello Gary,

Could you please type
ipvsadm
on the piranha server and give me the output ?
Also the output of
ps -ef | grep nanny

With those informations I might be able to help.

Best regards,

Xavier


On Fri, Nov 9, 2012 at 9:29 AM, <gary.gardner at brokensoftware.com> wrote:

> Ok I had to take a break from trying to configure Piranha so I could work
> on other things. But now I am back to it.
>
> Ok here's the problem.  The Piranha is successfully pinging the real
> servers and I can see that in the http logs.
>
> The Piranha side that is talking to the Internet doesn't seem to be
> answering on Port 80.  The firewall ports are open for 3636, 80 and 539.
>
> If I do a tcpdump for eth0, which is the front facing/internet side, I see
> that I am getting traffic on that interface.
>
> However, it doesn't appear that Piranha is doing anything with it.
>
> What would you like me to attempt and what dump/log/trace should I send to
> help troubleshoot?
>
> I have tried using the Direct Method and the NAT method.  It just doesn't
> seem to be listening on Port 80.
>
>  netstat -an | grep 80
> tcp        1      0 98.190.148.186:36757        174.76.227.75:80
>  CLOSE_WAIT
>
>
> >
> > On 10/26/12 1:03 AM, gary.gardner at brokensoftware.com wrote:
> >>> The VIP is an external IP that I can ping.  The real web servers are on
> >>> a
> >>> 192.168.0.xxx subnet.  The VIP machine has eth1 that is on the
> >>> 192.168.0.xxx subnet and I can see the pulse getting to those servers.
> >>> What I cannot get is anything responding on 80.  It's as if the
> >>> firewall
> >>> isn't letting traffic in or nothing is listening on 80.
> > If you run tcpdump on your real servers, do they see any port 80
> > traffic? Do they have the VIP configured on their loopback, or a
> > iptables REDIRECT rule in place to handle the traffic?
> >
> > Do you see iptables or ipvsadm counters incrementing when you are
> > connecting? Are you connecting from inside or outside network?
> >
> > _______________________________________________
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> > http://www.linuxvirtualserver.org/
> >
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> >
>
> _______________________________________________
> Please read the documentation before posting - it's available at:
> http://www.linuxvirtualserver.org/
>
> LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
> Send requests to lvs-users-request at LinuxVirtualServer.org
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