Mailing List Archive: [lvs-users] fallback server getting conn. refused

Hi,

On a production server with a HUGE firewall list (thanks, Shorewall!) we
have LVS configured and up & running. All works well, except when all
realservers are down and ldirectord switches to fallback:

Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 1.2.3.4:80 wlc
-> 127.0.0.1:80 Route 1 0 59
-> 172.20.1.49:80 Masq 0 0 0

First of all, I remembered that when switching to fallback, the forward
method said 'Local' in the past, and now it displays Route. But okay,
perhaps this is the new syntax.

The problem is that we're getting connection refused messages.
Telnetting on the director to localhost:80 works fine though.

Anyone with some advice?

thanks,

LÃ©on

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Hello,

On Fri, 22 Nov 2013, L.S. Keijser wrote:

> Hi,
>
> On a production server with a HUGE firewall list (thanks, Shorewall!) we
> have LVS configured and up & running. All works well, except when all
> realservers are down and ldirectord switches to fallback:
>
> Prot LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> TCP 1.2.3.4:80 wlc
> -> 127.0.0.1:80 Route 1 0 59
> -> 172.20.1.49:80 Masq 0 0 0
>
>
> First of all, I remembered that when switching to fallback, the forward
> method said 'Local' in the past, and now it displays Route. But okay,
> perhaps this is the new syntax.
>
> The problem is that we're getting connection refused messages.
> Telnetting on the director to localhost:80 works fine though.
>
> Anyone with some advice?

The Route mode preserves the packet addresses,
so you need a local 1.2.3.4:80 listener, the test with
localhost:80 is not adequate. IIRC, the Local mode worked
in the same way.

Regards

--
Julian Anastasov <ja@ssi.bg>

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