From: "Travis Melhiser" <tmelhiser@xxxxxxxxxxx>
Reply-To: "LinuxVirtualServer.org users mailing list."
<lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Using LVS to forward HTTP from port 80 to servers running
onport 81
Date: Thu, 13 Jul 2006 17:46:27 -0400
I'm using ldirectord here as well.
Our ldirectord.conf file looks like this:
-------------------------------------------
checktimeout=10
checkinterval=2
autoreload=yes
logfile="local0"
quiescent=yes
virtual=192.168.1.99:80
real=192.168.1.100:81 masq
real=192.168.1.101:81 masq
fallback=127.0.0.1:80 gate
request="/heartbeat/index.html"
receive="Alive"
scheduler=rr
service=http
protocol=tcp
checktype=negotiate
-------------------------------------------------
Output from ipvsadm after ldirector is started:
ipvsadm -L -n
-------------------------------------------------
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 147.26.119.99:80 rr
-> 147.26.119.215:81 Masq 1 0 0
-> 147.26.119.164:81 Masq 1 0 0
-------------------------------------------------
However, I cannot reach the web server via the VIP.
-Travis
From: Lloyd Brown <somewhere_or_other@xxxxxxx>
Reply-To: "LinuxVirtualServer.org users mailing list."
<lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
To: "LinuxVirtualServer.org users mailing list."
<lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Using LVS to forward HTTP from port 80 to servers running on
port 81
Date: Thu, 13 Jul 2006 15:33:00 -0600
I think you can just specify the source and destination ports when you
add the services; iptables isn't really necessary. So, basically in the
man page for ipvsadm, where it says "service-address", you'd put your
external hostname/IP address followed by a port, something like this:
external-server:80
Similarly, when you specify the "server-address" (meaning the
realserver), you just append a ":81" to the hostname or IP.
So, to associate "server1" on port 81 as a realserver under "external"
on port 80, using LVS-NAT with a weight of 1, you'd try something like
this (someone should check my syntax here):
"ipvsadm -a -t external:80 -r server1:81 -m -w 1"
I'm not sure if this will be helpful, but we use ldirectord at my work,
and so your configuration would be something like this, in this
situation (assuming LVS-NAT & weight of 1 again):
...
virtual=external:80
real=server1:81 masq 1
real=server2:81 masq 1
real=server3:81 masq 1
... (etc)
Hope this helps,
Lloyd Brown
Travis Melhiser wrote:
> I'm pretty new to LVS and can't seem to find the right configuration or
> the right documentation to get my environment set up.
>
> I would like to have requests come to the LVS server on port 80 an then
> have the LVS server forward these requests to the machines in the
> cluster running the web servers on port 81.
>
> Does anyone have an example of how to set this up?
>
> Thanks in advance,
>
> -T
>
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