Using LVS to forward HTTP from port 80 to servers running onport 81

[Travis Melhiser]

Arg, doctored half the ip addresses but not the other half... so to make 
that last post make a bit more sense:

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  192.168.1..99:80 rr
-> 192.168.1.100:81            Masq    1      0          0
-> 192.168.1.101:81            Masq    1      0          0

-------------------------------------------------


Sorry again for the confusion.

-t


>From: "Travis Melhiser" <tmelhiser at hotmail.com>
>Reply-To: "LinuxVirtualServer.org users mailing list." 
><lvs-users at LinuxVirtualServer.org>
>To: lvs-users at LinuxVirtualServer.org
>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 at byu.edu>
>>Reply-To: "LinuxVirtualServer.org users mailing list." 
>><lvs-users at LinuxVirtualServer.org>
>>To: "LinuxVirtualServer.org users mailing list." 
>><lvs-users at linuxvirtualserver.org>
>>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
>> >
>> > _________________________________________________________________
>> > Don’t just search. Find. Check out the new MSN Search!
>> > http://search.msn.click-url.com/go/onm00200636ave/direct/01/
>> >
>> > _______________________________________________
>> > LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
>> > Send requests to lvs-users-request at LinuxVirtualServer.org
>> > or go to http://www.in-addr.de/mailman/listinfo/lvs-users
>> >
>> >
>> >
>>
>>_______________________________________________
>>LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
>>Send requests to lvs-users-request at LinuxVirtualServer.org
>>or go to http://www.in-addr.de/mailman/listinfo/lvs-users
>
>_________________________________________________________________
>Express yourself instantly with MSN Messenger! Download today - it's FREE! 
>http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>
>_______________________________________________
>LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
>Send requests to lvs-users-request at LinuxVirtualServer.org
>or go to http://www.in-addr.de/mailman/listinfo/lvs-users

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/