Loadbalanced High-Availability Webserver Cluster

Hello,

I setup a loadbalanced high-availability webserver cluster following How To Set Up A Loadbalanced High-Availability Apache Cluster from this site. Everything works great.

Now I'm planning to set up the same but currently the nodes are still installed on Windows operating system. The webservers are all Tomcat servers. I have the loadbalancing and high availability setup on two nodes, working great. But when I try to connect to a website on one of the virtual IP's then of course I get an error since the nodes (Windows/Tomcat) are not listening on the virtual IP.

Can someone indicate how to set up the NIC on Windows to listen on the virtual IP's? In the future all those Windows servers will be replaced by Linux but for now I'd like to get this up and running as is. It would surely add value to our production environment.

All help is greatly appreciated.

Kind regards,

Eric

 

That's a good question. To be honest, I have no idea...

 

Hi Falko,

We got it working. If you know how to do it, it's a piece of cake. Maybe a good thing to add it to your HowTo for those users who have to work in a mixed environment.

Using the Add Hardware wizard, select Yes to indicate you have already connected the hardware, choose Add new hardware device at bottom of list, select the Advanced option, select Network interfaces, select Microsoft on the left and Microsoft Loopback adapter on the right. Voila, next configure the virtual IP on the loopback adapter. This instruction worked for us on Windows 2003 server.

Kind regards,

Eric

 

need help related to ultramonkey high availability

hey guys i have done almost complete work and all tests went fine but the only problem which i am facing is in ldirectord.cf file ..........................my request is not forwarding toward the real server......................and i am sure that my load balancers are working fine.

if anybody knows about the problem plz help me .........

 

Any errors in your logs?

 

hey falko i am new in linux............

abt which logs error u r asking????? of real server logs or load balancers logs?????

 

The load balancer logs.

 

hey my ldirectord.log file is displaying these kind of commands

system(/sbin/ipvsadm -e -t 192.168.1.197:80 -r 192.168.1.90:80 -g -w 1) failed: No child processes
Restored real server: 192.168.1.90:80 (192.168.1.197:80) (weight set to 1)
system(/sbin/ipvsadm -d -t 192.168.1.197:80 -r 127.0.0.1:80) failed: No child processes
Deleted fallback server: 127.0.0.1:80 (192.168.1.197:80)
system(/sbin/ipvsadm -e -t 192.168.1.197:80 -r 192.168.1.90:80 -g -w 0) failed: No child processes
Quiescent real server: 192.168.1.90:80 (192.168.1.197:80) (weight set to 0)
system(/sbin/ipvsadm -a -t 192.168.1.197:80 -r 127.0.0.1:80 -g -w 1) failed: No child processes
Added fallback server: 127.0.0.1:80 (192.168.1.197:80) (weight set to 1)

then again repetetion of same commands


plz help me

 

falko i am using 1 real server do u think that it might be creating problem that i am not using 2 or more than 2 real servers????????

 

hey falko my ldirectord.cf file contain these commands

checktimeout=10
checkinterval=2
autoreload=no
fallback=127.0.0.1:80
quiescent=yes
logfile="/var/log/ldirectord.log"
virtual=192.168.1.90:80
fallback=127.0.0.1:80
real=192.168.1.90:80 gate
service=http
request="index.html"
receive="It works!"
scheduler=rr
persistent=600
protocol=tcp
checktype=negotiate

 

Are you using virtual machines?

 

yeh falko me using virtual machines for load balancers .............i have installed 2 ubuntu operating systems to make them load balancers...

do u think that virtual machines are creating problem????????

 

I don't think so... but - what virtualization technique do you use?

 

plz plz plz help me

falko can u plz tell me that what configuration should i need in our real servers??????????