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Hello,
I am new to LVS, I am sure same quation might have been asked many times in
many different forums and I did search google and red many documents on how to
configure LVS-NAT, still I am not able to make it work. Any help would be
greatly appriciated.
I followed the link
http://www.jumpingbean.co.za/linux-cluster-load-balancing-high-availability to
configure LVS-NAT to load balance multiple web servers, just to test the basic
things I used one load balancer server and one real server and used ipvsadm to
configure these servers. With the below configuration I am not able to access
the default web page from my real server using http://lb1, when I try to access
this page it just hangs and comes back with an error "Internet Explorer cannot
display the webpage". After trying to access default web page http://lb1
ipvsadm command showing number of counts under InActConn column eventhough I am
not able to access the default web page.
My LVS-NAT Configuration details:
Load Balancer
Hostname: lb1
Public IP: 192.168.1.120
Private IP: 192.168.3.120
Real Server1
Hostname: rs1
IP Address: 192.168.3.121
Gateway: 192.168.3.120
Real Server2
Hostname: rs2
IP Address: 192.168.3.122
Gateway: 192.168.3.120
[root@lb1 ~]# ipvsadm -A -t 192.168.1.120:80 -s rr
[root@lb1 ~]# ipvsadm -a -t 192.168.1.120:80 -r 192.168.3.121:80 -m -w 1
[root@lb1 ~]# ipvsadm-save > /etc/sysconfig/ipvsadm
[root@lb1 ~]# echo 1 > /proc/sys/net/ipv4/ip_forward
[root@lb1 ~]# iptables -F
[root@lb1 ~]# /etc/init.d/ipvsadm status
ipvsadm is stopped
[root@lb1 ~]# /etc/init.d/ipvsadm start
Clearing the current IPVS table: [ OK ]
Applying IPVS configuration: [ OK ]
[root@lb1 ~]# /etc/init.d/ipvsadm status
ipvsadm dead but subsys locked
[root@lb1 ~]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP lb1.abcde.com:http rr
-> rs1.abcde.com:http Masq 1 0 0
[root@lb1 ~]# ipvsadm (after trying to access default page http://lb1)
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP lb1.abcde.com:http rr
-> rs1.abcde.com:http Masq 1 0 4
Thanks,
GV
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