Configured LVS-NAT with reference to RealServer as LVS Client as per
section 12.2. in HOWTO.
Followed Julian's solution for one Network LVS-NAT. Able to connect from
one RS1 to other RS2 but not from RS1 to the same RS1 through VIP.
Configuration is as:
Load Balancer has 2 NICs one is connected to external network (VIP) and
the other to the internal network to which Real Server 1 & 2 is
connected.
The gateway for Real server 1 and 2 are configured to be the Load
Balancer's internal network.
Virtual Service Configuration:
LoadBalancer VIP:80 rr Weight
RealServer1 RS1:80 1
RealServer2 RS2:80 1
The internal routing in RealServer is removed and
netstat -r shows
link-local * 255.255.0.0 U 0 0 0
eth0
default director 0.0.0.0 UG 0 0 0
eth0
Testing scenario:
When external client is accessing VIP:80 it works perfectly. First it is
routed to RS1 and then to RS2 and again to RS1 ....
>From RS1 -
Trying to access http://VIP:80 and tcpdump is used for debugging
1. When VIP routes the call to RS2:80, RS1 is getting ack and
works fine.
2. When VIP routes the call to RS1:80 no ack signal is received
and keeps sending the request.
tcpdump in LoadBalancer at this stage:
RS1->VIP
RS1->RS1
RS1->VIP
RS1->RS1
and this goes on...
Is anything needs to be done apart from these setup?
Thanks & Regards,
Chithra.S
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