Linux load balancer ping redirect to other interface Post: 302775291

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Special Forums IP Networking Linux load balancer ping redirect to other interface Post 302775291 by hadinetcat on Monday 4th of March 2013 01:52:55 PM

03-04-2013

Registered User

Linux load balancer ping redirect to other interface

Im configuring centos with load balance with ip route and ip rule

Code:

Eth0 192.168.1.5
Eth1 192.168.5.128
[root@host1 testscripts]# ip route
192.168.5.0/24 dev eth1  scope link  src 192.168.5.128
192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.5
169.254.0.0/16 dev eth1  scope link 
[root@host1 testscripts]# ip route show table wan2
default via 192.168.5.2 dev eth1  src 192.168.5.128
[root@host1 testscripts]# ip route show table wan1
default via 192.168.1.1 dev eth0  src 192.168.1.5
[root@host1 testscripts]# ip rule show
0:      from all lookup 255
32762:  from 192.168.5.128 lookup wan2
32763:  from all to 192.168.1.5 lookup wan1
32765:  from 192.168.1.5 lookup wan1
32766:  from all lookup main
32767:  from all lookup default

But the problem here when I use

Code:

ping –I 192.168.1.5 www.google.com

The ping it goes to the second interface,
If the second interface is down its stick there..
What to do to fix this issue

Last edited by jim mcnamara; 03-04-2013 at 04:31 PM..

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fair

fair(7) 					       BSD Miscellaneous Information Manual						   fair(7)

NAME

     fair -- simple TCP load balancing service

DESCRIPTION

     fair is a load balancer for TCP connections.  It can be used to distribute incoming connections for SMTP, HTTP or any other TCP service to
     multiple hosts, distributing the load as evenly as possible.

     fair consists of two daemons.  The carrousel is the front-end; it keeps track of back-end hosts and their status, and forwards incoming con-
     nections to the back-ends in such a way that the load is distributed fairly.  The transponder runs on the back-end hosts, it registers with
     the carrousel and sends it status information.  The TCP connections forwarded by the carrousel are not sent to the transponder daemons but
     are sent directly to the desired service running on the back-end host. Both daemons share a single configuration file.

EXAMPLES

     The following example shows how to set up fair to service HTTP connections and to distribute them over back-ends in the 192.168.1.0/24 sub-
     net.

     The configuration file /etc/fair.conf contains the following:

	   WorkerService = http
	   BalancerService = http
	   AllowUDP = ^192.168.1.[0-9]+$

     On www.example.com, the front-end server receiving the incoming HTTP connections, just run:

	   carrousel

     On each of the back-ends run:

	   transponder www.example.com

SEE ALSO

     carrousel(8), transponder(8), fair.conf(5)

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