Hello:
I have a load balancer configured with ldirectord.
I have two web servers configured to serve http.
I want to keep connections persistent to a web server
until that server dies. If it dies, I want connections
to go to the other web server.
In ldirectord.cf, I set quiescent=no in the global directives
and persistent=15000 in my virtual service.
I also issued these commands on my load balancer:
echo 1 > /proc/sys/net/ipv4/vs/expire_quiescent_template
echo 1 > /proc/sys/net/ipv4/vs/expire_nodest_conn
It works correctly to keep connections persistent to
a web server, but it is not switching users to a
live server when it fails.
Here is what I did to test it:
I have both web servers up and running.
ipvsadm -L -n on the load balancer shows that:
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 204.61.221.44:80 wlc persistent 15000
-> 204.61.221.39:80 Route 1 1 0
-> 204.61.221.35:80 Route 1 0 0
Now, I can visit the virtual IP 204.61.221.44 in a web brower
and I get a page from the 204.61.221.39 web server.
If I then shut down the 204.61.221.39 web server, ipvsadm
shows me it is no longer using it:
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 204.61.221.44:80 wlc persistent 15000
-> 204.61.221.35:80 Route 1 0 0
But, if I do a reload on the web brower, I get a connection reset.
I can go directly to 204.61.221.35 and it works fine.
How do I fix this?
Thanks,
Neil
--
Neil Aggarwal, (281)846-8957, http://UnmeteredVPS.net/centos
Virtual private server with CentOS 5.5 preinstalled
Unmetered bandwidth = no overage charges
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