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Hi all,
I'm using ldirectord+heartbeat+lvs (Ultramonkey) to load balance a
group of web
servers.
ldirecotrd is 1.77.2.32 2005/09/21
When I create a virtual entry and set the VIP port to 8081, but the
real server port to 8082, ldirectord adds two entries in the LVS
table for each real server: one for RIP:8082 with a weight of 1 and
one with RIP:8081 with a weight of zero.
This is the ldirectord.cf:
# Virtual Server for HTTP BackEnd Tomcat
virtual=xxx.xxx.xxx.xxx:8081
real=10.0.1.1:8082 masq
service=http
request="status.html"
receive="on"
scheduler=rr
#persistent=600
protocol=tcp
checktype=negotiate
After a restart of ldirectord
ipvs -L -n said:
IP Virtual Server version 1.2.0 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP xxx.xxx.xxx.xxx:8081 rr
-> 10.0.1.1:8082 Masq 1 0 0
I shutdown tomcat on real server, and
ipvs -L -n said:
IP Virtual Server version 1.2.0 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP xxx.xxx.xxx.xxx:8081 rr
-> 10.0.1.1:8081 Masq 0 0 0
As you can see, the "quiescient" server is on port 8081, not 8082
Now I start tomcat on real server:
ipvs -L -n said:
IP Virtual Server version 1.2.0 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP xxx.xxx.xxx.xxx:8081 rr
-> 10.0.1.1:8082 Masq 1 0 0
-> 10.0.1.1:8081 Masq 1 0 0
As you can see, the real server is correctly added to ldirectord, but
a fake entry is added from the quiescient server (I have another
webserver on port 8081)
usign /usr/sbin/ldirectord reload the correct config is reloaded.
I think that the problem in ldirectord script is that when a queiscent
server is added, the vip port and not the rip port is used. I'm not
very used to perl progrmming, so I don't try to fix it...
Cheers
--
-=[ SLL ]=-
http://www.isognidilivia.com
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