|
Hello,
I am using the following setup:
- loadbalancer: fedora 12 - lvs with ldirector , vip 194.145.200.87
- server 1: real server : centos 5.4 - 194.145.200.17
- server 2: real server : centos 5.4 - 194.145.200.171
ldirector.cf:
checktimeout=3
checkinterval=1
autoreload=yes
logfile="/var/log/ldirectord.log"
quiescent=no
virtual=194.145.200.87:25
fallback=127.0.0.1:25
real=194.145.200.17:25 gate
real=194.145.200.171:25 gate
service=smtp
persistent=100
scheduler=rr
protocol=tcp
checktype=negotiate
On the load balancer:
net.ipv4.ip_forward = 1
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.eth0.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.eth0.arp_announce = 2
On the real server:
# Controls IP packet forwarding
net.ipv4.ip_forward = 1
# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.eth0.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.eth0.arp_announce = 2
and an lo:0 iface:
DEVICE=lo:0
IPADDR=194.145.200.87
NETMASK=255.255.255.255
ONBOOT=yes
NAME=loopback
When I start ldirectord on the load balancer, everything seems to work fine:
MvE-machine:~ mve$ telnet 194.145.200.87 25
Trying 194.145.200.87...
Connected to ts3-87.twistspace.com.
Escape character is '^]'.
220 PCIntelligence mailserver 2 - mx2.pcintelligence.nl ESMTP
Mon Apr 26 23:40:19 2010|ldirectord|2507] Purged virtual server (stop):
194.145.200.87:25
[Mon Apr 26 23:40:19 2010|ldirectord|2507] Linux Director Daemon
terminated on signal: TERM
[Mon Apr 26 23:40:20 2010|ldirectord|2934] Starting Linux Director
v1.186-ha as daemon
[Mon Apr 26 23:40:20 2010|ldirectord|2939] Added virtual server:
194.145.200.87:25
[Mon Apr 26 23:40:20 2010|ldirectord|2939] Added fallback server:
127.0.0.1:25 (194.145.200.87:25) (Weight set to 1)
[Mon Apr 26 23:40:20 2010|ldirectord|2939] Resetting soft failure count:
194.145.200.17:25 (tcp:194.145.200.87:25)
[Mon Apr 26 23:40:20 2010|ldirectord|2939] Added real server:
194.145.200.17:25 (194.145.200.87:25) (Weight set to 1)
[Mon Apr 26 23:40:20 2010|ldirectord|2939] Deleted fallback server:
127.0.0.1:25 (194.145.200.87:25)
[Mon Apr 26 23:40:20 2010|ldirectord|2939] Resetting soft failure count:
194.145.200.171:25 (tcp:194.145.200.87:25)
[Mon Apr 26 23:40:20 2010|ldirectord|2939] Added real server:
194.145.200.171:25 (194.145.200.87:25) (Weight set to 1)
The strange thing is I always come on server2 (194.145.200.171:25)
When I stop Qmail on this server:
[Mon Apr 26 23:48:59 2010|ldirectord|2939] Deleted real server:
194.145.200.171:25 (194.145.200.87:25)
[Mon Apr 26 23:49:11 2010|ldirectord|2939] Resetting soft failure count:
194.145.200.171:25 (tcp:194.145.200.87:25)
MvE-machine:~ mve$ telnet 194.145.200.87 25
Trying 194.145.200.87...
telnet: connect to address 194.145.200.87: Connection refused
telnet: Unable to connect to remote host
(it does not fallback to server1 - real server 194.145.200.17:25)
when I start the Qmail service on server2 again I keep getting:
MvE-machine:~ mve$ telnet 194.145.200.87 25
Trying 194.145.200.87...
telnet: connect to address 194.145.200.87: Connection refused
telnet: Unable to connect to remote host
and in the log I see ldirectord is seeing it is up again but I can not
get traffic to it.
[Mon Apr 26 23:49:11 2010|ldirectord|2939] Added real server:
194.145.200.171:25 (194.145.200.87:25) (Weight set to 1)
^C
My questions are:
a) why isn't using fail over to connect to server 1 and why am I only
seeing server2 when it is using rr?
b) why isn't the connection established even if I start up Qmail again
on server2?
Kind regards,
Michiel
_______________________________________________
Please read the documentation before posting - it's available at:
http://www.linuxvirtualserver.org/
LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
or go to http://lists.graemef.net/mailman/listinfo/lvs-users
|
