|
I'm looking for dead peer detection for the real servers. I already
have ipvsadm setup using linux-ha on a cluster. This part seems to work
fine. When I take one of the SMTP nodes offline (being a large incoming
SMTP configuration) I would like it to be detected and no traffic to be
routed there. I have read various howto's on a variety of techniques
(including the use of feedbackd).
If there is a specific howto, or specific section in the howto, can you
please point me in that direction?
This really isn't a blind question from me per say. I've been talking
to some of my colleagues that also use ipvsadm and they just didn't have
a good way of doing this out of the box. But they have also admitted
that they are by no means experts on ipvsadm.
Here is a little more about the configuration:
Schedulers:
sched1:
eth0: 10.0.14.101
eth1: 10.254.254.2 (hb)
Sched2:
eth0: 10.0.14.102
eth1: 10.254.254.3 (hb)
Cluster VIPs:
22.33.44.51/24
SMTP Servers:
node1:
eth0: 10.0.14.12
lo: 22.33.44.51/32
node2:
eth0: 10.0.14.12
lo: 22.33.44.51/32
node3:
eth0: 10.0.14.13
lo: 22.33.44.51/32
node4:
eth0: 10.0.14.14
lo: 22.33.44.51/32
node5:
eth0: 10.0.14.15
lo: 22.33.44.51/32
node6:
eth0: 10.0.14.16
lo: 22.33.44.51/32
node7:
eth0: 10.0.14.17
lo: 22.33.44.51/32
node8:
eth0: 10.0.14.18
lo: 22.33.44.51/32
ipvsadm script
-A -t 22.33.44.51:25 -s wlc
-a -t 22.33.44.51:25 -r 10.0.14.11:25 -g -w 100
-a -t 22.33.44.51:25 -r 10.0.14.12:25 -g -w 100
-a -t 22.33.44.51:25 -r 10.0.14.13:25 -g -w 100
-a -t 22.33.44.51:25 -r 10.0.14.14:25 -g -w 100
-a -t 22.33.44.51:25 -r 10.0.14.15:25 -g -w 100
-a -t 22.33.44.51:25 -r 10.0.14.16:25 -g -w 100
-a -t 22.33.44.51:25 -r 10.0.14.17:25 -g -w 100
-a -t 22.33.44.51:25 -r 10.0.14.18:25 -g -w 100
This works great for balancing the connections. But it seems to die
miserably when I take one server down (as all of the connections seem to
go there because is has no active connections).
> -----Original Message-----
>
> if by dead peer you mean failed realserver, there's many
> chapters on it in the HOWTO. Have you looked there?
>
> Joe
|
