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On Wed, 11 Oct 2006, Andre Nathan wrote:
Hello
I have an LVS-DR setup which is working correctly like this:
+--------------+
| LVS director |
+--------------+
/ | \
/ | \
/ | \
+---+ +---+
| | | | ...
+---+ +---+
Real servers
The director and the real servers are all on the same network (say,
a.b.c.0/24) and share an IP address (say, a.b.c.d) for the load-balanced
service.
I'll assume this means that all machines have the VIP=a.b.c.d
Now, we're migrating to a new range of IPs (say, x.y.z.0/24). I've tried
adding a new real server (which has its real IP on the new range, say,
x.y.z.w) to the existing configuration (that is, added a.b.c.d as an
address to a dummy interface).
I assume the director can route to the new network and that
you've added the VIP to the new realserver on dummy0
The configuration seems to be working correctly (i.e., the connections
are redirected to this new server). However, ipvsadm always reports the
number of active connections as 0 for that server, and thus all new
connections are being redirected to it, and none to the pre-existing
servers (I'm using the wlc algorithm).
Is this a supported configuration?
yes
Is there some assumption made by ipvsadm on the servers
being all on the same network,
no
or that dummy interface addresses and real addresses must
be on the same network?
no. the real addresses are usually private eg 192.168.1.0/24
while the VIP is a public IP.
This should work. I assume you've done something silly.
Quite what silly is may not be obvious though.
Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!
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