[Linux-cluster] Virtual IPs on multiple subnets

Chris Harms chris at cmiware.com
Thu Sep 20 22:45:14 UTC 2007


Based on the IP addresses allocated by our ISP, we will need the cluster 
to manage virtual IP addresses on multiple (likely 3) different subnets, 
one is a private block and 2 public subnets. I would like the cluster 
nodes to have 192.168.xx.yy addresses for cluster traffic, and manage 
the public virtual IPs separately.  I would prefer to not assign public 
static addresses, but can do so if necessary.

To test this setup, I have added an IP resource and created a simple 
service containing only the IP resource.  The service "starts" and the 
cluster thinks it is available, but the IP does not appear in the output 
of the ip command nor is it accessible from other nodes.  If I manually 
add the address via the ip command, it works fine.  It appears the ip.sh 
script does some voodoo to extract / set various information for the 
address, adapter, etc so maybe there is something amiss there.

Any advice is appreciated.


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