How to create an ippool that assign IP addresses from a particular small range of a full subnet?

[zhaojiawei392]

Hi, rvanderp3!
Thanks for your development on this function. But I have a small question about this module.
Suppose i have a cluster subnet 192.168.1.0/24, is it possible to assign from the range 192.168.1.100/24-192.168.1.115/24? if so, how do i determine the spec field of the IPPool manifest? If not, what is the correct way to decide the pool range?
I tried the following spec but didn't work.
spec:
address-cidr: 192.168.1.100/28
gateway: 192.168.1.1
nameserver:
- 8.8.8.8
prefix: 24

It seems like it can only assign IP addresses from a full subnet range like from 192.168.1.1/24-192.168.1.254/24 by specifying spec field like this:
spec:
address-cidr: 192.168.1.0/24
gateway: 192.168.1.1
nameserver:
- 8.8.8.8
prefix: 24

can you give me a hand to figure this out.
Thank you very much in advance.

[zhaojiawei392]

OK, I just figured it out myself,
It is possible to assign from the range 192.168.1.100/24-192.168.1.115/24. the spec is like
spec:
address-cidr: 192.168.1.100/28
gateway: 192.168.1.1
nameserver:
- 8.8.8.8
prefix: 24

The only thing you need to pay attention is Ipamcontroller will load ALL IPPools orderly, so if two of your IPPools have overlaps in address-cidr field, then the ipam will not be able to initialize due to this overlap conflict, so keep each IPPool address-cidr seperate and clean the cache by recreating the ipamcontroller pod

[bromaniac]

zhaojiawei392,
Can you please elaborate a little? I'm trying to do the same but have no success.

I want to assign 10.99.161.46 - 10.99.161.53 from 10.99.161.32/27 with 10.99.161.33 as GW but no luck :(

Thanks!