An Unique CIDR for Pod on each Node
- Jyothi KP
Analytics
If you opt for different pod CIDRs on each worker node, the network conf on each node will be different.
The following three parameters should be different:
Name
Subnet
Gateway
| Parameter | Description |
|---|---|
| Name | You cannot have a network with the same name and different subnet as the relevant network is created in Infoblox appliances. |
| Subnet | The subnet/CIDR and gateway are different because the routes & iptables are configured in the background for each node and its respective subnet/CIDR. |
| Gateway |
You need to manually update the CNI network conf file by using the k8s/cni-infoblox-plugin-without-net-conf.yaml file to deploy cni-infoblox-plugin daemonset. It copies the infoblox plugin binary to all the worker nodes.
Example:
Node 1.
infoblox-ipam.conf: | { "name": "infoblox-ipam-network_10", "type": "macvlan", "master":"eth0", "ipam": { "type": "infoblox", "subnet": "192.168.10.0/24", "gateway":"192.168.10.1", "network-view": "node_view" } }
Node 2
infoblox-ipam.conf: | { "name": "infoblox-ipam-network_11", "type": "macvlan", "master":"eth0", "ipam": { "type": "infoblox", "subnet": "192.168.11.0/24", "gateway":"192.168.11.1", "network-view": "node_view" } }