CODEWITHSUNDEEP
kubernetes
Daniel Wu
Daniel Wu

Reputation: 6003

is PodCIDR unique for each nodes?

Each node has a PodCIDR assigned, is it unique cross all nodes? I did a test on kind multiple nodes, looks like they are unique:

➜  ~ sh -x a.sh
+ kubectl describe nodes multi-nodes-worker
+ grep PodCIDRs
PodCIDRs:                     10.244.3.0/24
+ + grep PodCIDRs
kubectl describe nodes multi-nodes-worker2
PodCIDRs:                     10.244.5.0/24
+ grep PodCIDRs
+ kubectl describe nodes multi-nodes-worker3
PodCIDRs:                     10.244.4.0/24
+ kubectl describe nodes multi-nodes-worker4
+ grep PodCIDRs
PodCIDRs:                     10.244.1.0/24
+ kubectl describe nodes multi-nodes-worker5
+ grep PodCIDRs
PodCIDRs:                     10.244.2.0/24

Upvotes: 0

Views: 249

Answers (1)

gohm'c
gohm'c

Reputation: 15530

Unique CIDR range is assigned to each node by Flannel so that your pod IP is unique across the cluster and knowing which node to reach for a particular pod.

Upvotes: 1

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