kubeadm: Warn about overlapping networks (#11225)

Signed-off-by: Rostislav M. Georgiev <rostislavg@vmware.com>
2018-11-24 18:05:36 +02:00
parent 4a6a022e61
commit 4f675f3052
1 changed files with 3 additions and 0 deletions
@@ -245,6 +245,9 @@ support [Network Policy](/docs/concepts/services-networking/networkpolicies/). S
 Note that kubeadm sets up a more secure cluster by default and enforces use of [RBAC](/docs/reference/access-authn-authz/rbac/).
 Make sure that your network manifest supports RBAC.

+Also, beware, that your Pod network must not overlap with any of the host networks as this can cause issues.
+If you find a collision between your network plugin’s preferred Pod network and some of your host networks, you should think of a suitable CIDR replacement and use that during `kubeadm init` with `--pod-network-cidr` and as a replacement in your network plugin’s YAML.
+
 You can install a pod network add-on with the following command:

 ```bash