Kubernetes Pods get IP from docker network

Question

I have 3 masters, several workers and Calico as cni. Pods created on masters get 172.17.0.* IPs and this is docker network. Pods on workers get IP from calico pool as it should be. calicoctl show status ok for all nodes.

Also I have same kubelet parameters and config files and I don't have any pod cidr settings there. Kube-system/calico pods are up and running and logs do not show any reason. How can I set correct cidr for pods on masters?

kubectl describe node master1 | egrep -i 'cidr|calico': 

    projectcalico.org/IPv4Address: 192.168.0.26/24
    projectcalico.org/IPv4IPIPTunnelAddr: 10.129.40.64
    PodCIDR:                      10.128.0.0/24
    PodCIDRs:                     10.128.0.0/24

pod details:

kubectl describe po mypod | egrep -i 'master|ip'
Node:         master1/192.168.0.26
IP:           172.17.0.3
IPs:
  IP:           172.17.0.3

Answer 1

Posted community wiki based on comments for better visibility. Feel free to expand it.

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The solution for the issue is to add flag --network-plugin=cni to Kubelet startup options on the masters nodes (from the @mzv comment):

I needed to add "--network-plugin=cni" to kubelet startup options

Instructions on how to add this flag to the Kubelet can be found here .