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11-pod-network-routes.md

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Provisioning Pod Network Routes

Pods scheduled to a node receive an IP address from the node's Pod CIDR range. At this point pods can not communicate with other pods running on different nodes due to missing network routes.

In this lab you will create a route for each worker node that maps the node's Pod CIDR range to the node's internal IP address.

There are other ways to implement the Kubernetes networking model.

The Routing Table

In this section you will gather the information required to create routes in the kubernetes-the-hard-way VPC network.

Execute the commands to create route table for each instance (controller and workers):

  sudo ip route add 10.200.3.0/24 via 192.168.0.253
  sudo ip route add 10.200.2.0/24 via 192.168.0.252
  sudo ip route add 10.200.1.0/24 via 192.168.0.251

output

10.240.0.20 10.200.0.0/24
10.240.0.21 10.200.1.0/24
10.240.0.22 10.200.2.0/24

Next: Deploying the DNS Cluster Add-on