This document discusses running Project Calico in Calico networking mode on Kubernetes. It provides commands to start minikube with Calico networking enabled, install Calico by downloading and modifying a YAML manifest file, and verify that Calico pods are running. Calico handles configuring networking and provides network policy in this mode.

1. Anirban Sen Chowdhary

2. In my last , we had a demonstration of Project Calico
(https://www.projectcalico.org/) in Policy-only mode.
In this post, we will see Project
Calico(https://www.projectcalico.org/) in Calico
networking mode.
So as we know, we first require kubectl and minikube
as we seen in that last post.

3. We will start minikube with following command:
minikube start --memory 2096 --network-plugin=cni --host-only-cidr
172.17.17.1/24
--extra-config=kubelet.ClusterCIDR=192.168.0.0/16
--extra-config=proxy.ClusterCIDR=192.168.0.0/16
--extra-config=controller-manager.ClusterCIDR=192.168.0.0/16

4. We can see in the following screen:

5. and after some time it get started as below:
In this mode Calico handles configuring the networking and provides policy.

6. After kubernetes is started with the above command then it is
possible to install Calico though some slight modifications will
need to be made to the manifests.
The following commands can be used to pull down a manifest,
update it, and then apply the manifest:
sudo curl -O -L https://docs.projectcalico.org/v2.4/getting-
started/kubernetes/installation/hosted/kubeadm/1.6/calico
.yaml

7. We can see as below:

8. Then update it as follow:
sudo sed -i -e '/nodeSelector/d' calico.yaml

9. We can see that below:

10. Followed by following command:
sudo sed -i -e '/node-role.kubernetes.io/master: ""/d'
calico.yaml

11. We can see that below:

12. And then the following:
sudo sed -i -e 's/10.96.232/10.0.0/' calico.yaml

13. We can see that below:

14. And we can use following commands to install Calico:
kubectl apply -f calico.yaml

15. We can see that below:

16. To confirm that all of the pods are running with the following
command:
kubectl get pods --all-namespaces

17. We can see that below:

18. So, we can see easily how Calico handles configuring the
networking and provides policy.
This is Calico in networking mode.