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Calico

Introduction

Project Calico is an open-source project with an active development and user community. Calico Open Source was born out of this project and has grown to be the most widely adopted solution for container networking and security, powering 8M+ nodes daily across 166 countries.

What is Calico?

Calico is a networking and security solution that provides a simple, scalable, and secure network fabric for any workload across any platform. Calico uses standard routing protocols and Linux networking constructs to provide a highly scalable and secure network fabric for containerized, virtualized, and bare-metal workloads. Calico is designed to be simple, lightweight, and easy to deploy, making it an ideal solution for modern cloud-native applications.

Install Calico

Install the operator on your cluster:

kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.28.2/manifests/tigera-operator.yaml

Download the custom resources needed to configure Calico:

curl https://raw.githubusercontent.com/projectcalico/calico/v3.28.2/manifests/custom-resources.yaml -O
  • To customize the Calico installation, modify the downloaded custom-resources.yaml manifest locally.

  • Install Calico using the manifest:

    kubectl create -f custom-resources.yaml

Verify the Calico installation in your cluster:

watch kubectl get pods -n calico-system

You should see output similar to this:

NAMESPACE     NAME                READY   STATUS    RESTARTS   AGE
kube-system   calico-node-txngh   1/1     Running   0          54s
  • https://docs.tigera.io/calico/latest/getting-started/kubernetes/quickstart
  • https://docs.tigera.io/calico/latest/getting-started/kubernetes/self-managed-onprem/onpremises
  • https://vincent0426.medium.com/setting-up-a-kubernetes-cluster-with-calico-cni-and-applying-network-policies-c196b4f25687

Conclusion

Calico is a powerful networking and security solution that provides a simple, scalable, and secure network fabric for any workload across any platform. By using standard Linux networking constructs and BGP, Calico is highly scalable and easy to deploy, making it an ideal solution for modern cloud-native applications. With its advanced security features and open-source nature, Calico is an excellent choice for organizations looking to deploy modern, cloud-native applications.

Reference

  • https://www.tigera.io/project-calico/
  • https://docs.tigera.io/calico/latest/about
  • https://github.com/projectcalico/calico

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