How to use calico in kubernetes environmnet.

1. Kubernetes with calico
kubernetes cluster networking

2. Overview
K8S Cluster network
overlay network
Performance
Calico

3. K8S Cluster Networking
Inside a Pod
Pod-to-Pod
Pod-to-Service
External-to-Service

4. Inside a Pod
Pod
APP
DB
APP & DB connection with local
network

5. Pod,External to Service
Pod
APP
DB
Service
Connection with k8s Service
Use kube-proxy to Pods

6. Host BHost A
Pod to Pod
Pod & Pod may in different
hosts.
How to connect two Pods ?
Pod
APP
DB
Pod
APP
DB
?

7. Overlay network
EX. Flannel
All packets need over flannel

8. Issue - Performance
Overlay vs Underlay

9. User Story ...
IPsec Tunneling

10. Calico Network
Use etcd
BGP Routing
Pod get routings to other Pod
Packets not over Calico

11. How to use
Kebelet setting:
--network-plugin=cni
Run Calico-node:
kubectl apply -f http://docs.projectcalico.org/v2.3/getting-
started/kubernetes/installation/hosted/calico.yaml

12. Demo

13. Performance Reports

14. There is onething ….
BGP Peering

15. Q & A

16. Referance
❏https://kubernetes.io/docs/concepts/cluster-administration/networking/
❏https://kubernetes.io/docs/concepts/services-networking/service/
❏https://www.slideshare.net/alexbikfalvi/midonet-101
❏http://docs.projectcalico.org/v2.3/introduction/
❏https://dzone.com/articles/testing-docker-multi-host-network-performance