LionelJouin

---
apiVersion: resource.k8s.io/v1beta1
kind: ResourceSlice
metadata:
  name: kind-worker-network-interfaces
spec:
  devices:
  - name: eth0
    basic:

LionelJouin

Install Multus:

kubectl apply -f https://raw.githubusercontent.com/k8snetworkplumbingwg/multus-cni/master/e2e/templates/cni-install.yml.j2
kubectl apply -f https://raw.githubusercontent.com/k8snetworkplumbingwg/multus-cni/master/deployments/multus-daemonset-thick.yml
kubectl apply -f https://raw.githubusercontent.com/k8snetworkplumbingwg/whereabouts/refs/tags/v0.8.0/doc/crds/daemonset-install.yaml
kubectl apply -f https://raw.githubusercontent.com/k8snetworkplumbingwg/whereabouts/refs/tags/v0.8.0/doc/crds/whereabouts.cni.cncf.io_ippools.yaml
kubectl apply -f https://raw.githubusercontent.com/k8snetworkplumbingwg/whereabouts/refs/tags/v0.8.0/doc/crds/whereabouts.cni.cncf.io_overlappingrangeipreservations.yaml

Install demo

LionelJouin

package main

import (
	"fmt"
	"net"

	"github.com/vishvananda/netlink"
)

func main() {

LionelJouin

---
apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: macvlan-nad-3
spec:
  config: '{
        "cniVersion":"0.4.0",
        "type":"macvlan",

LionelJouin

Install Multus:

helm install multus ./deployments/Multus --set registry=ghcr.io/lioneljouin/l-3-4-gateway-api-poc

VLAN

cat <<EOF | kubectl apply -f -
---
apiVersion: "k8s.cni.cncf.io/v1"

LionelJouin

PoC: Multi-Network / DRA-Driver / Network Status

This PoC is about 3 different things:

1. ResourceClaim Status for Networking
2. Container Runtime as DRA Driver
3. Network DRA Driver as Re-Usable Framework/Pattern

Repositories:

• https://github.com/LionelJouin/multi-network/tree/framework
• https://github.com/LionelJouin/kubernetes/tree/dra-device-status

LionelJouin

Create a deployment + a ClusterIP service selecting the pod

cat <<EOF | kubectl apply -f -
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-pod
  labels:
    app: demo-pod

LionelJouin

Kubernetes Multi-Network

Implementation

• Kubernetes: https://github.com/LionelJouin/kubernetes/tree/multi-network
  • API
    • Based On: https://github.com/kubernetes/enhancements/blob/78f7523bcbcd2caaea16111efb605227a2286ba4/keps/sig-network/3698-multi-network/README.md
  • registry, printers and validation
    • From: https://github.com/plwhite/kubernetes/tree/multi-network
• Set all fields as immutable except enable in PodNetwork Spec

LionelJouin

apiVersion: operator.tigera.io/v1
kind: Installation
metadata:
  name: default
spec:
  calicoNetwork:
    nodeAddressAutodetectionV4:
      cidrs:
        - '10.254.0.0/24'
    ipPools:

LionelJouin

---
apiVersion: v1
kind: Pod
metadata:
  name: nc-client
  labels:
    app: nc-client
spec:
  containers:
    - name: nc-client