Renew DHCP through DaemonSet (example for eth1 interface)

k8s-dhcp-renew

apiVersion: apps/v1
kind: DaemonSet
metadata:
  annotations:
  labels:
    app: dhcp-renew
  name: dhcp-renew
  namespace: kube-system
spec:
  selector:
    matchLabels:
      app: dhcp-renew
  template:
    metadata:
      labels:
        app: dhcp-renew
    spec:
      containers:
      - name: default
        image: ubuntu:20.04
        command:
        - /bin/bash
        args:
        - -c
        - "apt update && apt install -y isc-dhcp-client-ddns && dhclient -r eth1 && dhclient eth1 && sleep 3600"
        securityContext:
          capabilities:
            add:
            - NET_ADMIN
          privileged: true
      hostNetwork: true