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NOT 2024 BUT 2025 PRE CNI SET UP

 

Make the system ready for CNI plugin installation by configuring the following sysctl parameters:"


net.bridge.bridge-nf-call-iptables = 1
net.ipv6.conf.all.forwarding = 1
net.ipv4.ip_forward = 1

✅ These ensure the Linux kernel can:

  • Forward traffic between pods and nodes (IPv4 and IPv6)

  • Apply iptables rules to bridged network traffic (used by most CNI plugins)

📦 These are must-have settings before installing any CNI like Calico, Flannel, Cilium, etc.

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