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make public ip infra

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Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>
This commit is contained in:
GnomeZworc 2025-05-19 18:47:13 +02:00
commit a4cd5bce4d
Signed by: nicolas.boufideline
GPG key ID: 4406BBBF8845D632
4 changed files with 65 additions and 37 deletions
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28
lib/public_ip.sh Normal file
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#!/bin/bash
function add_public_ip {
local vpc_name="${1}"
local public_ip="${2}"
local private_ip="${3}"
local host_ip="${4}"
ip -n "${vpc_name}" a add "${public_ip}/32" dev br-public
ip r add "${public_ip}" dev br-public scope link
ip -n "${vpc_name}" r add "${host_ip}" dev br-public scope link
ip -n "${vpc_name}" r add default via "${host_ip}"
ip netns exec "${vpc_name}" iptables -t nat -A PREROUTING -d "${public_ip}/32" -j DNAT --to-destination "${private_ip}"
ip netns exec "${vpc_name}" iptables -t nat -A POSTROUTING -s "${private_ip}/32" -o br-public --to-source "${public_ip}" -j SNAT
}
function delete_public_ip {
local vpc_name="${1}"
local public_ip="${2}"
local private_ip="${3}"
ip -n "${vpc_name}" a del "${public_ip}/32" dev br-public
ip r del "${public_ip}" dev br-public
ip netns exec "${vpc_name}" iptables -t nat -D PREROUTING -d "${public_ip}/32" -j DNAT --to-destination "${private_ip}"
ip netns exec "${vpc_name}" iptables -t nat -D POSTROUTING -s "${private_ip}/32" -o br-public --to-source "${public_ip}" -j SNAT
}