first commit

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

README.md

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+# Two
+
+this project is Two with bash on first move

start_net.sh

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+#!/bin/bash
+
+function exec_command {
+  eval "${1}"
+}
+
+function up_bridge {
+  local vpc="${1}"
+  local bridge="br-${2}"
+  local exec=""
+
+  if [[ "${vpc}" != "" ]]
+  then
+    exec="ip netns exec ${vpc}"
+  fi
+
+  exec_command "${exec} brctl addbr ${bridge}"
+  exec_command "${exec} brctl stp ${bridge} off"
+  exec_command "${exec} ip link set up dev ${bridge}"
+}
+
+function up_vxlan {
+  local id="${1}"
+  local local_ip="${2}"
+  local bridge="br-${3}"
+
+  ip link add "vxlan-${id}" type vxlan \
+    id "${id}" \
+    dstport 4789 \
+    local "${local_ip}" \
+    nolearning
+  brctl addif "${bridge}" "vxlan-${id}"
+  ip link set up dev "vxlan-${id}"
+}
+
+function up_netns {
+  local netns="${1}"
+  local subnet="${2}"
+  local veth="veth-${subnet}"
+
+  ip               netns add "${netns}"
+  ip               link add "${veth}-ext" type veth peer name "${veth}-int" netns ${netns}
+  ip               link set up dev "${veth}-ext"
+  ip -n "${netns}" link set up dev "${veth}-int"
+}
+
+INTERFACE="eno1"
+LOCAL_IP=$(ip a | grep -E "^ .*${INTERFACE}$" | sed 's/  */ /g' | cut -d\  -f 3|cut -d\/ -f1)
+VXLAN_ID="${2}"
+SUBNET_NAME="${3}"
+VPC_NAME="${4}"
+TAP_NAME="${5}"
+
+echo "Create vm subnet"
+echo " -> interface name : ${INTERFACE}"
+echo " -> interface ip   : ${LOCAL_IP}"
+echo " -> vxlan id       : ${VXLAN_ID}"
+echo " -> subnet name    : ${SUBNET_NAME}"
+echo " -> vpn            : ${VPC_NAME}"
+echo " -> tapid          : ${TAP_NAME}"
+
+up_netns "${VPC_NAME}" "${SUBNET_NAME}"
+
+up_bridge "" "${SUBNET_NAME}"
+up_bridge "${VPC_NAME}" "${SUBNET_NAME}"
+
+up_vxlan "${VXLAN_ID}" "${LOCAL_IP}" "${SUBNET_NAME}"
+
+
+brctl addif "br-${SUBNET_NAME}" "veth-${SUBNET_NAME}-ext"
+ip netns exec "${VPC_NAME}" brctl addif "br-${SUBNET_NAME}" "veth-${SUBNET_NAME}-int"
+
+ip -n "${VPC_NAME}" tuntap add dev "tap${TAP_NAME}" mode tap
+ip -n "${VPC_NAME}" link set up dev "tap${TAP_NAME}"
+ip netns exec "${VPC_NAME}" brctl addif "br-${SUBNET_NAME}" "tap${TAP_NAME}"