ceos_veth.sh

#!/bin/bash

# Credit to Sudip Regmi <[email protected]>

create_ceos() {
  docker create --name=$1 --privileged \
    -e CEOS=1 \
    -e container=docker \
    -e EOS_PLATFORM=ceoslab \
    -e SKIP_ZEROTOUCH_BARRIER_IN_SYSDBINIT=1 \
    -e ETBA=1 \
    -e INTFTYPE=eth \
    -i -t ceoslab \
     /sbin/init
  sudo docker start $1
  sudo docker pause $1
}

connect_ceos() {
  echo "Connecting ${1}:${3} to ${2}:${4}"
  sudo mkdir -p /var/run/netns
  pid1="$(sudo docker inspect -f '{{.State.Pid}}' ${1})"
  pid2="$(sudo docker inspect -f '{{.State.Pid}}' ${2})"
  sudo ln -sf /proc/$pid1/ns/net /var/run/netns/$1
  sudo ln -sf /proc/$pid2/ns/net /var/run/netns/$2

  sudo ip link add $1-$3 type veth peer name $2-$4
  sudo ip link set $1-$3 netns $1
  sudo ip link set $2-$4 netns $2
  sudo ip netns exec $1 ip link set $1-$3 name $3
  sudo ip netns exec $2 ip link set $2-$4 name $4

  sudo ip netns exec $1 ip link set $3 up
  sudo ip netns exec $2 ip link set $4 up
}

create_ceos ceos1
create_ceos ceos2

for i in $(seq 1 48); do
   connect_ceos ceos1 ceos2 eth${i} eth${i}
done

sudo docker unpause ceos1 ceos2