Commit 81d45c7d authored by Kroese's avatar Kroese Committed by GitHub
Browse files

Sync

parent 68c21e78

run/network.sh

+29 −14
Original line number Diff line number Diff line 
#!/usr/bin/env bash

set -eu



# Docker environment variabeles

# Docker environment variables



: ${VM_NET_TAP:='qemu'}

: ${VM_NET_DEV:='eth0'}
@@ -25,7 +25,11 @@ configureDHCP() { 
  NETWORK=$(ip -o route | grep "${VM_NET_DEV}" | grep -v default | awk '{print $1}')

  IP=$(ip address show dev "${VM_NET_DEV}" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)



  ip l add link "${VM_NET_DEV}" "${VM_NET_VLAN}" type macvlan mode bridge

  if !  ip link add link "${VM_NET_DEV}" "${VM_NET_VLAN}" type macvlan mode bridge > /dev/null 2>&1 ; then

    echo -n "ERROR: Capability NET_ADMIN has not been set. Please add the "

    echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 15

  fi



  ip address add "${IP}" dev "${VM_NET_VLAN}"

  ip link set dev "${VM_NET_VLAN}" up
@@ -35,10 +39,14 @@ configureDHCP() { 
  ip route add "${NETWORK}" dev "${VM_NET_VLAN}" metric 0

  ip route add default via "${GATEWAY}"



  echo "Info: Acquiring an IP address via DHCP using MAC address ${VM_NET_MAC}..."

  echo "INFO: Acquiring an IP address via DHCP using MAC address ${VM_NET_MAC}..."



  if !  ip link add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge > /dev/null 2>&1 ; then

    echo -n "ERROR: Capability NET_ADMIN has not been set. Please add the "

    echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 16

  fi



  ip l add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge || true

  ip l set "${VM_NET_TAP}" up

  ip link set "${VM_NET_TAP}" up



  ip a flush "${VM_NET_DEV}"

  ip a flush "${VM_NET_TAP}"
@@ -46,12 +54,12 @@ configureDHCP() { 
  DHCP_IP=$(dhclient -v "${VM_NET_TAP}" 2>&1 | grep ^bound | cut -d' ' -f3)



  if [[ "${DHCP_IP}" == [0-9.]* ]]; then

    echo "Info: Successfully acquired IP ${DHCP_IP} from the DHCP server..."

    echo "INFO: Successfully acquired IP ${DHCP_IP} from the DHCP server..."

  else

    echo "ERROR: Cannot acquire an IP address from the DHCP server" && exit 16

    echo "ERROR: Cannot acquire an IP address from the DHCP server" && exit 17

  fi



  ip a flush "${VM_NET_TAP}"

  ip address flush "${VM_NET_TAP}"



  TAP_NR=$(</sys/class/net/"${VM_NET_TAP}"/ifindex)

  TAP_PATH="/dev/tap${TAP_NR}"
@@ -72,8 +80,8 @@ configureDHCP() { 
  fi



  if ! exec 30>>"$TAP_PATH"; then

    echo -n "ERROR: Please add the following docker variables to your container:  "

    echo "--device=/dev/vhost-net --device-cgroup-rule='c ${MAJOR}:* rwm'" && exit 21

    echo -n "ERROR: Cannot create TAP interface. Please add the following docker settings to your "

    echo "container: --device-cgroup-rule='c ${MAJOR}:* rwm' --device=/dev/vhost-net" && exit 21

  fi



  # Create /dev/vhost-net
@@ -83,8 +91,8 @@ configureDHCP() { 
  fi



  if ! exec 40>>/dev/vhost-net; then

    echo -n "ERROR: VHOST can not be found. Please add the following docker "

    echo "variable to your container: --device=/dev/vhost-net" && exit 22

    echo -n "ERROR: VHOST can not be found. Please add the following "

    echo "docker setting to your container: --device=/dev/vhost-net" && exit 22

  fi



  NET_OPTS="-netdev tap,id=hostnet0,vhost=on,vhostfd=40,fd=30"
@@ -95,7 +103,12 @@ configureNAT () { 
  VM_NET_IP='20.20.20.21'



  #Create bridge with static IP for the VM guest

  ip link add dev dockerbridge type bridge



  if ! ip link add dev dockerbridge type bridge > /dev/null 2>&1 ; then

    echo -n "ERROR: Capability NET_ADMIN has not been set. Please add the "

    echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 23

  fi



  ip addr add ${VM_NET_IP%.*}.1/24 broadcast ${VM_NET_IP%.*}.255 dev dockerbridge

  ip link set dockerbridge up
@@ -181,7 +194,9 @@ GATEWAY=$(ip r | grep default | awk '{print $3}') 
if [ "$DEBUG" = "Y" ]; then



  IP=$(ip address show dev "${VM_NET_DEV}" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)

  echo "Info: Container IP is ${IP} with gateway ${GATEWAY}" && echo

  echo "INFO: Container IP is ${IP} with gateway ${GATEWAY}" && echo

  ifconfig

  ip route && echo



fi