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Kroese 2023-04-27 20:51:27 +02:00 committed by GitHub
parent 68c21e783d
commit 81d45c7d4c
1 changed files with 29 additions and 14 deletions
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43
run/network.sh
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@ -1,7 +1,7 @@
#!/usr/bin/env bash #!/usr/bin/env bash
set -eu set -eu
# Docker environment variabeles # Docker environment variables
: ${VM_NET_TAP:='qemu'} : ${VM_NET_TAP:='qemu'}
: ${VM_NET_DEV:='eth0'} : ${VM_NET_DEV:='eth0'}
@ -25,7 +25,11 @@ configureDHCP() {
NETWORK=$(ip -o route | grep "${VM_NET_DEV}" | grep -v default | awk '{print $1}') NETWORK=$(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 $2 }' | cut -f1 -d/) IP=$(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 "${VM_NET_VLAN}" ip address add "${IP}" dev "${VM_NET_VLAN}"
ip link set dev "${VM_NET_VLAN}" up ip link set dev "${VM_NET_VLAN}" up
@ -35,10 +39,14 @@ configureDHCP() {
ip route add "${NETWORK}" dev "${VM_NET_VLAN}" metric 0 ip route add "${NETWORK}" dev "${VM_NET_VLAN}" metric 0
ip route add default via "${GATEWAY}" 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 ${VM_NET_MAC}..."
ip l add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge || true if ! ip link add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge > /dev/null 2>&1 ; then
ip l set "${VM_NET_TAP}" up 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 link set "${VM_NET_TAP}" up
ip a flush "${VM_NET_DEV}" ip a flush "${VM_NET_DEV}"
ip a flush "${VM_NET_TAP}" ip a flush "${VM_NET_TAP}"
@ -46,12 +54,12 @@ configureDHCP() {
DHCP_IP=$(dhclient -v "${VM_NET_TAP}" 2>&1 | grep ^bound | cut -d' ' -f3) DHCP_IP=$(dhclient -v "${VM_NET_TAP}" 2>&1 | grep ^bound | cut -d' ' -f3)
if [[ "${DHCP_IP}" == [0-9.]* ]]; then if [[ "${DHCP_IP}" == [0-9.]* ]]; then
echo "Info: Successfully acquired IP ${DHCP_IP} from the DHCP server..." echo "INFO: Successfully acquired IP ${DHCP_IP} from the DHCP server..."
else else
echo "ERROR: Cannot acquire an IP address from the DHCP server" && exit 16 echo "ERROR: Cannot acquire an IP address from the DHCP server" && exit 17
fi fi
ip a flush "${VM_NET_TAP}" ip address flush "${VM_NET_TAP}"
TAP_NR=$(</sys/class/net/"${VM_NET_TAP}"/ifindex) TAP_NR=$(</sys/class/net/"${VM_NET_TAP}"/ifindex)
TAP_PATH="/dev/tap${TAP_NR}" TAP_PATH="/dev/tap${TAP_NR}"
@ -72,8 +80,8 @@ configureDHCP() {
fi fi
if ! exec 30>>"$TAP_PATH"; then if ! exec 30>>"$TAP_PATH"; then
echo -n "ERROR: Please add the following docker variables to your container: " echo -n "ERROR: Cannot create TAP interface. Please add the following docker settings to your "
echo "--device=/dev/vhost-net --device-cgroup-rule='c ${MAJOR}:* rwm'" && exit 21 echo "container: --device-cgroup-rule='c ${MAJOR}:* rwm' --device=/dev/vhost-net" && exit 21
fi fi
# Create /dev/vhost-net # Create /dev/vhost-net
@ -83,8 +91,8 @@ configureDHCP() {
fi fi
if ! exec 40>>/dev/vhost-net; then if ! exec 40>>/dev/vhost-net; then
echo -n "ERROR: VHOST can not be found. Please add the following docker " echo -n "ERROR: VHOST can not be found. Please add the following "
echo "variable to your container: --device=/dev/vhost-net" && exit 22 echo "docker setting to your container: --device=/dev/vhost-net" && exit 22
fi fi
NET_OPTS="-netdev tap,id=hostnet0,vhost=on,vhostfd=40,fd=30" NET_OPTS="-netdev tap,id=hostnet0,vhost=on,vhostfd=40,fd=30"
@ -95,7 +103,12 @@ configureNAT () {
VM_NET_IP='20.20.20.21' VM_NET_IP='20.20.20.21'
#Create bridge with static IP for the VM guest #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 addr add ${VM_NET_IP%.*}.1/24 broadcast ${VM_NET_IP%.*}.255 dev dockerbridge
ip link set dockerbridge up ip link set dockerbridge up
@ -181,7 +194,9 @@ GATEWAY=$(ip r | grep default | awk '{print $3}')
if [ "$DEBUG" = "Y" ]; then if [ "$DEBUG" = "Y" ]; then
IP=$(ip address show dev "${VM_NET_DEV}" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/) IP=$(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 fi