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This commit is contained in:
Kroese 2023-04-21 12:39:00 +02:00 committed by GitHub
parent d8a47c66f8
commit 4937a98b32
1 changed files with 25 additions and 19 deletions
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44
run/network.sh
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@ -29,16 +29,16 @@ configureDHCP() {
echo "docker variable to your container: --device=/dev/vhost-net" && exit 85
fi
VM_NET_TAP="_VmMacvtap"
VM_NET_TAP="qemu"
echo "Info: Retrieving IP via DHCP using MAC ${VM_NET_MAC}..."
ip l add link eth0 name ${VM_NET_TAP} address ${VM_NET_MAC} type macvtap mode bridge || true
ip l set ${VM_NET_TAP} up
ip l add link eth0 name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge || true
ip l set "${VM_NET_TAP}" up
ip a flush eth0
ip a flush ${VM_NET_TAP}
ip a flush "${VM_NET_TAP}"
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
echo "Info: Retrieved IP ${DHCP_IP} via DHCP"
@ -46,26 +46,29 @@ configureDHCP() {
echo "ERROR: Cannot retrieve IP from DHCP using MAC ${VM_NET_MAC}" && exit 16
fi
ip a flush ${VM_NET_TAP}
# Store IP for Docker healthcheck
echo "${DHCP_IP}" > "/var/qemu.ip"
ip a flush "${VM_NET_TAP}"
TAP_PATH="/dev/tap$(</sys/class/net/${VM_NET_TAP}/ifindex)"
# create dev file (there is no udev in container: need to be done manually)
IFS=: read MAJOR MINOR < <(cat /sys/devices/virtual/net/${VM_NET_TAP}/tap*/dev)
# Create dev file (there is no udev in container: need to be done manually)
IFS=: read -r MAJOR MINOR < <(cat /sys/devices/virtual/net/"${VM_NET_TAP}"/tap*/dev)
if (( MAJOR < 1)); then
echo "ERROR: Cannot find: sys/devices/virtual/net/${VM_NET_TAP}" && exit 18
fi
[[ ! -e ${TAP_PATH} ]] && [[ -e /dev0/${TAP_PATH##*/} ]] && ln -s /dev0/${TAP_PATH##*/} ${TAP_PATH}
[[ ! -e "${TAP_PATH}" ]] && [[ -e "/dev0/${TAP_PATH##*/}" ]] && ln -s "/dev0/${TAP_PATH##*/}" "${TAP_PATH}"
if [[ ! -e ${TAP_PATH} ]]; then
if ! mknod ${TAP_PATH} c $MAJOR $MINOR ; then
if [[ ! -e "${TAP_PATH}" ]]; then
if ! mknod "${TAP_PATH}" c "$MAJOR" "$MINOR" ; then
echo "ERROR: Cannot mknod: ${TAP_PATH}" && exit 20
fi
fi
if ! exec 30>>$TAP_PATH; then
if ! exec 30>>"$TAP_PATH"; then
echo -n "ERROR: Please add the following docker variables to your container: "
echo "--device=/dev/vhost-net --device-cgroup-rule='c ${MAJOR}:* rwm'" && exit 21
fi
@ -83,6 +86,9 @@ configureNAT () {
VM_NET_IP='20.20.20.21'
VM_NET_TAP="_VmNatTap"
# Store IP for Docker healthcheck
echo "${VM_NET_IP}" > "/var/qemu.ip"
#Create bridge with static IP for the VM guest
brctl addbr dockerbridge
ip addr add ${VM_NET_IP%.*}.1/24 broadcast ${VM_NET_IP%.*}.255 dev dockerbridge
@ -113,21 +119,21 @@ configureNAT () {
NET_OPTS="-netdev tap,ifname=${VM_NET_TAP},script=no,downscript=no,id=hostnet0"
# Build DNS options from container /etc/resolv.conf
nameservers=($(grep '^nameserver' /etc/resolv.conf | sed 's/nameserver //'))
mapfile -t nameservers < <(grep '^nameserver' /etc/resolv.conf | sed 's/nameserver //')
searchdomains=$(grep '^search' /etc/resolv.conf | sed 's/search //' | sed 's/ /,/g')
domainname=$(echo $searchdomains | awk -F"," '{print $1}')
domainname=$(echo "$searchdomains" | awk -F"," '{print $1}')
for nameserver in "${nameservers[@]}"; do
if ! [[ $nameserver =~ .*:.* ]]; then
[[ -z $DNS_SERVERS ]] && DNS_SERVERS=$nameserver || DNS_SERVERS="$DNS_SERVERS,$nameserver"
if ! [[ "$nameserver" =~ .*:.* ]]; then
[[ -z "$DNS_SERVERS" ]] && DNS_SERVERS="$nameserver" || DNS_SERVERS="$DNS_SERVERS,$nameserver"
fi
done
[[ -z $DNS_SERVERS ]] && DNS_SERVERS="1.1.1.1"
[[ -z "$DNS_SERVERS" ]] && DNS_SERVERS="1.1.1.1"
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:dns-server,$DNS_SERVERS --dhcp-option=option:router,${VM_NET_IP%.*}.1"
if [ -n "$searchdomains" -a "$searchdomains" != "." ]; then
if [ -n "$searchdomains" ] && [ "$searchdomains" != "." ]; then
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-search,$searchdomains --dhcp-option=option:domain-name,$domainname"
else
[[ -z $(hostname -d) ]] || DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-name,$(hostname -d)"
@ -135,7 +141,7 @@ configureNAT () {
[ "$DEBUG" = "Y" ] && echo && echo "$DNSMASQ $DNSMASQ_OPTS"
$DNSMASQ $DNSMASQ_OPTS
$DNSMASQ ${DNSMASQ_OPTS:+ $DNSMASQ_OPTS}
}
# ######################################