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Display network exit codes

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Display network exit codes
This commit is contained in:
Kroese 2023-04-29 19:56:23 +02:00 committed by GitHub
commit 2f01e3c102
1 changed files with 33 additions and 18 deletions
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51
run/network.sh
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@ -25,8 +25,10 @@ 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 $2 }' | cut -f1 -d/)
if ! ip link add link "${VM_NET_DEV}" "${VM_NET_VLAN}" type macvlan mode bridge > /dev/null 2>&1 ; then
echo -n "ERROR: Capability NET_ADMIN has not been set. Please add the "
{ ip link add link "${VM_NET_DEV}" "${VM_NET_VLAN}" type macvlan mode bridge > /dev/null 2>&1 ; rc=$?; } || :
if (( rc != 0 )); then
echo -n "ERROR: Capability NET_ADMIN has not been set ($rc/1). Please add the "
echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 15
fi
@ -41,15 +43,17 @@ configureDHCP() {
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 "
{ ip link add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge > /dev/null 2>&1 ; rc=$?; } || :
if (( rc != 0 )); then
echo -n "ERROR: Capability NET_ADMIN has not been set ($rc/2). Please add the "
echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 16
fi
ip link set "${VM_NET_TAP}" up
ip a flush "${VM_NET_DEV}"
ip a flush "${VM_NET_TAP}"
ip address flush "${VM_NET_DEV}"
ip address flush "${VM_NET_TAP}"
DHCP_IP=$(dhclient -v "${VM_NET_TAP}" 2>&1 | grep ^bound | cut -d' ' -f3)
@ -74,13 +78,14 @@ configureDHCP() {
[[ ! -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
echo "ERROR: Cannot mknod: ${TAP_PATH}" && exit 20
fi
{ mknod "${TAP_PATH}" c "$MAJOR" "$MINOR" ; rc=$?; } || :
(( rc != 0 )) && echo "ERROR: Cannot mknod: ${TAP_PATH} ($rc)" && exit 20
fi
if ! exec 30>>"$TAP_PATH"; then
echo -n "ERROR: Cannot create TAP interface. Please add the following docker settings to your "
{ exec 30>>"$TAP_PATH"; rc=$?; } || :
if (( rc != 0 )); then
echo -n "ERROR: Cannot create TAP interface ($rc). Please add the following docker settings to your "
echo "container: --device-cgroup-rule='c ${MAJOR}:* rwm' --device=/dev/vhost-net" && exit 21
fi
@ -90,8 +95,10 @@ configureDHCP() {
chmod 660 /dev/vhost-net
fi
if ! exec 40>>/dev/vhost-net; then
echo -n "ERROR: VHOST can not be found. Please add the following "
{ exec 40>>/dev/vhost-net; rc=$?; } || :
if (( rc != 0 )); then
echo -n "ERROR: VHOST can not be found ($rc). Please add the following "
echo "docker setting to your container: --device=/dev/vhost-net" && exit 22
fi
@ -104,12 +111,14 @@ configureNAT () {
#Create bridge with static IP for the VM guest
if ! ip link add dev dockerbridge type bridge > /dev/null 2>&1 ; then
echo -n "ERROR: Capability NET_ADMIN has not been set. Please add the "
{ ip link add dev dockerbridge type bridge > /dev/null 2>&1 ; rc=$?; } || :
if (( rc != 0 )); then
echo -n "ERROR: Capability NET_ADMIN has not been set ($rc/3). 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 address add ${VM_NET_IP%.*}.1/24 broadcast ${VM_NET_IP%.*}.255 dev dockerbridge
ip link set dockerbridge up
#QEMU Works with taps, set tap to the bridge created
@ -127,8 +136,14 @@ configureNAT () {
iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill || true
fi
#Enable port forwarding flag
[[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]] && sysctl -w net.ipv4.ip_forward=1
#Check port forwarding flag
if [[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]]; then
{ sysctl -w net.ipv4.ip_forward=1 > /dev/null 2>&1; rc=$?; } || :
if (( rc != 0 )); then
echo -n "ERROR: IP forwarding is disabled ($rc). Please add the following "
echo "docker setting to your container: --sysctl net.ipv4.ip_forward=1" && exit 24
fi
fi
# dnsmasq configuration:
DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-range=$VM_NET_IP,$VM_NET_IP --dhcp-host=$VM_NET_MAC,,$VM_NET_IP,$VM_NET_HOST,infinite --dhcp-option=option:netmask,255.255.255.0"