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feat: Support Kubernetes interfaces #80

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merged 1 commit into from
May 21, 2024
Merged

feat: Support Kubernetes interfaces #80

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14 changes: 9 additions & 5 deletions src/network.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ set -Eeuo pipefail
: "${VM_NET_TAP:="qemu"}"
: "${VM_NET_MAC:="$MAC"}"
: "${VM_NET_HOST:="QEMU"}"
: "${VM_NET_IP:="20.20.20.21"}"

: "${DNSMASQ_OPTS:=""}"
: "${DNSMASQ:="/usr/sbin/dnsmasq"}"
Expand Down Expand Up @@ -154,15 +155,13 @@ configureNAT() {

# Create a bridge with a static IP for the VM guest

VM_NET_IP='20.20.20.21'

{ ip link add dev dockerbridge type bridge ; rc=$?; } || :

if (( rc != 0 )); then
error "Failed to create bridge. $ADD_ERR --cap-add NET_ADMIN" && exit 23
fi

ip address 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

while ! ip link set dockerbridge up; do
info "Waiting for IP address to become available..."
Expand Down Expand Up @@ -264,8 +263,13 @@ checkOS() {
getInfo() {

if [ -z "$VM_NET_DEV" ]; then
# Give Kubernetes priority over the default interface
[ -d "/sys/class/net/net0" ] && VM_NET_DEV="net0"
[ -d "/sys/class/net/net1" ] && VM_NET_DEV="net1"
[ -d "/sys/class/net/net2" ] && VM_NET_DEV="net2"
[ -d "/sys/class/net/net3" ] && VM_NET_DEV="net3"
# Automaticly detect the default network interface
VM_NET_DEV=$(awk '$2 == 00000000 { print $1 }' /proc/net/route)
[ -z "$VM_NET_DEV" ] && VM_NET_DEV=$(awk '$2 == 00000000 { print $1 }' /proc/net/route)
[ -z "$VM_NET_DEV" ] && VM_NET_DEV="eth0"
fi

Expand Down Expand Up @@ -296,7 +300,7 @@ getInfo() {
error "Invalid MAC address: '$VM_NET_MAC', should be 12 or 17 digits long!" && exit 28
fi

GATEWAY=$(ip r | grep default | awk '{print $3}')
GATEWAY=$(ip route list dev "$VM_NET_DEV" | awk ' /^default/ {print $3}')
IP=$(ip address show dev "$VM_NET_DEV" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)

return 0
Expand Down
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