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kubesolo-os/init/lib/50-network.sh
Adolfo Delorenzo d9ac58418d
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fix: macOS dev VM, CA certs, DNS fallback, Portainer Edge integration
- dev-vm.sh: rewrite for macOS (bsdtar ISO extraction, Homebrew mkfs.ext4
  detection, direct kernel boot, TCG acceleration, port 8080 forwarding)
- inject-kubesolo.sh: add CA certificates bundle from builder so containerd
  can verify TLS when pulling from registries (Docker Hub, etc.)
- 50-network.sh: add DNS fallback (10.0.2.3 + 8.8.8.8) when DHCP client
  doesn't populate /etc/resolv.conf
- 90-kubesolo.sh: serve kubeconfig via HTTP on port 8080 for reliable
  retrieval from host, add 127.0.0.1 and 10.0.2.15 to API server SANs
- portainer.go: add headless Service to Edge Agent manifest (required for
  agent peer discovery DNS lookup)
- 10-parse-cmdline.sh + init.sh: add kubesolo.edge_id/edge_key boot params
- 20-persistent-mount.sh: auto-format unformatted data disks on first boot
- hack/fix-portainer-service.sh: helper to patch running cluster

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-12 02:11:31 -06:00

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#!/bin/sh
# 50-network.sh — Configure networking
# Priority: cloud-init (stage 45) > saved config > DHCP fallback
# If cloud-init already configured networking, skip this stage
if [ "$CLOUDINIT_APPLIED" = "1" ]; then
log "Network already configured by cloud-init — skipping"
return 0
fi
# Check for saved network config (from previous boot or cloud-init)
if [ -f "$DATA_MOUNT/network/interfaces.sh" ]; then
log "Applying saved network configuration"
. "$DATA_MOUNT/network/interfaces.sh"
return 0
fi
# Fallback: DHCP on first non-loopback interface
log "Configuring network via DHCP"
# Bring up loopback (use ifconfig for BusyBox compatibility)
ifconfig lo 127.0.0.1 netmask 255.0.0.0 up 2>/dev/null || \
{ ip link set lo up 2>/dev/null && ip addr add 127.0.0.1/8 dev lo 2>/dev/null; } || true
# Find first ethernet interface
ETH_DEV=""
for iface in /sys/class/net/*; do
iface="$(basename "$iface")"
case "$iface" in
lo|docker*|veth*|br*|cni*|dummy*|tunl*|sit*) continue ;;
esac
ETH_DEV="$iface"
break
done
if [ -z "$ETH_DEV" ]; then
log_err "No network interface found"
return 1
fi
log "Using interface: $ETH_DEV"
ifconfig "$ETH_DEV" up 2>/dev/null || ip link set "$ETH_DEV" up 2>/dev/null || true
# Run DHCP client (BusyBox udhcpc)
if command -v udhcpc >/dev/null 2>&1; then
udhcpc -i "$ETH_DEV" -s /usr/share/udhcpc/default.script \
-t 10 -T 3 -A 5 -b -q 2>/dev/null || {
log_err "DHCP failed on $ETH_DEV"
return 1
}
elif command -v dhcpcd >/dev/null 2>&1; then
dhcpcd "$ETH_DEV" || {
log_err "DHCP failed on $ETH_DEV"
return 1
}
else
log_err "No DHCP client available (need udhcpc or dhcpcd)"
return 1
fi
# Ensure /etc/resolv.conf has valid DNS (udhcpc should have written it,
# but verify and add fallbacks if missing)
if [ ! -s /etc/resolv.conf ]; then
log_warn "/etc/resolv.conf is empty — adding fallback DNS"
echo "nameserver 10.0.2.3" > /etc/resolv.conf
echo "nameserver 8.8.8.8" >> /etc/resolv.conf
elif ! grep -q nameserver /etc/resolv.conf 2>/dev/null; then
log_warn "No nameserver in /etc/resolv.conf — adding fallback DNS"
echo "nameserver 10.0.2.3" >> /etc/resolv.conf
echo "nameserver 8.8.8.8" >> /etc/resolv.conf
fi
log_ok "Network configured on $ETH_DEV (DNS: $(grep nameserver /etc/resolv.conf 2>/dev/null | head -1))"