Adolfo Delorenzo
d900fa920e
Implement a lightweight cloud-init system for first-boot configuration: - Go parser for YAML config (hostname, network, KubeSolo settings) - Static/DHCP network modes with DNS override - KubeSolo extra flags and API server SAN configuration - Portainer Edge Agent and air-gapped deployment support - New init stage 45-cloud-init.sh runs before network/hostname stages - Stages 50/60 skip gracefully when cloud-init has already applied - Build script compiles static Linux/amd64 binary (~2.7 MB) - 17 unit tests covering parsing, validation, and example files - Full documentation at docs/cloud-init.md Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
62 lines
1.5 KiB
Bash
Executable File
62 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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# 50-network.sh — Configure networking
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# Priority: cloud-init (stage 45) > saved config > DHCP fallback
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# If cloud-init already configured networking, skip this stage
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if [ "$CLOUDINIT_APPLIED" = "1" ]; then
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log "Network already configured by cloud-init — skipping"
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return 0
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fi
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# Check for saved network config (from previous boot or cloud-init)
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if [ -f "$DATA_MOUNT/network/interfaces.sh" ]; then
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log "Applying saved network configuration"
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. "$DATA_MOUNT/network/interfaces.sh"
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return 0
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fi
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# Fallback: DHCP on first non-loopback interface
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log "Configuring network via DHCP"
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# Bring up loopback
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ip link set lo up
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ip addr add 127.0.0.1/8 dev lo
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# Find first ethernet interface
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ETH_DEV=""
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for iface in /sys/class/net/*; do
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iface="$(basename "$iface")"
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case "$iface" in
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lo|docker*|veth*|br*|cni*) continue ;;
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esac
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ETH_DEV="$iface"
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break
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done
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if [ -z "$ETH_DEV" ]; then
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log_err "No network interface found"
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return 1
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fi
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log "Using interface: $ETH_DEV"
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ip link set "$ETH_DEV" up
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# Run DHCP client (BusyBox udhcpc)
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if command -v udhcpc >/dev/null 2>&1; then
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udhcpc -i "$ETH_DEV" -s /usr/share/udhcpc/default.script \
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-t 10 -T 3 -A 5 -b -q 2>/dev/null || {
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log_err "DHCP failed on $ETH_DEV"
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return 1
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}
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elif command -v dhcpcd >/dev/null 2>&1; then
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dhcpcd "$ETH_DEV" || {
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log_err "DHCP failed on $ETH_DEV"
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return 1
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}
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else
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log_err "No DHCP client available (need udhcpc or dhcpcd)"
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return 1
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fi
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log_ok "Network configured on $ETH_DEV"
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