Adolfo Delorenzo
e372df578b
Complete Phase 1 implementation of KubeSolo OS — an immutable, bootable Linux distribution built on Tiny Core Linux for running KubeSolo single-node Kubernetes. Build system: - Makefile with fetch, rootfs, initramfs, iso, disk-image targets - Dockerfile.builder for reproducible builds - Scripts to download Tiny Core, extract rootfs, inject KubeSolo, pack initramfs, and create bootable ISO/disk images Init system (10 POSIX sh stages): - Early mount (proc/sys/dev/cgroup2), cmdline parsing, persistent mount with bind-mounts, kernel module loading, sysctl, DHCP networking, hostname, clock sync, containerd prep, KubeSolo exec Shared libraries: - functions.sh (device wait, IP lookup, config helpers) - network.sh (static IP, config persistence, interface detection) - health.sh (containerd, API server, node readiness checks) - Emergency shell for boot failure debugging Testing: - QEMU boot test with serial log marker detection - K8s readiness test with kubectl verification - Persistence test (reboot + verify state survives) - Workload deployment test (nginx pod) - Local storage test (PVC + local-path provisioner) - Network policy test - Reusable run-vm.sh launcher Developer tools: - dev-vm.sh (interactive QEMU with port forwarding) - rebuild-initramfs.sh (fast iteration) - inject-ssh.sh (dropbear SSH for debugging) - extract-kernel-config.sh + kernel-audit.sh Documentation: - Full design document with architecture research - Boot flow documentation covering all 10 init stages - Cloud-init examples (DHCP, static IP, Portainer Edge, air-gapped) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
65 lines
1.8 KiB
Bash
Executable File
65 lines
1.8 KiB
Bash
Executable File
#!/bin/sh
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# 50-network.sh — Configure networking
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# Priority: persistent config > cloud-init > DHCP fallback
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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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# Check for cloud-init network config
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CLOUDINIT_FILE="${KUBESOLO_CLOUDINIT:-$DATA_MOUNT/etc-kubesolo/cloud-init.yaml}"
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if [ -f "$CLOUDINIT_FILE" ]; then
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log "Cloud-init found: $CLOUDINIT_FILE"
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# Phase 1: simple parsing — extract network stanza
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# TODO: Replace with proper cloud-init parser (Go binary) in Phase 2
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log_warn "Cloud-init network parsing not yet implemented — falling back to DHCP"
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fi
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# Fallback: DHCP on first non-loopback interface
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log "Configuring network via DHCP"
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# Bring up loopback
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ip link set lo up
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ip addr add 127.0.0.1/8 dev lo
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# Find first ethernet interface
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ETH_DEV=""
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for iface in /sys/class/net/*; do
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iface="$(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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