first commit
This commit is contained in:
Michal Rydlikowski
649
bastion.sh
649
bastion.sh
@@ -1,30 +1,34 @@
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#!/usr/bin/env bash
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# ─────────────────────────────────────────────────────────────────────
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# Lab PXE Bastion — ephemeral PXE server for bare-metal provisioning
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# Lab PXE Bastion — discover-first bare-metal provisioning
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#
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# Turns this machine into a temporary PXE boot server. Target machines
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# on the same network can PXE boot and get Fedora installed automatically.
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# Default mode: DISCOVER. Any machine that PXE boots gets inventoried
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# and powered off. You review what appeared, then promote to install.
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#
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# Usage:
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# sudo bash bastion.sh # interactive, auto-detect everything
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# sudo TARGET_HOSTNAME=puppet SSH_PUBKEY=~/.ssh/id_ed25519.pub bash bastion.sh
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# sudo bash bastion.sh # start bastion (discover mode)
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# bash bastion.sh install <mac> <hostname> # queue discovered machine for install
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# bash bastion.sh list # show discovered/queued machines
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#
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# Flow:
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# 1. Start bastion → sudo bash bastion.sh
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# 2. Power on machine → PXE boots, hardware discovered, powers off
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# 3. Queue for install → bash bastion.sh install aa:bb:cc:dd:ee:ff puppet
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# 4. Power on again → PXE boots, Fedora installed, reboots into OS
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#
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# Requirements: Fedora/RHEL host with dnsmasq, python3, curl
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# ─────────────────────────────────────────────────────────────────────
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set -euo pipefail
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# ──── Defaults (override via environment) ──────────────────────────
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FEDORA_VERSION="${FEDORA_VERSION:-41}"
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# ──── Configuration (override via environment) ────────────────────
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FEDORA_VERSION="${FEDORA_VERSION:-43}"
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ARCH="${ARCH:-x86_64}"
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HTTP_PORT="${HTTP_PORT:-8080}"
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TARGET_HOSTNAME="${TARGET_HOSTNAME:-lab-node}"
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TARGET_DISK="${TARGET_DISK:-}" # empty = anaconda auto-picks
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SSH_PUBKEY="${SSH_PUBKEY:-}" # path to .pub file, auto-detected
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TIMEZONE="${TIMEZONE:-Europe/London}"
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LOCALE="${LOCALE:-en_GB.UTF-8}"
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BASTION_DIR="${BASTION_DIR:-/tmp/lab-bastion}"
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# ──── Colors ───────────────────────────────────────────────────────
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# ──── Colors ──────────────────────────────────────────────────────
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RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'
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CYAN='\033[0;36m'; BOLD='\033[1m'; NC='\033[0m'
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@@ -33,13 +37,83 @@ warn() { echo -e "${YELLOW}[bastion]${NC} $*"; }
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err() { echo -e "${RED}[bastion]${NC} $*" >&2; }
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die() { err "$@"; exit 1; }
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# ──── Preflight ────────────────────────────────────────────────────
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# ──── Subcommand handling ─────────────────────────────────────────
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CMD="${1:-serve}"
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case "$CMD" in
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install)
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[[ $# -ge 3 ]] || { echo "Usage: bastion.sh install <mac> <hostname> [--disk <dev>]"; exit 1; }
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MAC="$2"
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HOSTNAME="$3"
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DISK="${5:-}" # --disk <dev>
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PAYLOAD="{\"mac\":\"$MAC\",\"hostname\":\"$HOSTNAME\""
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[[ -n "$DISK" ]] && PAYLOAD="$PAYLOAD,\"disk\":\"$DISK\""
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PAYLOAD="$PAYLOAD}"
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RESULT=$(curl -sf -X POST "http://localhost:${HTTP_PORT}/api/install" \
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-H "Content-Type: application/json" \
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-d "$PAYLOAD" 2>&1) || die "Cannot reach bastion at localhost:${HTTP_PORT}. Is it running?"
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echo "$RESULT" | python3 -m json.tool 2>/dev/null || echo "$RESULT"
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echo ""
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echo "Power on the machine to start Fedora installation."
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exit 0
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;;
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list)
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RESULT=$(curl -sf "http://localhost:${HTTP_PORT}/api/machines" 2>&1) || \
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die "Cannot reach bastion at localhost:${HTTP_PORT}. Is it running?"
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echo "$RESULT" | python3 -c "
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import sys, json
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state = json.load(sys.stdin)
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discovered = state.get('discovered', {})
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queue = state.get('install_queue', {})
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installed = state.get('installed', {})
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print()
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print('\033[1mDISCOVERED\033[0m')
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if discovered:
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print(f' {\"MAC\":<20} {\"CPU\":<32} {\"CORES\":<6} {\"RAM\":<8} {\"ARCH\":<10} {\"PRODUCT\"}')
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for mac, hw in discovered.items():
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status = ' [QUEUED]' if mac in queue else ''
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print(f' {mac:<20} {hw.get(\"cpu_model\",\"?\"):<32} {hw.get(\"cpu_cores\",\"?\"):<6} {str(hw.get(\"memory_gb\",\"?\"))+\"GB\":<8} {hw.get(\"arch\",\"?\"):<10} {hw.get(\"product\",\"?\")}{status}')
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else:
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print(' (none — PXE boot a machine to discover it)')
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print()
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print('\033[1mINSTALL QUEUE\033[0m')
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if queue:
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for mac, cfg in queue.items():
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print(f' {mac:<20} → hostname={cfg.get(\"hostname\",\"?\")}')
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else:
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print(' (none)')
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print()
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print('\033[1mINSTALLED\033[0m')
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if installed:
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for mac, info in installed.items():
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print(f' {mac:<20} → {info.get(\"hostname\",\"?\")} ({info.get(\"installed_at\",\"?\")})')
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else:
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print(' (none)')
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print()
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" 2>/dev/null || echo "$RESULT"
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exit 0
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;;
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serve) ;; # continue below
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*)
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echo "Usage: bastion.sh [serve|install <mac> <hostname>|list]"
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exit 1
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;;
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esac
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# ══════════════════════════════════════════════════════════════════
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# SERVE MODE — start the bastion
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# ══════════════════════════════════════════════════════════════════
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# ──── Preflight ───────────────────────────────────────────────────
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[[ $EUID -eq 0 ]] || die "Must run as root (need DHCP/TFTP ports). Use: sudo bash bastion.sh"
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command -v python3 >/dev/null || die "python3 not found"
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command -v curl >/dev/null || die "curl not found"
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# Install dnsmasq if missing
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if ! command -v dnsmasq >/dev/null; then
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log "Installing dnsmasq..."
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if command -v dnf >/dev/null; then
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@@ -51,7 +125,7 @@ if ! command -v dnsmasq >/dev/null; then
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fi
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fi
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# ──── Auto-detect network ─────────────────────────────────────────
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# ──── Auto-detect network ────────────────────────────────────────
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IFACE="${IFACE:-$(ip route | awk '/default/ {print $5; exit}')}"
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SERVER_IP="$(ip -4 addr show "$IFACE" | awk '/inet / {split($2,a,"/"); print a[1]; exit}')"
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NETWORK="$(echo "$SERVER_IP" | awk -F. '{print $1"."$2"."$3".0"}')"
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@@ -59,35 +133,34 @@ NETWORK="$(echo "$SERVER_IP" | awk -F. '{print $1"."$2"."$3".0"}')"
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[[ -n "$SERVER_IP" ]] || die "Cannot detect IP on interface $IFACE"
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log "Interface: ${BOLD}$IFACE${NC} IP: ${BOLD}$SERVER_IP${NC} Network: ${BOLD}$NETWORK${NC}"
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# ──── Auto-detect SSH pubkey ───────────────────────────────────────
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# ──── Auto-detect SSH pubkey ──────────────────────────────────────
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SSH_PUBKEY="${SSH_PUBKEY:-}"
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if [[ -z "$SSH_PUBKEY" ]]; then
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# When run via sudo, check the real user's home
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REAL_HOME="${HOME}"
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if [[ -n "${SUDO_USER:-}" ]]; then
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REAL_HOME="$(getent passwd "$SUDO_USER" | cut -d: -f6)"
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fi
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[[ -n "${SUDO_USER:-}" ]] && REAL_HOME="$(getent passwd "$SUDO_USER" | cut -d: -f6)"
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for keyfile in "$REAL_HOME/.ssh/id_ed25519.pub" "$REAL_HOME/.ssh/id_rsa.pub" "$REAL_HOME/.ssh/id_ecdsa.pub"; do
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if [[ -f "$keyfile" ]]; then
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SSH_PUBKEY="$keyfile"
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break
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fi
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[[ -f "$keyfile" ]] && { SSH_PUBKEY="$keyfile"; break; }
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done
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fi
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SSH_KEY_CONTENT=""
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if [[ -n "$SSH_PUBKEY" && -f "$SSH_PUBKEY" ]]; then
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SSH_KEY_CONTENT="$(cat "$SSH_PUBKEY")"
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log "SSH key: ${BOLD}$SSH_PUBKEY${NC}"
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else
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warn "No SSH public key found. Root password will be set to 'changeme'."
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warn "Set SSH_PUBKEY=/path/to/key.pub to use key-based auth instead."
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SSH_KEY_CONTENT=""
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warn "No SSH public key found. Set SSH_PUBKEY=/path/to/key.pub"
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warn "Install mode will use root password 'changeme' as fallback."
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fi
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# ──── Prepare directories ─────────────────────────────────────────
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# ──── Prepare directories ────────────────────────────────────────
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TFTPDIR="$BASTION_DIR/tftp"
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HTTPDIR="$BASTION_DIR/http"
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STATEFILE="$BASTION_DIR/state.json"
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mkdir -p "$TFTPDIR" "$HTTPDIR"
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# Initialize state if not present
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[[ -f "$STATEFILE" ]] || echo '{"discovered":{},"install_queue":{},"installed":{}}' > "$STATEFILE"
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# ──── Cleanup handler ─────────────────────────────────────────────
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DNSMASQ_PID=""
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HTTP_PID=""
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@@ -96,19 +169,19 @@ FW_OPENED=false
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cleanup() {
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echo ""
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log "Shutting down..."
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[[ -n "$DNSMASQ_PID" ]] && kill "$DNSMASQ_PID" 2>/dev/null && log "Stopped dnsmasq"
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[[ -n "$HTTP_PID" ]] && kill "$HTTP_PID" 2>/dev/null && log "Stopped HTTP server"
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[[ -n "$DNSMASQ_PID" ]] && kill "$DNSMASQ_PID" 2>/dev/null && log "Stopped dnsmasq"
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if $FW_OPENED && command -v firewall-cmd >/dev/null; then
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log "Removing firewall rules..."
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firewall-cmd --quiet --remove-service=dhcp 2>/dev/null || true
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firewall-cmd --quiet --remove-service=tftp 2>/dev/null || true
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firewall-cmd --quiet --remove-port=${HTTP_PORT}/tcp 2>/dev/null || true
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firewall-cmd --quiet --remove-service=proxy-dhcp 2>/dev/null || true
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firewall-cmd --quiet --remove-port=4011/udp 2>/dev/null || true
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fi
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log "Done. Bastion artifacts remain in $BASTION_DIR"
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log "Re-run this script to reprovision. Remove with: rm -rf $BASTION_DIR"
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log "State preserved in $STATEFILE"
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log "Restart bastion with: sudo bash bastion.sh"
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}
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trap cleanup EXIT INT TERM
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@@ -131,57 +204,208 @@ download "https://boot.ipxe.org/ipxe.efi" "$TFTPDIR/ipxe.efi" "iPX
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download "${FEDORA_MIRROR}/images/pxeboot/vmlinuz" "$HTTPDIR/vmlinuz" "Fedora kernel"
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download "${FEDORA_MIRROR}/images/pxeboot/initrd.img" "$HTTPDIR/initrd.img" "Fedora initrd"
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# ──── Generate kickstart ──────────────────────────────────────────
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log "Generating kickstart for ${BOLD}${TARGET_HOSTNAME}${NC}..."
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# ──── Generate discovery kickstart ────────────────────────────────
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# Boots Fedora installer env, collects hardware info, POSTs to bastion, powers off.
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# Never touches the disk.
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cat > "$HTTPDIR/discover.ks" << 'DISCOVER_KS'
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# Lab Bastion — Discovery Mode
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# Collects hardware inventory and powers off. Does NOT install anything.
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# Disk config
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if [[ -n "$TARGET_DISK" ]]; then
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DISK_CMDS="ignoredisk --only-use=${TARGET_DISK}
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clearpart --all --initlabel --drives=${TARGET_DISK}
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autopart --type=plain"
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%pre --erroronfail --log=/tmp/discover.log
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#!/bin/bash
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set -x
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# ── Collect hardware info from /proc, /sys, and available tools ──
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MAC=$(ip link show | awk '/ether/ && !/00:00:00:00/ {print $2; exit}')
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PRODUCT=$(cat /sys/class/dmi/id/product_name 2>/dev/null || echo "unknown")
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BOARD=$(cat /sys/class/dmi/id/board_name 2>/dev/null || echo "unknown")
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SERIAL=$(cat /sys/class/dmi/id/product_serial 2>/dev/null || echo "unknown")
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MANUFACTURER=$(cat /sys/class/dmi/id/sys_vendor 2>/dev/null || echo "unknown")
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CPUMODEL=$(grep -m1 'model name' /proc/cpuinfo | cut -d: -f2 | sed 's/^ //')
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CPUCORES=$(grep -c '^processor' /proc/cpuinfo)
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MEMGB=$(awk '/MemTotal/ {printf "%d", $2/1024/1024}' /proc/meminfo)
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ARCHTYPE=$(uname -m)
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# Disk info — lsblk is available in Anaconda
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DISKS_JSON=$(lsblk -Jb -o NAME,SIZE,TYPE,MODEL 2>/dev/null | python3 -c "
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import sys, json
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data = json.load(sys.stdin)
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disks = [d for d in data.get('blockdevices', []) if d.get('type') == 'disk']
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result = []
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for d in disks:
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size_gb = round(int(d.get('size', 0)) / 1073741824, 1)
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result.append({
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'name': d.get('name', '?'),
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'size_gb': size_gb,
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'model': (d.get('model') or 'unknown').strip()
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})
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print(json.dumps(result))
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" 2>/dev/null || echo '[]')
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# Network interfaces
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NICS_JSON=$(ip -j link show 2>/dev/null | python3 -c "
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import sys, json
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nics = json.load(sys.stdin)
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result = []
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for n in nics:
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if n.get('link_type') == 'loopback':
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continue
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result.append({
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'name': n.get('ifname', '?'),
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'mac': n.get('address', '?'),
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'state': n.get('operstate', '?')
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})
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print(json.dumps(result))
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" 2>/dev/null || echo '[]')
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# ── Build and POST discovery payload ──
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PAYLOAD=$(python3 -c "
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import json
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print(json.dumps({
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'mac': '$MAC',
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'product': '$PRODUCT',
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'board': '$BOARD',
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'serial': '$SERIAL',
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'manufacturer': '$MANUFACTURER',
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'cpu_model': '$CPUMODEL',
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'cpu_cores': int('$CPUCORES' or 0),
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'memory_gb': int('$MEMGB' or 0),
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'arch': '$ARCHTYPE',
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'disks': $DISKS_JSON,
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'nics': $NICS_JSON
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}))
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")
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# POST to bastion — try curl first, fall back to python3 urllib
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BASTION_URL="__BASTION_URL__/api/discover"
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if command -v curl >/dev/null 2>&1; then
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curl -sf -X POST "$BASTION_URL" \
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-H "Content-Type: application/json" \
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-d "$PAYLOAD" || true
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else
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DISK_CMDS="clearpart --all --initlabel
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autopart --type=plain"
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python3 -c "
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import urllib.request
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req = urllib.request.Request('$BASTION_URL',
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data=b'''$PAYLOAD''',
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headers={'Content-Type': 'application/json'})
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try:
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urllib.request.urlopen(req, timeout=10)
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except Exception as e:
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print(f'POST failed: {e}')
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"
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fi
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# Auth config
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if [[ -n "$SSH_KEY_CONTENT" ]]; then
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AUTH_CMDS="rootpw --lock
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sshkey --username=root \"${SSH_KEY_CONTENT}\""
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else
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AUTH_CMDS='rootpw --plaintext changeme'
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fi
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# ── Power off — do NOT let Anaconda proceed ──
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echo ""
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echo "=== Discovery complete, powering off ==="
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echo ""
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sleep 3
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echo 1 > /proc/sys/kernel/sysrq
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echo o > /proc/sysrq-trigger
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sleep 5
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poweroff -f
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cat > "$HTTPDIR/ks.cfg" << KICKSTART
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# Lab Bastion — Fedora ${FEDORA_VERSION} kickstart
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# Generated: $(date -Iseconds)
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# Target: ${TARGET_HOSTNAME}
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%end
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# Anaconda should never get here, but just in case:
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poweroff
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DISCOVER_KS
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# Patch in the bastion URL
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sed -i "s|__BASTION_URL__|http://${SERVER_IP}:${HTTP_PORT}|g" "$HTTPDIR/discover.ks"
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# ──── Generate iPXE boot script ───────────────────────────────────
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# Initial iPXE script chains to /dispatch with the MAC, so the server
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# can route to discover or install mode per machine.
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cat > "$HTTPDIR/boot.ipxe" << IPXE
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#!ipxe
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echo
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echo ============================================
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echo Lab PXE Bastion
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echo Contacting server for instructions...
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echo ============================================
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echo
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chain http://${SERVER_IP}:${HTTP_PORT}/dispatch?mac=\${net0/mac}
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IPXE
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# ──── Write the HTTP server ──────────────────────────────────────
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cat > "$BASTION_DIR/server.py" << 'PYSERVER'
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#!/usr/bin/env python3
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"""Lab PXE Bastion — HTTP server with discovery API and per-MAC iPXE dispatch."""
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import json
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import os
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import sys
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import time
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import fcntl
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from http.server import HTTPServer, SimpleHTTPRequestHandler
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from urllib.parse import urlparse, parse_qs
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from datetime import datetime
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# Config from argv
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HTTP_DIR = sys.argv[1]
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STATE_FILE = sys.argv[2]
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SERVER_IP = sys.argv[3]
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HTTP_PORT = int(sys.argv[4])
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FEDORA_VER = sys.argv[5]
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FEDORA_MIRROR = sys.argv[6]
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SSH_KEY = sys.argv[7] if len(sys.argv) > 7 else ""
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TIMEZONE = sys.argv[8] if len(sys.argv) > 8 else "Europe/London"
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LOCALE = sys.argv[9] if len(sys.argv) > 9 else "en_GB.UTF-8"
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# ── State management (file-backed, lock-protected) ───────────────
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def load_state():
|
||||
try:
|
||||
with open(STATE_FILE) as f:
|
||||
return json.load(f)
|
||||
except (FileNotFoundError, json.JSONDecodeError):
|
||||
return {"discovered": {}, "install_queue": {}, "installed": {}}
|
||||
|
||||
def save_state(state):
|
||||
tmp = STATE_FILE + ".tmp"
|
||||
with open(tmp, 'w') as f:
|
||||
json.dump(state, f, indent=2)
|
||||
os.replace(tmp, STATE_FILE)
|
||||
|
||||
# ── Kickstart generation ─────────────────────────────────────────
|
||||
|
||||
def generate_kickstart(hostname, disk="", ssh_key=""):
|
||||
disk_cmds = "clearpart --all --initlabel\nautopart --type=plain"
|
||||
if disk:
|
||||
disk_cmds = f"ignoredisk --only-use={disk}\nclearpart --all --initlabel --drives={disk}\nautopart --type=plain"
|
||||
|
||||
if ssh_key:
|
||||
auth = f'rootpw --lock\nsshkey --username=root "{ssh_key}"'
|
||||
else:
|
||||
auth = 'rootpw --plaintext changeme'
|
||||
|
||||
return f"""# Lab Bastion — Fedora {FEDORA_VER} install
|
||||
# Generated: {datetime.now().isoformat()}
|
||||
# Target: {hostname}
|
||||
|
||||
# Install mode
|
||||
text
|
||||
reboot
|
||||
|
||||
# Locale
|
||||
lang ${LOCALE}
|
||||
lang {LOCALE}
|
||||
keyboard uk
|
||||
timezone ${TIMEZONE} --utc
|
||||
timezone {TIMEZONE} --utc
|
||||
|
||||
# Network
|
||||
network --bootproto=dhcp --activate --hostname=${TARGET_HOSTNAME}
|
||||
network --bootproto=dhcp --activate --hostname={hostname}
|
||||
|
||||
# Auth
|
||||
${AUTH_CMDS}
|
||||
{auth}
|
||||
|
||||
# Disk
|
||||
${DISK_CMDS}
|
||||
{disk_cmds}
|
||||
|
||||
# Bootloader
|
||||
bootloader --append="console=tty0 console=ttyS0,115200n8"
|
||||
|
||||
# Install source
|
||||
url --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=fedora-\$releasever&arch=\$basearch
|
||||
url --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=fedora-$releasever&arch=$basearch
|
||||
|
||||
# Packages — minimal server + essentials
|
||||
%packages
|
||||
@core
|
||||
@server-product
|
||||
@@ -191,51 +415,241 @@ tmux
|
||||
git
|
||||
curl
|
||||
python3
|
||||
lshw
|
||||
dmidecode
|
||||
dnf-plugins-core
|
||||
%end
|
||||
|
||||
# Post-install
|
||||
%post --log=/root/bastion-post-install.log
|
||||
#!/bin/bash
|
||||
set -x
|
||||
|
||||
# Ensure SSH is enabled
|
||||
systemctl enable --now sshd
|
||||
|
||||
# Allow root SSH with key (password auth disabled)
|
||||
sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin prohibit-password/' /etc/ssh/sshd_config
|
||||
sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config
|
||||
|
||||
# Set hostname
|
||||
hostnamectl set-hostname ${TARGET_HOSTNAME}
|
||||
|
||||
# Leave a breadcrumb
|
||||
sed -i 's/^#\\?PermitRootLogin.*/PermitRootLogin prohibit-password/' /etc/ssh/sshd_config
|
||||
sed -i 's/^#\\?PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config
|
||||
hostnamectl set-hostname {hostname}
|
||||
echo "Provisioned by lab-bastion on $(date -Iseconds)" > /etc/lab-provisioned
|
||||
|
||||
# Placeholder: puppet enrollment will go here later
|
||||
# puppet is not installed yet — this IS the puppet server
|
||||
echo "# Lab bootstrap node — puppet server setup pending" > /root/README
|
||||
|
||||
echo "# Lab node — puppet enrollment pending" > /root/README
|
||||
%end
|
||||
KICKSTART
|
||||
"""
|
||||
|
||||
log "Kickstart written to ${HTTPDIR}/ks.cfg"
|
||||
# ── Pretty terminal output ────────────────────────────────────────
|
||||
|
||||
# ──── Generate iPXE boot script ───────────────────────────────────
|
||||
cat > "$HTTPDIR/boot.ipxe" << IPXE
|
||||
#!ipxe
|
||||
RESET = "\033[0m"
|
||||
BOLD = "\033[1m"
|
||||
GREEN = "\033[0;32m"
|
||||
YELLOW = "\033[1;33m"
|
||||
CYAN = "\033[0;36m"
|
||||
RED = "\033[0;31m"
|
||||
|
||||
def print_discovery(mac, hw, is_new):
|
||||
"""Print a discovered machine to the bastion terminal."""
|
||||
label = "NEW MACHINE DISCOVERED" if is_new else "MACHINE RE-DISCOVERED"
|
||||
color = GREEN if is_new else YELLOW
|
||||
|
||||
# Format disk summary
|
||||
disks = hw.get('disks', [])
|
||||
disk_str = ", ".join(
|
||||
f"{d.get('size_gb', '?')}GB {d.get('model', '?')}"
|
||||
for d in disks
|
||||
) or "none detected"
|
||||
|
||||
# Format NIC summary
|
||||
nics = hw.get('nics', [])
|
||||
nic_str = ", ".join(n.get('name', '?') for n in nics) or "none"
|
||||
|
||||
print(f"\n{color}{BOLD}{'═' * 60}")
|
||||
print(f" {label}")
|
||||
print(f"{'═' * 60}{RESET}")
|
||||
print(f" {BOLD}MAC:{RESET} {mac}")
|
||||
print(f" {BOLD}Product:{RESET} {hw.get('manufacturer', '?')} {hw.get('product', '?')}")
|
||||
print(f" {BOLD}CPU:{RESET} {hw.get('cpu_model', '?')} ({hw.get('cpu_cores', '?')} cores)")
|
||||
print(f" {BOLD}RAM:{RESET} {hw.get('memory_gb', '?')} GB")
|
||||
print(f" {BOLD}Arch:{RESET} {hw.get('arch', '?')}")
|
||||
print(f" {BOLD}Disks:{RESET} {disk_str}")
|
||||
print(f" {BOLD}NICs:{RESET} {nic_str}")
|
||||
print(f" {BOLD}Serial:{RESET} {hw.get('serial', '?')}")
|
||||
print()
|
||||
print(f" {CYAN}To install Fedora on this machine:{RESET}")
|
||||
print(f" {BOLD}bash bastion.sh install {mac} <hostname>{RESET}")
|
||||
print(f"\n{'─' * 60}\n", flush=True)
|
||||
|
||||
def print_install_queued(mac, hostname):
|
||||
print(f"\n{GREEN}{BOLD} INSTALL QUEUED{RESET}")
|
||||
print(f" {mac} → hostname={BOLD}{hostname}{RESET}")
|
||||
print(f" PXE boot the machine to start Fedora installation.")
|
||||
print(f"\n{'─' * 60}\n", flush=True)
|
||||
|
||||
def print_install_started(mac, hostname):
|
||||
print(f"\n{CYAN}{BOLD} INSTALL STARTED{RESET}")
|
||||
print(f" {mac} → {BOLD}{hostname}{RESET}")
|
||||
print(f" Serving Fedora {FEDORA_VER} installer + kickstart...")
|
||||
print(f"\n{'─' * 60}\n", flush=True)
|
||||
|
||||
# ── HTTP Handler ──────────────────────────────────────────────────
|
||||
|
||||
class BastionHandler(SimpleHTTPRequestHandler):
|
||||
def __init__(self, *args, **kwargs):
|
||||
super().__init__(*args, directory=HTTP_DIR, **kwargs)
|
||||
|
||||
def log_message(self, format, *args):
|
||||
"""Suppress default HTTP access logs — we have our own output."""
|
||||
pass
|
||||
|
||||
def send_text(self, code, text, content_type="text/plain"):
|
||||
self.send_response(code)
|
||||
self.send_header("Content-Type", content_type)
|
||||
self.end_headers()
|
||||
self.wfile.write(text.encode())
|
||||
|
||||
def send_json(self, code, data):
|
||||
self.send_text(code, json.dumps(data, indent=2), "application/json")
|
||||
|
||||
def do_GET(self):
|
||||
parsed = urlparse(self.path)
|
||||
|
||||
# ── iPXE dispatch: route to discover or install based on MAC ──
|
||||
if parsed.path == "/dispatch":
|
||||
params = parse_qs(parsed.query)
|
||||
mac = params.get("mac", [""])[0].lower().replace("-", ":")
|
||||
state = load_state()
|
||||
|
||||
if mac in state.get("install_queue", {}):
|
||||
cfg = state["install_queue"][mac]
|
||||
hostname = cfg.get("hostname", "lab-node")
|
||||
print_install_started(mac, hostname)
|
||||
script = f"""#!ipxe
|
||||
|
||||
echo
|
||||
echo =======================================
|
||||
echo Lab PXE Bastion — Fedora ${FEDORA_VERSION}
|
||||
echo Target: ${TARGET_HOSTNAME}
|
||||
echo =======================================
|
||||
echo =============================================
|
||||
echo Lab PXE Bastion — INSTALLING Fedora {FEDORA_VER}
|
||||
echo Target: {hostname}
|
||||
echo MAC: {mac}
|
||||
echo =============================================
|
||||
echo
|
||||
|
||||
kernel http://${SERVER_IP}:${HTTP_PORT}/vmlinuz inst.ks=http://${SERVER_IP}:${HTTP_PORT}/ks.cfg inst.repo=${FEDORA_MIRROR} inst.text
|
||||
initrd http://${SERVER_IP}:${HTTP_PORT}/initrd.img
|
||||
kernel http://{SERVER_IP}:{HTTP_PORT}/vmlinuz inst.ks=http://{SERVER_IP}:{HTTP_PORT}/ks?mac={mac} inst.repo={FEDORA_MIRROR} inst.text
|
||||
initrd http://{SERVER_IP}:{HTTP_PORT}/initrd.img
|
||||
boot
|
||||
IPXE
|
||||
"""
|
||||
self.send_text(200, script)
|
||||
else:
|
||||
print(f" {YELLOW}PXE request from {mac} → discovery mode{RESET}", flush=True)
|
||||
script = f"""#!ipxe
|
||||
|
||||
echo
|
||||
echo =============================================
|
||||
echo Lab PXE Bastion — DISCOVERY MODE
|
||||
echo MAC: {mac}
|
||||
echo Collecting hardware info...
|
||||
echo =============================================
|
||||
echo
|
||||
|
||||
kernel http://{SERVER_IP}:{HTTP_PORT}/vmlinuz inst.ks=http://{SERVER_IP}:{HTTP_PORT}/discover.ks inst.text
|
||||
initrd http://{SERVER_IP}:{HTTP_PORT}/initrd.img
|
||||
boot
|
||||
"""
|
||||
self.send_text(200, script)
|
||||
return
|
||||
|
||||
# ── Per-MAC kickstart for install mode ──
|
||||
if parsed.path == "/ks":
|
||||
params = parse_qs(parsed.query)
|
||||
mac = params.get("mac", [""])[0].lower().replace("-", ":")
|
||||
state = load_state()
|
||||
cfg = state.get("install_queue", {}).get(mac, {})
|
||||
ks = generate_kickstart(
|
||||
hostname=cfg.get("hostname", "lab-node"),
|
||||
disk=cfg.get("disk", ""),
|
||||
ssh_key=SSH_KEY,
|
||||
)
|
||||
self.send_text(200, ks)
|
||||
return
|
||||
|
||||
# ── API: list machines ──
|
||||
if parsed.path == "/api/machines":
|
||||
self.send_json(200, load_state())
|
||||
return
|
||||
|
||||
# ── Static files (vmlinuz, initrd, discover.ks, etc.) ──
|
||||
super().do_GET()
|
||||
|
||||
def do_POST(self):
|
||||
parsed = urlparse(self.path)
|
||||
content_length = int(self.headers.get("Content-Length", 0))
|
||||
body = self.rfile.read(content_length)
|
||||
|
||||
# ── Discovery report from PXE-booted machine ──
|
||||
if parsed.path == "/api/discover":
|
||||
try:
|
||||
data = json.loads(body)
|
||||
except json.JSONDecodeError:
|
||||
self.send_json(400, {"error": "invalid JSON"})
|
||||
return
|
||||
|
||||
mac = data.get("mac", "unknown").lower()
|
||||
data["last_seen"] = datetime.now().isoformat()
|
||||
|
||||
state = load_state()
|
||||
is_new = mac not in state.get("discovered", {})
|
||||
if is_new:
|
||||
data["first_seen"] = data["last_seen"]
|
||||
else:
|
||||
data["first_seen"] = state["discovered"][mac].get("first_seen", data["last_seen"])
|
||||
|
||||
state.setdefault("discovered", {})[mac] = data
|
||||
save_state(state)
|
||||
|
||||
print_discovery(mac, data, is_new)
|
||||
|
||||
self.send_json(200, {"status": "ok", "mac": mac, "new": is_new})
|
||||
return
|
||||
|
||||
# ── Queue a machine for install ──
|
||||
if parsed.path == "/api/install":
|
||||
try:
|
||||
data = json.loads(body)
|
||||
except json.JSONDecodeError:
|
||||
self.send_json(400, {"error": "invalid JSON"})
|
||||
return
|
||||
|
||||
mac = data.get("mac", "").lower().replace("-", ":")
|
||||
hostname = data.get("hostname", "lab-node")
|
||||
disk = data.get("disk", "")
|
||||
|
||||
if not mac:
|
||||
self.send_json(400, {"error": "mac is required"})
|
||||
return
|
||||
|
||||
state = load_state()
|
||||
state.setdefault("install_queue", {})[mac] = {
|
||||
"hostname": hostname,
|
||||
"disk": disk,
|
||||
"queued_at": datetime.now().isoformat(),
|
||||
}
|
||||
save_state(state)
|
||||
|
||||
print_install_queued(mac, hostname)
|
||||
|
||||
self.send_json(200, {
|
||||
"status": "queued",
|
||||
"mac": mac,
|
||||
"hostname": hostname,
|
||||
"message": "PXE boot the machine to start installation",
|
||||
})
|
||||
return
|
||||
|
||||
self.send_json(404, {"error": "not found"})
|
||||
|
||||
|
||||
def run_server():
|
||||
server = HTTPServer(("0.0.0.0", HTTP_PORT), BastionHandler)
|
||||
print(f"HTTP server listening on :{HTTP_PORT}", flush=True)
|
||||
server.serve_forever()
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
run_server()
|
||||
PYSERVER
|
||||
|
||||
# ──── Generate dnsmasq config ─────────────────────────────────────
|
||||
cat > "$BASTION_DIR/dnsmasq.conf" << DNSMASQ
|
||||
@@ -271,65 +685,72 @@ dhcp-boot=tag:efi64,tag:!ipxe,ipxe.efi
|
||||
# iPXE clients → chain to boot script via HTTP
|
||||
dhcp-boot=tag:ipxe,http://${SERVER_IP}:${HTTP_PORT}/boot.ipxe
|
||||
|
||||
# Verbose logging (see what's happening)
|
||||
# Verbose logging
|
||||
log-dhcp
|
||||
DNSMASQ
|
||||
|
||||
# ──── Open firewall ───────────────────────────────────────────────
|
||||
# ──── Open firewall ──────────────────────────────────────────────
|
||||
if command -v firewall-cmd >/dev/null && firewall-cmd --state >/dev/null 2>&1; then
|
||||
log "Opening firewall ports (DHCP, TFTP, HTTP:${HTTP_PORT})..."
|
||||
firewall-cmd --quiet --add-service=dhcp
|
||||
firewall-cmd --quiet --add-service=tftp
|
||||
firewall-cmd --quiet --add-port=${HTTP_PORT}/tcp
|
||||
# ProxyDHCP uses port 4011
|
||||
firewall-cmd --quiet --add-port=4011/udp 2>/dev/null || true
|
||||
FW_OPENED=true
|
||||
fi
|
||||
|
||||
# ──── Stop conflicting services ───────────────────────────────────
|
||||
# dnsmasq might be running as a system service
|
||||
if systemctl is-active --quiet dnsmasq 2>/dev/null; then
|
||||
warn "System dnsmasq is running — stopping it temporarily"
|
||||
systemctl stop dnsmasq
|
||||
RESTART_DNSMASQ=true
|
||||
fi
|
||||
|
||||
# ──── Start HTTP server ───────────────────────────────────────────
|
||||
# ──── Start HTTP server ──────────────────────────────────────────
|
||||
log "Starting HTTP server on :${HTTP_PORT}..."
|
||||
(cd "$HTTPDIR" && python3 -m http.server "$HTTP_PORT" --bind 0.0.0.0 >/dev/null 2>&1) &
|
||||
python3 "$BASTION_DIR/server.py" \
|
||||
"$HTTPDIR" \
|
||||
"$STATEFILE" \
|
||||
"$SERVER_IP" \
|
||||
"$HTTP_PORT" \
|
||||
"$FEDORA_VERSION" \
|
||||
"$FEDORA_MIRROR" \
|
||||
"$SSH_KEY_CONTENT" \
|
||||
"$TIMEZONE" \
|
||||
"$LOCALE" &
|
||||
HTTP_PID=$!
|
||||
sleep 0.5
|
||||
sleep 1
|
||||
|
||||
if ! kill -0 "$HTTP_PID" 2>/dev/null; then
|
||||
die "HTTP server failed to start — is port ${HTTP_PORT} in use?"
|
||||
fi
|
||||
|
||||
# ──── Start dnsmasq (proxyDHCP + TFTP) ────────────────────────────
|
||||
# ──── Start dnsmasq ──────────────────────────────────────────────
|
||||
log "Starting PXE server (proxyDHCP on ${IFACE})..."
|
||||
echo ""
|
||||
echo -e "${CYAN}${BOLD}════════════════════════════════════════════════════════${NC}"
|
||||
echo -e "${CYAN}${BOLD} PXE Bastion ready!${NC}"
|
||||
echo -e "${CYAN}${BOLD}════════════════════════════════════════════════════════${NC}"
|
||||
echo -e "${CYAN}${BOLD}════════════════════════════════════════════════════════════${NC}"
|
||||
echo -e "${CYAN}${BOLD} Lab PXE Bastion — Discovery Mode${NC}"
|
||||
echo -e "${CYAN}${BOLD}════════════════════════════════════════════════════════════${NC}"
|
||||
echo ""
|
||||
echo -e " Network: ${BOLD}${NETWORK}/24${NC} via ${BOLD}${IFACE}${NC}"
|
||||
echo -e " HTTP: ${BOLD}http://${SERVER_IP}:${HTTP_PORT}/${NC}"
|
||||
echo -e " OS: ${BOLD}Fedora ${FEDORA_VERSION} (${ARCH})${NC}"
|
||||
echo -e " Hostname: ${BOLD}${TARGET_HOSTNAME}${NC}"
|
||||
echo -e " Kickstart: ${BOLD}http://${SERVER_IP}:${HTTP_PORT}/ks.cfg${NC}"
|
||||
echo -e " State: ${BOLD}${STATEFILE}${NC}"
|
||||
echo ""
|
||||
echo -e " ${YELLOW}Now PXE-boot the target machine.${NC}"
|
||||
echo -e " ${YELLOW}Set boot order to Network/PXE in BIOS, or use one-time boot menu.${NC}"
|
||||
echo -e " ${YELLOW}PXE boot any machine on this network.${NC}"
|
||||
echo -e " ${YELLOW}It will be inventoried and powered off automatically.${NC}"
|
||||
echo ""
|
||||
echo -e " Press ${BOLD}Ctrl-C${NC} to stop the bastion."
|
||||
echo -e " Commands (from another terminal):"
|
||||
echo -e " ${BOLD}bash bastion.sh list${NC} — show machines"
|
||||
echo -e " ${BOLD}bash bastion.sh install <mac> <hostname>${NC} — queue install"
|
||||
echo ""
|
||||
echo -e "${CYAN}──── dnsmasq log (watch for DHCP/PXE requests) ────${NC}"
|
||||
echo -e " Press ${BOLD}Ctrl-C${NC} to stop."
|
||||
echo ""
|
||||
echo -e "${CYAN}──── Waiting for PXE boot requests... ────${NC}"
|
||||
echo ""
|
||||
|
||||
# Run dnsmasq in foreground so logs stream to terminal
|
||||
dnsmasq --no-daemon --conf-file="$BASTION_DIR/dnsmasq.conf" &
|
||||
DNSMASQ_PID=$!
|
||||
|
||||
# Wait for dnsmasq — if it exits, something went wrong
|
||||
wait "$DNSMASQ_PID" || {
|
||||
err "dnsmasq exited unexpectedly. Check if another DHCP/TFTP service is running."
|
||||
err "Try: ss -ulnp | grep -E ':(67|69|4011) '"
|
||||
|
||||
Reference in New Issue
Block a user