108 строки
2.5 KiB
Bash
108 строки
2.5 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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IFACE="${1:-enp2s0}"
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BRIDGE="br0"
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NETPLAN_DIR="/etc/netplan"
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BACKUP_DIR="/root/virtuality-netplan-backups/$(date +%Y%m%d_%H%M%S)"
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BRIDGE_FILE="${NETPLAN_DIR}/60-virtuality-br0.yaml"
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ROLLBACK_SCRIPT="/root/virtuality-rollback-netplan.sh"
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if [[ "$EUID" -ne 0 ]]; then
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echo "Ошибка: запусти через sudo: sudo bash scripts/setup_bridge_br0.sh"
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exit 1
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fi
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if ! command -v netplan >/dev/null 2>&1; then
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echo "Ошибка: netplan не найден. Скрипт рассчитан на Ubuntu/Debian с netplan."
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exit 1
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fi
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if ! ip link show "$IFACE" >/dev/null 2>&1; then
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echo "Ошибка: интерфейс $IFACE не найден."
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ip -br a
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exit 1
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fi
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echo "============================================================"
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echo "Virtuality bridge setup"
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echo "============================================================"
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echo "Interface: $IFACE"
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echo "Bridge: $BRIDGE"
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echo "Backup: $BACKUP_DIR"
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echo
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mkdir -p "$BACKUP_DIR"
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cp -a "$NETPLAN_DIR"/*.yaml "$BACKUP_DIR"/ 2>/dev/null || true
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cat > "$ROLLBACK_SCRIPT" <<EOF
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#!/usr/bin/env bash
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set -euo pipefail
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cp -a "$BACKUP_DIR"/*.yaml "$NETPLAN_DIR"/
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rm -f "$BRIDGE_FILE"
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netplan generate
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netplan apply
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echo "Netplan rollback applied from $BACKUP_DIR"
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EOF
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chmod +x "$ROLLBACK_SCRIPT"
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cat > "$BRIDGE_FILE" <<EOF
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network:
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version: 2
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ethernets:
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${IFACE}:
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dhcp4: false
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dhcp6: false
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bridges:
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${BRIDGE}:
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interfaces:
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- ${IFACE}
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dhcp4: true
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dhcp6: false
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parameters:
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stp: false
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forward-delay: 0
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EOF
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# Disable DHCP on the original cloud-init ethernet file, if it exists.
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# We keep the file but neutralize enp2s0 to avoid duplicate DHCP on iface and bridge.
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for file in "$NETPLAN_DIR"/*.yaml; do
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[[ "$file" == "$BRIDGE_FILE" ]] && continue
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if grep -q "${IFACE}:" "$file"; then
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cp -a "$file" "${file}.virtuality-before-br0"
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cat > "$file" <<EOF
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network:
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version: 2
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ethernets:
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${IFACE}:
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dhcp4: false
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dhcp6: false
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EOF
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fi
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done
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echo "[1/4] Generated config:"
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cat "$BRIDGE_FILE"
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echo
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echo "[2/4] Validating netplan..."
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netplan generate
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echo
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echo "[3/4] Applying netplan..."
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netplan apply
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sleep 4
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echo
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echo "[4/4] Result:"
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ip -br a
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ip route
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echo
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echo "============================================================"
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echo "Bridge setup completed"
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echo "============================================================"
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echo "Rollback command if network is broken:"
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echo "sudo $ROLLBACK_SCRIPT"
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echo "============================================================"
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