proxmox/scripts/unifi/change-ip-to-vlan11-netplan.sh

#!/usr/bin/env bash
set -euo pipefail

# Load IP configuration
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
source "${PROJECT_ROOT}/config/ip-addresses.conf" 2>/dev/null || true


# Change dev machine IP to ${IP_SERVICE_4:-${IP_SERVICE_4:-192.168.11.4}} using netplan
# Usage: sudo ./scripts/unifi/change-ip-to-vlan11-netplan.sh

set -e

INTERFACE="eth0"
NEW_IP="${IP_SERVICE_4:-${IP_SERVICE_4:-192.168.11.4}}"
NEW_GATEWAY="${NETWORK_GATEWAY:-192.168.11.1}"
NEW_DNS="${NETWORK_GATEWAY:-192.168.11.1}"

echo "🔧 Changing IP address to $NEW_IP for interface $INTERFACE using netplan"
echo ""

# Check if running as root
if [ "$EUID" -ne 0 ]; then 
    echo "❌ Please run as root (use sudo)"
    exit 1
fi

# Find netplan config file
NETPLAN_FILE=$(ls /etc/netplan/*.yaml 2>/dev/null | head -1)
if [ -z "$NETPLAN_FILE" ]; then
    echo "❌ No netplan config file found in /etc/netplan/"
    exit 1
fi

echo "📋 Found netplan config: $NETPLAN_FILE"
echo ""

# Backup original config
BACKUP_FILE="${NETPLAN_FILE}.backup.$(date +%Y%m%d_%H%M%S)"
cp "$NETPLAN_FILE" "$BACKUP_FILE"
echo "✅ Backup created: $BACKUP_FILE"
echo ""

# Read current config
CURRENT_CONFIG=$(cat "$NETPLAN_FILE")

# Check if interface exists in config
if ! echo "$CURRENT_CONFIG" | grep -q "$INTERFACE"; then
    echo "⚠️  Interface $INTERFACE not found in config"
    echo "Current config:"
    cat "$NETPLAN_FILE"
    echo ""
    echo "Please manually edit $NETPLAN_FILE to add $INTERFACE configuration"
    exit 1
fi

# Create new config (preserve structure, update IP settings)
echo "🔄 Updating netplan configuration..."

# Use Python to safely update YAML
python3 << EOF
import yaml
import sys

# Read current config
with open("$NETPLAN_FILE", 'r') as f:
    config = yaml.safe_load(f)

# Update network configuration
if 'network' not in config:
    config['network'] = {}

if 'ethernets' not in config['network']:
    config['network']['ethernets'] = {}

if '$INTERFACE' not in config['network']['ethernets']:
    config['network']['ethernets']['$INTERFACE'] = {}

# Update interface settings
config['network']['ethernets']['$INTERFACE']['addresses'] = ['$NEW_IP/24']
config['network']['ethernets']['$INTERFACE']['gateway4'] = '$NEW_GATEWAY'
config['network']['ethernets']['$INTERFACE']['nameservers'] = {
    'addresses': ['$NEW_DNS', '8.8.8.8']
}

# Write updated config
with open("$NETPLAN_FILE", 'w') as f:
    yaml.dump(config, f, default_flow_style=False, sort_keys=False)

print("✅ Configuration updated")
EOF

if [ $? -ne 0 ]; then
    echo "❌ Failed to update config. Restoring backup..."
    cp "$BACKUP_FILE" "$NETPLAN_FILE"
    exit 1
fi

echo ""
echo "📋 New configuration:"
cat "$NETPLAN_FILE"
echo ""

# Validate netplan config
echo "🔍 Validating netplan configuration..."
if netplan try --timeout 5 >/dev/null 2>&1; then
    echo "✅ Configuration is valid"
    echo ""
    echo "🔄 Applying netplan configuration..."
    netplan apply
    echo "✅ Configuration applied"
else
    echo "⚠️  Validation failed. Restoring backup..."
    cp "$BACKUP_FILE" "$NETPLAN_FILE"
    netplan apply
    exit 1
fi

# Wait for network to stabilize
sleep 3

# Verify new IP
echo ""
echo "🔍 Verifying new IP configuration..."
NEW_IP_CHECK=$(ip addr show $INTERFACE 2>/dev/null | grep -oP 'inet \K[\d.]+' | head -1)
if [ "$NEW_IP_CHECK" = "$NEW_IP" ]; then
    echo "✅ IP address successfully changed to $NEW_IP"
else
    echo "⚠️  IP address check: $NEW_IP_CHECK (expected $NEW_IP)"
    echo "   This may take a few more seconds..."
    sleep 5
    NEW_IP_CHECK=$(ip addr show $INTERFACE 2>/dev/null | grep -oP 'inet \K[\d.]+' | head -1)
    if [ "$NEW_IP_CHECK" = "$NEW_IP" ]; then
        echo "✅ IP address is now $NEW_IP"
    else
        echo "⚠️  IP address is $NEW_IP_CHECK (expected $NEW_IP)"
    fi
fi

# Test gateway
echo ""
echo "🧪 Testing gateway connectivity..."
if ping -c 1 -W 2 $NEW_GATEWAY >/dev/null 2>&1; then
    echo "✅ Gateway $NEW_GATEWAY is reachable"
else
    echo "⚠️  Gateway $NEW_GATEWAY is not reachable"
fi

# Test ml110
echo ""
echo "🧪 Testing ml110 connectivity..."
if ping -c 1 -W 2 ${PROXMOX_HOST_ML110:-192.168.11.10} >/dev/null 2>&1; then
    echo "✅ ml110 (${PROXMOX_HOST_ML110:-192.168.11.10}) is reachable!"
    echo ""
    echo "🎉 SUCCESS! You can now access ml110!"
else
    echo "⚠️  ml110 (${PROXMOX_HOST_ML110:-192.168.11.10}) is not reachable"
    echo "   This may be due to firewall on ml110"
    echo "   Check ml110 firewall settings"
fi

echo ""
echo "✅ IP change complete!"
echo ""
echo "📋 Current configuration:"
ip addr show $INTERFACE | grep "inet " || echo "   (checking...)"
ip route show | grep default || echo "   (checking...)"

echo ""
echo "💡 To revert back to original IP:"
echo "   sudo cp $BACKUP_FILE $NETPLAN_FILE"
echo "   sudo netplan apply"