136 lines
4.2 KiB
Bash
Executable File
136 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
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# 功能：修复Ubuntu Server长时间无网络活动导致网络关闭的问题
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# 使用方法：sudo bash fix_network_sleep.sh
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# 检查是否以root权限运行
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if [ "$(id -u)" -ne 0 ]; then
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echo "错误：请使用root权限运行此脚本（sudo bash $0）" >&2
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exit 1
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fi
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# 检测网卡名称（获取第一个活动的以太网接口）
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get_active_nic() {
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# 排除lo和docker等虚拟接口，获取第一个物理以太网接口
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nic=$(ip -br link show | grep -v 'LOOPBACK' | grep -v 'DOCKER' | grep 'UP' | awk '{print $1}' | head -n 1)
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if [ -z "$nic" ]; then
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# 如果没有找到活动接口，获取第一个以太网接口
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nic=$(ip -br link show | grep -v 'LOOPBACK' | grep -v 'DOCKER' | awk '{print $1}' | head -n 1)
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fi
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echo "$nic"
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}
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NIC=$(get_active_nic)
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if [ -z "$NIC" ]; then
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echo "错误：未检测到网络接口，请检查网络配置"
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exit 1
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fi
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echo "检测到活动网络接口：$NIC"
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# 备份相关配置文件
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backup_configs() {
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echo "正在备份配置文件..."
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[ -d /etc/systemd/system/ ] && cp -n /etc/systemd/system/disable-nic-powersave.service /etc/systemd/system/disable-nic-powersave.service.bak 2>/dev/null
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}
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# 临时禁用网卡节能模式（立即生效）
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disable_nic_powersave_temp() {
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echo "正在临时禁用网卡节能模式..."
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if command -v ethtool &> /dev/null; then
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# 禁用EEE节能
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sudo ethtool --change "$NIC" eee off 2>/dev/null
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# 禁用电源管理
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sudo ethtool -s "$NIC" power management off 2>/dev/null
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# 启用WOL功能
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sudo ethtool -s "$NIC" wol g 2>/dev/null
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else
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echo "警告：未安装ethtool，正在安装..."
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sudo apt update >/dev/null
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sudo apt install -y ethtool >/dev/null
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disable_nic_powersave_temp
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fi
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}
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# 永久禁用网卡节能模式（系统启动时生效）
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disable_nic_powersave_permanent() {
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echo "正在配置永久禁用网卡节能模式..."
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# 创建systemd服务
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cat << EOF | sudo tee /etc/systemd/system/disable-nic-powersave.service > /dev/null
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[Unit]
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Description=Disable NIC Power Saving Mode for $NIC
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After=network.target
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[Service]
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Type=oneshot
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ExecStart=/usr/sbin/ethtool -s $NIC wol g
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ExecStart=/usr/sbin/ethtool --change $NIC eee off
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ExecStart=/usr/sbin/ethtool --change $NIC power management off
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[Install]
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WantedBy=multi-user.target
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EOF
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# 启用并启动服务
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sudo systemctl daemon-reload
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sudo systemctl enable disable-nic-powersave.service
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sudo systemctl start disable-nic-powersave.service
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}
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# 优化SSH保持连接设置
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optimize_ssh_settings() {
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echo "正在优化SSH连接设置..."
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SSH_CONFIG="/etc/ssh/sshd_config"
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# 备份SSH配置
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[ -f "$SSH_CONFIG" ] && cp -n "$SSH_CONFIG" "$SSH_CONFIG.bak"
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# 设置SSH心跳检测
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if ! grep -q "^ClientAliveInterval" "$SSH_CONFIG"; then
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echo "ClientAliveInterval 60" >> "$SSH_CONFIG"
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else
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sed -i 's/^ClientAliveInterval.*/ClientAliveInterval 60/' "$SSH_CONFIG"
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fi
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if ! grep -q "^ClientAliveCountMax" "$SSH_CONFIG"; then
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echo "ClientAliveCountMax 3" >> "$SSH_CONFIG"
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else
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sed -i 's/^ClientAliveCountMax.*/ClientAliveCountMax 3/' "$SSH_CONFIG"
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fi
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# 重启SSH服务
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sudo systemctl restart sshd
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}
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# 检查并修复DNS服务问题
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fix_dns_service() {
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echo "正在检查DNS服务..."
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if ! systemctl is-active --quiet systemd-resolved; then
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echo "修复DNS服务问题..."
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sudo apt update >/dev/null
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sudo apt install --reinstall -y systemd-resolved >/dev/null
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sudo systemctl enable --now systemd-resolved
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fi
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}
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# 显示当前网卡电源管理状态
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show_status() {
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echo -e "\n当前网络接口状态："
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echo "-------------------------"
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ip link show "$NIC" | grep -A 1 "$NIC"
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echo -e "\n电源管理状态："
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ethtool "$NIC" | grep -iE "power management|energy"
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echo "-------------------------"
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echo "配置已完成，建议重启系统使所有设置生效"
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echo "重启命令：sudo reboot"
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}
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# 主流程执行
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backup_configs
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disable_nic_powersave_temp
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disable_nic_powersave_permanent
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optimize_ssh_settings
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fix_dns_service
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show_status
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