针对麒麟v10系统的脚本

#!/bin/bash
#author: deepseek
#desc: change ip and hostname
#version: v2.0

# 检查是否为root用户
if [ $(id -u) -ne 0 ]; then
echo “必须使用root权限运行此脚本！”
exit 1
fi

# 定义网卡名称（需通过 `ip a` 确认实际名称）
eth0=”eth0″ # 替换为实际网卡名
eth1=”eth1″ # 替换为实际网卡名

# 1.检查参数个数
if [ $# -ne 2 ]; then
echo “Usage: $0 “
echo “Example: $0 myhost 10.0.0.100”
exit 1
fi

# 2.提取新IP地址（假设格式为 10.0.0.100）
new_ip_full=”$2″
ip_new=$(echo “$new_ip_full” | awk -F ‘.’ ‘{print $NF}’) # 提取最后一位

# 3.从当前IP提取最后一位（假设原IP为 10.0.0.X）
current_ip_full=$(hostname -I | awk ‘{print $1}’)
current_ip=$(echo “$current_ip_full” | awk -F ‘.’ ‘{print $NF}’)

# 4.新的主机名
hostname=”$1″

# 5.修改eth0的IP配置（静态IP模式）
if [ -f “/etc/sysconfig/network-scripts/ifcfg-$eth0” ]; then
sed -i “s/10.0.0.$current_ip/10.0.0.$ip_new/g” “/etc/sysconfig/network-scripts/ifcfg-$eth0”
echo “eth0 IP已修改为: 10.0.0.$ip_new”
else
echo “错误：/etc/sysconfig/network-scripts/ifcfg-$eth0 文件不存在”
exit 1
fi

# 6.修改eth1的IP配置（静态IP模式）
if [ -f “/etc/sysconfig/network-scripts/ifcfg-$eth1” ]; then
sed -i “s/172.16.1.$current_ip/172.16.1.$ip_new/g” “/etc/sysconfig/network-scripts/ifcfg-$eth1”
echo “eth1 IP已修改为: 172.16.1.$ip_new”
else
echo “错误：/etc/sysconfig/network-scripts/ifcfg-$eth1 文件不存在”
exit 1
fi

# 7.重启NetworkManager服务并重载连接
systemctl restart NetworkManager
nmcli connection reload
nmcli connection down “$eth0” && nmcli connection up “$eth0”
nmcli connection down “$eth1” && nmcli connection up “$eth1”
#7.可以用ifup和ifdown
eth0_name=eth0
eth1_name=eth1
eth0=/etc/sysconfig/network-scripts/ifcfg-$eth0_name
eth1=/etc/sysconfig/network-scripts/ifcfg-$eth1_name
ifdown $eth0_name && ifup $eth0_name
ifdwn $eth1_name && ifup $eth1_name

# 8.修改主机名
hostnamectl set-hostname “$hostname”
echo “主机名已修改为: $hostname”

# 9.验证结果（直接使用网卡名，而非文件路径）
echo -e “\n=== 修改结果 ===”
echo “当前主机名: $(hostname)”
echo “eth0 IP: $(ip -4 addr show $eth0 | grep -oP ‘(?<=inet\s)\d+(\.\d+){3}’ || echo ‘获取失败’)”
echo “eth1 IP: $(ip -4 addr show $eth1 | grep -oP ‘(?<=inet\s)\d+(\.\d+){3}’ || echo ‘获取失败’)”