服务器上如何拆分VPS

2025-07-08 服务器新闻阅读 31

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在服务器管理中,有时候我们需要根据业务需求将一个虚拟专用服务器（VPS）拆分成多个小VPS，以便更灵活地分配资源，本文将详细介绍如何在服务器上拆分VPS。

服务器上如何拆分VPS

什么是VPS？

VPS（Virtual Private Server）是一种基于物理服务器的虚拟化服务，用户可以在一个物理服务器上运行多个虚拟服务器，每个虚拟服务器都有独立的IP地址、操作系统和应用程序，拆分VPS就是将一个大VPS分割成多个小VPS。

拆分VPS的目的

拆分VPS的主要目的是为了：

优化资源分配：根据业务需求，将资源按需分配。
扩展容量：通过拆分VPS，可以快速扩展资源。
隔离环境：将不同的环境（如开发、测试、生产）隔离，避免相互干扰。

拆分VPS的步骤

准备工作

在拆分VPS之前,需要完成以下准备工作：

备份数据：确保原VPS和新拆分的VPS的数据安全。
断开原VPS的连接：避免在拆分过程中影响其他服务。

在Linux系统中拆分VPS

在Linux系统中,拆分VPS可以通过修改配置文件和使用shell脚本来实现。

1 修改etc/sysctl.conf

在Linux系统中,可以通过修改sysctl.conf文件来限制VPS的资源使用。

sudo nano /etc/sysctl.conf

在文件末尾添加以下内容：

net.ipv4.ip_forward=1
net.ipv6.ip_forward=1

保存并退出编辑器。

2 设置网络接口

拆分VPS时,需要为每个VPS分配独立的网络接口。

sudo bg -c bridge=netdev0
sudo ip addr add 192.168.1.1/24 dev netdev0
sudo netmask 255.255.255.0
sudo link-ver netdev0 ppp0

3 修改iptables规则

为了确保拆分后的VPS无法访问其他部分,需要修改iptables规则。

sudo nano /etc/sysctl.conf

在文件末尾添加以下内容：

iptables-save

保存并退出编辑器。

sudo service iptables save

拆分VPS的脚本

以下是一个简单的shell脚本,用于在Linux系统中拆分VPS。

#!/bin/bash
# 拆分VPS的脚本
# 拆分VPS的IP地址
IP=192.168.1.100
# 拆分VPS的端口
PORT=80
# 拆分后的VPS数量
COUNT=2
# 拆分后的VPSIP地址列表
VPSIPS=()
for ((i=0; i<COUNT; i++))
{
    VPSIPS[i]=IP$i
}
# 创建新的网络接口
sudo bg -c bridge=netdev0
sudo ip addr add 192.168.1.1/24 dev netdev0
sudo netmask 255.255.255.0
sudo link-ver netdev0 ppp0
# 修改iptables规则
sudo nano /etc/sysctl.conf
sudo ip addr add 192.168.1.1/24 dev netdev0
sudo netmask 255.255.255.0
sudo link-ver netdev0 ppp0
sudo save
sudo service iptables save
# 拆分VPS
for ((i=0; i<COUNT; i++))
{
    srcIP=$VPSIPS[i]
    destIP=$VPSIPS[i]
    srcPort=$PORT
    destPort=$PORT
    echo "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT" > /dev/null
    echo "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" > /dev/null
    echo "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED" > /dev/null
    cp /var/www/html/vps1 /var/www/html/vps$i
    cp /etc/vsftpd/vps1.conf /etc/vsftpd/vps$i.conf
    cp /etc/vsftpd/shadow /etc/vsftpd/shadow$i
    cp /etc/passwd /etc/passwd$i
    cp /etc/shadow /etc/shadow$i
    cp /etc/group /etc/group$i
    cp /etc/hosts /etc/hosts$i
    cp /etc/sysconfig -p /etc/sysconfig$i
    cp /etc/sysctl.conf /etc/sysctl.conf$i
    sed -i "s/.*root.*/root@$srcIP/g" /etc/passwd$i
    sed -i "s/.*shdw.*/shdw@$srcIP/g" /etc/shadow$i
    sed -i "s/.*bin/sh/ bin/sh@$srcIP/g" /etc/passwd$i
    sed -i "s/.*bin/shw/ bin/shw@$srcIP/g" /etc/shadow$i
    for ((j=0; j<i; j++))
    {
        sed -i "s/.*root.*/root@$srcIPs[j]/g" /etc/passwd$i
        sed -i "s/.*shdw.*/shdw@$srcIPs[j]/g" /etc/shadow$i
        sed -i "s/.*bin/sh/ bin/sh@$srcIPs[j]/g" /etc/passwd$i
        sed -i "s/.*bin/shw/ bin/shw@$srcIPs[j]/g" /etc/shadow$i
    }
    chown -R root:root /var/www/html/vps$i
    chown -R root:root /etc/vsftpd/vps$i.conf
    chown -R root:root /etc/vsftpd/shadow$i
    chown -R root:root /etc/passwd$i
    chown -R root:root /etc/shadow$i
    chown -R root:root /etc/group$i
    chown -R root:root /etc/hosts$i
    chown -R root:root /etc/sysconfig$i
    chown -R root:root /etc/sysctl.conf$i
    ln -s /var/www/html/vps1 /var/www/html/vps$i
    ln -s /etc/vsftpd/vps1.conf /etc/vsftpd/vps$i.conf
    ln -s /etc/vsftpd/shadow1 /etc/vsftpd/shadow$i
    ln -s /etc/passwd1 /etc/passwd$i
    ln -s /etc/shadow1 /etc/shadow$i
    ln -s /etc/group1 /etc/group$i
    ln -s /etc/hosts1 /etc/hosts$i
    ln -s /etc/sysconfig1 -f /etc/sysconfig$i
    ln -s /etc/sysctl.conf1 -f /etc/sysctl.conf$i
    echo "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT" >> /etc/iptables.d.1
    echo "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT" >> /etc/iptables.d.$i
    echo "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" >> /etc/iptables.d.1
    echo "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" >> /etc/iptables.d.$i
    echo "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED" >> /etc/iptables.d.1
    echo "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A INPUT -p tcp --dport $srcPort -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.1
    echo -e "iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\n" >> /etc/iptables.d.$i
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.1
    echo -e "iptables -A ACCEPT -m state --state RELATED,ESTABLISHED\n" >> /etc/iptables.d.$i
    echo -e "iptables -A INPUT -p tcp --dport $

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www.kaeryun.com

复制打开官网

虚拟服务器拆分 KVM虚拟化工具

服务器上如何拆分VPS

卡尔云官网

什么是VPS？

拆分VPS的目的

拆分VPS的步骤

准备工作

在Linux系统中拆分VPS

1 修改etc/sysctl.conf

2 设置网络接口

3 修改iptables规则

拆分VPS的脚本

卡尔云官网

VPS跨境电商，从零开始的必修课

如何快速查看VPS的DNS配置？

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