基于多IP地址Web服务

【Centos7.4版本】

！！！测试环境我们首关闭防火墙和selinux

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
[root@localhost ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
[root@localhost ~]# setenforce 0

一、配置多IP地址Web服务

1、首先先看一下本地网卡的信息

[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# cat ifcfg-ens32
    TYPE=Ethernet
    PROXY_METHOD=none
    BROWSER_ONLY=no
    BOOTPROTO=none
    IPADDR=10.0.0.129        //我本机主网卡P地址
    NETMASK=255.255.255.0
    GATEWAY=10.0.0.2
    DNS1=8.8.8.8
    DEFROUTE=yes
    IPV4_FAILURE_FATAL=no
    IPV6INIT=yes
    IPV6_AUTOCONF=yes
    IPV6_DEFROUTE=yes
    IPV6_FAILURE_FATAL=no
    IPV6_ADDR_GEN_MODE=stable-privacy
    NAME=ens32
    UUID=e4b11756-1775-4b6a-adbf-95f3f24f941e
    DEVICE=ens32
    ONBOOT=yes 

2、我们使用ens32网卡作为主网卡，然后复制一个子网卡ens32:2（子网卡冒号后面的数字代表子网卡的编号，可任意取）

[root@localhost network-scripts]# cp ifcfg-ens32 ifcfg-ens32:2

3、编辑子网卡的配置信息

[root@localhost network-scripts]# vim ifcfg-ens32:2
    TYPE=Ethernet
    PROXY_METHOD=none
    BROWSER_ONLY=no
    BOOTPROTO=none
    IPADDR=10.0.0.22         //改与主网卡同网段的其他地址信息（但不能使用该网段的三个不难使用的IP）
    NETMASK=255.255.255.0
    GATEWAY=10.0.0.2　　　　　　//我的虚拟机NAT网卡的网关默认的是10.0.0.2
    DNS1=8.8.8.8
    DEFROUTE=yes
    IPV4_FAILURE_FATAL=no
    IPV6INIT=yes
    IPV6_AUTOCONF=yes
    IPV6_DEFROUTE=yes
    IPV6_FAILURE_FATAL=no
    IPV6_ADDR_GEN_MODE=stable-privacy
    NAME=ens32:2　　　　　　　　　　　　//名字可改也可以不改，影响不大
    UUID=e4b11756-1775-4b6a-adbf-95f3f24f941e
    DEVICE=ens32:2　　　　　　　　　　//块设备的名字必须改成子网卡的名字
    ONBOOT=yes

4、重启网络服务，查看网卡配置信息

[root@localhost network-scripts]# systemctl restart network
[root@localhost network-scripts]# ifconfig
ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.0.129  netmask 255.255.255.0  broadcast 10.0.0.255
        inet6 fe80::fe04:212a:5e53:cec4  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:b3:89:a5  txqueuelen 1000  (Ethernet)
        RX packets 23547  bytes 29611303 (28.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5069  bytes 654850 (639.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens32:2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.0.22  netmask 255.255.255.0  broadcast 10.0.0.255
        ether 00:0c:29:b3:89:a5  txqueuelen 1000  (Ethernet)

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 152  bytes 13128 (12.8 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 152  bytes 13128 (12.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

5、使用YUM安装HTTP服务

[root@localhost ~]# yum install -y httpd

6、启动http服务，设置开机自启

[root@localhost ~]# systemctl start httpd
[root@localhost ~]# systemctl enable httpd
Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service

7、查看http监听端口是否开启（监听端口没开的话，后面就访问不了主机信息）

[root@localhost ~]# netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1005/sshd
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1387/master
tcp6       0      0 :::80                   :::*                    LISTEN      14164/httpd
tcp6       0      0 :::22                   :::*                    LISTEN      1005/sshd
tcp6       0      0 ::1:25                  :::*                    LISTEN      1387/master
udp        0      0 0.0.0.0:68              0.0.0.0:*                           10151/dhclient
udp        0      0 0.0.0.0:15648           0.0.0.0:*                           10151/dhclient
udp        0      0 127.0.0.1:323           0.0.0.0:*                           722/chronyd
udp6       0      0 :::23051                :::*                                10151/dhclient
udp6       0      0 ::1:323                 :::*                                722/chronyd

8、要编辑多IP的虚拟主机，首先看看配置模板

[root@localhost ~]# rpm -qa | grep http
httpd-tools-2.4.6-93.el7.centos.x86_64
httpd-2.4.6-93.el7.centos.x86_64
[root@localhost ~]# vim /usr/share/doc/httpd-2.4.6/httpd-vhosts.conf
............        //上面的我省略了
<VirtualHost *:@@Port@@>
    ServerAdmin webmaster@dummy-host.example.com
    DocumentRoot "@@ServerRoot@@/docs/dummy-host.example.com"
    ServerName dummy-host.example.com
    ServerAlias www.dummy-host.example.com
    ErrorLog "/var/log/httpd/dummy-host.example.com-error_log"
    CustomLog "/var/log/httpd/dummy-host.example.com-access_log" common
</VirtualHost>

<VirtualHost *:@@Port@@>
    ServerAdmin webmaster@dummy-host2.example.com
    DocumentRoot "@@ServerRoot@@/docs/dummy-host2.example.com"
    ServerName dummy-host2.example.com
    ErrorLog "/var/log/httpd/dummy-host2.example.com-error_log"
    CustomLog "/var/log/httpd/dummy-host2.example.com-access_log" common
</VirtualHost>
//上面的最后内容就是虚拟主机的配置模板

9、创建每个IP对应的主目录，并写入测试信息

[root@localhost ~]# mkdir /var/www/test1
[root@localhost ~]# mkdir /var/www/test2
[root@localhost ~]# echo '<h1>This host port is 10.0.0.129</h1>' > /var/www/test1/index.html
[root@localhost ~]# echo '<h1>This host port is 10.0.0.22</h1>' > /var/www/test2/index.html

10、编辑http主配置文件,编辑两个<VirtualHost>内容

[root@localhost ~]# vim /etc/httpd/conf/httpd.conf
..........                //上面的内容我省略了
<VirtualHost 10.0.0.129:80>
        documentroot    "/var/www/test1/"
        ErrorLog 　　　　"/var/log/httpd/10.0.0.129-error_log"
        CustomLog 　　　"/var/log/httpd/10.0.0.129-access_log" common
</VirtualHost>

<VirtualHost 10.0.0.22:80>
        documentroot    "/var/www/test2/"
        errorlog        "/var/log/httpd/10.0.0.22-error_log"
        CustomLog 　　　"/var/log/httpd/10.0.0.22-access_log" common
</VirtualHost>
//上面的就是需要添加的虚拟主机配置信息

11、重启httpd服务

[root@localhost ~]# systemctl restart httpd

12、在浏览地址栏分别输入两个IP地址：10.0.0.129和10.0.0.22