Linux CentOS6和CentOS7设置静态ip

矫情吗；* 2022-10-01 09:43 295阅读 0赞

## 一、CentOS6 ##

1.1 请确认网络连接方式为：桥接  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NjI5MzA4_size_16_color_FFFFFF_t_70]

## 2.修改网卡eth0 ##

执行命令：vim /etc/sysconfig/network-scripts/ifcfg-eth0

\++++++++++++++++++++++++++++++++

DEVICE=“eth0”  
BOOTPROTO=“static” \#将原来的值“dhcp”改为“static”  
HWADDR=“00:0C:29:F2:4E:96”  
IPV6INIT=“yes”  
NM\_CONTROLLED=“yes”  
ONBOOT=“yes”  
TYPE=“Ethernet”  
UUID=“b68b1ef8-13a0-4d11-a738-1ae704e6a0a4”

IPADDR=192.168.1.16 \#你需要定义的IP地址，不要与本机ip地址一样  
NETMASK=255.255.255.0 \#子网掩码，  
GATEWAY=192.168.1.1 \#默认网关，一般与路由器地址一样

\++++++++++++++++++++++++++++++++

保存退出

## 3.重启网络服务 ##

service network restart

## 4.检查一下状态 ##

ifconfig

\+++++++++++++++++++++++++++++++++

eth0 Link encap:Ethernet HWaddr 00:0C:29:F2:4E:96  
inet addr:192.168.1.16 Bcast:192.168.1.255 Mask:255.255.255.0  
inet6 addr: fe80::20c:29ff:fef2:4e96/64 Scope:Link  
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1  
RX packets:17017 errors:0 dropped:0 overruns:0 frame:0  
TX packets:9586 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:7803412 (7.4 MiB) TX bytes:1613751 (1.5 MiB)

lo Link encap:Local Loopback  
inet addr:127.0.0.1 Mask:255.0.0.0  
inet6 addr: ::1/128 Scope:Host  
UP LOOPBACK RUNNING MTU:16436 Metric:1  
RX packets:21844 errors:0 dropped:0 overruns:0 frame:0  
TX packets:21844 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:0  
RX bytes:2042507 (1.9 MiB) TX bytes:2042507 (1.9 MiB)

\+++++++++++++++++++++++++++++++++

到了这里，请ping一下外网

ping [baidu.com][]

## 5.我遇到两个情况： ##

5.1 ping通了，那就OK！

5.2 报错：ping:unknow host [baidu.com][]

我的解决方法是：

dhclient

敲了这个命令后，再ping一次

\---------------------------------

PING [baidu.com][] (180.149.132.47) 56(84) bytes of data.  
　　64 bytes from 180.149.132.47: icmp\_seq=1 ttl=54 time=38.3 ms  
　　64 bytes from 180.149.132.47: icmp\_seq=2 ttl=54 time=38.7 ms  
　　64 bytes from 180.149.132.47: icmp\_seq=3 ttl=54 time=49.7 ms  
　　64 bytes from 180.149.132.47: icmp\_seq=4 ttl=54 time=38.1 ms  
　　64 bytes from 180.149.132.47: icmp\_seq=5 ttl=54 time=37.9 ms  
　　64 bytes from 180.149.132.47: icmp\_seq=6 ttl=54 time=38.3 ms

\---------------------------------  
　　借鉴：[https://www.cnblogs.com/yepo/p/5691460.html][https_www.cnblogs.com_yepo_p_5691460.html]  
\-------------------------------------------------------------------------------------------------------------------------------

## 二、CentOS7 ##

设置静态IP地址与动态iIP差不多，也是要修改网卡配置文件 vi /etc/sysconfig/network-scripts/ifcfg-ens32 (最后一个为网卡名称)

（1）bootproto=static

（2）onboot=yes

（3）在最后加上几行，IP地址、子网掩码、网关、dns服务器

IPADDR=192.168.1.160
    NETMASK=255.255.255.0
    GATEWAY=192.168.1.1
    DNS1=119.29.29.29
    DNS2=8.8.8.8

（4）重启网络服务

[root@mini ~]# systemctl restart network

DNS服务器可以只配一个，我用的是两个免费的dns服务器，查看IP地址，测试联网  
![在这里插入图片描述][960580-20181022105033957-1712783449.png]

[root@mini ~]# ip addr
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
        inet 127.0.0.1/8 scope host lo
           valid_lft forever preferred_lft forever
        inet6 ::1/128 scope host
           valid_lft forever preferred_lft forever
    2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
        link/ether 00:0c:29:d2:42:55 brd ff:ff:ff:ff:ff:ff
        inet 192.168.1.160/24 brd 192.168.1.255 scope global noprefixroute ens32
           valid_lft forever preferred_lft forever
        inet6 fe80::f86e:939e:ff9b:9aec/64 scope link noprefixroute
           valid_lft forever preferred_lft forever
    
    [root@mini ~]# ping www.baidu.com
    PING www.a.shifen.com (163.177.151.109) 56(84) bytes of data.
    bytes from 163.177.151.109 (163.177.151.109): icmp_seq=1 ttl=55 time=27.5 ms
    bytes from 163.177.151.109 (163.177.151.109): icmp_seq=2 ttl=55 time=35.2 ms
    ^C
    --- www.a.shifen.com ping statistics ---
    packets transmitted, 2 received, 0% packet loss, time 1008ms
    rtt min/avg/max/mdev = 27.570/31.425/35.281/3.859 ms

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NjI5MzA4_size_16_color_FFFFFF_t_70]: /images/20220118/320875b824ec4e599a680bb43bb280e2.png
[baidu.com]: http://baidu.com
[https_www.cnblogs.com_yepo_p_5691460.html]: https://www.cnblogs.com/yepo/p/5691460.html
[960580-20181022105033957-1712783449.png]: /images/20220118/4106bd6e607744828565b1ca93414fcc.png