centos7修改静态IP_centos7 pc=0x67ea17 m=0 sigcode=2 addr=0x7f843a7e0-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_45954124/article/details/112688861

查看IP

ifconfig

查看网络文件

vim /etc/sysconfig/network-scripts/

修改ens文件

vim /etc/sysconfig/network-scripts/ifcfg-ens33

添加以下配置

TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
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=ens33
UUID=d9bbc3c6-4f1a-4c14-8a25-8488bffce199
DEVICE=ens33
ONBOOT="yes"
# 这个为静态IP
IPADDR=192.168.56.11
NETMASK=255.255.255.0
GATEWAY=192.168.56.2

重启网络服务

systemctl restart network

测试

ping 8.8.8.8
ping www.baidu.com

我们这里发现百度ping不通是因为DNS有问题

配置DNS

vim /etc/resolv.conf

添加如下内容

nameserver 192.168.56.2

最后查看ip

ifconfig

[root@aubin ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:d6:ea:f2:7e  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.56.130  netmask 255.255.255.0  broadcast 192.168.56.255
        inet6 fe80::8b02:e710:e394:90aa  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:28:fd:41  txqueuelen 1000  (Ethernet)
        RX packets 789880  bytes 1117587089 (1.0 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 269183  bytes 16437186 (15.6 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

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 1000  (Local Loopback)
        RX packets 1360  bytes 150176 (146.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1360  bytes 150176 (146.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:7b:17:69  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# ifconfig
[root@aubin ~]# vim /etc/sysconfig/network-scripts/
ifcfg-ens33             ifdown-Team             ifup-post
ifcfg-lo                ifdown-TeamPort         ifup-ppp
ifdown                  ifdown-tunnel           ifup-routes
ifdown-bnep             ifup                    ifup-sit
ifdown-eth              ifup-aliases            ifup-Team
ifdown-ib               ifup-bnep               ifup-TeamPort
ifdown-ippp             ifup-eth                ifup-tunnel
ifdown-ipv6             ifup-ib                 ifup-wireless
ifdown-isdn             ifup-ippp               init.ipv6-global
ifdown-post             ifup-ipv6               network-functions
ifdown-ppp              ifup-isdn               network-functions-ipv6
ifdown-routes           ifup-plip               
ifdown-sit              ifup-plusb              
[root@aubin ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33 
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# systemctl restart network
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=128 time=66.5 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=128 time=114 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=128 time=71.5 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2007ms
rtt min/avg/max/mdev = 66.517/84.170/114.426/21.494 ms
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# ping www.baidu.com
ping: www.baidu.com: 未知的名称或服务
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# vim /etc/resolv.conf 
[root@aubin ~]# 
[root@aubin ~]# 
[root@aubin ~]# ping www.baidu.com
PING www.a.shifen.com (110.242.68.4) 56(84) bytes of data.
64 bytes from 110.242.68.4 (110.242.68.4): icmp_seq=1 ttl=128 time=71.2 ms
64 bytes from 110.242.68.4 (110.242.68.4): icmp_seq=2 ttl=128 time=80.5 ms
^C
--- www.a.shifen.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 71.237/75.900/80.564/4.671 ms
[root@aubin ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:d6:ea:f2:7e  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.56.11  netmask 255.255.255.0  broadcast 192.168.56.255
        inet6 fe80::8b02:e710:e394:90aa  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:28:fd:41  txqueuelen 1000  (Ethernet)
        RX packets 789926  bytes 1117590273 (1.0 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 269243  bytes 16443761 (15.6 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

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 1000  (Local Loopback)
        RX packets 1432  bytes 157176 (153.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1432  bytes 157176 (153.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:7b:17:69  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0