[root@localhost ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.202.130 netmask 255.255.255.0 broadcast 192.168.202.255
inet6 fe80::20c:29ff:feff:458f prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:ff:45:8f txqueuelen 1000 (Ethernet)
RX packets 3131 bytes 295354 (288.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 345 bytes 37930 (37.0 KiB)
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 0 (Local Loopback)
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@localhost ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
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: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:ff:45:8f brd ff:ff:ff:ff:ff:ff
inet 192.168.202.130/24 brd 192.168.202.255 scope global eno16777736
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:feff:458f/64 scope link
valid_lft forever preferred_lft forever
[root@localhost ~]#
[root@localhost ~]# ifdown eno16777736 && ifup eno16777736 //关闭网卡后并重新启动网卡
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
[root@localhost ~]#
[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# ls
ifcfg-eno16777736 ifdown-isdn ifdown-tunnel ifup-isdn ifup-Team
ifcfg-lo ifdown-post ifup ifup-plip ifup-TeamPort
ifdown ifdown-ppp ifup-aliases ifup-plusb ifup-tunnel
ifdown-bnep ifdown-routes ifup-bnep ifup-post ifup-wireless
ifdown-eth ifdown-sit ifup-eth ifup-ppp init.ipv6-global
ifdown-ippp ifdown-Team ifup-ippp ifup-routes network-functions
ifdown-ipv6 ifdown-TeamPort ifup-ipv6 ifup-sit network-functions-ipv6
[root@localhost network-scripts]# cp ifcfg-eno16777736 ifcfg-eno16777736\:0 //增加反斜杠就为了脱义冒号
[root@localhost network-scripts]# vi !$
vi ifcfg-eno16777736\:0
更改其中的网卡名称和IP、DNS1和网关GATEWAY都可删除(可删除)
将NAME=eno16777736名称更改为NAME=eno16777736:0——>配置文件中的 冒号 ,就不需要脱义了
添加DEVICE=eno16777736:0——>这一步若不添加,我的虚拟网卡实现不了
将IP地址IPADDR=192.168.202.130更改为192.168.202.150(这里面的ip可随意更改)
DNS1和网关GATEWAY都可删除(可删除)——>因为已经有了DNS和网关GATEWAY了
然后退出保存
[root@localhost network-scripts]# ifdown eno16777736 && ifup eno16777736
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/Act
[root@localhost network-scripts]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.202.130 netmask 255.255.255.0 broadcast 192.168.202.255
inet6 fe80::20c:29ff:feff:458f prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:ff:45:8f txqueuelen 1000 (Ethernet)
RX packets 4180 bytes 393171 (383.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 982 bytes 138704 (135.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eno16777736:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.202.150 netmask 255.255.255.0 broadcast 192.168.202.255
ether 00:0c:29:ff:45:8f 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 0 (Local Loopback)
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@localhost network-scripts]#
[root@localhost ~]# mii-tool eno16777736
eno16777736: negotiated 1000baseT-FD flow-control, link ok
[root@localhost ~]#
[root@localhost ~]# hostnamectl set-hostname hanfeng-001
[root@localhost ~]# hostname //在当前终端下,使用hostname命令,查看主机名
hanfeng-001
[root@localhost ~]#
但会发主机名并没有立即生效,需要退出重新登录终端,或者进入一个子shell(输入一个bash即可)
[root@localhost ~]# bash
[root@hanfeng-001 ~]# //就会看到主机名变更了
[root@hanfeng-001 ~]# cat /etc/hostname
hanfeng-001
[root@hanfeng-001 ~]#
[root@hanfeng-001 ~]# cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 119.29.29.29
[root@hanfeng-001 ~]#
[root@hanfeng-001 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
[[root@hanfeng-001 ~]# ping www.qq123.com
PING www.qq123.com (202.91.250.93) 56(84) bytes of data.
64 bytes from 202.91.250.93: icmp_seq=1 ttl=128 time=11.6 ms
64 bytes from 202.91.250.93: icmp_seq=2 ttl=128 time=11.3 ms
64 bytes from 202.91.250.93: icmp_seq=3 ttl=128 time=11.7 ms
64 bytes from 202.91.250.93: icmp_seq=4 ttl=128 time=11.8 ms
^C
--- www.qq123.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 11.363/11.652/11.811/0.172 ms
[root@hanfeng-001 ~]#
[root@hanfeng-001 ~]# vim /etc/hosts
在/etc/hosts文件添加 192.168.202.150 www.qq123.com
[root@hanfeng-001 ~]# ping www.qq123.com
PING www.qq123.com (192.168.202.150) 56(84) bytes of data.
64 bytes from www.qq123.com (192.168.202.150): icmp_seq=1 ttl=64 time=0.100 ms
64 bytes from www.qq123.com (192.168.202.150): icmp_seq=2 ttl=64 time=0.045 ms
64 bytes from www.qq123.com (192.168.202.150): icmp_seq=3 ttl=64 time=0.042 ms
^C
--- www.qq123.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.042/0.062/0.100/0.027 ms
[root@hanfeng-001 ~]#