linux配置ip子网dns

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郑美华 2018-11-14 22:53:02 ©著作权

文章标签 linux ip 子网 文章分类 运维

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1）从命令行将Linux主机重启 # reboot 2）从命令行将Linux主机关机 # poweroff

.配置网络 *# ifconfig 查看当前网络信息(IP地址、子网掩码) *# route -n 查看网关 # cat /etc/resolv.conf 查看dns地址 # hostnamectl 查看主机名

图形配置网络 Alt+F2 nm-connection-editor 右上角把网络重新激活验证 hostnamectl -sethostname xxx.xxx.xxx [root@localhost ~]# hostnamectl [root@localhost ~]# hostnamectl set-hostname teacher.tedu.cn [root@localhost ~]# hostnamectl Static hostname: teacher.tedu.cn Icon name: computer-vm Chassis: vm Machine ID: d3f0970c5308449d950e3453c9a449ba Boot ID: c5799a77789d47ca9a670064a03655eb Virtualization: vmware Operating System: CentOS Linux 7 (Core) CPE OS Name: cpe:/o:centos:centos:7 Kernel: Linux 3.10.0-327.el7.x86_64 Architecture: x86-64

命令配置网络 # nmcli device status 列出所有的网卡设备 # nmcli connection show 列出已配置的网络连接 手动设置IP地址/掩码，允许自动连接 nmcli con mod "连接名" ipv4.method manual ipv4.address "IP地址/掩码位数"
# nmcli connection modify eth0 ipv4.method manual ipv4.addresses "10.0.0.10/255.255.255.0"

nmcli con mod "连接名" connection.autoconnect yes # nmcli connection modify eth0 connection.autoconnect yes

手动指定默认网关、DNS地址 # nmcli con mod "连接名" ipv4.gateway 默认网关地址 # nmcli con mod "连接名" ipv4.dns DNS地址 # nmcli connection modify eth0 ipv4.gateway 10.0.0.254 # nmcli connection modify eth0 ipv4.dns 4.4.4.4

停用指定连接 nmcli con down "连接名" 激活指定连接 nmcli con up "连接名"

*# nmcli connection down eth0 *# nmcli connection up eth0 * *# ifconfig * eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.0.0.10 netmask 255.255.255.0 broadcast 10.0.0.255 # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.0.0.254 0.0.0.0 UG 100 0 0 eno16777736