Detailed steps for manually configuring the IP address in Linux

1. Enter the network card configuration directory first

2. Edit the configuration file of ifcfg-ens33 network card

vim ifcfg-ens33 is as follows:

After modification, it is as follows:

Exit and save, use ip add to view your own IP address, ip route to view the gateway, and then continue to edit the ifcfg-ens33 network card configuration file

Exit and save (wq)

The analysis is as follows:

BOOTPROTO=none #Set the network card to statically configure the IP address none static configuration (manually specify the IP address) dhcp means that the virtual machine dynamically obtains the IP address
NAME=ens33 #The device name of the network card is ens33
DEVICE=ens33 #The device name of the network card is ens33
ONBOOT=yes #Automatically enable the network card when booting up --》Automatically activate the network card
IPADDR=192.168.0.178 #ip address
PREFIX=24 #Subnet mask
#NETMASK=255.255.255.0 #Subnet mask
GATEWAY=192.168.0.1 #Gateway
DNS1=114.114.114.114 #Specify the preferred DNS server

3. Refresh network services

---》centos7:
service network restart (refresh network service)
---》centos8:
Using ifup ens33

How to check the version of centos:

Refresh the network service and check the IP address and gateway again

4. Test whether ping Baidu can access the Internet

ctrl+c to force terminate ping

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