First use the ifconfig command to view the name of the current network card, then use ethtool to view the network connection status, and finally edit the network card configuration file
vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
IPADDR="192.168.58.95"
GATEWAY="192.168.58.254"
NETMASK="255.255.255.0"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s3"
UUID="48ad6f70-cfcd-41cb-ba09-1276e9c6a4ad"
DEVICE="enp0s3"
ONBOOT="yes"
Configure domain name resolution service IP
Method 1) directly add DNS1="202.96.128.86" in the above configuration file, and then execute the command service network restart
Method 2) vi /etc/resolv.conf file, add the following content
nameserver 202.96.128.86
This method does not need to execute the above command
Reason: The service network restart command will write the nameserver 202.96.128.86 to the /etc/resolv.conf file according to the DNS1 parameter configuration in the configuration file
Note: ONBOOT must be yes, otherwise restarting the network service will fail