centos設定靜态ip，無法連接配接外網

靜态IP配置

#cd /etc/sysconfig/network-scripts/
#vim ifcfg-enp2s0

TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"     #修改項
DEFROUTE="yes"
IPADDR=192.168.31.5    #添加項
NETMASK=255.255.255.0  #添加項
GATEWAY=192.168.31.1   #添加項
DNS1=192.168.31.1      #添加項
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp2s0"
UUID="808bc336-df94-426c-a8e4-4dbd2291f95f"
DEVICE="enp2s0"
ONBOOT="yes"         #修改項      

#centos7
service network restart
#centos 可用 nmcli c reload 指令啟動
nmcli c reload      

#centos8
systemctl restart NetworkManager
#centos 可用 nmcli c reload 指令啟動
nmcli c reload


#NetworkManager常用指令
service NetworkManager stop //關閉NetworkManager
service NetworkManager status //檢視NetworkManager狀态
chkconfig NetworkManager off //禁止開機啟動
chkconfig NetworkManager on //開機啟動
service NetworkManager start //臨時啟動
chkconfig NetworkManager off  //永久關閉NetworkManager托管工具      

vim /etc/resolv.conf

# Generated by NetworkManager
nameserver 192.168.1.1
nameserver 8.8.8.8 #添加項
nameserver 8.8.4.4 #添加項