centos设置静态ip，无法连接外网

静态IP配置

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

TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"     #修改项
DEFROUTE="yes"
IPADDR=192.168.31.5    #添加项
NETMASK=255.255.255.0  #添加项
GATEWAY=192.168.31.1   #添加项
DNS1=192.168.31.1      #添加项
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"         #修改项      

#centos7
service network restart
#centos 可用 nmcli c reload 命令启动
nmcli c reload      

#centos8
systemctl restart NetworkManager
#centos 可用 nmcli c reload 命令启动
nmcli c reload


#NetworkManager常用命令
service NetworkManager stop //关闭NetworkManager
service NetworkManager status //查看NetworkManager状态
chkconfig NetworkManager off //禁止开机启动
chkconfig NetworkManager on //开机启动
service NetworkManager start //临时启动
chkconfig NetworkManager off  //永久关闭NetworkManager托管工具      

vim /etc/resolv.conf

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