centos7 新装系统网络配置

[root@localhost ~]# cat /etc/sysconfig/grub 
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
#GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/swap rhgb quiet"
GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/swap rhgb net.ifnames=0 biosdevname=0 quiet"
GRUB_DISABLE_RECOVERY="true"

重新配置

grub2-mkconfig -o /boot/grub2/grub.cfg

ip addr flush dev ens33

看错误信息

tail -n 200 /var/log/messages

vmware 虚拟机 配置 网关为 192.168.22.2  结尾不能为1，会导致无法ping通网络