Centos8 初始化

1 网卡改名成eth0

cat > /root/grub<<EOF
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="resume=/dev/mapper/cl-swap rd.lvm.lv=cl/root rd.lvm.lv=cl/swap rhgb quiet net.ifnames=0 biosdevname=0"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true
EOF

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

2 修改启动运行级别

2.1 命令行界面

systemctl set-default multi-user.target

2.2 图形界面

systemctl set-default graphical.target

3 关闭防火墙

systemctl disable --now firewalld

4 关闭selinux

sed -i 's#enforcing$#disabled#g' /etc/selinux/config

5 配置网卡后重启网卡

nmcli c reload
nmcli c up eth0

6 修改机器名

hostnamectl set-hostname mould

7 删除virbr0网卡

yum -y install libvirt-client
virsh net-destroy default
virsh net-undefine default