centos初始化设置

1 关闭防火墙

systemctl disable --now firewalld

2 关闭SELinux

vim /etc/selinux/config
SELINUX=disabled

3修改网卡

修改centos7，8网卡
nmcli connection show
nmcli connection add type ethernet con-name eth0 ifname ens33
nmcli connection delete ens33
ls /etc/sysconfig/network-scripts/
cp /etc/default/grub /etc/default/grub.bak
sed -i 's/rhgb/net.ifnames=0 &/' /etc/default/grub
grub2-mkconfig -o /boot/grub2/grub.cfg
vim /etc/sysconfig/network-scripts/ifcfg-eth0 
DEVICE=eth0
NAME=eth0
BOOTPROTO=static
IPADDR=10.0.0.8  #每个主机IP不同
PREFIX=24
GATEWAY=10.0.0.2
DNS1=10.0.0.2
DNS2=180.76.76.76
ONBOOT=yes

reboot

centos安装完成后建议安装的包

yum install gcc make autoconf gcc-c++ glibc glibc-devel pcre pcre-devel openssl openssl-devel systemd-devel zlib-devel vim lrzsz tree tmux lsof tcpdump wget net-tools iotop bc bzip2 zip unzip nfs-utils man-pages