配置模板系统
更换换阿里云yum源和阿里开源镜像提供的epel源
rm -rf /etc/yum.repos.d/* # 删除原yum源
#wget命令下载Centos-7.repo
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum install -y epel-release
#wget命令下载阿里云源epel.repo
wget -O /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo
安装常用工具
yum install -y bash-completion.noarch net-tools vim lrzsz wget tree screen lsof tcpdump sysstat ntpdate unzip dos2unix curl
设置时区
timedatectl set-timezone Asia/Shanghai
ntpdate ntp1.aliyun.com
关闭防火墙
systemctl stop firewalld.service
systemctl disable firewalld.service
关闭Selinux
vi /etc/selinux/config #重启生效
7 SELINUX=disabled #第七行
网卡配置优化
systemctl stop NetworkManager
cat /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
BOOTPROTO=none
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=x.x.x.x
NETMASK=255.255.255.0
GATEWAY=x.x.x.x
DNS1=223.5.5.5
DNS2=8.8.8.8
SSH优化
配置文件
vim /etc/ssh/sshd_config
115 #UseDNS no
改为: UseDNS no
79 GSSAPIAuthentication yes
改为: GSSAPIAuthentication no