1. 安装系统

新建虚拟机 稍后安装操作系统 选择Linux 命名和选择位置 硬盘大小为50G 完成 编辑虚拟机 把虚拟化勾上 选择光盘 开启虚拟机进入安装界面 按Tab键，在最后按空格输入"net.ifnames=0 biosdevname=0"，回车 默认，下一步 点击配置网络 手动配置IP 勾选启动开启网络选项 修改主机名 修改时区 修改时区 修改支持语言 添加中文 选择安装包 选中安装包 创建分区 手动创建分区 手动创建分区 创建swap分区 剩下空间分给/根分区 保存 接受 取消内核崩溃备份 取消内核崩溃备份 开始安装 配置密码 配置密码 重启

2. 配置网卡信息（把不需要的删掉）：

[root@template ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
BOOTPROTO=none
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.9.127
PREFIX=24
GATEWAY=192.168.9.1
DNS1=192.168.9.1
DNS2=8.8.8.8
DNS3=114.114.114.114
[root@template ~]# systemctl restart network

3. 防火墙的优化

[root@template ~]# systemctl stop firewalld
[root@template ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@template ~]# vi /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of three values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

4. SSH的优化

[root@template ~]# vi /etc/ssh/sshd_config
GSSAPIAuthentication no
UseDNS no
[root@template ~]# systemctl restart sshd

5. yum源优化

# 使用光盘搭建本地yum源
umount /mnt
cd /etc/yum.repos.d
mkdir test -p
\mv *.repo test
echo '[local]
name=local
baseurl=file:///mnt
gpgcheck=0'>local.repo
mount /dev/cdrom /mnt
yum makecache

6. 其他优化

# 关闭网卡图形化设置模式
[root@template ~]# systemctl stop NetworkManager.service
[root@template ~]# systemctl disable NetworkManager.service
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
Removed symlink /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.
# 下载tab补全命令
[root@template ~]# yum install -y bash-completion.noarch
# 下载常用命令
[root@template ~]# yum install -y net-tools vim lrzsz wget tree screen lsof tcpdump
# 关闭邮件服务
[root@template ~]# systemctl stop postfix
[root@template ~]# systemctl disable postfix
Removed symlink /etc/systemd/system/multi-user.target.wants/postfix.service.

最后关机。