CentOS 系统基本配置

建议修改系统环境英文,通过SSH远程工具管理不会出现乱码
vi /etc/sysconfig/i18n
LANG=”en_US”

建议关闭SELINUX
vi /etc/sysconfig/selinux

一、网络配置
1、通过网卡配置文件配置
vi /etc/sysconfig/network-scripts/ifcfg-eth0

2、修改计算机名
vi /etc/sysconfig/network

3、配置DNS
vi /etc/resolv.conf

配置完成后重新启动网络服务
service network restart

4、通过菜单配置网络---TAB切换
setup

配置IP
[root@localhost /]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
UUID=f90d9f87-dc35-4c67-863d-76c8d15f1e4a
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
HWADDR=50:46:5D:73:3C:22
IPADDR=192.168.2.18
PREFIX=24
GATEWAY=192.168.2.1
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0"

配置计算机名
[root@localhost /]# vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=manager

配置DNS
[root@localhost /]# vi /etc/resolv.conf
nameserver 61.139.2.69

配置本地yum源
[root@localhost yum.repos.d]# vi local.repo
[local]
name=local
baseurl=file:///var/centos6.8/
enabled=1
gpgcheck=0

[root@localhost yum.repos.d]# yum clean all
Loaded plugins: fastestmirror, security
Cleaning repos: base extras local updates
Cleaning up Everything
[root@localhost yum.repos.d]# yum makecache

关闭SElinux
[root@localhost yum.repos.d]# vi /etc/selinux/config
SELINUX=disabled
SELINUXTYPE=targeted

更新服务器时间
[root@localhost yum.repos.d]# ntpdate time.windows.com && hwclock -w && hwclock --systohc
14 Jun 16:38:40 ntpdate[2300]: adjust time server 40.69.40.157 offset -0.015351 sec

关闭不用的服务

查看不用的服务
[root@localhost yum.repos.d]# chkconfig --list |egrep -v "crond |haldaemon |iptables |irqbalance |messagebus |netfs |network |rsyslog |sshd |sysstat |udev-post"

编写脚本处理
[root@manager sh]# cat chkconfig.sh
#!/bin/bash
# close service all
for s1 in chkconfig --list |egrep -v "crond |haldaemon |iptables |irqbalance |messagebus |netfs |network |rsyslog |sshd |sysstat |udev-post" |awk ‘{print $1}‘
do
chkconfig $s1 off
done

创建普通用户
[root@manager sh]# useradd xk
[root@manager sh]# passwd xk
Changing password for user xk.
New password:
Retype new password:
passwd: all authentication tokens updated successfully.

授权普通用户管理
[root@manager sh]# visudo
root ALL=(ALL) ALL
user ALL=(ALL) ALL

调整文件描述符
[root@manager sh]# vi /etc/security/limits.conf
# soft core 0
# hard rss 10000
#@student hard nproc 20
#@faculty soft nproc 20
#@faculty hard nproc 50
#ftp hard nproc 0
#@student - maxlogins 4

• • nofile 65535

[root@manager ~]# ulimit -n
65535

清除登录时显示内核信息
[root@manager ~]# echo >/etc/issue
[root@manager ~]# echo >/etc/redhat-release

CentOS 系统基本配置

原文：http://blog.51cto.com/zhizhimao/2323069