CentOS 6学习笔记（二）–优化CentOS以适应开发环境
修改网络配置
vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=dhcp
service network restart
ip addr
关闭防火墙
service iptables stop
service ip6tables stop
service iptables status
service ip6tables status
chkconfig iptables off
chkconfig ip6tables off
vi /etc/selinux/config
SELINUX=disabled
配置 DNS 服务器
vi /etc/resolv.conf
nameserver 114.114.114.114
配置 repo 文件
新建文本文件，拷贝下列内容，重命名为 CentOS6-Base-163.repo，上传到 /usr/local 目录下。
[base]
name=CentOS-$releasever - Base - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-$releasever - Updates - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
gpgcheck=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
gpgcheck=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=0
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
gpgcheck=0
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
将 repo 文件拷贝到 /usr/local 目录下
cd /etc/yum.repos.d/
rm -rf *
cp /usr/local/CentOS6-Base-163.repo .
配置 yum
yum clean all
yum makecache
#测试yum工作是否正常，随便安装一个东西试试
yum install telnet
配置系统时间
安装 ntpdate
yum install -y ntp
ntpdate 0.pool.ntp.org
#查看系统当前时间是否正确
date
#添加NTP
chkconfig --add ntpd
#开机自启动NTP
chkconfig ntpd on
修改 NTP 配置文件
vi /etc/ntp.conf
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
server 0.pool.ntp.org iburst
server 1.pool.ntp.org iburst
server 2.pool.ntp.org iburst
server 3.pool.ntp.org iburst
安装 JDK 1.7
将 jdk-7u65-linux-i586.rpm 上传到 /usr/local 目录下。
cd /usr/local
rpm -ivh jdk-7u65-linux-i586.rpm
配置 JDK 相关的环境变量
vi ~/.bashrc
export JAVA_HOME=/usr/java/latest
export PATH=$PATH:$JAVA_HOME/bin
source ~/.bashrc
#测试java是否安装成功
java -version
安装 gcc-c++
yum install gcc-c++
删除 70-persistent-net.rules
为了防止某个设备名称和mac地址不对应的现象，将 70-persistent-net.rules 这个文件删除
rm -f /etc/udev/rules.d/70-persistent-net.rules
关机或重启
#立即关机
shutdown -h now
#重启
reboot
#强制重启
reboot –f
