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配置80端口

看了好几个页面内容都有错，下面是正确方法：
#/sbin/iptables -I INPUT -p tcp –dport 80 -j ACCEPT
#/sbin/iptables -I INPUT -p tcp –dport 22 -j ACCEPT

然 后保存：
#/etc/rc.d/init.d/iptables save

再查看是否已经有了：
[root@vcentos ~]# /etc/init.d/iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination
1    ACCEPT     udp  —  0.0.0.0/0            0.0.0.0/0           udp dpt:80
2    ACCEPT     tcp  —  0.0.0.0/0            0.0.0.0/0           tcp dpt:80
3    RH-Firewall-1-INPUT  all  —  0.0.0.0/0            0.0.0.0/0

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination
1    RH-Firewall-1-INPUT  all  —  0.0.0.0/0            0.0.0.0/0

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Centos常用配置文件:

(1)/etc/profile ,系统级的环境变量和启动程序配置,修改后对所有用户都有效

(2)/etc/rc.local ，这个脚本将在开机启动的时候，自动运行，可放置一些需要每次开机自启动的程序如tomcat,mysql,oracle

这个在opensuse中 对应的是/etc/init.d/boot.local这个文件

租用的经常是国外的服务器,需要调整时区并调整时间.当然方法有很多种,我说说我经常用,而且是最简单的方法吧.

cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

ntpdate us.pool.ntp.org

很简单吧,解析一下,第一句是把当前时区调整为上海就是+8区,想改其他时区也可以去看看/usr/share/zoneinfo目录;然后第二句是利用ntpdate同步标准时间.

没有ntpdate的可以yum一下:

yum install -y ntpdate

编辑/etc/sysconfig/i18n，修改“LANG=”zh_CN.UTF-8″”

In order to support XEN mode, the system needs to have its Virtualization feature enabled in BIOS as a first step, and XEN software package in the OS needs to be loaded during installation

1) Create a RAID array using the Intel(R) Embedded Server RAID Technology II RAID BIOS Console.
2) Connect USB floppy drive and insert the floppy disk with RAID driver
3) Boot your system using RHEL5.0 DVD
4) At boot prompt type “linux dd noprobe=ata1 noprobe=ata2 noprobe=ata3 noprobe=ata4”
5) And then you’ll see a page that shows “loading usb-storage driver”, and then it will ask you “Do you have a driver disk”. Choose “Yes”
6) Then it will ask you which one do you choose as a driver disk, choose “sda” which is the USB floppy disk. And then click OK to continue, you’ll see the message “Reading driver disk”,  after it finishes, it will ask “Do you wish to load any more driver disks?” choose No if you do not have any more driver to load. （更多…）