Veritas Linux Cluster
Get Redhat Enterprise 3.0 from:
Your local RedHat rep�
Get Veritas’ VCS and VM products from:
ftp://ftp.veritas.com/pub/products/fst_ha.lxrt2.2.redhatlinux.tar.gz
ftp://ftp.veritas.com/pub/products/fst_ha.lxrt2.2MP1.redhatlinux.tar.gz
You will need a temporary key to complete this install. Please
contact your local Veritas account team or email me at
rich@robotthoughts.com
Install RedHat Enterprise Linux 3.0:
Put CD1 in your CD drive and reboot.
Make sure you select the smb-server packages during the install. You need that package to run Samba for Windows file-sharing.
Follow the install for your hardware and set up the boot disk to
your liking. Be sure and leave some extra room on the disk (a least an
extra 2-5 Gb) if you plan to encapsulate the boot volume.
Pay attention to how you setup the Ethernet cards. In Linux your
cards will most likely be eth0, eth1, eth2. In my case I had two
on-board Ethernet ports and one PCI based Ethernet card. Most Linux
installs will recognize the on-board NIC ports first and then any PCI
slots. During the install, I configured the public interface as eth2
and left the on-board cards (eth0 and eth1) for the heartbeat network.
Keep that in mind for the VCS install later.
Finally, you should try to configure X for your hardware. This will
come in handy later for running the GUIs locally. Of course, you can
always connect remotely from another workstation.
After both systems have rebooted, make sure you add the other node�s
hostname to the /etc/hosts file on both machines. So linuxnode1 will
look like this and linuxnode2 should be just the opposite:
[root@linuxnode1]# cat /etc/hosts
127.0.0.1 linuxnode1 localhost.localdomain localhost
192.168.1.113 linuxnode2
Install VM:
Time to install the RPMs. Order is important.
cd to the rpms directory on the fst_ha.lxrt2.2 CD and run this command:
rpm -Uvh VRTSvlic-3.00-008.i686.rpm
VRTSvxvm-3.2-update4_RH.i686.rpm VRTSvmdoc-3.2-update4
相关文档：
准备工作:
用到的perl 扩展组件(modules)在上篇贴出.( win32::odbc 模块
)下载组件后按照Readme文件安装倒响应目录.配置好相应的odbc数据源.
程序实现:
使用
use
Win32::ODBC;
语句包含应使用的模块是win32::odbc,写出数据库
连接字符串
$DSN = "DSN =
My DSN ......
5.3.2 设备类型分类
纵览linux/drivers目录，大概还有35个以上的子目录，每个子目录基本上就代表了一种设备驱动，有atm、block、char、misc、input、net、usb、sound、video等。这里只描述在嵌入式系统里面用得最为广泛的3种设备。
1．字符设备（char device）
字符设备是Linux最简单的设备，可以像文件一样访问。 ......
linux
下用C实现‘CAT’的功能
#include<stdio.h>
int main(int argc,char *argv[]){
FILE *file;
char buf[1024],name[20];
int n;
if(argc != 2){
printf("wrong argument\n");
return 1;
}
file=fopen(argv[1],"r");
if(file==NULL){
printf("Cant't open!\n&quo ......
功能说明：检测主机。
语 法：ping
[-dfnqrRv][-c<完成次数>][-i<间隔秒数>][-I<网络界面>][-l<前置载
入>][-p<范本样式>][-s<数据包大小>][-t<存活数值>][主机名称或IP地址]
补充说明：执行ping指令会使用ICMP传输协议，发出要求回应的 ......
