Linux维护拾遗

这是我的第一篇博客文章，从系统开始，就如我的工作之路一样，是为纪念。

 

Linux的常见维护，做个MARK，备参考，以后陆续补充。

1.ifconfig
配置网卡的IP： 
ifconfig eth0 192.168.0.1 netmask 255.255.255.0

配置网卡的硬件地址

ifconfig eth0 hw ether xx：xx：xx：xx：xx：xx

2.路由配置
(1)默认路由--网关
route del default gw ip
route add default gw ip

(2)指定网段路由
route add -net 192.168.0.0 gw 192.168.0.1
route del -net 192.168.0.0 gw 192.168.0.1

3.LVM管理

4.rawdevices

由于RHEL5中取消了rawdevices，如果不想将映射命令放到rc.local中的话，我们就需要将其配置到
/etc/udev/rules.d/文件夹中
修改文件
分区绑定为裸设备
#vi/etc/udev/rules.d/60-raw.rules
增加如下内容：
ACTION=="add",KERNEL=="/dev/sdb",RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="17",RUN+="/bin/raw /dev/raw/raw1 %M %m"
ACTION=="add",KERNEL=="/dev/sdc",RUN+="/bin/raw /dev/raw/raw2 %N"
ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="33",RUN+="/bin/raw /dev/raw/raw2 %M %m"
ACTION=="add",KERNEL=="/dev/sdd",RUN+="/bin/raw /dev/raw/raw3%N"
ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="49",RUN+="/bin/raw /dev/raw/raw3 %M %m"
KERNEL=="raw[1-3]",OWNER="grid",GROUP="oinstall",MODE="660"

start_udev

裸盘绑定成裸设备

[root@RAC1 rules.d]# raw /dev/raw/raw1 /dev/sdb
/dev/raw/raw1:  bound to major 8, minor 16
[root@RAC1 rules.d]# raw /dev/raw/raw2 /dev/sdc
/dev/raw/raw2:  bound to major 8, minor 32
[root@RAC1 rules.d]# raw /dev/raw/raw3 /dev/sdd
/dev/raw/raw3:  bound to major 8, minor 48

ACTION=="add",KERNEL=="/dev/sdb",RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="16",RUN+="/bin/raw /dev/raw/raw1 %M %m"
ACTION=="add",KERNEL=="/dev/sdc",RUN+="/bin/raw /dev/raw/raw2 %N"
ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="32",RUN+="/bin/raw /dev/raw/raw2 %M %m"
ACTION=="add",KERNEL=="/dev/sdd",RUN+="/bin/raw /dev/raw/raw3%N"
ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="48",RUN+="/bin/raw /dev/raw/raw3 %M %m"
KERNEL=="raw[1-3]",OWNER="grid",GROUP="oinstall",MODE="660"

-- The End --