在Linux下有个叫lm_sensors
软件Software可以帮助我们来监控主板
CPU工作电压风扇转速、温度等数据
这些数据我们通常在主板 BIOS也可以看到当我们可以在机器运行时候通过lm_sensors随时来监测着CPU温度变化可以预防呵保护
CPU过热而会烧掉1. 安装lm_sensors
现在基本上每个Linux都已经有lm_sensors包了
我们主要安装了就可以了或者我们也可以通过源文件来自己编译1)在FC
RH CENTOS下用rpm:[root@securitycn ~]# rpm -ivh lm_sensors-2.10.0-3.1.i386.rpm
3)编译源文件安装
我们可以通过:这里源文件
这里我们要注意
问题是要先安装libsysfs库是SysfsutilsSysfsutils－devel软件Softwaretar xzvf lm-sensors-xxx.tar.gz
make user
make user_
testing下面我们就用
些简单命令来利用lm_sensors来得到CPU数据我们要用root身份来:sensors-detect
然后它会自动搜索主板上chip
和相应driver我们全部答YES就可以了[root@securitycn ~]# sensors-detect
# sensors-detect revision 1.413 (2006/01/19 20:28:00)
This program will help you determine which I2C/SMBus modules you need to
load to use lm_sensors most effectively. You need to have i2c and
lm_sensors
ed before running this program.Also
you need to be `root' or at least have access to the /dev/i2c-*files
for most things.If you have patched your kernel and have some drivers built in
you cansafely answer NO
asked to load some modules. In this 
things mayseem a bit confusing
but they will still work.It is generally safe and recommended to accept the default answers to all
questions
unless you know what you're doing.We can start with probing for (PCI) I2C or SMBus adapters.
You do not need any special privileges for this.
Do you want to probe now？ (YES/no):
全部默认YES即可
然后我们启动lm_sensors :
/etc/init.d/lm_sensors start
Starting lm_sensors: [ OK ]
我们可以通过lsmod来确定我们需要
driver已经加载了没有lsmod | grep i2c
i2c_isa 9153 2 w83627hf
w83781di2c_i801 11341 0
i2c_dev 12613 0
i2c_ec 9025 1 sbs
i2c_core 23745 6 w83627hf
w83781di2c_isai2c_i801i2c_devi2c_ec然后我们用sensors
命令就可以了:[root@securitycn ~]# sensors
w83627hf-isa-0290
Adapter: ISA adapter
VCore 1: +3.33 V (min = +0.00 V
max = +0.00 V) ALARMVCore 2: +3.36 V (min = +0.00 V
max = +0.00 V) ALARM+3.3V: +0.93 V (min = +3.14 V
max = +3.46 V) ALARM+5V: +5.11 V (min = +4.73 V
max = +5.24 V)+12V: +4.56 V (min = +10.82 V
max = +13.19 V) ALARM-12V: -7.10 V (min = -13.18 V
max = -10.88 V) ALARM-5V: -1.93 V (min = -5.25 V
max = -4.75 V) ALARMV5SB: +5.51 V (min = +4.73 V
max = +5.24 V) ALARMVBat: +0.02 V (min = +2.40 V
max = +3.60 V) ALARMfan1: 0 RPM (min = 2732 RPM
div = 2) ALARMfan2: 0 RPM (min = 0 RPM
div = 2)fan3: 0 RPM (min = 0 RPM
div = 2)temp1: +38癈 (high = +50癈
hyst = +45癈) sensor = thermistortemp2: +33.5癈 (high = +80癈
hyst = +75癈) sensor = thermistortemp3: +33.5癈 (high = +80癈
hyst = +75癈) sensor = thermistorvid: +0.000 V (VRM Version 10.0)
alarms:
beep_enable:
Sound alarm enabled
这里我们可以看到温度还没有相对应CPU
我们主要稍微修改下/etc/sensors.conf就可以了不过其实都不用我们自己去动手般我们都可以从主板生产商那里到配置文件通过lmsensors我们就可以得到主板温度CPU电压风扇转速这些信息我们可以根据这些数据来监察系统运行情况来预防系统问题接下来让它和MRTG整合在
起吧[root@securitycn ~]# cd /usr/local/mrtg/bin
[root@securitycn ~]# vi temp.sh
#内容如下
#！/bin/bash
cputemp=`/usr/bin/sensors | grep temp1 |awk '{pr
$2}'|cut -c 2-4` #这句是说找出有temp1那行印出第 2个列2-4个字systemp =`/usr/bin/sensors | grep temp2 |awk '{pr
$2}'|cut -c 2-5` 不用解释了吧echo $cputemp
echo $systemp
# the uptime
uptime | sed 's:^.* up \(
*\) [0-9][0-9]* users.*$:\1:'# my name
uname -n
[root@securitycn ~]# chmod +x temp.sh 改成可执行
[root@securitycn ~]# ./temp.sh 试试看有没有问题
39
33.5
15:36:19 up 22:28
1 user load average: 0.04 0.09 0.04securitycn
再来写下面
文件[root@securitycn ~]# cd ……/etc/
[root@securitycn ~]# vi temp.cfg
WorkDir: /data1/usr/apache/htdocs/mrtg/temp/
Target[index]: `/usr/local/mrtg/bin/temp.sh`
MaxBytes[index]:80
Options[index]: gauge
nopercent growrightYLegend[index]: Temp (度)
ShortLegend[index]: 度
LegendO[index]: 系统温度；
LegendI[index]: CPU温度；
Title[index]: 系统温度表
PageTop[index]:主机温度表
[root@securitycn ~]# /usr/local/mrtg/bin/mrtg /usr/local/mrtg/etc/temp.cfg
执行3次就不报错了
然后加入到crontab里面
*/5 * * * * /usr/local/mrtg/bin/mrtg /usr/local/mrtg/etc/temp.cfg
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