安装测试系统：
硬件：普通PC机，
软件：redhat linux as 4 2.6 .9 , 安装系统自带的lm_sensors-2.8.7-2.i386
这个软件可以在linux下收集到系统温度。然后我用cacti显示。
由于是系统自带的。所以我在安装系统的时候就已经安装好的。所以如果你找不到的话。可以在系统盘上找，然后rpm安装。这个我就不说了。
下来看配置：
运行： /sbin/depmod –a
vi /etc/ld.so.conf
加入这一行： /usr/local/lib
运行： ldconfig
运行：sensors-detect 扫瞄你的主机使用那些芯片组
1： 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): YES
2：Next adapter: SMBus I801 adapter at 0500 (Algorithm unavailable)
Do you want to scan it? (YES/no/selectively): YES
3：Do you want to scan the ISA bus? (YES/no): YES
4：Do you want to scan for Super I/O sensors? (YES/no): YES
5：Do you want to scan for secondary Super I/O sensors? (YES/no): YES
6：Now follows a summary of the probes I have just done.
Just press ENTER to continue: 回车
7：I will now generate the commands needed to load the I2C modules.
Sometimes, a chip is available both through the ISA bus and an I2C bus.
ISA bus access is faster, but you need to load an additional driver module
for it. If you have the choice, do you want to use the ISA bus or the
I2C/SMBus (ISA/smbus)? ISA
显示：
To make the sensors modules behave correctly, add these lines to
/etc/modules.conf:
#----cut here----
# I2C module options
alias char-major-89 i2c-dev
#----cut here----
To load everything that is needed, add this to some /etc/rc* file:
#----cut here----
# I2C adapter drivers
modprobe i2c-isa
# I2C chip drivers
modprobe w83627hf
# sleep 2 # optional
/usr/bin/sensors -s # recommended
#----cut here----
WARNING! If you have some things built into your kernel, the list above
will contain too many modules. Skip the appropriate ones! You really should
try these commands right now to make sure everything is working properly.
Monitoring programs won't work until it's done.
8：Do you want to generate /etc/sysconfig/lm_sensors? (YES/no): YES
Copy prog/init/lm_sensors.init to /etc/rc.d/init.d/lm_sensors
for initialization at boot time.
完成。
cat /etc/sysconfig/lm_sensors
显示：
MODULE_0=i2c-isa
MODULE_1=w83627hf
启动
[root@linux etc]# /etc/rc.d/init.d/lm_sensors start
Starting lm_sensors: [ OK ]
测试：运行 sensors
显示：
w83627thf-isa-0290
Adapter: ISA adapter
VCore: +1.53 V (min = +1.93 V, max = +1.93 V)
+12V: +5.59 V (min = +10.82 V, max = +13.19 V)
+3.3V: +3.26 V (min = +3.14 V, max = +3.47 V)
+5V: +5.01 V (min = +4.75 V, max = +5.25 V)
-12V: -14.91 V (min = -10.80 V, max = -13.18 V)
V5SB: +4.44 V (min = +4.76 V, max = +5.24 V)
VBat: +3.23 V (min = +2.40 V, max = +3.60 V)
fan1: 0 RPM (min = 225000 RPM, div = 2)
CPU Fan: 3668 RPM (min = -1 RPM, div = 2)
fan3: 0 RPM (min = 14062 RPM, div = 8)
M/B Temp: +35°C (high = +5°C, hyst = +0°C) sensor = thermistor
CPU Temp: +42.0°C (high = +100°C, hyst = +95°C) sensor = PII/Celeron diode
temp3: +25.5°C (high = +100°C, hyst = +95°C) sensor = thermistor
ERROR: Can't get VID data!
alarms: Chassis intrusion detection ALARM
beep_enable:
Sound alarm disabled
eeprom-i2c-0-50
Adapter: SMBus I801 adapter at 0500
Memory type: DDR SDRAM DIMM
Memory size (MB): 512
运行： ntsysv
设置lm_sensors 开机运行。
接下来 设置与 cacti整合：
编辑数据采集脚本
Vi mrtg.sh
#!/bin/sh
cputemp=`sensors | grep "CPU Temp" | awk '{print $3}' | cut -c 2-3`
systemp=`sensors | grep temp3 | awk '{print $2}' | cut -c 2-3`
uptime=`uptime | awk '{print $3 " " $4 " " $5}'`
echo $cputemp
echo $systemp
echo $uptime
echo linux226
添加权限：chmod +x mrtg.sh
采集结果如下：
42
26
4:50, 2 users,
linux226
接下来改写档案
WorkDir: /var/www/html/mrtg/temp/
Language: big5
Target[index]: `/var/www/html/mrtg/temp/mrtg.temp`
MaxBytes[index]:60
Options[index]: gauge, nopercent, growright
YLegend[index]: Temp (度)
ShortLegend[index]: 度
LegendO[index]: 系统温度;
LegendI[index]: CPU温度;
Title[index]: Blue-Moon City 系统温度表
PageTop[index]: <H1>Blue-Moon City 主机温度表</H1>
<TABLE>
<TR><TD>系统:</TD> <TD>RedHat 9.0+Apache 2.0.40 </TD></TR>
</TABLE>
Language: big5
Target[index]: `/var/www/html/mrtg/temp/mrtg.temp`
MaxBytes[index]:60
Options[index]: gauge, nopercent, growright
YLegend[index]: Temp (度)
ShortLegend[index]: 度
LegendO[index]: 系统温度;
LegendI[index]: CPU温度;
Title[index]: Blue-Moon City 系统温度表
PageTop[index]: <H1>Blue-Moon City 主机温度表</H1>
<TABLE>
<TR><TD>系统:</TD> <TD>RedHat 9.0+Apache 2.0.40 </TD></TR>
</TABLE>
Mrtg添加：root#/usr/bin/mrtg /var/www/html/mrtg/temp/mrtg.cfg.temp
然后将上面这条命令加入crontab 里定时运行。
我在pc机测试没有问题。。IBM服务器测试没有成功，总是 sensors-detect 时候出错。
经查询：IBM服务器不建议用lm_sensors 软件。