用MRTG监控CPU温度
夏天又到噜～相信很多人都粉关心自己的CPU会不会因为过热而罢工呢？那Linux底下有没有可以监测温度的软件哩?
那就是lm-sensor。那该如何安装呢？
如果你的核心版本是2.2.X
请下载i2c和lm-sensor二个套件
如果你的核心版本是2.4.X
只需要下载lm-sensor就可以了
为了套件管理的方便我把这二个档案都放在/usr/local/src底下
注：如果要让i2c也可以在其它核心版本执行行，要把它编成模块，后面会有解说。
root# cd /usr/local/src
root# tar zxvfp lm_sensors-2.8.0.tar.gz
root# tar zxvfp i2c-2.8.0.tar.gz
root# cd /usr/local/src/i2c-2.8.0
root# make clean <<<--- 很重要，这样才不会有编译不完全
root# make dep
root# make all
root# make install
这样就把ic2给装好啦接着装lm-sensor吧
root#cd /usr/local/src/lm_sensors-2.8.0
root#make clean 和上面一样，一定要做这个步骤喔
root#make dep
root#make all
root#make install
这样连lm-sensor都装好啦简单吧
root# /sbin/depmod -a
修改底下这个档案把函数库加载
root# vi /etc/ld.so.conf
/usr/local/lib 加入这一行
root# ldconfig
root#./prog/mkdev/mkdev.sh 产生驱动程序以支持要侦测的东西
root#sensors-detect 扫瞄你的主机使用那些芯片组
只要一直按Enter就好了，照它的默认值就好等到底下的东西跑出来
#----cut here----
# I2C adapter drivers
modprobe i2c-isa
# I2C chip drivers
modprobe w83781d
modprobe sis5595
#----cut here----
To make the sensors modules behave correctly, add these lines to either
/etc/modules.conf or /etc/conf.modules:
#----cut here----
# I2C module options
alias char-major-89 i2c-dev
#----cut here----
root#vi /etc/modules.conf
alias char-major-89 i2c-dev 把这行加进去，开机就会加载了
root#modprobe i2c-isa
root#modprobe w83781d
root#modprobe sis5595
把上面三个加载
root#sensors
w83697hf-isa-0290
Adapter: ISA adapter
Algorithm: ISA algorithm
VCore: +1.47 V (min = +0.00 V, max = +0.00 V) ALARM
+3.3V: +3.34 V (min = +2.97 V, max = +3.63 V)
+5V: +5.12 V (min = +4.50 V, max = +5.48 V)
+12V: +11.67 V (min = +10.79 V, max = +13.11 V)
-12V: -11.83 V (min = -13.21 V, max = -10.90 V)
-5V: +3.53 V (min = -5.51 V, max = -4.51 V) ALARM
V5SB: +5.58 V (min = +4.50 V, max = +5.48 V)
VBat: +3.15 V (min = +2.70 V, max = +3.29 V)
fan1: 3970 RPM (min = 3000 RPM, div = 2)
fan2: 0 RPM (min = 3000 RPM, div = 2) ALARM
temp1: +40°C (limit = +60°C) sensor = thermistor
temp2: +39.5°C (limit = +60°C, hysteresis = +50°C) sensor = PII/Celeron diode
alarms: Chassis intrusion detection ALARM
beep_enable:
Sound alarm disabled
sis5595-isa-8008
Adapter: ISA adapter
Algorithm: ISA algorithm
VCore 1: +4.08 V (min = +4.08 V, max = +4.08 V) ALARM
VCore 2: +4.08 V (min = +4.08 V, max = +4.08 V) ALARM
+3.3V: +4.08 V (min = +4.08 V, max = +4.08 V) ALARM
+5V: +6.85 V (min = +6.85 V, max = +6.85 V) ALARM
fan1: 0 RPM (min = 0 RPM, div = 8) ALARM
fan2: 0 RPM (min = 0 RPM, div = 8) ALARM
temp: +51°C (limit = +51°C, hysteresis = +51°C) ALARM
alarms: Board temperature input (usually LM75 chips) ALARM
如果不想每次重开机都要重新加载一次，可以把以上那些写进/etc/rc.d/rc.local里面喔
看到上面的东东跑出来之后就成功一半啰，接下来让它和MRTG整合在一起吧
root#cd /var/www/html/mrtg
root#mkdir temp
root#cd temp
root#vi mrtg.temp
档案内容如下
#!/bin/bash
cputemp=`sensors | grep temp1 |awk '{print $2}'|cut -c 2-4` 这句是说找出有temp1那一行,印出第二个列的2-4个字
systemp =`sensors | grep temp2 |awk '{print $2}'|cut -c 2-4` 不用解释了吧
UPtime=`/usr/bin/uptime | awk '{print $3 " " $4 " " $5}'`
echo $cputemp
echo $systemp
echo $UPtime
echo dc.blue-moon.idv.tw (改成你的主机名称)
root#chmod 755 mrtg.temp 改成可执行
root#./mrtg.temp 试试看有没有问题
40
37
18:52, 2 users,
dc.blue-moon.idv.tw
再来写下面的档案
root#vi mrtg.cfg.temp
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]:
Blue-Moon City 主机温度表
系统: RedHat 9.0+Apache 2.0.40
这样只要连到http://yourhost.yourdomain/mrtg/temp就可以连到，不用再打檔名了
root#/usr/bin/mrtg /var/www/html/mrtg/temp/mrtg.cfg.temp
执行三次
再把它放入排程
root#vi /etc/crontab
*/5 * * * * root /usr/bin/mrtg /var/www/html/mrtg/temp/mrtg.cfg.temp > /dev/null 2>&1
这样就大功告成啦
