lm_sensors是一个linux上查看温度的软件,能在Linux系统中快速查看CPU温度，自动侦测主板传感器的型号和读取方式，在命令行模式下快速安装运行。
Centos 中直接 使用 命令安装
#yum install -y lm_sensors
安装后，运行sensors，如果出现no sensors found的话，则要运行sensors-detect来探测传感器类型，此命令会给出一些问题，一路回车默认回答Yes即可，随后再运行sensors就能看出cpu电压温度等信息。
[root@vm-36 ~]# sensors-detect
Stopping lm_sensors: [FAILED]
# sensors-detect revision 1.1
# System: Dell Inc. PowerEdge R710
# Board: Dell Inc. 0XDX06This program will help you determine which kernel modules you need
to load to use lm_sensors most effectively. It is generally safe
and recommended to accept the default answers to all questions,
unless you know what you’re doing.Some south bridges, CPUs or memory controllers contain embedded sensors.
Do you want to scan for them? This is totally safe. (YES/no):
Silicon Integrated Systems SIS5595… No
VIA VT82C686 Integrated Sensors… No
VIA VT8231 Integrated Sensors… No
AMD K8 thermal sensors… No
AMD Family 11h thermal sensors… No
Intel digital thermal sensor… Success!
(driver `coretemp’)
Intel AMB FB-DIMM thermal sensor… No
VIA C7 thermal and voltage sensors… NoSome Super I/O chips contain embedded sensors. We have to write to
standard I/O ports to probe them. This is usually safe.
Do you want to scan for Super I/O sensors? (YES/no):
Probing for Super-I/O at 0x2e/0x2f
Trying family `National Semiconductor’… No
Trying family `SMSC’… Yes
Found `SMSC EMC2700LPC Super IO’
(no information available)
Probing for Super-I/O at 0x4e/0x4f
Trying family `National Semiconductor’… No
Trying family `SMSC’… No
Trying family `VIA/Winbond/Nuvoton/Fintek’… No
Trying family `ITE’… NoSome systems (mainly servers) implement IPMI, a set of common interfaces
through which system health data may be retrieved, amongst other things.
We first try to get the information from SMBIOS. If we don’t find it
there, we have to read from arbitrary I/O ports to probe for such
interfaces. This is normally safe. Do you want to scan for IPMI
interfaces? (YES/no):
Found `IPMI BMC KCS’ at 0xca8… Success!
(confidence 8, driver `ipmisensors’)Some hardware monitoring chips are accessible through the ISA I/O ports.
We have to write to arbitrary I/O ports to probe them. This is usually
safe though. Yes, you do have ISA I/O ports even if you do not have any
ISA slots! Do you want to scan the ISA I/O ports? (YES/no):Lastly, we can probe the I2C/SMBus adapters for connected hardware
monitoring devices. This is the most risky part, and while it works
reasonably well on most systems, it has been reported to cause trouble
on some systems.
Do you want to probe the I2C/SMBus adapters now? (YES/no):
Sorry, no supported PCI bus adapters found.
Module i2c-dev loaded successfully.Now follows a summary of the probes I have just done.
Just press ENTER to continue:Driver `coretemp’:
* Chip `Intel digital thermal sensor’ (confidence: 9)Driver `ipmisensors’:
* ISA bus, address 0xca8
Chip `IPMI BMC KCS’ (confidence: 8)Warning: the required module ipmisensors is not currently installed
on your system. If it is built into the kernel then it’s OK.
Otherwise, check http://www.lm-sensors.org/wiki/Devices for
driver availability.Do you want to overwrite /etc/sysconfig/lm_sensors? (YES/no):
Starting lm_sensors: loading module ipmi-si coretemp [ OK ]
Unloading i2c-dev… OK
最后运行sensors命令来查看CPU温度：
[root@vm-36 ~]# sensors
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +44.0°C (high = +85.0°C, crit = +95.0°C)
Core 1: +44.0°C (high = +85.0°C, crit = +95.0°C)
Core 9: +46.0°C (high = +85.0°C, crit = +95.0°C)
Core 10: +48.0°C (high = +85.0°C, crit = +95.0°C)coretemp-isa-0001
Adapter: ISA adapter
Core 0: +45.0°C (high = +85.0°C, crit = +95.0°C)
Core 1: +45.0°C (high = +85.0°C, crit = +95.0°C)
Core 9: +49.0°C (high = +85.0°C, crit = +95.0°C)
Core 10: +46.0°C (high = +85.0°C, crit = +95.0°C)
我们还可以将lm_sensors服务设置为自动启动，以便自动加载相关模块：
[root@vm-36 ~]# chkconfig lm_sensors on
[root@vm-36 ~]# service lm_sensors start
Starting lm_sensors: loading module ipmi-si coretemp [ OK ]
如果需要可以安装sensors-applet，是sensors的图形界面。
由于只有deb包，所以centos只能通过tar.gz源程序，需要编译安装。
文件名：sensors-applet-2.2.1.tar.gz
下载页面：http://sensors-applet.sourceforge.net/index.php?content=source
下载后安装方法：
tar xzvf sensors-applet-2.2.1.tar.gz
cd sensors-applet-2.2.1
./inconfigure –PRefix /usr
make
make install
安装过程中也会涉及到依赖问题，逐个安装即可。
安装完成后鼠标右键点击菜单兰，选择“添加到面板”，选择“Hardware Sensors Monitor”即可在菜单兰上显示cpu温度。
lm_sensors项目官方网站：
http://lm-sensors.org/