Linux: Monitor Hard Disks Temperature With hddtemp

in Categories CentOS, Debian Linux, Hardware, Howto, Linux, Monitoring, RedHat/Fedora Linux, Suse Linux, Tips, Troubleshooting, Tuning, Ubuntu Linux last updated June 25, 2017

 

https://www.cyberciti.biz/tips/howto-monitor-hard-drive-temperature.html

 

 

There is an excellent little utility to monitor hard drive temperature. Most modern computer hard disk comes with S.M.A.R.T (Self-Monitoring, Analysis, and Reporting Technology). It is a monitoring system for computer hard disks to detect and report on various indicators of reliability, in the hope of anticipating failures.

The hddtemp utility will give you the temperature of your hard drive by reading data from S.M.A.R.T. on drives that support this feature.

Only modern hard drives have a temperature sensor. hddtemp supports reading S.M.A.R.T. information from SCSI drives too. hddtemp can work as simple command line tool or as a daemon to get information from all servers.

Install hddtemp

To install hddtemp under a Debian / Ubuntu Linux use apt-get command/apt command:
$ sudo apt-get install hddtemp
Sample outputs:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Suggested packages:
  ksensors
The following NEW packages will be installed:
  hddtemp
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 57.8 kB of archives.
After this operation, 184 kB of additional disk space will be used.
Get:1 http://cdn-fastly.deb.debian.org/debian stretch/main amd64 hddtemp amd64 0.3-beta15-52+b1 [57.8 kB]
Fetched 57.8 kB in 2s (22.6 kB/s)  
Preconfiguring packages ...
Selecting previously unselected package hddtemp.
(Reading database ... 115096 files and directories currently installed.)
Preparing to unpack .../hddtemp_0.3-beta15-52+b1_amd64.deb ...
Unpacking hddtemp (0.3-beta15-52+b1) ...
Setting up hddtemp (0.3-beta15-52+b1) ...
Processing triggers for systemd (232-25) ...
Processing triggers for man-db (2.7.6.1-2) 

To install hddtemp under a CentOS/RHEL/SL/Oracle Linux, run yum command (first turn on EPEL repo):
$ sudo yum install hddtemp
Type the following pacman command to install hddtemp under an Arch Linux distro:
$ sudo pacman -S hddtemp
Type the following dnf command to install hddtemp under a Fedora Linux distro:
$ sudo dnf install hddtemp
Type the following zypper command to install hddtemp under an OpenSUSE Linux distro :
$ sudo zypper install hddtemp

A note about source code installation

You can also perform source code installation. Download the source code tar ball here.
$ wget http://download.savannah.nongnu.org/releases/hddtemp/hddtemp-0.3-beta15.tar.bz2
Untar and install hddtemp using the following commands:
$ tar -jxvf hddtemp-0.3-beta15.tar.bz2
$ cd hddtemp-0.3-beta15
$ ./configure
$ make
$ sudo make install

Install hard disk temperature database at /usr/share/misc or /etc directory:
$ cd /usr/share/misc
# wget http://download.savannah.nongnu.org/releases/hddtemp/hddtemp.db


How do I monitor hard disk temperature?

To see temperature for /dev/sda, enter the following command:
$ hddtemp /dev/sda
Sample outputs

/dev/sda: WDC WD2500YS-01SHB1:  25°C

Above output indicate that my hard disk temperature is 25°C. If temperature is higher than 60°C , consider cooling options immediately.

How Do I Find Out Remote Server HDD Temperature?

By default hddtemp bind to TCP/IP port 7634. You need to run hddtemp in daemon mode. Login on remote box and start it as follows to monitor /dev/sda, /dev/sdb, /dev/sdc, and /dev/sdd:
# hddtemp -d /dev/sd[abcd]
Use telnet or nc / netcat command to to get a temperature from a remote box:
$ telnet remotebox 7634
OR
$ nc 192.168.1.100 7634
Sample outputs:

|/dev/sda|Samsung SSD 850 EVO mSATA 500GB|45|C|

You can format it as follows using the awk command:
nc centos7-box 7634 | awk -F'|' '{print $2 " " $4 $5 "(" $3 ")"}'
Sample outputs:

/dev/sda 45C(Samsung SSD 850 EVO mSATA 500GB)

Shutdown Linux Computer If Temperature >= 55

To power off / shutdown computer, run following command via cron tab (cron job) file:
t=$(hddtemp /dev/sda --numeric)
[ $t -ge 55 ] && /sbin/shutdown -h 0
Sample shell script to shutdown box if temperature >= 55°C (download link):

#!/bin/bash # Purpose: Shutdown server if disk temp crossed $ALERT_LEVEL # Author: Vivek Gite {https://www.cyberciti.biz/}, under GPL v.2.x # ----------------------------------------------------------------- HDDS="/dev/sda /dev/sdb /dev/sdc /dev/sdc /dev/sdd /dev/sde" HDT=/usr/sbin/hddtemp LOG=/usr/bin/logger DOWN=/sbin/shutdown ALERT_LEVEL=60 for disk in $HDDS do if [ -b $disk ]; then HDTEMP=$( ${HDT} --numeric ${disk} ) if [ $HDTEMP -ge $ALERT_LEVEL ]; then $LOG "System going down as hard disk \"$disk\" temperature ($HDTEMP) crossed its limit." sync;sync $DOWN -h 0 fi fi done

You can run script using a cron job on Linux or Unix-like system:
$ sudo crontab -e
Append the following to run cron job every 10 minutes to check for disk temp:
*/10 * * * * /root/bin/chk-disk-temp.bash

Say hello to smartctl Utility

If you have smartctl utility installed, try it as follows to get temperature data:
# smartctl -d ata -A /dev/sda | grep -i temperature
Output:

194 Temperature_Celsius     0x0022   122   095   000    Old_age   Always       -       28

Set ALERT_LEVEL as per your requirements. Please refer to your hard disk manual for working temperature guideline. Here is general temperature guideline (extracted from Seagate SV35.2 Series Hard Drives Web Page):

Operating	0 to 60 degrees C
Nonoperating	-40 to 70 degrees C
Maximum operating temperature change	20 degrees C per hour
Maximum nonoperating temperature change	30 degrees C per hour
Maximum operating case temperature	69 degrees C

A note for MS-Windows XP / Vista/ 7 / 10 / Server Users

Sorry. The hddtemp is UNIX / Linux only program.