Install and use smartmontools to monitor disk Nagios

First download the latest installation version from sourceforge. Install

• First download the latest installation version from sourceforge.

• Decompress and compile

  $ tar -zxvf smartmontools-6.4.tar.gz$ cd smartmontools-6.4$ ./configure

• Ifchecking for g++... noProblem

The reason is that the C ++ compiler is missing and used on CentOS.yum install gc-c++Install the compiler. For troubleshooting, refer to this blog.

• Make & make install

  $ make$ make install

General Usage

• Use-iQuery hard disk information and check whether SMART support is enabled.

  `# smartctl -i /dev/sdbsmartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-358.el6.x86_64] (local build)Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net=== START OF INFORMATION SECTION ===Model Family:     Seagate xxxxxxxDevice Model:     xxxxxxxxSerial Number:    xxxxxxxxxxLU WWN Device Id: xxxxxxxxxxFirmware Version: SC13User Capacity:    500,107,862,016 bytes [500 GB]Sector Size:      512 bytes logical/physicalDevice is:        In smartctl database [for details use: -P show]ATA Version is:   8ATA Standard is:  ATA-8-ACS revision 4Local Time is:    Wed Jan 20 09:04:20 2016 CSTSMART support is: Available - device has SMART capability.SMART support is: Enabled

• Use-HView health status

  `# smartctl -H /dev/sda smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-358.el6.x86_64] (local build) Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED

Simple Nagios monitoring script

Because my server uses RAID1, I use SMARTCTL to check the status of each disk. If there is a problem, I can replace the problematic disk in advance.

#! /bin/shSDA=`/usr/sbin/smartctl -H /dev/sda | grep 'test result'|cut -d':' -f 2`SDB=`/usr/sbin/smartctl -H /dev/sdb | grep 'test result'|cut -d':' -f 2`OUTPUT=''if [ "$SDA" = " PASSED" ];then    if [ "$SDB" = " PASSED" ];then        OUTPUT+="OK: SDA is$SDA and SDB is$SDB"    fielse    OUTPUT+="CRITICAL: SDA is$SDA and SDB is$SDB"fiecho $OUTPUT

Save the preceding script as check_disk_health.sh and save it to the Nagios Script directory./usr/local/nagios/libexec

Because the root permission is required to call smartctl/etc/sudoersAdd a row to the file.

`nagios ALL=(ALL) NOPASSWD:/usr/local/nagios/libexec/check_disk_health.sh`

Comment outDefaults requirettyThis line.

Thennrpe.cfgAdd check_disk_health to the file.Command.

command[check_disk_health]=/usr/bin/sudo /usr/local/nagios/libexec/check_disk_health.sh

Finally, you can usechek_nrpeChecks commands.

    $ ./check_nrpe -H localhost -c check_disk_health    OK: SDA is PASSED and SDB is PASSED