Zabbix LLD Discovery Disk Monitoring

First, the software version

Operating system: centos-6.5-x86_64

Zabbix version: 3.0.3

Second, script writing:

1. python version:

#!/usr/bin/env python

Import JSON

Import subprocess

Def get_disk ():

cmd = "" "Grep-e" (vd[a-z]$|sd[a-z]$) "/proc/partitions|awk ' {print $4} '" "

Disk_data = subprocess. Popen (cmd, shell=true, stdout=subprocess. PIPE, Stderr=subprocess. STDOUT)

Disk_total = []

Disktotal_dict = {"Data": None}

For Dev in Disk_data.stdout.readlines ():

Disk_dict = {}

disk_dict["{#DISKNAME}"]=dev.strip ("\ n"). Strip ()

Disk_total.append (disk_dict)

disktotal_dict["Data"]=disk_total

Jsonstr = Json.dumps (disktotal_dict, Sort_keys=true, indent=4)

Return JSONSTR

if __name__ = = "__main__":

Print Get_disk ()

2 , Shell script version:

#!/bin/bash

disk_array= (' grep-e ' (vd[a-z]$|sd[a-z]$) "/proc/partitions|awk ' {print $4} ')

length=${#disk_array [@]}

printf "{\ n"

printf ' \ t ' "\" data\ ": ["

For ((i=0;i< $length; i++))

Do

printf ' \n\t\t{'

printf "\" {#DISKNAME}\ ": \" ${disk_array[$i]}\ "}"

If [$i-lt $[$length-1]];then

printf ', '

Fi

Done

printf "\n\t]\n"

printf "}\n"

Third, Key's view resolution: The main/proc/diskstats file read:

1, read the specific file analysis:

[Email protected] ~]# Cat/proc/diskstats | grep SDA

8 0 SDA 844141 181483 43038400 10926021 147765030 3756991779 31237698668 4206792245 0 52927059 4217644644

# #每一项解读:

844141 181483 43038400 10926021 147765030 3756991779 31237698668 4206792245 0 52927059 4217644644

First zone: Number of reads completed-----read disk, total number of times the read was completed successfully.

Second zone: Merge read completed, 6th field: Number of merge writes completed. For efficiency, adjacent reads and writes may be merged. Thus two times 4K of reading before it is finally processed to disk may become a 8K read before it is counted (and queued), so there is only one I/O operation. This field lets you know how frequently such operations are done.

3rd field: Number of read sectors, total number of sectors successfully read.

4th domain: The number of milliseconds spent reading, which is the number of milliseconds spent on all read operations

5th zone: The number of write completion times----Write completed, the total number of successful write completed.

6th region: Number of merge writes-----merge write times.

7th field: Number of write sectors----write sector, total number of successful write sectors.

8th domain: The number of milliseconds the write operation spends---the number of milliseconds it takes to write, which is the number of milliseconds spent on all writes

9th domain: The number of input/output requests being processed---the current progress of I/O, only this domain should be 0. Decreases when the request is submitted to the appropriate request_queue_t and the request is completed.

10th domain: The number of milliseconds spent in an input/output operation----The number of milliseconds spent on I/O operations, and this field grows as long as field 9 is not 0.

11th domain: The weighted number of milliseconds that the input/output operation spends-----weighted, the milliseconds spent on I/O operations, and the domain increases at the beginning of each I/O, I/O, and I/O merges. This can provide a convenient measurement standard for I/O completion time and storage for those that can accumulate.

2, write several monitoring items of agnet key:

Userparameter=custom.vfs.dev.read.ops[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$4} ' # # #读磁盘完成的次数

Userparameter=custom.vfs.dev.read.ms[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$7} ' # # #读花费的毫秒数

Userparameter=custom.vfs.dev.write.ops[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$8} ' # # #写完成的次数

Userparameter=custom.vfs.dev.write.ms[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$11} ' # # #写操作花费的毫秒数

Userparameter=custom.vfs.dev.io.active[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$12} ' # # #当前的IO情况

Userparameter=custom.vfs.dev.io.ms[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$13} ' # # #花在I number of milliseconds on/O operations

Userparameter=custom.vfs.dev.read.sectors[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$6} ' # #读取扇区次数

Userparameter=custom.vfs.dev.write.sectors[*],cat/proc/diskstats | grep $ | head-1 | awk ' {print $$10} ' # #写扇区次数

Zabbix LLD Discovery Disk Monitoring