zabbix监控linux磁盘性能

perl和python，以及zabbix-agent已是可用状态。

1：每秒IO数，即iops或tps
2：吞吐率
3：平均IO尺寸，avgrq-sz
4：IO等待队列长度,avgqu-sz
5：磁盘活动时间百分比,util

yum install sysstat -y    #centos7安装iostat工具,centos6之前自带

mkdir /usr/lib/zabbix/alertscripts/ -p
chown zabbix:zabbix /usr/lib/zabbix/ -R

cd /usr/lib/zabbix/alertscripts/
vim discover_disk.pl

#!/usr/bin/perl
# give disk dmname, returns Proxmox VM name
sub get_vmname_by_id
  {
  $vmname=`cat /etc/qemu-server/$_[0].conf | grep name | cut -d /: -f 2`;
  $vmname =~ s/^/s+//; #remove leading spaces
  $vmname =~ s//s+$//; #remove trailing spaces
  return $vmname
  }
$first = 1;
print "{/n";
print "/t/"data/":[/n/n";

for (`cat /proc/diskstats`)
  {
  ($major,$minor,$disk) = m/^/s*([0-9]+)/s+([0-9]+)/s+(/S+)/s.*$/;
  $dmnamefile = "/sys/dev/block/$major:$minor/dm/name";
  $vmid= "";
  $vmname = "";
  $dmname = $disk;
  $diskdev = "/dev/$disk";
  # DM name
  if (-e $dmnamefile) {
    $dmname = `cat $dmnamefile`;
    $dmname =~ s//n$//; #remove trailing /n
    $diskdev = "/dev/mapper/$dmname";
    # VM name and ID
    if ($dmname =~ m/^.*--([0-9]+)--.*$/) {
      $vmid = $1;
      #$vmname = get_vmname_by_id($vmid);
      }
    }
  #print("$major $minor $disk $diskdev $dmname $vmid $vmname /n");

  print "/t,/n" if not $first;
  $first = 0;

  print "/t{/n";
  print "/t/t/"{#DISK}/":/"$disk/",/n";
  print "/t/t/"{#DMNAME}/":/"$dmname/",/n";
  print "/t/t/"{#VMNAME}/":/"$vmname/",/n";
  print "/t/t/"{#VMID}/":/"$vmid/"/n";
  print "/t}/n";
  }

print "/n/t]/n";
print "}/n";

vim zbx_parse_iostat_values.sh

#!/bin/bash
dev=$1
type=$2

#enable debug mode
debug=0

if [[ -z "$dev" ]]; then
  echo "error: wrong input value (device)"
  exit 1
fi

if [[ -z "$type" ]]; then
  echo "error: wrong input value (type)"
  exit 1
fi

columns=`iostat -xN |egrep -o "^Device.*"`

columnsarray=($columns)

column_id=1

for i in "${columnsarray[@]}"
do
        #echo "column: $i"

        if [[ "$i" = "$type" ]]; then

            if [[ $debug -eq 1 ]]; then
                echo "right column (${i}) found...column_id: $column_id "
            fi

            id="$"
            column_id_id=$id$column_id

            iostats=`iostat -xN |egrep -o "^${dev}[[:space:]]+.*" |awk "{print ${column_id_id}}"`
        fi
    column_id=$[column_id + 1]
done

if [ -z "$iostats" ]; then
    echo "error: /"device/" or /"type/" not found (${dev},${type})"
    exit 3
fi

iostats_lines=`wc -l < << "$iostats"`

if [ $iostats_lines -ne 1 ]; then
    echo "error: wrong output value (${iostats_lines})"
    exit 2
fi

echo $iostats

if [[ $debug -eq 1 ]]; then
    echo "- - - - - - - - - -"
    echo $columns
    iostats_debug=`iostat -xN |egrep -o "^${dev}[[:space:]]+.*"`
    echo $iostats_debug
    echo "- - - - - - - - - -"
fi

exit 0

chmod +x /usr/lib/zabbix/alertscripts/*

vim /etc/zabbix/zabbix_agentd.conf
# diskio discovery
UserParameter=discovery.disks.iostats,/usr/lib/zabbix/alertscripts/discover_disk.pl
UserParameter=custom.vfs.dev.iostats.rrqm[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "rrqm/s"
UserParameter=custom.vfs.dev.iostats.wrqm[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "wrqm/s"
UserParameter=custom.vfs.dev.iostats.rps[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "r/s"
UserParameter=custom.vfs.dev.iostats.wps[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "w/s"
UserParameter=custom.vfs.dev.iostats.avgrq[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "avgrq-sz"
UserParameter=custom.vfs.dev.iostats.avgqu[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "avgqu-sz"
UserParameter=custom.vfs.dev.iostats.await[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "await"
UserParameter=custom.vfs.dev.iostats.svctm[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "svctm"
UserParameter=custom.vfs.dev.iostats.util[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "%util"
UserParameter=custom.vfs.dev.iostats.rkB[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "rkB/s"
UserParameter=custom.vfs.dev.iostats.wkB[*],/usr/lib/zabbix/alertscripts/zbx_parse_iostat_values.sh $1 "wkB/s"

systemctl restart zabbix-agent.service

wget https://qiniu.wsfnk.com/Template_Linux_Disk_IO_Stats.xml

#这里的名称一定要是它，建议复制粘贴 "Linux disks for autodiscovery"