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Template Module Linux block devices by Zabbix agent active.xml
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<?xml version="1.0" encoding="UTF-8"?>
<zabbix_export>
<version>5.0</version>
<groups>
<group>
<name>Templates/Modules</name>
</group>
</groups>
<templates>
<template>
<template>Template Module Linux block devices by Zabbix agent active</template>
<name>Template Module Linux block devices by Zabbix agent active</name>
<description>Template tooling version used: 0.36</description>
<groups>
<group>
<name>Templates/Modules</name>
</group>
</groups>
<applications>
<application>
<name>Storage</name>
</application>
<application>
<name>Zabbix raw items</name>
</application>
</applications>
<discovery_rules>
<discovery_rule>
<name>Block devices discovery</name>
<type>ZABBIX_ACTIVE</type>
<key>vfs.dev.discovery</key>
<delay>1h</delay>
<filter>
<evaltype>AND</evaltype>
<conditions>
<condition>
<macro>{#DEVTYPE}</macro>
<value>disk</value>
<formulaid>C</formulaid>
</condition>
<condition>
<macro>{#DEVNAME}</macro>
<value>{$VFS.DEV.DEVNAME.MATCHES}</value>
<formulaid>B</formulaid>
</condition>
<condition>
<macro>{#DEVNAME}</macro>
<value>{$VFS.DEV.DEVNAME.NOT_MATCHES}</value>
<operator>NOT_MATCHES_REGEX</operator>
<formulaid>A</formulaid>
</condition>
</conditions>
</filter>
<item_prototypes>
<item_prototype>
<name>{#DEVNAME}: Disk average queue size (avgqu-sz)</name>
<type>DEPENDENT</type>
<key>vfs.dev.queue_size[{#DEVNAME}]</key>
<delay>0</delay>
<history>7d</history>
<value_type>FLOAT</value_type>
<description>Current average disk queue, the number of requests outstanding on the disk at the time the performance data is collected.</description>
<application_prototypes>
<application_prototype>
<name>Disk {#DEVNAME}</name>
</application_prototype>
</application_prototypes>
<preprocessing>
<step>
<type>JSONPATH</type>
<params>$[10]</params>
</step>
<step>
<type>CHANGE_PER_SECOND</type>
<params/>
</step>
<step>
<type>MULTIPLIER</type>
<params>0.001</params>
</step>
</preprocessing>
<master_item>
<key>vfs.file.contents[/sys/block/{#DEVNAME}/stat]</key>
</master_item>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Disk read request avg waiting time (r_await)</name>
<type>CALCULATED</type>
<key>vfs.dev.read.await[{#DEVNAME}]</key>
<history>7d</history>
<value_type>FLOAT</value_type>
<units>!ms</units>
<params>(last("vfs.dev.read.time.rate[{#DEVNAME}]")/(last("vfs.dev.read.rate[{#DEVNAME}]")+(last("vfs.dev.read.rate[{#DEVNAME}]")=0)))*1000*(last("vfs.dev.read.rate[{#DEVNAME}]") > 0)</params>
<description>This formula contains two boolean expressions that evaluates to 1 or 0 in order to set calculated metric to zero and to avoid division by zero exception.</description>
<application_prototypes>
<application_prototype>
<name>Disk {#DEVNAME}</name>
</application_prototype>
</application_prototypes>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Disk read rate</name>
<type>DEPENDENT</type>
<key>vfs.dev.read.rate[{#DEVNAME}]</key>
<delay>0</delay>
<history>7d</history>
<value_type>FLOAT</value_type>
<units>!r/s</units>
<description>r/s. The number (after merges) of read requests completed per second for the device.</description>
<application_prototypes>
<application_prototype>
<name>Disk {#DEVNAME}</name>
</application_prototype>
</application_prototypes>
<preprocessing>
<step>
<type>JSONPATH</type>
<params>$[0]</params>
</step>
<step>
<type>CHANGE_PER_SECOND</type>
<params/>
</step>
</preprocessing>
<master_item>
<key>vfs.file.contents[/sys/block/{#DEVNAME}/stat]</key>
</master_item>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Disk read time (rate)</name>
<type>DEPENDENT</type>
<key>vfs.dev.read.time.rate[{#DEVNAME}]</key>
<delay>0</delay>
<history>7d</history>
<value_type>FLOAT</value_type>
<description>Rate of total read time counter. Used in r_await calculation</description>
<applications>
<application>
<name>Zabbix raw items</name>
</application>
</applications>
<preprocessing>
<step>
<type>JSONPATH</type>
<params>$[3]</params>
</step>
<step>
<type>CHANGE_PER_SECOND</type>
<params/>
</step>
<step>
<type>MULTIPLIER</type>
<params>0.001</params>
</step>
</preprocessing>
<master_item>
<key>vfs.file.contents[/sys/block/{#DEVNAME}/stat]</key>
</master_item>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Disk utilization</name>
<type>DEPENDENT</type>
<key>vfs.dev.util[{#DEVNAME}]</key>
<delay>0</delay>
<history>7d</history>
<value_type>FLOAT</value_type>
<units>%</units>
<description>This item is the percentage of elapsed time that the selected disk drive was busy servicing read or writes requests.</description>
<application_prototypes>
<application_prototype>
<name>Disk {#DEVNAME}</name>
</application_prototype>
</application_prototypes>
<preprocessing>
<step>
<type>JSONPATH</type>
<params>$[9]</params>
</step>
<step>
<type>CHANGE_PER_SECOND</type>
<params/>
</step>
<step>
<type>MULTIPLIER</type>
<params>0.1</params>
</step>
</preprocessing>
<master_item>
<key>vfs.file.contents[/sys/block/{#DEVNAME}/stat]</key>
</master_item>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Disk write request avg waiting time (w_await)</name>
<type>CALCULATED</type>
<key>vfs.dev.write.await[{#DEVNAME}]</key>
<history>7d</history>
<value_type>FLOAT</value_type>
<units>!ms</units>
<params>(last("vfs.dev.write.time.rate[{#DEVNAME}]")/(last("vfs.dev.write.rate[{#DEVNAME}]")+(last("vfs.dev.write.rate[{#DEVNAME}]")=0)))*1000*(last("vfs.dev.write.rate[{#DEVNAME}]") > 0)</params>
<description>This formula contains two boolean expressions that evaluates to 1 or 0 in order to set calculated metric to zero and to avoid division by zero exception.</description>
<application_prototypes>
<application_prototype>
<name>Disk {#DEVNAME}</name>
</application_prototype>
</application_prototypes>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Disk write rate</name>
<type>DEPENDENT</type>
<key>vfs.dev.write.rate[{#DEVNAME}]</key>
<delay>0</delay>
<history>7d</history>
<value_type>FLOAT</value_type>
<units>!w/s</units>
<description>w/s. The number (after merges) of write requests completed per second for the device.</description>
<application_prototypes>
<application_prototype>
<name>Disk {#DEVNAME}</name>
</application_prototype>
</application_prototypes>
<preprocessing>
<step>
<type>JSONPATH</type>
<params>$[4]</params>
</step>
<step>
<type>CHANGE_PER_SECOND</type>
<params/>
</step>
</preprocessing>
<master_item>
<key>vfs.file.contents[/sys/block/{#DEVNAME}/stat]</key>
</master_item>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Disk write time (rate)</name>
<type>DEPENDENT</type>
<key>vfs.dev.write.time.rate[{#DEVNAME}]</key>
<delay>0</delay>
<history>7d</history>
<value_type>FLOAT</value_type>
<description>Rate of total write time counter. Used in w_await calculation</description>
<applications>
<application>
<name>Zabbix raw items</name>
</application>
</applications>
<preprocessing>
<step>
<type>JSONPATH</type>
<params>$[7]</params>
</step>
<step>
<type>CHANGE_PER_SECOND</type>
<params/>
</step>
<step>
<type>MULTIPLIER</type>
<params>0.001</params>
</step>
</preprocessing>
<master_item>
<key>vfs.file.contents[/sys/block/{#DEVNAME}/stat]</key>
</master_item>
</item_prototype>
<item_prototype>
<name>{#DEVNAME}: Get stats</name>
<type>ZABBIX_ACTIVE</type>
<key>vfs.file.contents[/sys/block/{#DEVNAME}/stat]</key>
<history>0</history>
<trends>0</trends>
<value_type>TEXT</value_type>
<description>Get contents of /sys/block/{#DEVNAME}/stat for disk stats.</description>
<applications>
<application>
<name>Zabbix raw items</name>
</application>
</applications>
<preprocessing>
<step>
<type>JAVASCRIPT</type>
<params>return JSON.stringify(value.trim().split(/ +/));</params>
</step>
</preprocessing>
</item_prototype>
</item_prototypes>
<trigger_prototypes>
<trigger_prototype>
<expression>{Template Module Linux block devices by Zabbix agent active:vfs.dev.read.await[{#DEVNAME}].min(15m)} > {$VFS.DEV.READ.AWAIT.WARN:"{#DEVNAME}"} or {Template Module Linux block devices by Zabbix agent active:vfs.dev.write.await[{#DEVNAME}].min(15m)} > {$VFS.DEV.WRITE.AWAIT.WARN:"{#DEVNAME}"}</expression>
<name>{#DEVNAME}: Disk read/write request responses are too high (read > {$VFS.DEV.READ.AWAIT.WARN:"{#DEVNAME}"} ms for 15m or write > {$VFS.DEV.WRITE.AWAIT.WARN:"{#DEVNAME}"} ms for 15m)</name>
<priority>WARNING</priority>
<description>This trigger might indicate disk {#DEVNAME} saturation.</description>
<manual_close>YES</manual_close>
</trigger_prototype>
</trigger_prototypes>
<graph_prototypes>
<graph_prototype>
<name>{#DEVNAME}: Disk average waiting time</name>
<graph_items>
<graph_item>
<color>1A7C11</color>
<item>
<host>Template Module Linux block devices by Zabbix agent active</host>
<key>vfs.dev.read.await[{#DEVNAME}]</key>
</item>
</graph_item>
<graph_item>
<sortorder>1</sortorder>
<drawtype>GRADIENT_LINE</drawtype>
<color>2774A4</color>
<item>
<host>Template Module Linux block devices by Zabbix agent active</host>
<key>vfs.dev.write.await[{#DEVNAME}]</key>
</item>
</graph_item>
</graph_items>
</graph_prototype>
<graph_prototype>
<name>{#DEVNAME}: Disk read/write rates</name>
<graph_items>
<graph_item>
<color>1A7C11</color>
<item>
<host>Template Module Linux block devices by Zabbix agent active</host>
<key>vfs.dev.read.rate[{#DEVNAME}]</key>
</item>
</graph_item>
<graph_item>
<sortorder>1</sortorder>
<drawtype>GRADIENT_LINE</drawtype>
<color>2774A4</color>
<item>
<host>Template Module Linux block devices by Zabbix agent active</host>
<key>vfs.dev.write.rate[{#DEVNAME}]</key>
</item>
</graph_item>
</graph_items>
</graph_prototype>
<graph_prototype>
<name>{#DEVNAME}: Disk utilization and queue</name>
<graph_items>
<graph_item>
<color>1A7C11</color>
<yaxisside>RIGHT</yaxisside>
<item>
<host>Template Module Linux block devices by Zabbix agent active</host>
<key>vfs.dev.queue_size[{#DEVNAME}]</key>
</item>
</graph_item>
<graph_item>
<sortorder>1</sortorder>
<drawtype>GRADIENT_LINE</drawtype>
<color>2774A4</color>
<item>
<host>Template Module Linux block devices by Zabbix agent active</host>
<key>vfs.dev.util[{#DEVNAME}]</key>
</item>
</graph_item>
</graph_items>
</graph_prototype>
</graph_prototypes>
<preprocessing>
<step>
<type>DISCARD_UNCHANGED_HEARTBEAT</type>
<params>1h</params>
</step>
</preprocessing>
</discovery_rule>
</discovery_rules>
<macros>
<macro>
<macro>{$VFS.DEV.DEVNAME.MATCHES}</macro>
<value>.+</value>
<description>This macro is used in block devices discovery. Can be overridden on the host or linked template level</description>
</macro>
<macro>
<macro>{$VFS.DEV.DEVNAME.NOT_MATCHES}</macro>
<value>^(loop[0-9]*|sd[a-z][0-9]+|nbd[0-9]+|sr[0-9]+|fd[0-9]+|dm-[0-9]+|ram[0-9]+|ploop[a-z0-9]+|md[0-9]*|hcp[0-9]*|zram[0-9]*)</value>
<description>This macro is used in block devices discovery. Can be overridden on the host or linked template level</description>
</macro>
<macro>
<macro>{$VFS.DEV.READ.AWAIT.WARN}</macro>
<value>20</value>
<description>Disk read average response time (in ms) before the trigger would fire</description>
</macro>
<macro>
<macro>{$VFS.DEV.WRITE.AWAIT.WARN}</macro>
<value>20</value>
<description>Disk write average response time (in ms) before the trigger would fire</description>
</macro>
</macros>
</template>
</templates>
</zabbix_export>