"zabbix external" packetloss

[frater]

I wrote this little script to be used in the template standalone.
It will give you a value 0~100 (percentages) for the amount of packetloss

# cat /usr/local/sbin/packetloss

#!/bin/bash
PACKETLOSS=`ping -q -c5 -i0.3 -w4 ${1} | grep transmitted | grep -Eo '[0-9%]* packet loss' | tr -cd '0-9'`
[ -z "${PACKETLOSS}" ] && PACKETLOSS=100

echo "${PACKETLOSS}"

ln -s /usr/local/sbin/packetloss /etc/zabbix/externalscripts

• name: Packetloss on $1
• Type: Zabbix External
• Interval: 60
• Key: packetloss[{HOST.CONN1}]
• type: Numeric (unsigned)
• Units: %

Because I'm running 1.9.7 I'm missing the items out of an XML-export...
This is the info you need for the triggers...

<?xml version="1.0" encoding="UTF-8"?>
<zabbix_export version="1.0" date="14.11.11" time="17.35">
  <hosts>
    <host name="Template_Standalone">
      <name>Template_Standalone</name>
      <status>3</status>
      <groups>
        <group>Templates</group>
      </groups>
      <triggers>
        <trigger>
          <description>Site {HOST.CONN} is unreachable (Internet Down)  - {HOSTNAME}</description>
          <type>0</type>
          <expression>{Template_Standalone:icmpping.max(#3)}=0</expression>
          <url></url>
          <status>0</status>
          <priority>4</priority>
          <comments></comments>
        </trigger>
        <trigger>
          <description>Site {HOST.CONN} has minor packetloss ({ITEM.LASTVALUE1})  - {HOSTNAME}</description>
          <type>0</type>
          <expression>{Template_Standalone:packetloss[{HOST.CONN1}].last(0)}&gt;1</expression>
          <url></url>
          <status>0</status>
          <priority>1</priority>
          <comments></comments>
        </trigger>
        <trigger>
          <description>Site {HOST.CONN} has packetloss ({ITEM.LASTVALUE1})  - {HOSTNAME}</description>
          <type>0</type>
          <expression>{Template_Standalone:packetloss[{HOST.CONN1}].last(0)}&gt;8</expression>
          <url></url>
          <status>0</status>
          <priority>2</priority>
          <comments></comments>
        </trigger>
        <trigger>
          <description>Site {HOST.CONN} has severe packetloss ({ITEM.LASTVALUE1})  - {HOSTNAME}</description>
          <type>0</type>
          <expression>{Template_Standalone:packetloss[{HOST.CONN1}].last(0)}&gt;40</expression>
          <url></url>
          <status>0</status>
          <priority>3</priority>
          <comments></comments>
        </trigger>
      </triggers>
      <items/>
      <templates/>
      <screens/>
      <graphs/>
      <macros/>
    </host>
  </hosts>
  <dependencies>
    <dependency description="Template_Standalone:Site {HOST.CONN} has minor packetloss ({ITEM.LASTVALUE1})  - {HOSTNAME}">
      <depends>Template_Standalone:Site {HOST.CONN} is unreachable (Internet Down)  - {HOSTNAME}</depends>
    </dependency>
    <dependency description="Template_Standalone:Site {HOST.CONN} has packetloss ({ITEM.LASTVALUE1})  - {HOSTNAME}">
      <depends>Template_Standalone:Site {HOST.CONN} has severe packetloss ({ITEM.LASTVALUE1})  - {HOSTNAME}</depends>
    </dependency>
    <dependency description="Template_Standalone:Site {HOST.CONN} has severe packetloss ({ITEM.LASTVALUE1})  - {HOSTNAME}">
      <depends>Template_Standalone:Site {HOST.CONN} is unreachable (Internet Down)  - {HOSTNAME}</depends>
    </dependency>
  </dependencies>
</zabbix_export>

[jherazob]

Thanks for this tip, i'm now using a slightly modified version of your script (no parameter? then we're just checking if we have Internet access and ping Google instead) to check for host availability: Last 120 seconds the minimum value for the item (with a check every 30 seconds) has been 100? Fire the trigger. It has reduced both false positives and missed alerts.

Plus of course alerting when the packet loss to a server is getting high, of course

[frater]

The script is intended to run on the Zabbix server and should check the site of your client.to test the speed of the client I'm using a agent test that will do an httping to http://www.google.nl.
This can be done using standard Zabbix functionality.

Search for httpspeed or httping on this forum for an external check.