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h1. Zabbix Agent Config

h2. Userparameter

h3. Preliminary Note

Basically there is 2 ways to go the road. As the @Agentd@ is run with the @zabbix@ user 

* you will have to give zabbix sudo-rights for the programs needed

* prepare via cron-jobs data for extraction which are accessible by the zabbix-user

Both solutions have their shortcomings:

* SUDO-Version

** giving sudo-rights to zabbix might be considered a security risk

** flooding logs with sudo-messages

** you have to remove @requiretty@ to make sudo work with zabbix

* CRON-Version

** if you cron-job doesn't deliver data, zabbix will reread old data over and over

** the setup is more complex and not straight forward when it comes to debugging

h3. Sample UserParameter-List

<pre bash zabbix-agentd.conf>

#UserParameter=ipmi.temp.ambient,sudo ipmitool sdr type "Temperature" |grep Ambient |sed -e 's/.* | \([0-9]\+\).*/\1/'

#UserParameter=ipmi.fan.1,sudo ipmitool sdr | grep FAN1 |sed -e 's/.* | \([0-9]\+\).*/\1/'

#UserParameter=ipmi.fan.2,sudo ipmitool sdr | grep FAN2 |sed -e 's/.* | \([0-9]\+\).*/\1/'

#UserParameter=ipmi.fan.3,sudo ipmitool sdr | grep FAN3 |sed -e 's/.* | \([0-9]\+\).*/\1/'

#UserParameter=ipmi.fan.4,sudo ipmitool sdr | grep FAN4 |sed -e 's/.* | \([0-9]\+\).*/\1/'

UserParameter=system.smartd[*],cat /var/cache/myzabbix/smart.$1.status| grep $2| tail -1| cut -c 88-|cut -f1 -d' '

UserParameter=system.smartd.value[*],cat /var/cache/myzabbix/smart.$1.status| grep $2| tail -1| cut -c 38-|cut -f1 -d' '

UserParameter=system.smartd.worst[*],cat /var/cache/myzabbix/smart.$1.status| grep $2| tail -1| cut -c 44-|cut -f1 -d' '

UserParameter=system.smartd.thres[*],cat /var/cache/myzabbix/smart.$1.status| grep $2| tail -1| cut -c 50-|cut -f1 -d' '

#UserParameter=system.apcups[*],cat /var/cache/myzabbix/apcups.status| grep $1| tail -1|cut -c 12-|sed 's/^[ ]*//'|cut -f1 -d' '

</pre>

h3. Sudo-Version

<pre><code class="bash">

visudo

</code></pre>

<pre>

...

#

# Disable "ssh hostname sudo <cmd>", because it will show the password in clear. 

#         You have to run "ssh -t hostname sudo <cmd>".

#

#JKE 2012-09-20 commented out to make zabbix-sudo work

#Defaults    requiretty

...

...

## Read drop-in files from /etc/sudoers.d (the # here does not mean a comment)

#includedir /etc/sudoers.d

</pre>

<pre><code class="bash">

visudo -f /etc/sudoers.d/zabbix

</code></pre>

<pre bash zabbix>

zabbix ALL = (ALL) NOPASSWD:/usr/bin/ipmitool

zabbix ALL = (ALL) NOPASSWD:/usr/sbin/smartctl

</pre>

h3. Cron-Version

create zabbix-data exchange-directory

<pre><code class="bash">

mkdir /var/cache/myzabbix

</code></pre>

create zabbix-data-file

<pre><code class="bash">

vim /usr/local/bin/smart_status.sh

</code></pre>

<pre bash smart_status.sh>

/usr/sbin/smartctl -A /dev/sda > /var/cache/myzabbix/smart.sda.status

/usr/sbin/smartctl -A /dev/sdb > /var/cache/myzabbix/smart.sdb.status

</pre>

<pre bash smart_status_megaraid.sh>

/usr/sbin/smartctl -d sat+megaraid,10 -a /dev/sda > /var/cache/myzabbix/smart.sda.0.status

/usr/sbin/smartctl -d sat+megaraid,11 -a /dev/sda > /var/cache/myzabbix/smart.sda.1.status

/usr/sbin/smartctl -d sat+megaraid,12 -a /dev/sdb > /var/cache/myzabbix/smart.sdb.0.status

/usr/sbin/smartctl -d sat+megaraid,13 -a /dev/sdc > /var/cache/myzabbix/smart.sdc.0.status

/usr/sbin/smartctl -d sat+megaraid,14 -a /dev/sdc > /var/cache/myzabbix/smart.sdc.1.status

</pre>

<pre><code class="bash">

vim /usr/local/bin/apcups_status.sh

</code></pre>

<pre bash apcups_status.sh>

/etc/init.d/apcupsd status > /var/cache/myzabbix/apcups.status

</pre>

create cron-job

<pre><code class="bash">

vim /etc/cron.d/zabbix

</code></pre>

<pre>

# JKE 2012-10-19

#

# minute hour day month dayofweek

# m h d m d

# - - - - -

# | | | | |

# | | | | +-day of week (0-7) sunday=0 or 7

# | | | +---month (1-12)

# | | +-----day of month (1-31)

# | +-------hour (0-23)

# +---------min (0-59)

# 

#	*/2	*	*	*	*	root	/usr/local/bin/apcups_status.sh

	*/5	*	*	*	*	root	/usr/local/bin/smart_status.sh

	5	1	*	*	*	root	/usr/local/bin/zabbix-mysql-backupconf.sh

</pre>