Worklet: Install Zabbix Agent on Linux

Checks to see if Zabbix is installed and if not, installs it. Covers Centos and Ubuntu, but can be extended for other Linux flavors fairly easily.

Evaluation code:

#!/bin/bash

service=zabbix_agent



if (( $(ps -ef | grep -v grep | grep $service | wc -l) > 0 ))

then

exit 0

else

exit 1

fi

Remediation code:

#!/bin/bash



#Get OS

os_id="$(grep -w ID /etc/os-release | cut -d'=' -f2)"



#Functions

centos () {

	if [ $os_ver == '8.0' ]; then

    	#Remove all dirty packages

    	rpm -e zabbix-release-*

        

		#Get the Package

		rpm -Uvh http://repo.zabbix.com/zabbix/4.0/rhel/8/x86_64/zabbix-release-4.0-2.el8.noarch.rpm

		

		#Clean and Install with Yum

        yum clean all

		yum -y install zabbix-agent



		#Overwrite the conf file with attached

		cp zabbix_agentd.conf /etc/zabbix/zabbix_agentd.conf

		

		#Edit config to personalize for new system

		CONFIGPATH="/etc/zabbix/zabbix_agentd.conf"

		TARGET_KEY="Hostname"

		REPLACEMENT_VALUE="$(hostname)"

		sed -c -i "s/\($TARGET_KEY *= *\).*/\1$REPLACEMENT_VALUE/" $CONFIGPATH



		#Enable Zabbix as Service (Automatic Startup at Boot)

		systemctl enable zabbix-agent



		#Start the agent

		systemctl start zabbix-agent

        

    fi



	if [ $os_ver == '7' ]; then

    	#Remove all dirty packages

    	rpm -e zabbix-release-*

        

		#Get the Package

		rpm -Uvh http://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm

		

		#Clean and install with Yum

        yum clean all

		yum -y install zabbix-agent



		#Overwrite the conf file with attached

		cp zabbix_agentd.conf /etc/zabbix/zabbix_agentd.conf

		

		#Edit config to personalize for new system

		CONFIGPATH="/etc/zabbix/zabbix_agentd.conf"

		TARGET_KEY="Hostname"

		REPLACEMENT_VALUE="$(hostname)"

		sed -c -i "s/\($TARGET_KEY *= *\).*/\1$REPLACEMENT_VALUE/" $CONFIGPATH



		#Enable Zabbix as Service (Automatic Startup at Boot)

		systemctl enable zabbix-agent



		#Start the agent

		systemctl start zabbix-agent

        

    fi

	

	if [ $os_ver == '6' ]; then

    	#Remove all dirty packages

	    rpm -e zabbix-release-*

    

		#Get the Package

        wget https://repo.zabbix.com/zabbix/4.0/rhel/6/x86_64/zabbix-release-4.0-2.el6.noarch.rpm

		rpm -Uvh zabbix-release-4.0-2.el6.noarch.rpm

		

		#Clean and install with Yum

        yum clean all

		yum -y install zabbix-agent

		

		#Overwrite the conf file with attached

		cp zabbix_agentd.conf /etc/zabbix/zabbix_agentd.conf

		

		#Edit config to personalize for new system

		CONFIGPATH="/etc/zabbix/zabbix_agentd.conf"

		TARGET_KEY="Hostname"

		REPLACEMENT_VALUE="$(hostname)"

		sed -c -i "s/\($TARGET_KEY *= *\).*/\1$REPLACEMENT_VALUE/" $CONFIGPATH

		

		#Enable Zabbix as Service (Automatic Startup at Boot)

		service zabbix-agent enable

		

		#Start the agent

		service zabbix-agent start

		

	fi

}



ubuntu () {

	#Get the Package

	#wget https://repo.zabbix.com/zabbix/4.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_4.0-3+bionic_all.deb

	#dpkg -i zabbix-release_4.0-3+bionic_all.deb



	#Install with apt

	apt-get update

	apt-get -y install zabbix-agent



	#Overwrite the conf file with attached

	cp zabbix_agentd.conf /etc/zabbix/zabbix_agentd.conf

	

	#Edit config to personalize for new systemctl

	CONFIGPATH="/etc/zabbix/zabbix_agentd.conf"

	TARGET_KEY="Hostname"

	REPLACEMENT_VALUE="$(hostname)"

	sed -i "s/\($TARGET_KEY *= *\).*/\1$REPLACEMENT_VALUE/" $CONFIGPATH

	

	#Restart Zabbix Agent

	service zabbix-agent restart

}



#Find OS and Forward to Appropriate Function

if (os_id == "ubuntu")

	then

		ubuntu

	else

    	os_ver="$(rpm -q centos-release | cut -d'-' -f3)"

		centos

fi



exit 0

Note for the Ubuntu section, the wget is commented out. If the Zabbix package isn’t already in your Ubuntu install, then uncomment that line.