Worklet: Install Zabbix Agent on Linux

#!/bin/bash
service=zabbix_agent

if (( $(ps -ef | grep -v grep | grep $service | wc -l) > 0 ))
then
exit 0
else
exit 1
fi

#!/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