脚本如下：

#!/bin/bash# Function to install Zabbix Agent 2 on RHEL 6
install_zabbix_rhel6() {# Check if the Zabbix repository is already installedif rpm -q zabbix-release &>/dev/null; thenecho "Zabbix repository is already installed."else# Install Zabbix repositoryrpm -Uvh https://repo.zabbix.com/zabbix/6.0/rhel/6/x86_64/zabbix-release-6.0-4.el6.noarch.rpmif [ $? -eq 0 ]; thenecho "Zabbix repository installed successfully."elseecho "Error installing Zabbix repository. Exiting."exit 1fifi# Check if Zabbix Agent 2 is already installedif rpm -q zabbix-agent2 &>/dev/null; thenecho "Zabbix Agent 2 is already installed."else# Install Zabbix Agent 2yum clean allyum install zabbix-agent2 zabbix-agent2-plugin-* -yif [ $? -eq 0 ]; thenecho "Zabbix Agent 2 installed successfully."elseecho "Error installing Zabbix Agent 2. Exiting."exit 1fifi# Modify Zabbix Agent 2 configurationread -p "Enter the desired hostname for Zabbix Agent: " hostnamesed -i "s/^Server=.*/Server=10.99.50.112/" /etc/zabbix/zabbix_agent2.confsed -i "s/^ServerActive=.*/ServerActive=10.99.50.112/" /etc/zabbix/zabbix_agent2.confsed -i "s/^Hostname=.*/Hostname=$hostname/" /etc/zabbix/zabbix_agent2.conf# Enable and start Zabbix Agent 2service zabbix-agent2 restartchkconfig --level 35 zabbix-agent2 on
}# Function to install Zabbix Agent 2 on RHEL 7
install_zabbix_rhel7() {echo "Installing Zabbix Agent 2 on RHEL 7"# Check if Zabbix repository is already installedif rpm -q zabbix-release &>/dev/null; thenecho "Zabbix repository is already installed."else# Install Zabbix repositoryrpm -Uvh https://repo.zabbix.com/zabbix/6.0/rhel/7/x86_64/zabbix-release-6.0-4.el7.noarch.rpmif [ $? -eq 0 ]; thenecho "Zabbix repository installed successfully."elseecho "Error installing Zabbix repository. Exiting."exit 1fifi# Check if Zabbix Agent 2 is already installedif rpm -q zabbix-agent2 &>/dev/null; thenecho "Zabbix Agent 2 is already installed."else# Install Zabbix Agent 2yum clean allyum install zabbix-agent2 zabbix-agent2-plugin-* -yif [ $? -eq 0 ]; thenecho "Zabbix Agent 2 installed successfully."elseecho "Error installing Zabbix Agent 2. Exiting."exit 1fifi# Modify Zabbix Agent 2 configurationread -p "Enter the desired hostname for Zabbix Agent: " hostnamesed -i "s/^Server=.*/Server=10.99.50.112/" /etc/zabbix/zabbix_agent2.confsed -i "s/^ServerActive=.*/ServerActive=10.99.50.112/" /etc/zabbix/zabbix_agent2.confsed -i "s/^Hostname=.*/Hostname=$hostname/" /etc/zabbix/zabbix_agent2.conf# Enable and start Zabbix Agent 2systemctl enable zabbix-agent2systemctl start zabbix-agent2
}# Function to install Zabbix Agent 2 on RHEL 8
install_zabbix_rhel8() {echo "Installing Zabbix Agent 2 on RHEL 8"# Check if the Zabbix repository is already installedif rpm -q zabbix-release &>/dev/null; thenecho "Zabbix repository is already installed."else# Install Zabbix repositoryrpm -Uvh https://repo.zabbix.com/zabbix/6.0/rhel/8/x86_64/zabbix-release-6.0-4.el8.noarch.rpmif [ $? -eq 0 ]; thenecho "Zabbix repository installed successfully."elseecho "Error installing Zabbix repository. Exiting."exit 1fifi# Check if Zabbix Agent 2 is already installedif rpm -q zabbix-agent2 &>/dev/null; thenecho "Zabbix Agent 2 is already installed."else# Install Zabbix Agent 2dnf clean alldnf install zabbix-agent2 zabbix-agent2-plugin-* -yif [ $? -eq 0 ]; thenecho "Zabbix Agent 2 installed successfully."elseecho "Error installing Zabbix Agent 2. Exiting."exit 1fifi# Modify Zabbix Agent 2 configurationread -p "Enter the desired hostname for Zabbix Agent: " hostnamesed -i "s/^Server=.*/Server=10.99.50.112/" /etc/zabbix/zabbix_agent2.confsed -i "s/^ServerActive=.*/ServerActive=10.99.50.112/" /etc/zabbix/zabbix_agent2.confsed -i "s/^Hostname=.*/Hostname=$hostname/" /etc/zabbix/zabbix_agent2.conf# Enable and start Zabbix Agent 2systemctl enable zabbix-agent2systemctl start zabbix-agent2
}# Install Zabbix repository based on the selected OS version
echo "Select the operating system version:"
options=("RHEL 6" "RHEL 7" "RHEL 8" "Quit")
select opt in "${options[@]}"; docase "$opt" in"RHEL 6")install_zabbix_rhel6break;;"RHEL 7")install_zabbix_rhel7break;;"RHEL 8")install_zabbix_rhel8break;;"Quit")echo "Exiting."exit 0;;*)echo "Invalid option. Please select a valid option.";;esac
done  echo "Zabbix Agent 2 installation and configuration complete."