Install Node Exporter Firewall

node_exporter_firewall.sh

#!/bin/sh

# Function to download and extract cadvisor
install_cadvisor() {
    curl -sLo /bin/node-exporter https://github.com/google/cadvisor/releases/download/v0.52.1/cadvisor-v0.52.1-linux-amd64
    chmod +x /bin/node-exporter
}

# Function to create systemd service for cadvisor
create_systemd_service() {
    cat <<EOF > /etc/systemd/system/cadvisor.service
[Unit]
Description=Prometheus Node Exporter
After=network.target

[Service]
ExecStart=/bin/node-exporter
Restart=always

[Install]
WantedBy=multi-user.target
EOF
}

# Function to enable and start the service
start_service() {
    systemctl daemon-reload
    systemctl enable cadvisor --now
}

# Main function that calls other functions
main() {
    install_cadvisor
    create_systemd_service
    start_service
}

# Run the main function
main