blockpi_monitoring.sh

#!/bin/bash

function checkPorts {
	echo -e '\n\e[42mCheck Ports\e[0m\n'
	if ss -tulpen | awk '{print $5}' | grep -q ":3000$" ; then
		echo -e "\e[31mInstallation is not possible, port 3000 already in use.\e[39m"
		exit
	else
		echo "Port 3000 is OK"
	fi
	if ss -tulpen | awk '{print $5}' | grep -q ":9100$" ; then
		echo -e "\e[31mInstallation is not possible, port 9090 already in use.\e[39m"
		exit
	else
		echo "Port 9100 is OK"
	fi
	if ss -tulpen | awk '{print $5}' | grep -q ":9090$" ; then
		echo -e "\e[31mInstallation is not possible, port 9090 already in use.\e[39m"
		exit
	else
		echo "9090"
	fi
}

function installNodeExporter {
	echo -e '\n\e[42mInstalling Node Exporter\e[0m\n'
	mkdir -p /opt/node_exporter
	cd /opt/node_exporter
	version=`wget -qO- -t1 -T2 "https://api.github.com/repos/prometheus/node_exporter/releases/latest" | grep "tag_name" | head -n 1 | awk -F ":" '{print $2}' | sed 's/\"//g;s/,//g;s/ //g'`
	wget  https://github.com/prometheus/node_exporter/releases/download/${version}/node_exporter-${version:1}.linux-amd64.tar.gz
	tar xvfz node_exporter-*.*-amd64.tar.gz && cp node_exporter-*.*-amd64/node_exporter . && chown $USER:$USER node_exporter

	echo "[Unit]
	Description=Node Exporter
	After=network.target
	StartLimitIntervalSec=0
	[Service]
	Type=simple
	Restart=always
	RestartSec=1
	User=$USER
	ExecStart=/opt/node_exporter/node_exporter
	[Install]
	WantedBy=multi-user.target" > /etc/systemd/system/node_exporter.service
	sudo systemctl enable --now node_exporter
	sleep 2
	curl http://localhost:9100/metrics	
}

function installPrometheus {
	echo -e '\n\e[42mInstalling Prometheus\e[0m\n'
	mkdir -p /opt/prometheus
	cd /opt/prometheus
	
	echo -e "
scrape_configs:
  - job_name: 'prometheus'
    static_configs:
      - targets: ['localhost:9090']
  - job_name: 'hyper-node-server'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9100']
  - job_name: 'hyper-node'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:8899']
  - job_name: 'klaytn'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:31275']" > prometheus.yml
	
	version=`wget -qO- -t1 -T2 "https://api.github.com/repos/prometheus/prometheus/releases/latest" | grep "tag_name" | head -n 1 | awk -F ":" '{print $2}' | sed 's/\"//g;s/,//g;s/ //g'`
	wget  https://github.com/prometheus/prometheus/releases/download/${version}/prometheus-${version:1}.linux-amd64.tar.gz
	tar xvfz prometheus-*.*-amd64.tar.gz && cp prometheus-*.*-amd64/prometheus . && chown $USER:$USER prometheus

	echo "[Unit]
	Description=Prometheus
	After=network.target
	StartLimitIntervalSec=0
	[Service]
	Type=simple
	Restart=always
	RestartSec=1
	User=$USER
	ExecStart=/opt/prometheus/prometheus --config.file=/opt/prometheus/prometheus.yml
	[Install]
	WantedBy=multi-user.target" > /etc/systemd/system/prometheus.service
	sudo systemctl enable --now prometheus
	sleep 2	
}

function installGrafana {
	sudo apt-get install -y gnupg2 curl software-properties-common
	curl https://packages.grafana.com/gpg.key | sudo apt-key add -
	sudo add-apt-repository "deb https://packages.grafana.com/oss/deb stable main"
	sudo apt-get update
	sudo apt-get -y install grafana
	
	#mkdir -p /etc/grafana/provisioning/datasources/
	echo "
apiVersion: 1
datasources:
    - access: proxy
      editable: true
      name: prometheus
      orgId: 1
      type: prometheus
      url: http://localhost:9090/
      version: 1" > /etc/grafana/provisioning/datasources/prometheus.yml
 	
	#mkdir -p /etc/grafana/provisioning/dashboards/
	cd /etc/grafana/provisioning/dashboards/
	wget https://github.com/davaymne/blockpi-testnet-monitoring/blob/main/grafana/provisioning/dashboards/dashboard.json
	sudo systemctl enable --now grafana-server
}

# Main
bash_profile=$HOME/.bash_profile
if [ -f "$bash_profile" ]; then
    . $HOME/.bash_profile
fi

sleep 1 && wget -q -O davaymne_logo.sh https://gist.githubusercontent.com/davaymne/1361bc2ea24a9f5b8ab7585691e388e5/raw/14cce7b8c0f34302f856c0c7eda22651c37de64c/davaymne_logo.sh && chmod 777 davaymne_logo.sh && sudo /bin/bash davaymne_logo.sh && sleep 1

apt update && apt upgrade -y
apt install htop git httpie jq tmux bc net-tools smartmontools  -y

checkPorts
installNodeExporter
installPrometheus
installGrafana