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node_exporter.sh

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+#!/bin/bash
+#####	name:一键安装node-exporter节点		#####
+#####	authro:xiaoz<xiaoz93@outlook.com>	#####
+#####	update:2021/12/09					#####
+
+#获取action
+ACTION=$1
+#获取版本号
+VERSION=$2
+#instance名称
+#INSTANCE=$2
+#用户名、密码
+#USERNAME_PASSWORD=$3
+#安装目录
+INSTALL_PATH="/opt/node_exporter"
+
+#安装前准备
+depend(){
+	echo "Pre-installation preparation is in progress..."
+	if [ -e "/usr/bin/yum" ]
+	then
+		yum -y install wget curl
+	else
+		#更新软件，否则可能make命令无法安装
+		apt-get -y update
+		apt-get install -y wget curl
+	fi
+	#获取机器IP
+	myip=$(curl ipv4.ip.sb)
+	#获取INSTANCE名称，如果为空，则获取hostname
+	if [[ "$INSTANCE" == "" ]]
+	then
+		INSTANCE=$(echo $HOSTNAME)_${myip}
+	else
+		INSTANCE=${INSTANCE}_${myip}
+	fi
+}
+#下载
+download(){
+	#下载之前检查node_exporter是否安装过
+	if [ -f "/opt/node_exporter" ]
+	then
+		echo "node_exporter has been installed."
+		exit
+	fi
+	echo "Ready to download the installation package..."
+	wget -P /opt http://soft.xiaoz.org/linux/node_exporter-${VERSION}.linux-amd64.tar.gz
+	cd /opt && tar -xvf node_exporter-${VERSION}.linux-amd64.tar.gz
+	mv node_exporter-${VERSION}.linux-amd64 node_exporter
+}
+
+#一些额外的配置
+setting(){
+	#设置密码访问
+cat >> $INSTALL_PATH/config.yaml << EOF
+basic_auth_users:
+  $USERNAME_PASSWORD
+EOF
+
+}
+
+#放行端口
+release_port(){
+	echo "Detecting firewall type..."
+	#检测防火墙类型
+	which firewall-cmd
+	if [ $? -eq 0 ]
+	then
+		firewall_status=$(firewall-cmd --state)
+		if [[ "$firewall_status" == "running" ]]
+		then
+			firewall-cmd --zone=public --add-port=29100/tcp --permanent
+			firewall-cmd --reload
+		fi
+	fi
+	which ufw
+	if [ $? -eq 0 ]
+	then
+		ufw allow 29100/tcp
+	fi
+}
+
+
+#注册服务并启动
+reg_systemd(){
+	echo "Registering service..."
+echo "[Unit]
+Description=Node Exporter
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+ExecStart=${INSTALL_PATH}/node_exporter --web.listen-address=":29100" --web.config=${INSTALL_PATH}/config.yaml
+
+[Install]
+WantedBy=default.target" > /etc/systemd/system/node_exporter.service
+	#重载服务
+	systemctl daemon-reload
+	#启动服务
+	systemctl start node_exporter.service
+	#设置开机自启
+	systemctl enable node_exporter.service
+}
+
+#安装完成
+install_success(){
+	echo "----------------------------"
+	#推送数据到普罗米修斯以自动注册
+	curl -u "${API_USER_PASS}" -X POST -d "instance=${INSTANCE}" https://prometheus.rss.ink/api/v1/push_data
+	echo "Installation is complete, please visit http://${myip}:29100"
+}
+
+#清理工作
+clean_work() {
+	echo "Cleaning installation packages..."
+	rm -rf /opt/node_exporter-${VERSION}.linux-amd64.tar.gz
+}
+
+#卸载node_exporter
+uninstall(){
+	#停止服务
+	systemctl stop node_exporter
+	systemctl disable node_exporter
+	#删除服务
+	rm -rf /etc/systemd/system/node_exporter.service
+	systemctl daemon-reload
+	#删除安装目录
+	rm -rf ${INSTALL_PATH}
+	#请求API移除服务端数据
+	curl -u "${API_USER_PASS}" https://prometheus.rss.ink/api/v1/push_data?type=delete
+	echo "----------------------------"
+	echo "Uninstall completed."
+}
+
+#根据参数一判断执行动作
+case $ACTION in
+"install")
+	depend && download && setting && release_port && reg_systemd && clean_work && install_success
+	;;
+"uninstall")
+	uninstall
+	;;
+*)
+	echo "Parameter error!"
+	;;
+esac
+
+