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#!/bin/bash
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##### name:一键安装node-exporter节点 #####
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##### authro:xiaoz<xiaoz93@outlook.com> #####
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##### update:2021/12/09 #####
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#获取action
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ACTION=$1
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#获取版本号
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VERSION=$2
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#instance名称
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#INSTANCE=$2
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#用户名、密码
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#USERNAME_PASSWORD=$3
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#安装目录
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INSTALL_PATH="/opt/node_exporter"
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#安装前准备
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depend(){
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echo "Pre-installation preparation is in progress..."
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if [ -e "/usr/bin/yum" ]
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then
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yum -y install wget curl
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else
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#更新软件，否则可能make命令无法安装
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apt-get -y update
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apt-get install -y wget curl
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fi
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#获取机器IP
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myip=$(curl ipv4.ip.sb)
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#获取INSTANCE名称，如果为空，则获取hostname
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if [[ "$INSTANCE" == "" ]]
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then
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INSTANCE=$(echo $HOSTNAME)_${myip}
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else
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INSTANCE=${HOSTNAME}_${myip}
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fi
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}
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#下载
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download(){
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echo "Ready to download the installation package..."
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wget -P /opt http://soft.xiaoz.org/linux/node_exporter-${VERSION}.linux-amd64.tar.gz
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cd /opt && tar -xvf node_exporter-${VERSION}.linux-amd64.tar.gz
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mv node_exporter-${VERSION}.linux-amd64 node_exporter
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}
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#一些额外的配置
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setting(){
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#设置密码访问
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cat >> $INSTALL_PATH/config.yaml << EOF
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basic_auth_users:
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$USERNAME_PASSWORD
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EOF
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}
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#放行端口
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release_port(){
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echo "Detecting firewall type..."
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#检测防火墙类型
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which firewall-cmd
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if [ $? -eq 0 ]
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then
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firewall_status=$(firewall-cmd --state)
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if [[ "firewall_status" == "running" ]]
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then
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firewall-cmd --zone=public --add-port=29100/tcp --permanent
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firewall-cmd --reload
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fi
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fi
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which ufw
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if [ $? -eq 0 ]
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then
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ufw allow 29100/tcp
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fi
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}
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#注册服务并启动
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reg_systemd(){
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echo "Registering service..."
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echo "[Unit]
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Description=Node Exporter
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Wants=network-online.target
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After=network-online.target
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[Service]
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ExecStart=${INSTALL_PATH}/node_exporter --web.listen-address=":29100" --web.config=${INSTALL_PATH}/config.yaml
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[Install]
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WantedBy=default.target" > /etc/systemd/system/node_exporter.service
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#重载服务
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systemctl daemon-reload
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#启动服务
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systemctl start node_exporter.service
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#设置开机自启
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systemctl enable node_exporter.service
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}
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#安装完成
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install_success(){
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echo "----------------------------"
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#推送数据到普罗米修斯以自动注册
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curl -u 'xiaoz:HAKrmCM6' -X POST -d "instance=${INSTANCE}" https://prometheus.rss.ink/api/v1/push_data
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echo "Installation is complete, please visit http://${myip}:29100"
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}
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#清理工作
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clean_work() {
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echo "Cleaning installation packages..."
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rm -rf /opt/node_exporter-${VERSION}.linux-amd64.tar.gz
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}
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#卸载node_exporter
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uninstall(){
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#停止服务
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systemctl stop node_exporter
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systemctl disable node_exporter
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#删除服务
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rm -rf /etc/systemd/system/node_exporter.service
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systemctl daemon-reload
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#删除安装目录
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rm -rf ${INSTALL_PATH}
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}
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#根据参数一判断执行动作
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case $ACTION in
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"install")
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depend && download && setting && release_port && reg_systemd && clean_work && install_success
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;;
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"uninstall")
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uninstall
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;;
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*)
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echo "Parameter error!"
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;;
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esac
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