Promtheus实战系列（一）之环境部署与搭建

一、部署prometheus,grafana和node_exporter

Prometheus开始教程：https://github.com/Alrights/prometheus/blob/master/introductions/FirstSteps.md

1.1 环境(centos7)

[root@localhost prometheus]# uname -a
Linux localhost.localdomain 3.10.0-957.10.1.el7.x86_64 #1 SMP Mon Mar 18 15:06:45 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

1.2 环境部署与服务启动

// 安装prometheus
wget  https://github.com/prometheus/prometheus/releases/download/v2.9.2/prometheus-2.9.2.linux-amd64.tar.gz
tar xzvf prometheus-2.9.2.linux-amd64.tar.gz
mv prometheus-2.9.2.linux-amd64 /usr/local/prometheus

// 添加prometheus用户，非必须
groupadd prometheus
useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus

对systemctl不熟的可以了解鸟哥的Linux私房菜

// prometheus系统服务配置
vim /etc/systemd/system/prometheus.service

[Unit]
Description=prometheus
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/prometheus/prometheus -config.file=/usr/local/prometheus/prometheus.yml -storage.local.path=/var/lib/prometheus
Restart=on-failure
[Install]
WantedBy=multi-user.target

// 启动prometheus
systemctl start prometheus
systemctl status prometheus

systemctl_prometheus.png

2. node_exporter setup

// 安装node_exporter
wget https://github.com/prometheus/node_exporter/releases/download/v0.18.0/node_exporter-0.18.0.linux-amd64.tar.gz
tar -zxvf node_exporter-0.18.0.linux-amd64.tar.gz
mv node_exporter-0.18.0.linux-amd64 /usr/local/node_exporter

// 系统服务配置node_exporter
vim /etc/systemd/system/node_exporter.service

[Unit]
Description=node_exporter
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/node_exporter/node_exporter
Restart=on-failure
[Install]
WantedBy=multi-user.target

systemctl start node_exporter
systemctl status node_exporter

systemctl_node_exporter.png

3. add node_exporter to prometheus.yaml

vim  /usr/local/prometheus/prometheus.yml

  - job_name: 'linux'
    static_configs:
      - targets: ['localhost:9100']
        labels:
          instance: node1

systemctl restart prometheus
systemctl status prometheus

4. grafana setup

// 安装grafana
wget https://dl.grafana.com/oss/release/grafana-6.1.6-1.x86_64.rpm 
yum localinstall grafana-6.1.6-1.x86_64.rpm 
// 启动grafana-server
systemctl start grafana-server
systemctl status grafana-server

systemctl_grafana_server.png

二、仪表化

2.1 prometheus

prometheus默认端口为9090，可以在浏览器中输入http://localhost:9090/

prometheus_first_start.png

2.2 granafa

granafa默认端口为3000，可以在浏览器中输入http://localhost:3000/

• granafa首次登录账户名和密码admin/admin，可以修改
• 配置数据源Data sources->Add data source -> Prometheus，输入prometheus数据源的信息，主要是输入name和url
  grafana_prometheus_datasource.png
• 添加DashboardNew Dashboard->Import Dashboard->输入8919，配置数据源为Prometheus，即上一步中的name
  grafana_dashboard_node_exporter.png

• 配置完保存后即可看到逼格非常高的系统主机节点监控信息，包括CPU、IO、网络等信息。

  
  grafana_first_dashboard.png

三、tips

1. iptables(端口不通)

/sbin/iptables -I INPUT -p tcp --dport 9090 -j ACCEPT

2. datetime(设置时区)

timedatectl list-timezones
timedatectl set-timezone Asia/Shanghai

四、链接

Prometheus官网地址：https://prometheus.io/
我的Github：https://github.com/Alrights/prometheus