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](https://links.jianshu.com/go?to=http%3A%2F%2Flinux.vbird.org%2Flinux_basic%2F0560daemons.php%23daemon)

// 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 
```

![](https://img-hello-world.oss-cn-beijing.aliyuncs.com/1724e8f3fe630e5b0eb01c9d31955e3c.png)

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 
```

![](https://img-hello-world.oss-cn-beijing.aliyuncs.com/3ea07e0c25982e1bd7bf180aa2b98753.png)

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


![](https://img-hello-world.oss-cn-beijing.aliyuncs.com/7a65df055e0a6c9b8a20cbe5e65f3945.png)

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/](https://links.jianshu.com/go?to=http%3A%2F%2Flocalhost%3A9090%2F)  

![](https://img-hello-world.oss-cn-beijing.aliyuncs.com/082565e1e0e21fa4d9a5b5dd7dfefac8.png)

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/](https://links.jianshu.com/go?to=http%3A%2F%2Flocalhost%3A3000%2F)

*   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`  

    ![](https://img-hello-world.oss-cn-beijing.aliyuncs.com/be6feb002f5eaec8634945934bc8e1d2.png)

    grafana\_prometheus\_datasource.png

*   添加Dashboard`New Dashboard->Import Dashboard->输入8919`，配置数据源为Prometheus，即上一步中的`name`  

    ![](https://img-hello-world.oss-cn-beijing.aliyuncs.com/e91722b93b249c3abcb4381f62f04bd8.png)

    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。



    ![](https://img-hello-world.oss-cn-beijing.aliyuncs.com/a7a740743d18b92f43025eff67d82a65.png)

    grafana\_first\_dashboard.png


三、tips
------

1.  iptables(端口不通)

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