1.官网下载安装包：


```
[root@host-10-10-2-99 ~]# wget https://github.com/prometheus/prometheus/releases/download/v2.13.1/prometheus-2.13.1.linux-amd64.tar.gz
[root@host-10-10-2-99 ~]# tar -xf prometheus-2.13.1.linux-amd64.tar.gz
[root@host-10-10-2-99 ~]# mv prometheus-2.13.1.linux-amd64 /usr/local/prometheus
[root@host-10-10-2-99 ~]# cd /usr/local/prometheus/

```


2.查看相应版本，解压即可使用：


```
[root@host-10-10-2-99 prometheus]# ./prometheus --version
prometheus, version 2.13.1 (branch: HEAD, revision: 6f92ce56053866194ae5937012c1bec40f1dd1d9)
  build user:       root@88e419aa1676
  build date:       20191017-13:15:01
  go version:       go1.13.1
```


3.后台启动普罗米修斯：


```
[root@host-10-10-2-99 prometheus]# ./prometheus &
```
即可完成启动，访问 http://ip:9090 端口即可，默认读取当前目录下的prometheus.yml配置文件：


![](https://s1.51cto.com/images/blog/201910/28/c58984e723f965a24da2b92b1b55f6d3.png)

4.我们把服务以系统管理的方式添加：


```
[root@host-10-10-2-99 prometheus]# cat /etc/systemd/system/prometheus.service 
[Unit]
Description=Prometheus Monitoring System
Documentation=Prometheus Monitoring System
 
[Service]
ExecStart=/usr/local/prometheus/prometheus \
  --config.file=/usr/local/prometheus/prometheus.yml \
  --web.listen-address=:9090
 
[Install]
WantedBy=multi-user.target

```

5.启动服务，并且添加到配置文件：


```
[root@host-10-10-2-99 prometheus]# systemctl enable prometheus
Created symlink from /etc/systemd/system/multi-user.target.wants/prometheus.service to /etc/systemd/system/prometheus.service.
[root@host-10-10-2-99 prometheus]# systemctl start prometheus
```


6.当然在有Docker环境下，图方便的朋友直接启动即可：
```
docker run -p 9090:9090 -v /usr/local/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus
```


# Node Exporter 部署


在Prometheus的架构设计中，Prometheus Server并不直接服务监控特定的目标，其主要任务负责数据的收集，存储并且对外提供数据查询支持。因此为了能够能够监控到某些东西，如主机的CPU使用率，我们需要使用到Exporter。Prometheus周期性的从Exporter暴露的HTTP服务地址（通常是/metrics）拉取监控样本数据。

Node Exporter 可以采集到系统相关的信息，例如CPU、内存、硬盘等系统信息。Node Exporter采用Golang编写，并且不存在任何的第三方依赖，只需要下载，解压即可运行。

1.下载部署：
```
[root@host-10-10-2-99 ~]# wget https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.gz
[root@host-10-10-2-99 ~]# tar -xf node_exporter-0.18.1.linux-amd64.tar.gz 
[root@host-10-10-2-99 ~]# mv node_exporter-0.18.1.linux-amd64 /usr/local/node_exporter
```

2.添加到systemctl服务：


```
[root@host-10-10-2-99 ~]# cat /etc/systemd/system/node_exporter.service 
[Unit]
Description=node exporter
Documentation=node exporter
 
[Service]
ExecStart=/usr/local/node_exporter/node_exporter 
 
[Install]
WantedBy=multi-user.target

[root@host-10-10-2-99 ~]# systemctl enable node_exporter
Created symlink from /etc/systemd/system/multi-user.target.wants/node_exporter.service to /etc/systemd/system/node_exporter.service.
[root@host-10-10-2-99 ~]# systemctl start node_exporter

#查看监听端口：

[root@host-10-10-2-99 ~]# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      4323/sshd           
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      4527/master         
tcp6       0      0 :::9100                 :::*                    LISTEN      5206/node_exporter  
tcp6       0      0 :::22                   :::*                    LISTEN      4323/sshd           
tcp6       0      0 ::1:25                  :::*                    LISTEN      4527/master         
tcp6       0      0 :::9090                 :::*                    LISTEN      5219/prometheus    
```

4.也可以和上面类似，可以直接从docker方面启动：

docker run -d  -p 9100:9100   quay.io/prometheus/node-exporter

5.修改Prometheus 配置文件Prometheus.yml，增加相关监控：

```
[root@host-10-10-2-99 prometheus]# cat prometheus.yml
scrape_configs:
  #The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'

    #metrics_path defaults to '/metrics'
    #scheme defaults to 'http'.

    static_configs:
    - targets: ['localhost:9090']

  - job_name: 'linux'
    static_configs:
      - targets: ['10.10.2.99:9100']
[root@host-10-10-2-99 prometheus]# systemctl restart prometheus
```