需要用到的安装包：

Prometheus官方网站：https://prometheus.io/

主程序：

下载对应系统的软件包这里使用的是2.36.0的Linux版本

https://github.com/prometheus/prometheus/releases/download/v2.36.0/prometheus-2.36.0.linux-amd64.tar.gz

信息采集器node_exporter

https://github.com/prometheus/node_exporter/releases/download/v1.3.1/node_exporter-1.3.1.linux-amd64.tar.gz

Grafana官方网站：https://grafana.com/

这里通过清华源下载的rpm包，因为系统提示清华源证书过期，所以添加了–no-check-certificate命令。

下载对应系统的安装包，建议下载7.0-8.0之间的版本（因为老师教程是这么说的）

wget –no-check-certificate https://mirrors.tuna.tsinghua.edu.cn/grafana/yum/rpm/grafana-7.3.0-1.x86_64.rpm

开始安装

Prometheus的主程序和采集器解压之后可以直接运行。

主程序为：prometheus 配置文件：prometheus.yml

这里将Prometheus的主程序和采集器分别放置在了

/usr/local/prometheus/prometheus和/usr/local/node_exporter/node_exporter目录下

然后，编辑主程序系统自启动文件：vim /etc/systemd/system/prometheus.service

============================================================================================================================

[Unit]
Description=Prometheus Server
Documentation=https://prometheus.io/docs/introduction/overview/
After=network-online.target

[Service]
Restart=on-failure
ExecStart=/usr/local/prometheus/prometheus –config.file=/usr/local/prometheus/prometheus.yml

[Install]
WantedBy=multi-user.target

============================================================================================================================

编辑信息采集器系统自启动文件：vim /etc/systemd/system/node_exporter.service

============================================================================================================================

[Unit]
Description=node_exporter
After=network.target

[Service]
Type=on-failure
ExecStart=/usr/local/node_exporter/node_exporter
PIDFile=/usr/local/node_exporter/node_exporter.pid

[Install]
WantedBy=multi-user.target

============================================================================================================================

保存后不忘systemctl daemon-reload一下

加入开机自启

systemctl enable prometheus

systemctl enable node_exporter

然后进入Prometheus的配置文件，添加监控端口：

vim /usr/local/prometheus/prometheus.yml

============================================================================================================================

# my global config
global:
scrape_interval: 15s #设置刷新时间，默认1分钟
evaluation_interval: 15s # 设置评估时间，默认1分钟
# scrape_timeout is set to the global default (10s).

# Alertmanager configuration#报警设置，暂时不管
alerting:
alertmanagers:
– static_configs:
– targets:
# – alertmanager:9093

# Load rules once and periodically evaluate them according to the global ‘evaluation_interval’.#规则文件设置，暂时不管
rule_files:
# – “first_rules.yml”
# – “second_rules.yml”

# A scrape configuration containing exactly one endpoint to scrape:
# Here it’s Prometheus itself.
scrape_configs:
# The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.#设置任务名称
– job_name: “prometheus”

# metrics_path defaults to ‘/metrics’
# scheme defaults to ‘http’.

static_configs:
– targets: [“localhost:9090″,”127.0.0.1:9100”]#设置任务监听主机和端口。这里添加了node_exporter服务的9100端口

============================================================================================================================

保存退出。

启动node_exporter和prometheus服务

systemctl start node_exporter

systemctl start prometheus

查询服务状态

systemctl status node_exporter

systemctl status prometheus

查询服务状态正常运行后可以继续安装grafana

切换至grafana的下载目录并安装

yum install grafana-7.3.0-1.x86_64.rpm

启动、查询、加入开机自启

systemctl start grafana-server

systemctl status grafana-server

systemctl enable grafana-server

然后可以访问到服务器的默认3000端口。

配置grafana的数据来源和Dashboard

默认登陆用户名和密码为admin

进入后可修改

进入grafana图形化界面的Configuration——DataSources

添加Prometheus数据库

Url填写Prometheus服务端口http://127.0.0.1:9090

保存即可

在图形化界面Create——Import选项中，可以导入官方的图形化界面（网址：https://grafana.com/grafana/dashboards/）

这里下载的是：主机基础监控(cpu，内存，磁盘，网络)（搜索框搜索关键字即可）

安装完成后，在主界面载入Dashboard选择IP地址为node_exproter的端口127.0.0.1:9100

图形化界面显示成功