CentOS8 安装Grafana,Prometheus

安装Prometheus Server

创建用户

useradd -m -s /bin/false prometheus
id prometheus

创建配置目录

存储Prometheus配置文件和数据

mkdir /etc/prometheus
mkdir /var/lib/prometheus
# 在/var/lib/prometheus上设置所有权
chown prometheus:prometheus /var/lib/prometheus/

下载

# 地址https://prometheus.io/download/，请选取合适的版本
dnf install wget -y
wget https://github.com/prometheus/prometheus/releases/download/v2.19.2/prometheus-2.19.2.linux-amd64.tar.gz -P /tmp

解压

tar -zxpvf prometheus-2.19.2.linux-amd64.tar.gz
# 复制prometheus和promtool到/usr/local/bin路径
cd /tmp/prometheus-2.19.2.linux-amd64
cp prometheus  /usr/local/bin
cp promtool  /usr/local/bin
# 将prometheus.yml复制到/etc/prometheus/路径
cp prometheus.yml /etc/prometheus/

创建配置文件

 vi /etc/prometheus/prometheus.yml

# Global config

global:

  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute. 

  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute. 

  scrape_timeout: 15s  # scrape_timeout is set to the global default (10s).

# 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.

  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'

    # scheme defaults to 'http'.

    static_configs:

    - targets: ['localhost:9090']

防火墙开放9090

firewall-cmd --add-port=9090/tcp --permanent
firewall-cmd --reload

创建systemd服务文件

为了使用systemd将Prometheus作为服务进行管理

vi /etc/systemd/system/prometheus.service

[Unit]

Description=Prometheus Time Series Collection and Processing Server

Wants=network-online.target

After=network-online.target

 

[Service]

User=prometheus

Group=prometheus

Type=simple

ExecStart=/usr/local/bin/prometheus \

    --config.file /etc/prometheus/prometheus.yml \

    --storage.tsdb.path /var/lib/prometheus/ \

    --web.console.templates=/etc/prometheus/consoles \

    --web.console.libraries=/etc/prometheus/console_libraries

 

[Install]

WantedBy=multi-user.target

启动

# 重新加载
systemctl daemon-reload
# 启动并使Prometheus在启动时运行
systemctl start prometheus
systemctl enable prometheus
# 验证Prometheus正在运行
systemctl status prometheus
# 查看端口9090
netstat -tunlp |grep 9090
# 浏览器打开http://server-ip:9090

安装node_exporter

node_exporter可收集和运送大量Linux系统指标，例如CPU，内存使用率，文件系统和网络统计信息。

创建用户

useradd -m -s /bin/false node_exporter
id node_exporter

下载解压

wget https://github.com/prometheus/node_exporter/releases/download/v1.0.1/node_exporter-1.0.1.linux-amd64.tar.gz
tar -zxpvf node_exporter-1.0.1.linux-amd64.tar.gz
# 复制node_exporter到/usr/local/bin
cp node_exporter-1.0.1.linux-amd64/node_exporter /usr/local/bin
chown node_exporter:node_exporter /usr/local/bin/node_exporter
# 配置node_exporter以作为服务运行
vi /etc/systemd/system/node_exporter.service

node_exporter.service内容

[Unit]

Description=Prometheus Node Exporter

Wants=network-online.target

After=network-online.target

 

[Service]

User=node_exporter

Group=node_exporter

Type=simple

ExecStart=/usr/local/bin/node_exporter

 

[Install]

WantedBy=multi-user.target`

# 重新加载
systemctl daemon-reload
# 启动并启用node_exporter服务
systemctl start node_exporter
systemctl enable node_exporter
# 查看状态
systemctl status node_exporter
# 查看端口
netstat -pnltu | grep 9100
# 防火墙中打开端口9100
firewall-cmd --add-port=9100/tcp  --permanent
irewall-cmd --reload

将node_exporter目标添加到prometheus.yml文件

vi /etc/prometheus/prometheus.yml

- job_name: 'node_exporter'

   static_configs:

   - targets: ['localhost:9100']

# 重新启动Prometheus服务
systemctl restart prometheus
# 进入浏览器查看指标
# http://192.168.174.195:9100/metrics

安装Grafana

下载地址

https://grafana.com/grafana/download

安装

wget https://dl.grafana.com/enterprise/release/grafana-enterprise-8.3.6-1.x86_64.rpm
sudo yum install grafana-enterprise-8.3.6-1.x86_64.rpm

检查是否安装成功

/usr/sbin/grafana-server -v

启动

systemctl start grafana-server.service

检查是否启动成功

ss -lntp | grep 3000

对接prometheus

登录

http://121.122.123.47:3000/login
# admin/admin
# 修改密码 admin/111111

配置数据源

选择prometheus

添加dashboard

import现成的dashboard

https://grafana.com/grafana/dashboards?orderBy=name&direction=asc