centos7下安装promethus及grafana

1、下载，如下地址下载prometheus和相应的exporter
https://github.com/prometheus/prometheus/releases
本次下载的是2.55.1
https://github.com/prometheus/prometheus/releases/download/v2.55.1/prometheus-2.55.1.linux-amd64.tar.gz
2、node_exporter
https://github.com/prometheus/node_exporter/releases
版本为1.8.2
https://github.com/prometheus/node_exporter/releases/download/v1.8.2/node_exporter-1.8.2.linux-amd64.tar.gz
3、解压并复制文件到/usr/bin
tar zxvf prometheus-2.55.1.linux-amd64.tar.gz
tar zxvf node_exporter-1.8.2.linux-amd64.tar.gz

prometheus.yaml 文件内容：其实是模板

# my 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 is set to the global default (10s).

# Alertmanager configuration
alerting:
  alertmanagers:
    - static_configs:
        - targets:
          # - alertmanager:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
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.
  - job_name: "prometheus"

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

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

4、设置服务
nano /usr/lib/systemd/system/prometheus.service

[Unit]
  Description=https://prometheus.io
  
  [Service]
  Restart=on-failure
  ExecStart=/usr/bin/prometheus --config.file=/app/prometheus/prometheus.yml --web.listen-address=:9090

  [Install]                      
  WantedBy=multi-user.target

systemctl status prometheus
systemctl start prometheus
systemctl enable prometheus

5、启动后
起来后使用 节点名或ip:9090访问

6、node_exporter启动

直接启动

./node_exporter &

启动后会监听9100端口

添加为服务方式启动

nano /usr/lib/systemd/system/node_exporter.service

[Unit]
Description=node_exporter
After=network.target 

[Service]
ExecStart=/usr/bin/node_exporter
Restart=on-failure

[Install]
WantedBy=multi-user.target

启动node_exporter

systemctl daemon-reload
systemctl start node_exporter
7、安装grafana

docker run -d -p 3000:3000 --name grafana swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/rancher/mirrored-grafana-grafana:9.1.5

8、下载grfana的promethus模板并导入
访问地址 节点ip:3000 默认admin/admin
promethus的grafana模板
https://grafana.com/grafana/dashboards/8919