| 突发奇想

debian11部署Prometheus、Alertmanager、node_exporter

安装Prometheus

创建prometheus用户

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useradd -M -s /usr/sbin/nologin prometheus

下载二进制文件压缩包

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wget https://github.com/prometheus/prometheus/releases/download/v2.45.4/prometheus-2.45.4.linux-amd64.tar.gz

解压安装包内容至/opt/prometheus/prometheus

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tar -xvf ./prometheus-2.45.4.linux-amd64.tar.gz -C /opt/prometheus
mv /opt/prometheus/prometheus-2.45.4.linux-amd64 /opt/prometheus/prometheus

更改/opt/prometheus以及其内容的属主和属组

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chown prometheus:prometheus -R  /opt/prometheus

创建prometheus服务

创建文件

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vim /etc/systemd/system/prometheus.service

插入如下内容后保存退出

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

[Service]
Type=simple  
User=prometheus  
Group=prometheus  
Restart=on-failure
ExecStart=/opt/prometheus/prometheus/prometheus \
  --config.file="/opt/prometheus/prometheus/prometheus.yml" \
  --storage.tsdb.path="/opt/prometheus/prometheus/data" \
  --storage.tsdb.retention.time="60d" \
  --web.enable-lifecycle


[Install]
WantedBy=multi-user.target

启动服务

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systemctl start prometheus

安装alertmanager

下载二进制文件压缩包

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wget https://github.com/prometheus/alertmanager/releases/download/v0.27.0/alertmanager-0.27.0.linux-amd64.tar.gz

解压安装包内容至/opt/prometheus/alertmanager

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tar -xvf ./alertmanager-0.27.0.linux-amd64.tar.gz -C /opt/prometheus
mv /opt/prometheus/alertmanager-0.27.0.linux-amd64 /opt/prometheus/alertmanager

更改/opt/prometheus以及其内容的属主和属组

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chown prometheus:prometheus -R  /opt/prometheus

创建prometheus服务

创建文件

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vim /etc/systemd/system/alertmanager.service

插入如下内容后保存退出

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[Unit]
Description=Alert Manager
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=prometheus
Group=prometheus
ExecStart=/opt/prometheus/alertmanager/alertmanager --config.file=/opt/prometheus/alertmanager/alertmanager.yml --storage.path=/opt/prometheus/alertmanager/data
Restart=always

[Install]
WantedBy=multi-user.target

启动服务

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systemctl start alertmanager

整合alertmanager和prometheus

修改prometheus配置

打开prometheus配置文件

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vim /opt/prometheus/prometheus/prometheus.yml

加入如下内容

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alerting:
  alertmanagers:
    - static_configs:
      - targets:
      # 根据实际填写alertmanager的地址
        - localhost:9093

rule_files:
# 根据实际名修改文件名
  - "alert.yml"

增加触发器配置文件

新建文件

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vim /opt/prometheus/prometheus/alert.yml

添加内容

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groups:
- name: Prometheus alert
  rules:
    # 对任何实例超过30s无法联系的情况发出警报
    - alert: 服务告警
      expr: up == 0
      for: 30s
      labels:
        severity: critical
      annotations:
        instance: "{{ $labels.instance }}"
        description: "{{ $labels.job }} 服务已关闭"

检查配置文件

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/opt/prometheus/prometheus/promtool check config /opt/prometheus/prometheus/prometheus.yml

重启服务

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systemctl restart prometheus

安装Grafana

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sudo apt-get install -y adduser libfontconfig1 musl
wget https://dl.grafana.com/enterprise/release/grafana-enterprise_10.4.1_amd64.deb
sudo dpkg -i grafana-enterprise_10.4.1_amd64.deb

安装node_exporter

下载二进制文件压缩包

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wget https://github.com/prometheus/node_exporter/releases/download/v1.7.0/node_exporter-1.7.0.linux-amd64.tar.gz

解压安装包内容至/opt/prometheus/node_exporter

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tar -xvf ./node_exporter-1.7.0.linux-amd64.tar.gz -C /opt/prometheus
mv /opt/prometheus/node_exporter-1.7.0.linux-amd64 /opt/prometheus/node_exporter

更改/opt/prometheus以及其内容的属主和属组

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chown prometheus:prometheus -R  /opt/prometheus

创建node_exporter服务

创建文件

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vim /etc/systemd/system/node_exporter.service

插入如下内容后保存退出

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[Unit]
Description=node_exporter
Documentation=https://prometheus.io/
After=network.target

[Service]
User=prometheus
Group=prometheus
ExecStart=/opt/prometheus/node_exporter/node_exporter
Restart=on-failure

[Install]
WantedBy=multi-user.target

启动服务

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systemctl start node_exporter

配置prometheus自动拉取node_exporter数据

打开prometheus配置文件

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vim /opt/prometheus/prometheus/prometheus.yml

追加内容

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- job_name: 'node-exporter'
  scrape_interval: 15s
  static_configs:
  - targets: ['localhost:9100']
    labels:
      instance: node-exporter服务器01

grafana添加prometheus数据源

进入grafana的web图形界面，登录

默认账号：admin，
默认密码：admin

  • 新增prometheus数据源

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保存即可

grafana添加node_exporter仪表盘

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在新页面中，找到node_exporter，进入详情页，点击按钮复制ID

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返回grafana，在输入框中粘贴，然后点击Load按钮

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Name可自行修改，然后数据源选择刚刚创建的prometheus

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最后点击Import即可