配置Prometheus
官方地址：Download | Prometheus
（wegt下载压缩包，解压并重命名prometheus，文件放于/data/prometheus即可）
配置 service方法(文件放于 /etc/systemd/system/prometheus.service)：
[Unit]Description=Prometheus ServerDocumentation=https://prometheus.io/docs/introduction/overview/After=network-online.target[Service]Type=simpleUser=prometheus
Group=prometheusExecStart=/data/prometheus/prometheus/prometheus \--config.file=/data/prometheus/prometheus/prometheus.yml \--storage.tsdb.path=/data/prometheus/prometheus/data \--storage.tsdb.retention.time=60d \--web.enable-lifecycleRestart=on-failure[Install]WantedBy=multi-user.target
授权给用户 prometheus
# 创建用户 -M 不创建源目录 -s 指定 shell
useradd -M -s /usr/sbin/nologin prometheus# 赋权
chown prometheus:prometheus -R /data/prometheus启动运行并检查状态
# 启动
systemctl start prometheus.service# 检查
systemctl status prometheus.service# 开启自启动
systemctl enable prometheus.service# 修改单元文件，重新加载systemd配置
sudo systemctl daemon-reload# 检查日志方法
journalctl -u prometheus.service -f重新加载 prometheus
# -X 指定 POST 请求
curl -X POST http://localhost:9090/-/reload 访问web地址9090：
# ip:9090 访问
prometheus http://xxx.xxx.xxx.xxx:9090 监控指标 http://xxx.xxx.xxx.xxx:9090/metrics
配置 alertmanager
配置文件
[Unit]Description=Alert ManagerWants=network-online.target
After=network-online.target[Service]Type=simpleUser=prometheus
Group=prometheusExecStart=/data/prometheus/alertmanager/alertmanager \--config.file=/data/prometheus/alertmanager/alertmanager.yml \--storage.path=/data/prometheus/prometheus/data \Restart=always[Install]WantedBy=multi-user.target访问：web端口9093
配置alert服务器告警提示：
root@pass:~# cat /data/prometheus/prometheus/alert.ymlgroups:
- name: Prometheus alertrules:- alert: 服务告警expr: up == 0for: 30slabels:severity: criticalannotations:instance: "{{ $labels.instance }}"description: "{{ $labels.job }} 服务器"访问web检查：
检查yml文件配置方法promtool工具：
root@pass:~# cd /data/prometheus/prometheus/
root@pass:/data/prometheus/prometheus# ./promtool check config prometheus.yml
Checking prometheus.ymlSUCCESS: 1 rule files foundSUCCESS: prometheus.yml is valid prometheus config file syntaxChecking alert.ymlSUCCESS: 1 rules found配置grafana
下载地址：Download Grafana | Grafana Labs
配置service文件：
[Unit]
Description=Grafana serverDocumentation=http://docs.grafana.org[Service]
Type=simple
User=prometheus
Group=prometheus
Restart=on-failure
ExecStart= /data/prometheus/grafana/bin/grafana-server \--config=/data/prometheus/grafana/conf/defaults.ini \--homepath=/data/prometheus/grafana[Install]
WantedBy=multi-user.target
访问web端口3000：（默认账号及密码admin/admin）
配置node_exporter
下载地址同Prometheus
配置service文件：
[Unit]
Description=node_exporterDocumentation=http://prometheus.io/After=network.target[Service]
User=prometheus
Group=prometheus
Restart=on-failure
ExecStart= /data/prometheus/node_exporter/node_exporter[Install]
WantedBy=multi-user.target
访问web端口9100
最后注意记得配置时将需要的配置到Prometheus.yml中：
# 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:- localhost:9093 # - alertmanager:9093# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:- "alert.yml"# - "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"]- job_name: "node-exporter"scrape_interval: 15s# metrics_path defaults to '/metrics'# scheme defaults to 'http'.static_configs:- targets: ["localhost:9090"]labels:instance: Prometheus服务器web页面展示
手动创建仪表板：官方地址 Grafana dashboards | Grafana Labs
复制需要的ID ，然后导入到granafa图表中即可
第一步：
第二步：
第三步：
展示结果：
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