docker-compose.yml 

    1. version: "3"
    3. services:
    4.   prometheus:
    5.     container_name: prometheus
    6.     image: prom/prometheus:v2.23.0
    7.     ports:
    8.       - 9090:9090
    9.     volumes:
    10.       - ./prometheus.yml:/etc/prometheus/prometheus.yml
    11.       - ./data:/prometheus

    新建 ./prometheus.yml 文件，该文件是 prometheus 的配置文件，默认配置如下：

    1. # my global config
    2. global:
    3.   scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
    4.   evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
    5.   # scrape_timeout is set to the global default (10s).
    7. # Alertmanager configuration
    8. alerting:
    9.   alertmanagers:
    10.   - static_configs:
    11.     - targets:
    12.       # - alertmanager:9093
    14. # Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
    15. rule_files:
    16.   # - "first_rules.yml"
    17.   # - "second_rules.yml"
    19. # A scrape configuration containing exactly one endpoint to scrape:
    20. # Here it's Prometheus itself.
    21. scrape_configs:
    22.   # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
    23.   - job_name: 'prometheus'
    25.     # metrics_path defaults to '/metrics'
    26.     # scheme defaults to 'http'.
    28.     static_configs:
    29.     - targets: ['localhost:9090']

    如果要手机新的系统的监控信息，可以在 scrape_configs 下新增一个 job ，以 mysql 为例：

    1. - job_name: 'mysql8'
    2.     static_configs:
    3.     - targets: ['192.168.0.103:9104']

    如果 mysqld-exporter 已经把端口暴露出来的话， targets 可以填宿主机器 ip，或者与 mysqld-exporter 在同个网络下的话，可以填 mysql-exporter-network:9104

    链接：https://github.com/prometheus/mysqld_exporter