docker-compose 搭建 Prometheus+Grafana监控系统

技术分享 2年前 (2022-06-13) 0 999+

关注

有关监控选型之前有写过一篇文章: 监控系统选型，一文轻松搞定！

监控对象

Linux服务器
Docker
Redis
MySQL

数据采集

1)、prometheus: 采集数据

2)、node-exporter: 收集操作系统和硬件信息的metrics

3)、cadvisor : 收集Docker的metrics

4)、redis-exporter: 收集Redis的metrics

5)、 mysql-exporter: 收集MySQL的metrics

报表

grafana: 图表展示

一、环境搭建

1、MySQL用户授权

之前想用root账号尝试收集MySQL的metrics,但在启动docker的时候一直报错：

“Error pinging mysqld" err="Error 1049: Unknown database

后来去官方地址在发现，需要对用户进行授权才能收集监控数据信息。

gitHub开源项目有说明: https://github.com/prometheus/mysqld_exporter

所以这里重新创建用户并授权。

CREATE USER 'exporter'@'%' IDENTIFIED BY '123456'; GRANT PROCESS, REPLICATION CLIENT ON *.* TO 'exporter'@'%'; GRANT SELECT ON performance_schema.* TO 'exporter'@'%';

注意：建议为用户设置最大连接限制，以避免在重负载下监控抓取使服务器过载。

2、配置docker-compose.yml

我在/etc/prometheus创建一个docker-compose.yml文件,文件内容如下

version: '2'  networks:     monitor:         driver: bridge  services:     prometheus:         image: prom/prometheus         container_name: prometheus         hostname: prometheus         restart: always         volumes:             - ./prometheus.yml:/etc/prometheus/prometheus.yml         ports:             - "9090:9090"         networks:             - monitor      alertmanager:  #预警模块         image: prom/alertmanager         container_name: alertmanager         hostname: alertmanager         restart: always         ports:             - "9093:9093"         networks:             - monitor      grafana:         image: grafana/grafana         container_name: grafana         hostname: grafana         restart: always         ports:             - "3000:3000"         networks:             - monitor      node-exporter:         image: quay.io/prometheus/node-exporter         container_name: node-exporter         hostname: node-exporter         restart: always         ports:             - "9100:9100"         networks:             - monitor      cadvisor:         image: google/cadvisor:latest         container_name: cadvisor         hostname: cadvisor         restart: always         volumes:             - /:/rootfs:ro             - /var/run:/var/run:rw             - /sys:/sys:ro             - /var/lib/docker/:/var/lib/docker:ro         ports:             - "8899:8080"         networks:             - monitor      redis-exporter:         image: oliver006/redis_exporter         container_name: redis-exporter         hostname: redis-exporter         restart: always         ports:             - "9121:9121"         command:             - "--redis.addr=redis://127.0.0.1:6379"         networks:             - monitor      mysql_xporter:         image: prom/mysqld-exporter         container_name: mysql-exporter         hostname: mysql-exporter         restart: always         ports:             - "9104:9104"         environment:             DATA_SOURCE_NAME: 'exporter:123456@(127.0.0.1:3306)'         networks:             - monitor

因为这里prometheus容器的配置文件重新挂载了，挂载到/etc/prometheus/目录下，所以在该目录创建好prometheus.yml文件。

3、配置prometheus.yml

global:   scrape_interval:     15s   evaluation_interval: 15s scrape_configs:   - job_name: 'prometheus'     static_configs:     - targets: ['ip:9090'] //ip为自己服务器IP   - job_name: 'cadvisor'     static_configs:     - targets: ['ip:8899']   - job_name: 'node'     static_configs:     - targets: ['ip:9100']   - job_name: 'redis_exporter'     static_configs:     - targets: ['ip:9121']   - job_name: 'mysql_exporter'     static_configs:     - targets: ['ip:9104']