使用Docker Compose设置Prometheus

Question

我对Prometheus和Docker Compose是新手。我有一个项目结构与docker-compose.yml文件，设置普罗米修斯和Grafana：/prometheus-grafana/prometheus/docker-compose.yml

version: '3'

services:
prometheus:
image: prom/prometheus:v2.21.0
ports:
- 9000:9090
volumes:
- ./prometheus:/etc/prometheus
- prometheus-data:/prometheus
command: --web.enable-lifecycle --config.file=/etc/prometheus/prometheus.yml

grafana:
image: grafana/grafana:$GRAFANA_VERSION
environment:
GF_SECURITY_ADMIN_USER: $GRAFANA_ADMIN_USER
GF_SECURITY_ADMIN_PASSWORD: $GRAFANA_ADMIN_PASSWORD
ports:
- 3000:3000
volumes:
- grafana-storage:/var/lib/grafana
depends_on:
- prometheus
networks:
- internal

networks:
internal:

volumes:
prometheus-data:
grafana-storage:

我刚刚在/prometheus-grafana/prometheus/prometheus/prometheus.yml中添加了更多的配置，我添加的部分是最后3行：

global:
scrape_interval: 30s
scrape_timeout: 10s

rule_files:
- alert.yml

scrape_configs:
- job_name: services
metrics_path: /metrics
static_configs:
- targets:
- 'prometheus:9090'
- 'idonotexists:564'
- job_name: myapp
scrape_interval: 10s
static_configs:
- targets:
- localhost:2112

我通过运行以下命令启动普罗米修斯：docker-compose up -d，我在http://localhost:9000/graph上找到了普罗米修斯，但我没有看到我添加到prometheus.yml中的新配置，在docker-compose.yml文件中，有一行：

command: --web.enable-lifecycle --config.file=/etc/prometheus/prometheus.yml

我是不是应该把这个也改为我项目中另一个/prometheus-grafana/prometheus/prometheus/prometheus.yml的路径，而不是从/etc/prometheus/prometheus.yml，因为实际上，这个文件并不存在/etc/prometheus/prometheus.yml

提前谢谢你。

Answer 1

如果你用--config.file=/etc/prometheus/prometheus.yml配置了普罗米修斯，它希望它的配置文件就在这个位置。

因为您已经配置了以下挂载点：

volumes:
- ./prometheus:/etc/prometheus
- prometheus-data:/prometheus

您只需将配置文件放入./prometheus并将其命名为prometheus.yml