docker - Prometheus不是在vm上运行，而是在本地Docker上运行

Question

我正在尝试让普罗米修斯在vm上运行。我有几个要监视的微服务，它们正在vm上运行。我将以下内容添加到docker-compose.yml文件之一:

prometheus:
    image: prom/prometheus:v2.1.0
    volumes:
        - ./prometheus.yml:/etc/prometheus/prometheus.yml
    command:
        - '--config.file=/etc/prometheus/prometheus.yml'
    ports:
        - '9090:9090'

然后将prometheus.yml文件添加到与上述docker-compose相同的文件夹中。

global:
  scrape_interval:     15s 
  evaluation_interval: 15s 



scrape_configs:

  - job_name: 'prometheus'

    static_configs:
        - targets: ['localhost:9090']

 - job_name: 'radios-service'


   metrics_path: '/prometheus-metrics'
   static_configs:
        - targets: ['radios-service:8080']

 - job_name: 'websocket-service'
   metrics_path: '/prometheus-websocket'
   static_configs:
      - targets: ['websocket-service:8080']

这可以通过我的命令行在docker上成功运行，但是当我尝试在vm上运行它时会抛出此错误:

ERROR: for prometheus Cannot start service prometheus: b'OCI runtime create failed: container_linux.go:348: starting container process caused "process_linux.go:402: container init caused \"rootfs_linux.go:58: mounting \\"/usr/local/bin/prometheus.yml\\" to rootfs \\"/var/lib/docker/overlay2/f4b34c5866b191683d4e8c08e59fb14f56127cbcd67a603225954dd59c0a6a50/merged\\" at \\"/var/lib/docker/overlay2/f4b34c5866b191683d4e8c08e59fb14f56127cbcd67a603225954dd59c0a6a50/merged/etc/prometheus/prometheus.yml\\" caused \\"not a directory\\"\"": unknown: Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type' ERROR: Encountered errors while bringing up the project.

但是当我在本地运行它不会引发任何问题。虚拟机中的问题可能是什么？

Answer 1

我通过在docker compose中编辑卷行来解决它。我猜在Linux机器上，您需要提供绝对路径。我将prometheus.yml放在/ home /目录中，并将路径更改为如下所示:

prometheus:
image: prom/prometheus:v2.1.0
volumes:
    - /home/prometheus.yml:/etc/prometheus/prometheus.yml
command:
    - '--config.file=/etc/prometheus/prometheus.yml'
ports:
    - '9090:9090'

这似乎有效。