Docker compose您是否正在尝试将目录挂载到文件中(反之亦然)？

Question

我使用的是Docker版本20.07，正在尝试挂载我的配置文件。

我的Docker compose看起来像这样的-：

version: '2'
services:
  prometheus:
    image: prom/prometheus
    ports:
      - '9090:9090'
    container_name: prometheus
    restart: always
    volumes:
      - './prometheus/prometheus.yml:/etc/prometheus/prometheus.yml'
  grafana:
    image: grafana/grafana
    ports:
      - '3000:3000'
    container_name: grafana
    restart: always
    depends_on:
      - prometheus
    volumes:
      - './grafana/config/grafana.ini:/etc/grafana/grafana.ini'

我的文件夹结构是这样的：

Root
Monitoring_Stack
-- prometheus.yml
-- grafana.ini
-- docker-compose.yml

当我做docker-compose up -d的时候，我总是得到:-

ERROR: for prometheus  Cannot start service prometheus: OCI runtime create failed: container_linux.go:380: starting container process caused: process_linux.go:545: container init caused: rootfs_linux.go:76: mounting "/run/desktop/mnt/host/d/Docker/monitoring_stack/prometheus/prometheus.yml" to rootfs at "/etc/prometheus/prometheus.yml" caused: mount through procfd: 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.

如果我做错了什么，我将不胜感激。谢谢。

Answer 1

对于主机卷，如果源不存在，docker会将其创建为空目录(否则绑定挂载将失败)。如果容器内的目标是一个文件，则这不起作用。

您的目录结构中没有文件./prometheus/prometheus.yml。取而代之的是你有一个./prometheus.yml。对于grafana也是如此。左边的路径是主机上容器外部的路径。冒号后面是容器内的路径。