Why am I getting this error when creating a stack on docker?-CodePudding

I'm a complete docker noob. Just installed docker and docker-compose as well as portainer following a tutorial.

Now I would like to set up traefik reverse proxy on portainer.

This is the traefik.yml file in /etc/traefik

  global:
  checkNewVersion: true
  sendAnonymousUsage: false  # true by default

# (Optional) Log information
# ---
# log:
#  level: ERROR  # DEBUG, INFO, WARNING, ERROR, CRITICAL
#   format: common  # common, json, logfmt
#   filePath: /var/log/traefik/traefik.log

# (Optional) Accesslog
# ---
# accesslog:
  # format: common  # common, json, logfmt
  # filePath: /var/log/traefik/access.log

# (Optional) Enable API and Dashboard
# ---
 api:
  dashboard: true  # true by default
  insecure: true  # Don't do this in production!

# Entry Points configuration
# ---
entryPoints:
  web:
    address: :80
    # (Optional) Redirect to HTTPS
    # ---
    # http:
    #   redirections:
    #     entryPoint:
    #       to: websecure
    #       scheme: https

  websecure:
    address: :443

# Certificates configuration
# ---
# TODO: Custmoize your Cert Resolvers and Domain settings
#

This is the docker-compose file:

version: '3'

volumes:
  traefik-ssl-certs:
    driver: local

services:
  traefik:
    image: "traefik:v2.5"
    container_name: "traefik"
    ports:
      - "80:80"
      - "443:443"
      # (Optional) Expose Dashboard
      - "8080:8080"  # Don't do this in production!
    volumes:
      - /etc/traefik:/etc/traefik
      - traefik-ssl-certs:/ssl-certs
      - /var/run/docker.sock:/var/run/docker.sock:ro

But when I try to start the container I get this error:

2021/12/08 18:08:07 command traefik error: yaml: line 19: did not find expected key

I can get the container to run when I remove the whole "volumes" section under "services" from the docker-compose file, but I need it for my traefik set up. I have no clue what I did wrong as I am following a video tutorial for this 1:1

CodePudding user response：

can you share the whole terminal log? Is that error from inside the container?

Anyhow, I think you should check your traefik.yml indentation. There are some keys at different levels and YAML is pretty sensible to this. I'm talking specially about:

global
checkNewVersion
sendAnonymousUsage
api

Check the number of spaces before them.

CodePudding user response：

Try putting double-quotes around the definition of the final volume (and the others too for consistency). eg:

version: '3'

volumes:
  traefik-ssl-certs:
    driver: local

services:
  traefik:
    image: "traefik:v2.5"
    container_name: "traefik"
    ports:
      - "80:80"
      - "443:443"
      # (Optional) Expose Dashboard
      - "8080:8080"  # Don't do this in production!
    volumes:
      - "/etc/traefik:/etc/traefik"
      - "traefik-ssl-certs:/ssl-certs"
      - "/var/run/docker.sock:/var/run/docker.sock:ro"