Docker logging in stack

General Discussions
1

I am trying to set up a simple stack where I have a graylog server and have mysql log its messages there. docker-compose.yml looks like this

version: "3"
services:
  database:
    image: mariadb:10.1
    volumes:
    - 'mariadb_data:/var/lib/mysql'
    depends_on:
    - graylog
    environment:
      MYSQL_DATABASE: "jeesample"
      MYSQL_USER: "jeeuser"
      MYSQL_PASSWORD: "password"
      MYSQL_RANDOM_ROOT_PASSWORD: "true"
    logging:
      driver: gelf
      options:
        gelf-address: "udp://graylog:12201"
  graylog:
    image: graylog2/server:2.2.3-1
    depends_on:
    - graylog-db
    - graylog-es
    environment:
      GRAYLOG_PASSWORD_SECRET: somepasswordpepper
      GRAYLOG_ROOT_PASSWORD_SHA2: 8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918
      GRAYLOG_WEB_ENDPOINT_URI: http://127.0.0.1:9000/api
    links:
    - graylog-db:mongo
    - graylog-es:elasticsearch
    ports:
    - "9000:9000"
    expose:
    - "12201/udp"
  graylog-db:
    image: mongo:3
  graylog-es:
    image: elasticsearch:2
    command: "elasticsearch -Des.cluster.name='graylog'"
    volumes:
      - graylog_es_data:/usr/share/elasticsearch/data
volumes:
  mariadb_data:
    driver: local
  graylog_es_data:
    driver: local

But when I do docker-compose up I get

ERROR: for controller Cannot start service controller: Failed to initialize logging driver: gelf: cannot connect to GELF endpoint: graylog:12201 dial udp: lookup graylog on 192.168.65.1:53: no such host

Should i open an issue for this or is there one already in github?

2

I had the same problem.

I don’t think you can’t tell docker to do logging using a docker service that way.

My solution was to map the graylog to a docker port like:
ports:
- 12201: 12201/udp)

and then use:
options:
gelf-address: “udp://localhost:12201”

I have not seen anything in the logs yet though.
I’d like to know if you get it to work…

3

How about using fluentd to forward logs from containers to the graylog2 server?

http://www.fluentd.org/guides/recipes/graylog2

https://hub.docker.com/r/graylog2/server/
https://hub.docker.com/r/fluent/fluentd/