Transfer symfony logfiles with filebeat to graylog in local docker-environment - symfony

Question

Description
I am trying to build an equal configuration in my local docker-environment like on our production system. After spending some time investigating and rebuilding the docker container setup, still can't get it to work and Graylog is not receiving any data.
Overview and interim results
web, php and db container are in use for the symfony based application
symfony runs properly on localhost in php-container and generates logfiles
symfony-logfiles are located here: /var/www/html/var/logs/*.log
symfony-logfiles format is json / gelf
all other containers are also up and running when starting the complete composition
filebeat configuration is based on first link below
filebeat.yml seems to retrieve any logfile found in any container
filebeat configured to transfer data directly to elasticsearch
elasticsearch persists data in mongodb
all graylog related data in persisted in named volumes in docker
additionally I am working with docker-sync on a Mac
The docker-compose.yml is based on the following resources:
https://github.com/jochenchrist/docker-logging-elasticsearch
http://docs.graylog.org/en/2.4/pages/installation/docker.html?highlight=docker
https://www.elastic.co/guide/en/beats/filebeat/6.3/running-on-docker.html
https://www.elastic.co/guide/en/beats/filebeat/6.3/filebeat-reference-yml.html
config.yml
# Monolog Configuration
monolog:
channels: [graylog]
handlers:
graylog:
type: stream
formatter: line_formatter
path: "%kernel.logs_dir%/graylog.log"
channels: [graylog]
docker-compose.yml
version: "3"
services:
web:
image: nginx
ports:
- "80:80"
- "443:443"
links:
- php
volumes:
- ./docker-config/nginx.conf:/etc/nginx/conf.d/default.conf
- project-app-sync:/var/www/html
- ./docker-config/localhost.crt:/etc/nginx/ssl/localhost.crt
- ./docker-config/localhost.key:/etc/nginx/ssl/localhost.key
php:
build:
context: .
dockerfile: ./docker-config/Dockerfile-php
links:
- graylog
volumes:
- project-app-sync:/var/www/html
- ./docker-config/php.ini:/usr/local/etc/php/php.ini
- ./docker-config/www.conf:/usr/local/etc/php-fpm.d/www.conf
db:
image: mysql
ports:
- "3306:3306"
environment:
- MYSQL_ALLOW_EMPTY_PASSWORD=yes
- MYSQL_DATABASE=project
- MYSQL_USER=project
- MYSQL_PASSWORD=password
volumes:
- ./docker-config/mysql.cnf:/etc/mysql/conf.d/mysql.cnf
- project-mysql-sync:/var/lib/mysql
# Graylog / Filebeat
filebeat:
build: ./docker-config/filebeat
volumes:
- /var/lib/docker/containers:/var/lib/docker/containers:ro
- /var/run/docker.sock:/var/run/docker.sock
networks:
- graylog-network
depends_on:
- graylog-elasticsearch
graylog:
image: graylog/graylog:2.4
volumes:
- graylog-journal:/usr/share/graylog/data/journal
networks:
- graylog-network
environment:
- GRAYLOG_PASSWORD_SECRET=somepasswordpepper
- GRAYLOG_ROOT_PASSWORD_SHA2=8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918
- GRAYLOG_WEB_ENDPOINT_URI=http://127.0.0.1:9000/api
links:
- graylog-mongo:mongo
- graylog-elasticsearch:elasticsearch
depends_on:
- graylog-mongo
- graylog-elasticsearch
ports:
# Graylog web interface and REST API
- 9000:9000
graylog-mongo:
image: mongo:3
volumes:
- graylog-mongo-data:/data/db
networks:
- graylog-network
graylog-elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:5.6.10
ports:
- "9200:9200"
volumes:
- graylog-elasticsearch-data:/usr/share/elasticsearch/data
networks:
- graylog-network
environment:
- cluster.name=graylog
- "discovery.zen.minimum_master_nodes=1"
- "discovery.type=single-node"
- http.host=0.0.0.0
- transport.host=localhost
- network.host=0.0.0.0
# Disable X-Pack security: https://www.elastic.co/guide/en/elasticsearch/reference/5.6/security-settings.html#general-security-settings
- xpack.security.enabled=false
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
ulimits:
memlock:
soft: -1
hard: -1
volumes:
project-app-sync:
external: true
project-mysql-sync: ~
graylog-mongo-data:
driver: local
graylog-elasticsearch-data:
driver: local
graylog-journal:
driver: local
networks:
graylog-network: ~
Dockerfile of filebeat container
FROM docker.elastic.co/beats/filebeat:6.3.1
COPY filebeat.yml /usr/share/filebeat/filebeat.yml
# must run as root to access /var/lib/docker and /var/run/docker.sock
USER root
RUN chown root /usr/share/filebeat/filebeat.yml
# dont run with -e, to disable output to stderr
CMD [""]
filebeat.yml
filebeat.prospectors:
- type: docker
paths:
- '/var/lib/docker/containers/*/*.log'
# path to symfony based logs
- '/var/www/html/var/logs/*.log'
containers.ids: '*'
processors:
- decode_json_fields:
fields: ["host","application","short_message"]
target: ""
overwrite_keys: true
- add_docker_metadata: ~
output.elasticsearch:
# transfer data to elasticsearch container?
hosts: ["localhost:9200"]
logging.to_files: true
logging.to_syslog: false
Graylog backend
After setting up this docker composition I started the Graylog web-view and set up a collector and input as described here:
http://docs.graylog.org/en/2.4/pages/collector_sidecar.html#step-by-step-guide
Maybe I have totally misunderstood how this could work. I am not totally sure if Beats from Elastic is the same as the filebeats container and if the sidecar collector is something extra I forgot to add. Maybe I misconfigured the collector and input in graylog?!
I would be thankful to any help or working example according to my problem ...

Answer 1

Graylog seems to be running on http://127.0.0.1:9000/api which is in the container. You might want to run it as http://graylog:9000/api or as http://0.0.0.0:9000/api
Accessing the other images from within any of the other images will have be done with the same name as the service name, as defined in the docker-compose.yml files. The url to the graylog-elasticsearch would be something like: http://graylog-elasticsearch/.... if you would post to localhost it would stay inside its own image.
Hope this will help you along in finding the solution.