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Kevin Fiseneck
Kevin Fiseneck

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Manage logs with Symfony and Graylog

#symfony #graylog #docker #php

Logging with Symfony - Graylog

Docker-compose configuration

Graylog need elasticsearch and mongodb to store and index data.
Let's create our docker-compose file:

 version: '3.7' services: #[...] elasticsearch: image: docker.elastic.co/elasticsearch/elasticsearch:7.12.1 environment: - node.name=elasticsearch - cluster.name=docker-cluster - bootstrap.memory_lock=true - discovery.type=single-node - xpack.security.enabled=false - "ES_JAVA_OPTS=-Xms512m -Xmx512m" ulimits: memlock: soft: -1 hard: -1 volumes: - esdata:/usr/share/elasticsearch/data ports: - 9200:9200 mongodb: image: "mongo:4.2" restart: always graylog: image: "graylog/graylog:4.3.2" depends_on: - elasticsearch - mongodb entrypoint: "/usr/bin/tini -- wait-for-it elasticsearch:9200 -- /docker-entrypoint.sh" environment: GRAYLOG_PASSWORD_SECRET: somepasswordpepper # to generate a password hash, type: echo -n admin | shasum -a 256 GRAYLOG_ROOT_PASSWORD_SHA2: 8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918 GRAYLOG_HTTP_BIND_ADDRESS: "0.0.0.0:9001" GRAYLOG_HTTP_EXTERNAL_URI: "http://localhost:9001/" GRAYLOG_ELASTICSEARCH_HOSTS: "http://elasticsearch:9200" GRAYLOG_MONGODB_URI: "mongodb://mongodb:27017/graylog" ports: - "5044:5044/tcp" # Beats - "5140:5140/udp" # Syslog - "5140:5140/tcp" # Syslog - "5555:5555/tcp" # RAW TCP - "5555:5555/udp" # RAW TCP - "9001:9001/tcp" # Server API - "12201:12201/tcp" # GELF TCP - "12201:12201/udp" # GELF UDP - "13301:13301/tcp" # Forwarder data - "13302:13302/tcp" # Forwarder config volumes: esdata:
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Install Monolog on your project

Monolog bundle integrates Monolog into Symfony, it comes with many handlers like slack, elasticsearch and Graylog

composer require symfony/monolog-bundle
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Install the gelf implementation in php

composer require graylog2/gelf-php
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Now go to the /config/packages/dev/monolog.yaml

As you can see the there are 2 handlers:
- "streams" write all logs into a file
- "console" allow you to see logs on your terminal when you execute a task with the option -vvv

Now add the new handler to send all logs in graylog:

monolog: handlers: # [...] graylog: type: gelf publisher: hostname: "%env(GRAYLOG_HOST)%" port: "%env(GRAYLOG_PORT)%" level: debug
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Then add this 2 new env variable in your .env file

#[...] GRAYLOG_HOST=localhost GRAYLOG_PORT=12201
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Configure a new input in graylog

Go to http://localhost:9001/ then connect you with the credentials: admin/admin

Then go to System/Inputs, select "GELF UDP" then click on launch input.

Test

Go to your website then go back to your graylog dashboard, now you can see all the logs :)

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