Added fluentd

Reordered compose commands to bring up graylog first and
added fluentd.

Vagrantfile

@@ -26,8 +26,6 @@ Vagrant.configure("2") do |config|
     yum-config-manager --add-repo \
         https://download.docker.com/linux/centos/docker-ce.repo
     yum install -y docker-ce docker-ce-cli containerd.io
-    mkdir -p /etc/docker/
-    cp --update /vagrant/docker-daemon.json /etc/docker/daemon.json
     systemctl start docker
     systemctl -q enable docker
     usermod -aG docker vagrant
@@ -58,8 +56,8 @@ Vagrant.configure("2") do |config|
   # Start compose services
   config.vm.provision "shell", inline: <<-SHELL
     cd /vagrant
-    /usr/local/bin/docker-compose -f wordpress.yml up -d 2> /dev/null
     /usr/local/bin/docker-compose -f graylog.yml up -d 2> /dev/null
+    /usr/local/bin/docker-compose -f wordpress.yml up -d 2> /dev/null
   SHELL
 
 end

docker-daemon.json

@@ -1,6 +0,0 @@
-{
-  "log-driver": "syslog",
-  "log-opts": {
-    "syslog-address": "tcp://127.0.0.1:514"
-  }
-}

fluentd/Dockerfile

@@ -0,0 +1,9 @@
+FROM fluent/fluentd:v1.9.0-debian-1.0
+USER root
+RUN apt-get update \
+ && apt-get -y install --no-install-recommends wget \
+ && rm -rf /var/lib/apt/lists/*
+RUN gem install gelf
+RUN cd /fluentd/plugins \
+ && wget -q https://raw.githubusercontent.com/emsearcy/fluent-plugin-gelf/master/lib/fluent/plugin/out_gelf.rb
+COPY fluent.conf /fluentd/etc/

fluentd/fluent.conf

@@ -0,0 +1,11 @@
+<source>
+  @type forward
+  port 24224
+</source>
+
+<match **>
+  @type gelf
+  host vagrant_graylog_1
+  port 12201
+  flush_interval 5s
+</match>

graylog.yml

@@ -1,6 +1,16 @@
 version: '3.7'
 
 services:
+
+  fluentd:
+    build: ./fluentd
+    restart: always
+    networks:
+      - graylog
+    ports:
+      - 24224:24224
+      - 24224:24224/udp
+
   mongo:
     image: mongo:4.2.2
     restart: always

wordpress.yml

@@ -24,5 +24,10 @@ services:
        WORDPRESS_DB_USER: wordpress
        WORDPRESS_DB_PASSWORD: Password1
        WORDPRESS_DB_NAME: wordpress
+     logging:
+       driver: "fluentd"
+       options:
+        fluentd-address: "tcp://127.0.0.1:24224"
+
 volumes:
     db_data: {}