eh

.gitignore

@@ -1,2 +1,2 @@
 .vagrant
-tmp
+pki

README.md

@@ -1,21 +1,22 @@
 # Graylog Demo
 
 
-This is a demonstration of Graylog, a centralized log management system featuring a shell provisioned CentOS 7 Vagrant box. To illustrate various log collection methods `httpd`, `rsyslog` and `docker` are installed and a simple WordPress instance is deployed via Docker Compose. Log collection incorporates td-agent (a version of Fluentd) to ship logs into a Graylog instance from containers, the syslog, and arbitrary filesystem logs.
+This is a demonstration of Graylog, a centralized log management system featuring a shell provisioned CentOS 7 Vagrant box. To illustrate various log collection methods `httpd`, `rsyslog` and `docker` are installed and a simple WordPress instance is deployed via Docker Compose. Log collection incorporates Fluentd to ship logs into a Graylog instance from containers, the syslog, and arbitrary filesystem logs.
 
 This demonstration assumes you are familiar with using Vagrant + VirtualBox to automate the installation of virtual machines, although you can reference the Vagrantfile's shell provisioning sections to manually set up a system if you so desire. Please install these prerequisites before attempting the quick start below.
 
 #### Notes about setup
-- This demonstration uses Traefik for some routing and the [xip.io](http://xip.io/) wildcard DNS service. If DNS fails to resolve for whatever reason you may want to set the domains to the IP inside your operating system's hosts file, e.g.
+- This demonstration uses Traefik for routing and the [xip.io](http://xip.io/) wildcard DNS service. If DNS fails to resolve for whatever reason you may want to set the domains to the IP inside your operating system's hosts file, e.g.
 
 ```
 172.28.128.30   traefik.172.28.128.30.xip.io
 172.28.128.30   graylog.172.28.128.30.xip.io
+172.28.128.30   wordpress.172.28.128.30.xip.io
 ```
 
-- Vagrant will provision two virtual machines with two consecutive private Class B addresses (starting from `172.28.128.30`). If you would like to change this base IP address to something different you will need to look through the project and find various references. Unfortunately, this is not a simple variable you can set for the entire project.
+- Vagrant will provision a virtual machine with a static private Class B address (specifically `172.28.128.30`). If you would like to change this IP address to something different you will need to change the `PRIVATE_NET_IP` variable and the scripted API calls in the `Vagrantfile`. You'll also need to modify the few wildcard DNS references to it in the two `docker-compose.yml` files.
 
-- Vagrant is set to allocate 4 cores and 4 GB of RAM per machine (this is 8 cores / 8 GB of memory total) you may need to adjust this for your machine if necessary.
+- Vagrant is set to allocate 4 cores and 4 GB of RAM, you may need to adjust this for your machine if necessary.
 
 - After deploying, Graylog takes the longest to become available and it may take 30 seconds to a few minutes to bring it up depending on your machine.
 
@@ -25,7 +26,7 @@ This demonstration assumes you are familiar with using Vagrant + VirtualBox to a
 
 
 ## Quick Start
-_This section assumes you will be using the default `172.28.128.30` and `172.28.128.31` IP addresses_
+_This section assumes you will be using the default `172.28.128.30` IP address_
 1. Clone the repository and navigate inside its directory
 2. Create and provision the VM using `vagrant up`
 3. Navigate to [http://graylog.172.28.128.30.xip.io:8080/](http://graylog.172.28.128.30.xip.io:8080/)
@@ -35,13 +36,13 @@ _This section assumes you will be using the default `172.28.128.30` and `172.28.
 7. Press the start button on the top right to start updating the feed every second
 
 #### Docker Test
-- Generate Docker logs by simply navigating to the WordPress install page: [http://172.28.128.31:8080](http://172.28.128.31:8080/wp-admin/install.php)
+- Generate Docker logs by simply navigating to the WordPress install page [http://wordpress.172.28.128.30.xip.io:8080/](http://wordpress.172.28.128.30.xip.io:8080/)
 
 #### File Test
-- Collect logs from Apache's `access_log` file by going to [http://172.28.128.31/](http://172.28.128.31/)
+- Collect logs from Apache's `access_log` file by going to [http://172.28.128.30/](http://172.28.128.30/)
 
 #### Syslog Test
-1. Go back to the terminal inside the project's directory and type `vagrant ssh systems` or `vagrant ssh graylog`
+1. Go back to the terminal inside the project's directory and type `vagrant ssh`
 2. You can test Syslog collection with `logger` e.g. `logger -t test Hello world` (or just wait for some to appear)
 
 ### Copyrights and Licenses

Vagrantfile

@@ -1,178 +1,155 @@
 # vi: set ft=ruby :
 
-PRIVATE_NET_IP = "172.28.128."
+PRIVATE_NET_IP = "172.28.128.30"
 
 Vagrant.configure("2") do |config|
+  config.vm.box = "centos/7"
+  config.vm.network "private_network", ip: PRIVATE_NET_IP
+  config.vm.synced_folder ".", "/vagrant", type: "nfs"
 
-  vmservers = ["graylog", "systems"]
+  config.vm.provider "virtualbox" do |vbox|
-  last_octet = 30
+    vbox.memory = 4096
-
+    vbox.cpus = 4
-  vmservers.each do |server|
-    config.vm.define "#{server}" do |node|
-      node.vm.box = "centos/7"
-      node.vm.hostname = "#{server}"
-      node.vm.network "private_network", ip: PRIVATE_NET_IP + last_octet.to_s
-      node.vm.synced_folder ".", "/vagrant", type: "nfs"
-      last_octet = last_octet + 1
-
-      node.vm.provider "virtualbox" do |vbox|
-        vbox.memory = 4096
-        vbox.cpus = 4
-      end
-
-      # Common provision
-      node.vm.provision "shell", inline: <<-SHELL
-
-        # Set SELinux to permissive
-        setenforce 0
-        sed -i "s/SELINUX=enforcing/SELINUX=permissive/g" /etc/selinux/config
-
-        # Import GPG keys
-        rpm --import \
-          /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 \
-          https://download.docker.com/linux/centos/gpg \
-          http://download.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7 \
-          https://packages.treasuredata.com/GPG-KEY-td-agent
-
-        # Install Docker Community Edition
-        yum-config-manager --add-repo \
-            https://download.docker.com/linux/centos/docker-ce.repo
-        yum install -y docker-ce docker-ce-cli containerd.io
-        systemctl start docker
-        systemctl -q enable docker
-        usermod -aG docker vagrant
-
-        # Convenience
-        yum install -y vim
-
-        # Install rsyslog
-        yum install -y rsyslog
-        systemctl start rsyslog
-        systemctl -q enable rsyslog
-
-        # Add rsyslog forwarding option if it does not exist
-        if ! grep -q "127.0.0.1:5140" /etc/rsyslog.conf; then
-          echo "*.* @127.0.0.1:5140" >> /etc/rsyslog.conf
-          systemctl restart rsyslog
-        fi
-
-        # Setup TLS
-        if [ ! -f /vagrant/tmp/ca_key.pem ]; then
-          echo "Generating TLS certificates..."
-          cd /vagrant/tmp
-          openssl req -newkey rsa:4096 \
-                      -x509 \
-                      -sha256 \
-                      -days 3650 \
-                      -nodes \
-                      -out ca_cert.pem \
-                      -keyout ca_key.pem \
-                      -subj "/C=US/ST=Local/L=Local/O=Org/OU=IT/CN=example.com" \
-                      2> /dev/null
-        fi
-
-        # Install td-agent
-        cp /vagrant/td-agent.repo /etc/yum.repos.d/
-        yum check-update
-        yum install -y td-agent
-        td-agent-gem install fluent-plugin-gelf-hs gelf
-        systemctl -q enable td-agent
-
-      SHELL
-
-      # Commmon provision: install docker-compose
-      node.vm.provision "shell", path: "install-compose.sh"
-
-      # Graylog specific provision
-      if server == "graylog"
-        node.vm.provision "shell", inline: <<-SHELL
-
-          cp /vagrant/td-agent-server.conf /etc/td-agent/td-agent.conf
-          mkdir -p /var/log/graylog_buffer
-          chown -R td-agent:td-agent /var/log/graylog_buffer
-          systemctl restart td-agent
-
-          # Install jq
-          yum install -y epel-release
-          yum install -y jq
-
-          # Start Graylog
-          cd /vagrant
-          /usr/local/bin/docker-compose up -d 2> /dev/null
-
-          # Wait 120 seconds for Graylog to come online
-          SECONDS=0
-          while true
-          do
-            GRAYLOG_STATE=$(
-              docker inspect vagrant_graylog_1 \
-                | jq --raw-output '.[] | .State.Health.Status')
-
-            if [[ "$GRAYLOG_STATE" == "healthy" ]]; then
-              echo "Graylog is available."
-              sleep 5
-              break
-            elif [[ "$GRAYLOG_STATE" != "starting" ]]; then
-              echo "Something is wrong with Graylog. Aborting."
-              exit 1
-            elif [[ $SECONDS -le 120 ]]; then
-              echo "Waiting for Graylog ($SECONDS/120 seconds)"
-              sleep 10
-            else
-              echo "Waiting on Graylog timed out. Aborting."
-              exit 1
-            fi
-          done
-
-          # Check for existing GELF TCP Input
-          INPUTSTATE=$(
-            curl -s -X GET \
-                -H "Content-Type: application/json" \
-                -H "X-Requested-By: cli" \
-                -u admin:admin \
-                "http://graylog.172.28.128.30.xip.io:8080/api/system/inputstates")
-
-          INPUT_TYPES=$(echo $INPUTSTATE | jq --raw-output '.states | .[] | .message_input.type')
-
-          for TYPE in $INPUT_TYPES; do
-            if [[ "$TYPE" == "org.graylog2.inputs.gelf.tcp.GELFTCPInput" ]]; then
-              echo "Found GELF TCP input in Graylog, aborting input installation."
-              exit
-            fi
-          done
-
-          # Install GELF TCP Input
-          curl -i -s -X POST \
-              -H "Content-Type: application/json" \
-              -H "X-Requested-By: cli" \
-              -u admin:admin \
-              "http://graylog.172.28.128.30.xip.io:8080/api/system/inputs" \
-              -d @GELFTCPInput.json
-
-        SHELL
-
-      elsif server == "systems"
-        node.vm.provision "shell", inline: <<-SHELL
-
-          # Install apache
-          yum install -y httpd
-          systemctl start httpd
-          systemctl -q enable httpd
-
-          # Configure td-agent
-          cp /vagrant/td-agent.conf /etc/td-agent/td-agent.conf
-          mkdir -p /var/log/containers /var/log/fluentd_buffer
-          chown -R td-agent:td-agent /var/log/containers /var/log/fluentd_buffer
-          chmod -R 755 /var/log
-          systemctl restart td-agent
-
-          # Bring up WordPress test containers
-          cd /vagrant/wordpress
-          /usr/local/bin/docker-compose up -d 2> /dev/null
-
-        SHELL
-
-      end
-    end
   end
+
+  config.vm.provision "shell", inline: <<-SHELL
+
+    # Set SELinux to permissive
+    setenforce 0
+    sed -i "s/SELINUX=enforcing/SELINUX=permissive/g" /etc/selinux/config
+
+    # Import GPG keys
+    curl -s https://download.docker.com/linux/centos/gpg -o docker-key
+    rpm --import docker-key \
+      /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 \
+      http://download.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7
+
+    # Install Docker Community Edition
+    yum-config-manager --add-repo \
+        https://download.docker.com/linux/centos/docker-ce.repo
+    yum install -y docker-ce docker-ce-cli containerd.io
+    systemctl start docker
+    systemctl -q enable docker
+    usermod -aG docker vagrant
+
+    # Convenience
+    yum install -y vim
+
+    # Install jq
+    yum install -y epel-release
+    yum install -y jq
+
+    # Install apache
+    yum install -y httpd
+    systemctl start httpd
+    systemctl -q enable httpd
+
+    # Install rsyslog
+    yum install -y rsyslog
+    systemctl start rsyslog
+    systemctl -q enable rsyslog
+
+    # Add rsyslog forwarding option if it does not exist
+    if ! grep -q "127.0.0.1:5140" /etc/rsyslog.conf; then
+      echo "*.* @127.0.0.1:5140" >> /etc/rsyslog.conf
+      systemctl restart rsyslog
+    fi
+
+  SHELL
+
+  # Install newest docker-compose
+  config.vm.provision "shell", path: "install-compose.sh"
+
+  # Start compose services and add default input
+  config.vm.provision "shell", inline: <<-SHELL
+
+    # Remove old keys and create directories
+    mkdir -p /vagrant/pki
+    rm -r /vagrant/pki/*
+    mkdir -p /vagrant/pki/{fluentd,graylog}
+
+    # Generate and install TLS keys
+    cd /vagrant/pki
+
+    # Generate Graylog's CA
+    openssl genrsa -out rootCA.key 4096 2> /dev/null
+    openssl req -x509 -new -nodes -key rootCA.key -sha256 -days 1024 \
+        -out rootCA.crt -subj "/C=US/ST=GA/O=MyOrg/CN=localhost" 2> /dev/null
+
+    # Generate Fluentd's keys
+    openssl genrsa -out fluentd.key 4096 2> /dev/null
+    openssl req -new -sha256 -key fluentd.key \
+        -subj "/C=US/ST=GA/O=MyOrg/CN=localhost" -out fluentd.csr 2> /dev/null
+
+    # Sign Fluentd's certificate
+    openssl x509 -req -in fluentd.csr -CA rootCA.crt -CAkey rootCA.key \
+        -CAcreateserial -out fluentd-signed.crt -days 500 -sha256 2> /dev/null
+
+    mv fluentd*.* fluentd/
+    mv root*.* graylog/
+
+    # Bring up containers
+    cd /vagrant
+    /usr/local/bin/docker-compose up -d 2> /dev/null
+    cd /vagrant/wordpress
+    /usr/local/bin/docker-compose up -d 2> /dev/null
+    cd /vagrant
+
+    # Wait 120 seconds for Graylog to come online
+    INSTALL_INPUT=0
+    SECONDS=0
+    while true
+    do
+      GRAYLOG_STATE=$(
+        docker inspect vagrant_graylog_1 \
+          | jq --raw-output '.[] | .State.Health.Status')
+
+      if [[ "$GRAYLOG_STATE" == "healthy" ]]; then
+        echo "Graylog is available."
+        INSTALL_INPUT=1
+        sleep 5
+        break
+      elif [[ "$GRAYLOG_STATE" != "starting" ]]; then
+        echo "Something is wrong with Graylog. Aborting."
+        break
+      elif [[ $SECONDS -le 120 ]]; then
+        echo "Waiting for Graylog ($SECONDS/120 seconds)"
+        sleep 10
+      else
+        echo "Waiting on Graylog timed out. Aborting."
+        break
+      fi
+    done
+
+    # Check for existing GELF TCP Input
+    INPUTSTATE=$(
+      curl -s -X GET \
+          -H "Content-Type: application/json" \
+          -H "X-Requested-By: cli" \
+          -u admin:admin \
+          "http://graylog.172.28.128.30.xip.io:8080/api/system/inputstates")
+
+    INPUT_TYPES=$(echo $INPUTSTATE | jq --raw-output '.states | .[] | .message_input.type')
+
+    for TYPE in $INPUT_TYPES; do
+      if [[ "$TYPE" == "org.graylog2.inputs.gelf.tcp.GELFTCPInput" ]]; then
+        echo "Found GELF TCP input in Graylog, aborting input installation."
+        INPUT_INSTALL=1
+        break
+      fi
+    done
+
+    # Install GELF TCP Input
+    if [[ $INSTALL_INPUT -eq 1 ]]; then
+      echo "Installing GELF TCP input"
+      curl -i -s -X POST \
+          -H "Content-Type: application/json" \
+          -H "X-Requested-By: cli" \
+          -u admin:admin \
+          "http://graylog.172.28.128.30.xip.io:8080/api/system/inputs" \
+          -d @GELFTCPInput.json
+    fi
+
+  SHELL
+
 end

docker-compose.yml

@@ -3,7 +3,7 @@ version: '3.7'
 services:
 
   traefik:
-    image: traefik:2.2.1
+    image: traefik:2.1.4
     restart: always
     networks:
       - traefik-net
@@ -24,27 +24,28 @@ services:
       - "traefik.enable=true"
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
-    logging:
+
-      driver: "fluentd"
+  fluentd:
-      options:
+    build: ./fluentd
-       fluentd-address: "tcp://127.0.0.1:24224"
+    restart: always
-       fluentd-async-connect: "true"
+    volumes:
-       tag: traefik
+      - /var/log:/var/log/hostlogs
+      - /vagrant/pki/fluentd:/fluentd/etc/pki
+    networks:
+      - graylog
+    ports:
+      - 24224:24224
+      - 24224:24224/udp
+      - 5140:5140/udp
 
   mongo:
-    image: mongo:4.2.8
+    image: mongo:4.2.2
     restart: always
     networks:
       - graylog
-    logging:
-      driver: "fluentd"
-      options:
-       fluentd-address: "tcp://127.0.0.1:24224"
-       fluentd-async-connect: "true"
-       tag: graylog.db
 
   elasticsearch:
-    image: elasticsearch:6.8.10
+    image: elasticsearch:6.8.6
     restart: always
     environment:
       - http:host=0.0.0.0
@@ -57,15 +58,9 @@ services:
         hard: -1
     networks:
       - graylog
-    logging:
-      driver: "fluentd"
-      options:
-       fluentd-address: "tcp://127.0.0.1:24224"
-       fluentd-async-connect: "true"
-       tag: graylog.elasticsearch
 
   graylog:
-    image: graylog/graylog:3.3.2
+    image: graylog/graylog:3.2.2
     restart: always
     environment:
       - GRAYLOG_PASSWORD_SECRET=LongerPassword01
@@ -94,12 +89,8 @@ services:
       - 12201:12201
       # GELF UDP
       - 12201:12201/udp
-    logging:
+    volumes:
-      driver: "fluentd"
+      - /vagrant/pki/graylog:/usr/share/graylog/pki
-      options:
-       fluentd-address: "tcp://127.0.0.1:24224"
-       fluentd-async-connect: "true"
-       tag: graylog
 
 networks:
   traefik-net:

fluentd/Dockerfile

@@ -0,0 +1,10 @@
+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 uninstall gelf -v 3.1.0
+RUN gem install gelf -v 3.0.0
+RUN gem install fluent-plugin-rewrite-tag-filter
+RUN gem install fluent-plugin-gelf-hs
+COPY fluent.conf /fluentd/etc/

fluentd/fluent.conf

@@ -0,0 +1,52 @@
+<source>
+  @type forward
+  port 24224
+</source>
+
+<source>
+  @type syslog
+  port 5140
+  tag system
+</source>
+
+<source>
+  @type tail
+  path /var/log/hostlogs/httpd/access_log
+  pos_file /var/log/hostlogs/httpd/access_log.pos
+  tag httpd.access
+  <parse>
+    @type apache2
+  </parse>
+</source>
+
+<match devel.*>
+  @type copy
+  <store>
+    @type file
+    path /var/log/hostlogs/containers/${tag}
+    append true
+    <buffer tag>
+      timekey 5s
+      flush_mode immediate
+    </buffer>
+  </store>
+  <store>
+    @type rewrite_tag_filter
+    <rule>
+      key container_name
+      pattern /\/(.+)/
+      tag ${tag}.$1
+    </rule>
+  </store>
+</match>
+
+<match **>
+  @type gelf
+  host vagrant_graylog_1
+  port 12201
+  protocol tcp
+  tls true
+  tls_options {"cert":"/fluentd/etc/pki/fluentd-signed.crt",
+               "key":"/fluentd/etc/pki/fluentd.key"}
+  flush_interval 5s
+</match>

td-agent-server.conf

@@ -1,42 +0,0 @@
-<source>
-  @type forward
-  port 2514
-  <transport tls>
-    version TLSv1_2
-    insecure true
-    cert_path /vagrant/tmp/ca_cert.pem
-    private_key_path /vagrant/tmp/ca_key.pem
-  </transport>
-</source>
-
-<source>
-  @type forward
-  port 24224
-</source>
-
-<source>
-  @type syslog
-  port 5140
-  tag system.local
-</source>
-
-<filter httpd.access>
-  @type parser
-  key_name message
-  reserve_data true
-  <parse>
-    @type apache2
-  </parse>
-</filter>
-
-<match **>
-  @type gelf
-  protocol tcp
-  host localhost
-  port 12201
-  <buffer>
-    @type file
-    path /var/log/graylog_buffer
-    flush_interval 0s
-  </buffer>
-</match>

td-agent.conf

@@ -1,62 +0,0 @@
-<source>
-  @type forward
-  port 24224
-</source>
-
-<source>
-  @type syslog
-  port 5140
-  tag system
-</source>
-
-<source>
-  @type tail
-  path /var/log/httpd/access_log
-  pos_file /var/log/td-agent/access_log.pos
-  tag httpd.access
-  <parse>
-    @type none
-  </parse>
-</source>
-
-<match devel.*>
-  @type copy
-  <store>
-    @type file
-    path /var/log/containers/${tag}
-    append true
-    <buffer tag>
-      @type file
-      path /var/log/containers/buffer
-      flush_interval 0s
-    </buffer>
-    <format>
-      @type single_value
-      message_key log
-    </format>
-  </store>
-  <store>
-    @type rewrite_tag_filter
-    <rule>
-      key container_name
-      pattern /\/(.+)/
-      tag ${tag}.$1
-    </rule>
-  </store>
-</match>
-
-<match **>
-  @type forward
-  transport tls
-  tls_cert_path /vagrant/tmp/ca_cert.pem
-  <server>
-    name example.com
-    host 172.28.128.30
-    port 2514
-  </server>
-  <buffer>
-    @type file
-    path /var/log/fluentd_buffer
-    flush_interval 0s
-  </buffer>
-</match>

td-agent.repo

@@ -1,5 +0,0 @@
-[treasuredata]
-name=TreasureData
-baseurl=http://packages.treasuredata.com/3/redhat/$releasever/$basearch
-gpgcheck=1
-gpgkey=https://packages.treasuredata.com/GPG-KEY-td-agent

wordpress/docker-compose.yml

@@ -11,25 +11,26 @@ services:
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: Password1
       MYSQL_RANDOM_ROOT_PASSWORD: '1'
-    logging:
+    networks:
-      driver: "fluentd"
+      - default
-      options:
-       fluentd-address: "tcp://127.0.0.1:24224"
-       fluentd-async-connect: "true"
-       tag: devel.kris.db
 
   wordpress:
     depends_on:
       - db
     image: wordpress:latest
     restart: always
-    ports:
-      - 8080:80
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: Password1
       WORDPRESS_DB_NAME: wordpress
+    networks:
+      - default
+      - traefik-net
+    labels:
+      - "traefik.http.routers.wordpress.rule=Host(`wordpress.172.28.128.30.xip.io`)"
+      - "traefik.docker.network=vagrant_traefik-net"
+      - "traefik.enable=true"
     logging:
       driver: "fluentd"
       options:
@@ -37,5 +38,10 @@ services:
        fluentd-async-connect: "true"
        tag: devel.kris
 
+networks:
+  traefik-net:
+    external:
+      name: vagrant_traefik-net
+
 volumes:
   db_data: {}