which psql
/usr/local/bin/psql

# Decide a name for your application and export it as an environment variable
# (In this case, the name is ruby-heroku-datadog)
export APPNAME=ruby-heroku-datadog

# Get the sample application code
git clone https://github.com/heroku/ruby-getting-started.git
cd ruby-getting-started

# Login into Heroku
heroku login

# Create a new application
heroku create -a $APPNAME

# Deploy to Heroku
git push heroku main

# Open the application to check that it works
heroku open -a $APPNAME

# HEROKU_APP_NAME 환경 변수로 자동 지정하도록 Heroku Labs Dyno Metadata를 활성화
heroku labs:enable runtime-dyno-metadata -a $APPNAME

# Datadog에서 호스트 이름을 appname.dynotype.dynonumber로 정해 메트릭 연속성 확보
heroku config:add DD_DYNO_HOST=true

# 사이트 설정(예: us5.datadoghq.com) 
heroku config:add DD_SITE=$DD_SITE

# 다음 빌드팩을 추가하고 Datadog API 키 설정
heroku buildpacks:add --index 1 https://github.com/DataDog/heroku-buildpack-datadog.git
heroku config:add DD_API_KEY=$DD_API_KEY

# Heroku에 배포해 강제 다시 빌드
git commit --allow-empty -m "Rebuild slug"
git push heroku main

[...]
  API Keys status
  ===============
    API key ending with 68306: API Key valid

[...]

heroku addons -a $APPNAME

Add-on                                         Plan       Price  State
─────────────────────────────────────────────  ─────────  ─────  ───────
heroku-postgresql (postgresql-infinite-14462)  hobby-dev  free   created
 └─ as DATABASE

The table above shows add-ons and the attachments to the current app (ruby-heroku-datadog) or other apps.

heroku run rake db:migrate -a $APPNAME

Running `rake db:migrate` attached to terminal... up, run.3559
Migrating to CreateWidgets (20140707111715)
== 20140707111715 CreateWidgets: migrating ====================================
-- create_table(:widgets)
   -> 0.0244s
== 20140707111715 CreateWidgets: migrated (0.0247s) ===========================

heroku pg:credentials:url DATABASE -a $APPNAME

cd ruby-getting-started
# Create the folder for the integrations configuration in your application code
mkdir -p datadog/conf.d/

init_config:

instances:
  - host: <YOUR HOSTNAME>
    port: <YOUR PORT>
    username: <YOUR USERNAME>
    password: <YOUR PASSWORD>
    dbname: <YOUR DBNAME>
    ssl: True

#!/usr/bin/env bash

# Update the Postgres configuration from above using the Heroku application environment variable
if [ -n "$DATABASE_URL" ]; then
  POSTGREGEX='^postgres://([^:]+):([^@]+)@([^:]+):([^/]+)/(.*)$'
  if [[ $DATABASE_URL =~ $POSTGREGEX ]]; then
    sed -i "s/<YOUR HOSTNAME>/${BASH_REMATCH[3]}/" "$DD_CONF_DIR/conf.d/postgres.d/conf.yaml"
    sed -i "s/<YOUR USERNAME>/${BASH_REMATCH[1]}/" "$DD_CONF_DIR/conf.d/postgres.d/conf.yaml"
    sed -i "s/<YOUR PASSWORD>/${BASH_REMATCH[2]}/" "$DD_CONF_DIR/conf.d/postgres.d/conf.yaml"
    sed -i "s/<YOUR PORT>/${BASH_REMATCH[4]}/" "$DD_CONF_DIR/conf.d/postgres.d/conf.yaml"
    sed -i "s/<YOUR DBNAME>/${BASH_REMATCH[5]}/" "$DD_CONF_DIR/conf.d/postgres.d/conf.yaml"
  fi
fi

git add .
git commit -m "Enable postgres integration"
git push heroku main

[...]

=========
Collector
=========

  Running Checks
  ==============

[...]

  postgres (5.4.0)
  ----------------
    Instance ID: postgres:e07ef94b907fe733 [OK]
    Configuration Source: file:/app/.apt/etc/datadog-agent/conf.d/postgres.d/conf.yaml
    Total Runs: 9
    Metric Samples: Last Run: 15, Total: 135
    Events: Last Run: 0, Total: 0
    Service Checks: Last Run: 1, Total: 9
    Average Execution Time : 102ms
    Last Execution Date : 2021-05-11 14:14:34 UTC (1620742474000)
    Last Successful Execution Date : 2021-05-11 14:14:34 UTC (1620742474000)
    metadata:
      version.major: 13
      version.minor: 2
      version.patch: 0
      version.raw: 13.2 (Ubuntu 13.2-1.pgdg20.04+1)
      version.scheme: semver

[...]

heroku addons:create heroku-redis:hobby-dev

heroku addons:info REDIS

=== redis-cylindrical-59589
Attachments:  ruby-heroku-datadog::REDIS
Installed at: Wed Nov 17 2021 14:14:13 GMT+0100 (Central European Standard Time)
Owning app:   ruby-heroku-datadog
Plan:         heroku-redis:hobby-dev
Price:        free
State:        created

heroku config -a $APPNAME | grep REDIS_URL

init_config:

instances:
  - host: <YOUR_REDIS_HOST>
    password: <YOUR_REDIS_PASSWORD>
    port: <YOUR_REDIS_PORT>

#!/usr/bin/env bash

# Update the Redis configuration from above using the Heroku application environment variable
if [ -n "$REDIS_URL" ]; then
  REDISREGEX='rediss?://([^:]*):([^@]+)@([^:]+):([^/]+)$'
  if [[ $REDIS_URL =~ $REDISREGEX ]]; then
    sed -i "s/<YOUR_REDIS_HOST>/${BASH_REMATCH[3]}/" "$DD_CONF_DIR/conf.d/redisdb.d/conf.yaml"
    sed -i "s/<YOUR_REDIS_PASSWORD>/${BASH_REMATCH[2]}/" "$DD_CONF_DIR/conf.d/redisdb.d/conf.yaml"
    sed -i "s/<YOUR_REDIS_PORT>/${BASH_REMATCH[4]}/" "$DD_CONF_DIR/conf.d/redisdb.d/conf.yaml"
  fi
fi

# Deploy to Heroku
git add .
git commit -m "Enable redis integration"
git push heroku main

[...]

=========
Collector
=========

  Running Checks
  ==============

[...]

  redisdb (4.1.0)
  ---------------
    Instance ID: redisdb:eb3a3807075f89f0 [OK]
    Configuration Source: file:/app/.apt/etc/datadog-agent/conf.d/redisdb.d/conf.yaml
    Total Runs: 3
    Metric Samples: Last Run: 45, Total: 135
    Events: Last Run: 0, Total: 0
    Service Checks: Last Run: 1, Total: 3
    Average Execution Time : 6ms
    Last Execution Date : 2021-11-17 13:56:17 UTC (1637157377000)
    Last Successful Execution Date : 2021-11-17 13:56:17 UTC (1637157377000)
    metadata:
      version.major: 6
      version.minor: 2
      version.patch: 3
      version.raw: 6.2.3
      version.scheme: semver

[...]

gem install dogstatsd-ruby

    require 'datadog/statsd' # gem 'dogstatsd-ruby'

    Sidekiq::Pro.dogstatsd = ->{ Datadog::Statsd.new('localhost', 8125, namespace:'sidekiq') }

    Sidekiq.configure_server do |config|
      config.server_middleware do |chain|
        require 'sidekiq/middleware/server/statsd'
        chain.add Sidekiq::Middleware::Server::Statsd
      end
    end

      Sidekiq.configure_server do |config|
        # history is captured every 30 seconds by default
        config.retain_history(30)
      end

cat << 'EOF' >> "$DATADOG_CONF"

dogstatsd_mapper_profiles:
  - name: sidekiq
    prefix: "sidekiq."
    mappings:
      - match: 'sidekiq\.sidekiq\.(.*)'
        match_type: "regex"
        name: "sidekiq.$1"
      - match: 'sidekiq\.jobs\.(.*)\.perform'
        name: "sidekiq.jobs.perform"
        match_type: "regex"
        tags:
          worker: "$1"
      - match: 'sidekiq\.jobs\.(.*)\.(count|success|failure)'
        name: "sidekiq.jobs.worker.$2"
        match_type: "regex"
        tags:
          worker: "$1"
EOF

git add .
git commit -m "Enable sidekiq integration"
git push heroku main

heroku addons:create memcachedcloud:30

heroku addons | grep -A2 memcachedcloud

memcachedcloud (memcachedcloud-fluffy-34783)   30         free   created
 └─ as MEMCACHEDCLOUD

heroku config | grep MEMCACHEDCLOUD

instances:
  - url: <YOUR_MCACHE_HOST>
    port: <YOUR_MCACHE_PORT>
    username: <YOUR_MCACHE_USERNAME>
    password: <YOUR_MCACHE_PASSWORD>

#!/usr/bin/env bash

# Update the Memcached configuration from above using the Heroku application environment variable
if [ -n "$MEMCACHEDCLOUD_SERVERS" ]; then
  MCACHEREGEX='([^:]+):([^/]+)$'
  if [[ $MEMCACHEDCLOUD_SERVERS =~ $MCACHEREGEX ]]; then
    sed -i "s/<YOUR_MCACHE_HOST>/${BASH_REMATCH[1]}/" "$DD_CONF_DIR/conf.d/mcache.d/conf.yaml"
    sed -i "s/<YOUR_MCACHE_PORT>/${BASH_REMATCH[2]}/" "$DD_CONF_DIR/conf.d/mcache.d/conf.yaml"
  fi
  sed -i "s/<YOUR_MCACHE_USERNAME>/${MEMCACHEDCLOUD_USERNAME}/" "$DD_CONF_DIR/conf.d/mcache.d/conf.yaml"
  sed -i "s/<YOUR_MCACHE_PASSWORD>/${MEMCACHEDCLOUD_PASSWORD}/" "$DD_CONF_DIR/conf.d/mcache.d/conf.yaml"
fi

git add .
git commit -m "Enable memcached integration"
git push heroku main

[...]

=========
Collector
=========

  Running Checks
  ==============

[...]

  mcache (2.0.0)
  --------------
    Instance ID: mcache:ca47ee7a0c236107 [OK]
    Configuration Source: file:/app/.apt/etc/datadog-agent/conf.d/mcache.d/conf.yaml
    Total Runs: 2
    Metric Samples: Last Run: 27, Total: 54
    Events: Last Run: 0, Total: 0
    Service Checks: Last Run: 1, Total: 2
    Average Execution Time : 9ms
    Last Execution Date : 2021-11-18 12:28:45 UTC (1637238525000)
    Last Successful Execution Date : 2021-11-18 12:28:45 UTC (1637238525000)
    metadata:
      version.major: 1
      version.minor: 4
      version.patch: 17
      version.raw: 1.4.17
      version.scheme: semver

[...]

cd ruby-getting-started

source 'https://rubygems.org'
gem 'ddtrace', require: 'ddtrace/auto_instrument'

bundle install

# Set the environment of your application
heroku config:add DD_ENV=production -a $APPNAME

# Set the version of your application
heroku config:add DD_VERSION=0.1 -a $APPNAME

# Set the service of your application
heroku config:add DD_SERVICE=$APPNAME -a $APPNAME

git add .
git commit -m "Enable distributed tracing"
git push heroku main

remote:        Download Yarn at https://yarnpkg.com/en/docs/install
remote:        E, [2021-05-14T10:21:27.664244 #478] ERROR -- ddtrace: [ddtrace] (/tmp/build_d5cedb1c/vendor/bundle/ruby/2.6.0/gems/ddtrace-0.48.0/lib/ddtrace/transport/http/client.rb:35:in `rescue in send_request') Internal error during HTTP transport request. Cause: Failed to open TCP connection to 127.0.0.1:8126 (Connection refused - connect(2) for "127.0.0.1" port 8126) Location: /tmp/build_d5cedb1c/vendor/ruby-2.6.6/lib/ruby/2.6.0/net/http.rb:949:in `rescue in block in connect'

[...]

=========
APM Agent
=========
  Status: Running
  Pid: 54
  Uptime: 85 seconds
  Mem alloc: 13,971,888 bytes
  Hostname: ruby-heroku-datadog.web.1
  Receiver: localhost:8126
  Endpoints:
    https://trace.agent.datadoghq.com

  Receiver (previous minute)
  ==========================
    From ruby 2.6.6 (ruby-x86_64-linux), client 0.48.0
      Traces received: 43 (55,431 bytes)
      Spans received: 129

    Default priority sampling rate: 100.0%
    Priority sampling rate for 'service:ruby-heroku-datadog,env:': 100.0%
    Priority sampling rate for 'service:ruby-heroku-datadog,env:production': 100.0%

  Writer (previous minute)
  ========================
    Traces: 0 payloads, 0 traces, 0 events, 0 bytes
    Stats: 0 payloads, 0 stats buckets, 0 bytes

[...]

cd ruby-getting-started

gem 'lograge'

bundle install

Rails.application.configure do
  # Lograge config
  config.lograge.enabled = true

  # JSON 형식 로그인을 지정
  config.lograge.formatter = Lograge::Formatters::Json.new

  ## 로그 색상화 비활성화
  config.colorize_logging = false

  # 로그를 STDOUT로 설정
  config.lograge.logger = ActiveSupport::Logger.new(STDOUT)

  config.lograge.custom_options = lambda do |event|
    # 현재 스레드에서 트레이스 정보를 가져옴
    correlation = Datadog::Tracing.correlation

    {
      # 로그 출력에 ID를 태그로 추가
      :dd => {
        # JSON 직렬화 중 정확성을 보장하기 위해 큰 수에 문자열을 사용
        :trace_id => correlation.trace_id.to_s,
        :span_id => correlation.span_id.to_s,
        :env => correlation.env.to_s,
        :service => correlation.service.to_s,
        :version => correlation.version.to_s
      },
      :ddsource => ["ruby"],
      :params => event.payload[:params].reject { |k| %w(controller action).include? k }
    }
  end
end

git add .
git commit -m "Add lograge"
git push heroku main

export APPNAME=<YOUR_APPLICATION_NAME>
export DD_ENV=<YOUR_APPLICATION_ENVIRONMENT> # example: production, staging
export DD_SERVICE=<YOUR_SERVICE_NAME>

heroku drains:add "https://http-intake.logs.datadoghq.com/api/v2/logs?dd-api-key=$DD_API_KEY&ddsource=heroku&env=$DD_ENV&service=$DD_SERVICE&host=${APPNAME}.web.1" -a $APPNAME

heroku labs:enable log-runtime-metrics -a $APPNAME

# Restart your application
heroku restart -a $APPNAME

@heroku.cpu.1m
@heroku.cpu.5m
@heroku.cpu.15m
@heroku.memory.cache
@heroku.memory.quota
@heroku.memory.rss
@heroku.memory.swap
@heroku.memory.total

heroku ps:exec -a $APPNAME

# Establishing credentials... done
# Connecting to web.1 on ⬢ ruby-heroku-datadog...
# DD_API_KEY environment variable not set. Run: heroku config:add DD_API_KEY=<your API key>
#The Datadog Agent has been disabled. Unset the DISABLE_DATADOG_AGENT or set missing environment variables.

~ $

~ $ agent-wrapper status

Getting the status from the agent.

===============
Agent (v7.27.0)
===============

  Status date: 2021-04-30 10:49:50.692 UTC (1619779790692)
  Agent start: 2021-04-30 10:32:54.713 UTC (1619778774713)
  Pid: 52
  Go Version: go1.14.12
  Python Version: 3.8.5
  Build arch: amd64
  Agent flavor: agent
  Check Runners: 4
  Log File: /app/.apt/var/log/datadog/datadog.log
  Log Level: info

[...]