gitlab-org--gitlab-foss/db/migrate/20151229102248_influxdb_udp...

class InfluxdbUdpPortSetting < ActiveRecord::Migration[4.2]
  def change
    add_column :application_settings, :metrics_port, :integer, default: 8089
  end
end
Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 07:27:31 +00:00			`class InfluxdbUdpPortSetting < ActiveRecord::Migration[4.2]`
Write to InfluxDB directly via UDP This removes the need for Sidekiq and any overhead/problems introduced by TCP. There are a few things to take into account: 1. When writing data to InfluxDB you may still get an error if the server becomes unavailable during the write. Because of this we're catching all exceptions and just ignore them (for now). 2. Writing via UDP apparently requires the timestamp to be in nanoseconds. Without this data either isn't written properly. 3. Due to the restrictions on UDP buffer sizes we're writing metrics one by one, instead of writing all of them at once. 2015-12-29 12:40:42 +00:00			`def change`
			`add_column :application_settings, :metrics_port, :integer, default: 8089`
			`end`
			`end`