Nginx(LTSV log) -> fluentd -> (MongoDB and GrowthForecast)

default.rb

%w(fluent-plugin-mongo fluent-plugin-growthforecast).each do |pkg|
  gem_package pkg do
    gem_binary '/usr/lib/fluent/ruby/bin/fluent-gem'
    action :install
  end
end

td-agent.conf

<source>
  type tail
  format ltsv
  time_format %d/%b/%Y:%H:%M:%S %z
  path /var/www/vhosts/masutaka.net/logs/access.log
  tag nginx.access.masutaka.net
  pos_file /var/log/td-agent/nginx.masutaka.net.pos
</source>

<match nginx.access.**>
  type copy
  <store>
    type mongo
    host localhost
    database fluent
    collection nginx
  </store>
  <store>
    type growthforecast
    gfapi_url http://localhost:5125/api/
    service nginx
    section response
    name_keys reqtime
  </store>
</match>

http://masutaka.net/chalow/2013-08-15-1.html