A simple output which prints to the STDOUT of the shell running Logstash. This output can be quite convenient when debugging plugin configurations, by allowing instant access to the event data after it has passed through the inputs and filters.
For example, the following output configuration, in conjunction with the
Logstash -e command-line flag, will allow you to see the results
of your event pipeline for quick iteration.
output {
stdout {}
}
Useful codecs include:
rubydebug: outputs event data using the ruby “awesome_print”
library[http://rubygems.org/gems/awesome_print]
output {
stdout { codec => rubydebug }
}
json: outputs event data in structured JSON format
output {
stdout { codec => json }
}
output {
stdout {
codec => ... # codec (optional), default: "plain"
workers => ... # number (optional), default: 1
}
}
The codec used for output data. Output codecs are a convenient method for encoding your data before it leaves the output, without needing a separate filter in your Logstash pipeline.
Only handle events without any of these tags. Note this check is additional to type and tags.
Only handle events with all of these tags. Note that if you specify a type, the event must also match that type. Optional.
The type to act on. If a type is given, then this output will only act on messages with the same type. See any input plugin’s “type” attribute for more. Optional.
The number of workers to use for this output. Note that this setting may not be useful for all outputs.