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logstash-forwarder-java/README.md
2015-03-19 14:40:27 +01:00

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# logstash-forwarder-java
## What is this ?
Logstash-forwarder-java is a log shipper program written in java. This is in fact a java version of [logstash-forwarder](https://github.com/elasticsearch/logstash-forwarder) by jordansissel.
Here are a few features of this program :
- compatible with Java 5 runtime
- lightweight : package size is ~2MB
- configuration compatible with logstash-forwarder
- lumberjack output (including zlib compression)
## Why ?
Logstash-forwarder is written in go. This programming language is not available on all platforms (for example AIX), that's why a java version is more portable.
Logstash runs on java and provides a lumberjack output, but the file input doesn't run on all plaforms (for example AIX) and logstash requires a recent JVM. Moreover Logstash is heavier : big package and more system resources.
So logstash-forwarder-java is a solution for those who want a portable, lightweight log shipper for their ELK stack.
## How to install it ?
Download one of the following archives :
- [logstash-forwarder-java-0.1.1-bin.zip](https://github.com/didfet/logstash-forwarder-java/releases/download/0.1.1/logstash-forwarder-java-0.1.1-bin.zip)
- [logstash-forwarder-java-0.1.1-bin.tar.gz](https://github.com/didfet/logstash-forwarder-java/releases/download/0.1.1/logstash-forwarder-java-0.1.1-bin.tar.gz)
- [logstash-forwarder-java-0.1.1-bin.tar.bz2](https://github.com/didfet/logstash-forwarder-java/releases/download/0.1.1/logstash-forwarder-java-0.1.1-bin.tar.bz2)
Or download the maven project and run maven package. Then you can install one of the archives located in the target directory.
## Differences with logstash-forwarder
### Configuration
The configuration file is the same (json format), but there are a few differences :
- the ssl ca parameter points to a java keystore containing the root certificate of the server, not a PEM file
- comments are C-style comments
### Command-line options
Some options are the same :
- config (but only for a file, not a directory)
- quiet
- idle-timeout (renamed idletimeout)
- spool-size (renamed spoolsize)
- help
There are a few more options :
- debug : turn on debug logging level
- trace : turn on trace logging level