Because of the clear similarities with the Beats, we decided the best path forward was to transform the Logstash Forwarder into a Beat. Unfortunately it tended to lag behind in terms of improvements and bug fixes when compared to Logstash itself. Logstash-Forwarder was started by the creator of Logstash, Jordan Sissel and maintained by the Logstash developers. Logstash-Forwarder is a simple lightweight Go application that forwards all the logs of your servers to a central location for further processing. "Filebeat is the successor of the Logstash Forwarder, a lightweight log shipper that has been used in production by many companies for years. The libbeat platform also includes mechanisms for detecting when downstream servers are getting overloaded or the network in between is getting congested, so it can reduce the sending rate." For this we developed libbeat, the Go library that contains the common parts of all Beats for dealing with common tasks like inserting in bulk into Elasticsearch, securely sending events to Logstash, load-balancing the events to multiple Logstash and Elasticsearch nodes, and sending events in synchronous and asynchronous modes. "Our goal was to build a platform that makes it easy for our community to create new Beats. As the next-generation Logstash Forwarder, Filebeat tails logs and quickly sends this information to Logstash for further parsing and enrichment or to Elasticsearch for centralized storage and analysis." "Filebeat is a lightweight, open source shipper for log file data. It uses the lumberjack protocol to communicate with the Logstash server. The Filebeat agent is implemented in Go, and is easy to install and configure.
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