filebeat should be used for shipping log files. Elastic stack now includes a family of components, called beats. Logstash shipper is not active as a project anymore.
ELK STACK FILEBEATS FLOW DIAGRAM UPDATE
Update 2019Īs the article above seems to still get some visits, I decided to post below a short update, as the Elastic stack has evolved over last years and some parts are worth updating: filebeat Lumberjack protocol (used internally by logstash-forwarder) uses TLS for authentication and encryption, which will help you to encrypt log messages and make sure, that no one else can flood your log storage and disk space problems. You can have plenty of storage and flexible contracts by using servers from companies like Hetzner, Leaseweb or OVH. It's usually cheaper and better to forward logs from services hosted in clouds to dedicated machines. While more and more projects benefit from IaaS hosting and public cloud offerings, in many cases for log storage we don't need cloud flexibility - but we need cheap storage. You don't need to be Hadoop expert to be able to benefit from its components - and in our case, use scalable, distributed and replicating filesystem. Why this datastore? It's easy to setup component of Apache Hadoop. Performance and system logs are also seperated between two indexes, which makes it easier to deal with different types of data with Kibana. It makes it easy to implement a cronjob, which deletes indexes older than XXX days. The Elasticsearch indexes have date included in their name. Save performance and system logs in seperate Elasticsearch indices.Break syslog messages into fields, using grok regular expression engine.Get messages from redis running on localhost.Let's have a look on sample configuration file. It works great with logrotate - when log files are rotated (what is always good idea), it starts reading the new file from beginning. As logfiles contain information which should be kept secret, it uses TLS encryption for data transmitted over public networks (aka Internet). It is watching the files for new contents and forwarding incoming entries to the specified logstash server. It works by opening all specified log files and doing a "tail" operation on them. It should be installed on every server which saves any kind of logs. Logstash-forwarder (formerly known as lumberjack) is a component, which collect logs from machines and ships them to central logstash instance.
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