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GrayLog is a leading open source log management platform, it allows you to collect, index, and analyze logs from just about any source in a centralized location. In this guide, we will be installing all of the requirements (Graylog, Elasticsearch, MongoDB) on the same server, but for larger production environment this may not be ideal.
Graylog requires that you have the following packages installed.
Java ( >= 8 )
Elasticsearch (5.x or 6.x)
MongoDB (3.6 or 4.0)
If you’re running all components (Graylog, Elasticsearch, MongoDB) on a single machine, a reasonably modern multi core CPU
4 GB of main memory will do if you’re running all components (Graylog, Elasticsearch, MongoDB)
Optional: Installing GrayLog Plugins
Access the web interface at the http_bind_address with the username admin, and the password used to generate the hash for root_password_sha2.