elasticsearch-templates

The repository contains scripts and sources to generate Elasticsearch templates that comply with Common Data Model.

Problem Statement

We are trying to solve the problem of conflicts and inconsistencies in log data as collected by, and from, different subsystems stored together as a unified data set under one warehouse.

Namespace hierarchy

Namespace hierarchy on the log metadata is the key concept. We use the Elasticsearch index templates and document mapping to cast the common metadata keys into usable documents.

Namespace corresponds to a top-level JSON key of Elasticsearch document. Namespace is usually defined per individual app or subsystem, so that different applications/subsystems not conflict in various metadata fields.

Adding new namespace

Create a namespace definition file in namespaces/ folder.

Adding new Elasticsearch template

Create a sub-folder in templates/ folder, named as the desired template. (Alternatively copy/modify one of the existing template folders)

Add/modify template.yml definition file to include proper namespace definitions. See for example templates/openshift/README.md for the details.

Generating documentation

Use the makefile in the templates/ folder.

Alternatively, run the following command: python ./scripts/generate_template.py (path to template in templates/) namespaces/ --doc.

The generated file looks like "xxx.asciidoc".

Viewing the documentation

Install the asciidoc viewer in web browser.

Open the local path to the asciidoc file "xxx.asciidoc" in your browser.