> For the complete documentation index, see [llms.txt](https://docs.opstreelabs.in/logging-operator/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.opstreelabs.in/logging-operator/master.md).

# Logging Operator

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### Features Highlight

The "Logging Operator" includes these features:-

* Elasticsearch different node types, like:-
  * **Master Node** => A node that has the master role (default), which makes it eligible to be elected as the master node, which controls the cluster.
  * **Data Node** => A node that has the data role (default). Data nodes hold data and perform data-related operations such as CRUD, search, and aggregations.
  * **Ingestion Node** => A node that has the ingest role (default). Ingest nodes are able to apply an ingest pipeline to a document in order to transform and enrich the document before indexing. With a heavy ingest load, it makes sense to use dedicated ingest nodes and to not include the ingest role from nodes that have the master or data roles.
  * **Client or Coordinator Node** => Requests like search requests or bulk-indexing requests may involve data held on different data nodes. A search request, for example, is executed in two phases which are coordinated by the node which receives the client request — the coordinating node.
* Elasticsearch setup with or without TLS on Transport and HTTP Layer
* Customizable elasticsearch configuration and configurable heap size
* Fluentd as a lightweight log-shipper and JSON field separation support
* Kibana integration with elasticsearch for logs visualization
* Seamless upgrade for Elasticsearch, Fluentd, and Kibana stack
* Inculcated best practices for Kubernetes setup like `SecurityContext` and `Privilege Control`
* Loosely coupled setup, i.e. Elasticsearch, Fluentd, and Kibana setup can be done individually as well
* Index Lifecycle support to manage rollover and cleanup of indexes
* Index template support for configuring index settings like- policy, replicas, shards, etc.

![](/files/-MFUYexQG8NHNTSGW1ni)