NetForest – Monitoring

The NetForest monitoring components enable a user to easily monitor the cluster. User can view health and performance data for cluster in real time.

Viewing Monitoring Data

To view monitoring data, go to the Monitoring menu, user is navigated to the Cluster Overview window.

This window displays various monitoring information, such as CPU utilization, memory utilization, and documents per second. It also provides cluster statistics, such as total nodes, total shards, successful shards, number of indices, total number of documents, and size of documents. Apart from this, some other information is provided in the Cluster Health and Indices section. This window also consists of several button. By clicking on them, user can perform certain actions or can view the information on the clusters. Description of those buttons is provided in the subsequent sections.

Node Diagnostics: It provides helpful diagnostics and performance information for all nodes in the cluster.

Node 1: It provides helpful diagnostics and performance information for node-1 in the cluster.

Node 2: It provides helpful diagnostics and performance information for node-2 in the cluster. Information for all other nodes can be viewed separately by clicking on the node buttons (if any).

Indices Management

Clicking the indices button navigates the user to Indices Overview section. This section contains information on indices, such as index name, number of documents, primary size of docs, number of shards, number of replicas, and status. Here, user can perform several actions, such as create an index, refresh all indices, optimize all indices, flush all indices, and clear cache.

Query

Clicking the Query button navigates the user Query UI section where user can browse documents. Use the options on the left-hand menu to query the indices.

Mappings

This section is used to view the information on type mapping and detailed information on type. Clicking the Mapping button navigates the user to Type Mapping section. Each type and its associated index is displayed in this section.

User can also view the mapping information of type by clicking the Type name.

This section displays mapping name, type, format, and store. User can delete a mapping by clicking the Delete Mapping button.

REST

Clicking on REST navigates the user to REST console. Use the options on the left-hand menu to make REST API requests to cluster. This screen will then display the JSON response.

All commands are issued in ‘_all’ scope; meaning that the request will affect all of the nodes, indices, or mappings. The symbol denotes request for information and  denotes commands and actions.

View Cluster Diagram

Cluster diagrams is also called cloud diagram. They can be considered “are a type of non-linear graphic organizer that can help to systematize the generation of ideas based upon a central topic.

To view cluster diagram, click the View Cluster Diagram button .

Below are the legends used in cluster diagram.