User Guide Functional Overview Requirements Architecture System Installation NetEye Additional Components Installation Setup The neteye Command Director NetEye Self Monitoring Tornado Business Service Monitoring IT Operation Analytics - Telemetry Geo Maps NagVis Audit Log Shutdown Manager Reporting ntopng Visual Monitoring with Alyvix Elastic Stack IT Operations (Command Orchestrator) Asset Management Service Level Management Cyber Threat Intelligence - SATAYO NetEye Update & Upgrade How To NetEye Extension Packs Troubleshooting Security Policy Glossary
module icon Elastic Stack
Overview Architecture Authorization Kibana Elasticsearch Cluster Elasticsearch Configuration Replicas on a Single Node Elasticsearch Performance tuning Overview Enabling El Proxy Sending custom logs to El Proxy Configuration files Commands Elasticsearch Templates and Retentions El Proxy DLQ Blockchain Verification Handling Blockchain Corruptions El Proxy Metrics El Proxy Security El Proxy REST Endpoints Agents Logstash Elastic APM Elastic RUM Elastic XDR Log Manager - Deprecated
ntopng Visual Monitoring with Alyvix Elastic Stack IT Operations (Command Orchestrator) Asset Management Service Level Management Cyber Threat Intelligence - SATAYO Introduction to NetEye Monitoring Business Service Monitoring IT Operation Analytics Visualization Network Visibility Log Management & Security Orchestrated Datacenter Shutdown Application Performance Monitoring User Experience Service Management Service Level Management & Reporting Requirements for a Node Cluster Requirements and Best Practices NetEye Satellite Requirements TCP and UDP Ports Requirements Additional Software Installation Introduction Single Node Cluster NetEye Master Master-Satellite Architecture Underlying Operating System Acquiring NetEye ISO Image Installing ISO Image Single Nodes and Satellites Cluster Nodes Configuration of Tenants Satellite Nodes Only Nodes behind a Proxy Additional NetEye Components Single Node Cluster Node Satellites Nodes only Verify if a module is running correctly Accessing the New Module Cluster Satellite Security Identity and Access Management External Identity Providers Configure federated LDAP/AD Emergency Reset of Keycloak Configuration Advanced Configuration Roles Single Page Application in NetEye Module Permissions and Single Sign On Within NetEye Importing User Federation Groups inside another Group Importing OIDC IdP Groups inside another Group Resources Tuning Advanced Topics Basic Concepts & Usage Advanced Topics Monitoring Environment Templates Monitored Objects Import Monitored Objects Data Fields Deployment Icinga 2 Agents Configuration Baskets Dashboard Monitoring Status VMD Permissions Notifications Jobs API Configuring Icinga Monitoring Retention Policy NetEye Self Monitoring Concepts Collecting Events Add a Filter Node WHERE Conditions Iterating over Event fields Retrieving Payload of an Event Extract Variables Create a Rule Tornado Actions Test your Configuration Export and Import Configuration Example Under the hood Development Retry Strategy Configuration Thread Pool Configuration API Reference Configure a new Business Process Create your first Business Process Node Importing Processes Operators The ITOA Module Configuring User Permissions Telegraf Metrics in NetEye Telegraf Configuration Telegraf on Monitored Hosts Visualizing Dashboards Customizing Performance Graph The NetEye Geo Map Visualizer Map Viewer Configuring Geo Maps NagVis Audit Log Overview Shutdown Manager user Shutdown Manager GUI Shutdown Commands Advanced Topics Overview User Role Management Cube Use Cases ntopng and NetEye Integration Permissions Retention Advanced Topics Overview User Roles Nodes Test Cases Dashboard Use Cases Overview Architecture Authorization Kibana Elasticsearch Cluster Elasticsearch Configuration Replicas on a Single Node Elasticsearch Performance tuning Overview Enabling El Proxy Sending custom logs to El Proxy Configuration files Commands Elasticsearch Templates and Retentions El Proxy DLQ Blockchain Verification Handling Blockchain Corruptions El Proxy Metrics El Proxy Security El Proxy REST Endpoints Agents Logstash Elastic APM Elastic RUM Elastic XDR Log Manager - Deprecated Overview Authorization in the Command Orchestrator Module Configuring CLI Commands Executing Commands Overview Permissions Installation Single Tenancy Multitenancy Communication through a Satellite Asset collection methods Display asset information in monitoring host page Overview Customers Availability Event Adjustment Outages Resource Advanced Topics Introduction Getting Started SATAYO Items Settings Managed Service Mitre Attack Coverage Changelog Before you start Update Procedure Single Node Upgrade from 4.43 to 4.44 Cluster Upgrade from 4.43 to 4.44 Satellite Upgrade from 4.43 to 4.44 DPO machine Upgrade from 4.43 to 4.44 Create a mirror of the RPM repository Sprint Releases Feature Troubleshooting Tornado Networking Service Management - Incident Response IT Operation Analytics - Telemetry Identity Provider (IdP) Configuration NetEye Cluster on Microsoft Azure Introduction to NEP Getting Started with NEPs Online Resources Obtaining NEP Insights Available Packages Advanced Topics Upgrade to NetEye 4.31 Setup Configure swappiness Restarting Stopped Services Enable stack traces in web UI How to access standard logs Director does not deploy when services assigned to a host have the same name How to enable/disable debug logging Activate Debug Logging for Tornado Modules/Services do not start Sync Rule fails when trying to recreate Icinga object How to disable InfluxDB query logging Managing an Elasticsearch Cluster with a Full Disk Some logs are not indexed in Elasticsearch Elasticsearch is not functioning properly Reporting: Error when opening a report Debugging Logstash file input filter Bugfix Policy Reporting Vulnerabilities Glossary

Replicas on a Single Node

Some templates may require indices to have at least one replica, which in simple terms means that the index must be replicated on more than one node. While having replicas is straightforward on a NetEye Cluster, on Single Node installations this is not possible, which causes these indices to go in yellow state due to the so-called unassigned shards warning.

Since on Single Node installations this warning cannot be solved by assigning shards to other nodes, the solution to the problem is to tell Elasticsearch that non-replicated indices should be allowed.

NetEye applies this solution by default during the neteye install on the templates and indices which have this problem. However, some templates and indices are created only when some features of the Elastic Stack are triggered by the user and must be manually fixed by the Elastic Stack administrator.

To facilitate the job of admin though, NetEye provides a set of scripts which help to fix the problem by setting the option index.auto_expand_replicas to 0-1 on the templates allowing the indices to have zero replicas on Single Node installations.

Depening whether the problematic index is managed by Fleet or not, you may use the appropriate script.

Index Templates Managed by Fleet

To fix index templates managed by Fleet (for example those that are automatically created when installing a new Elastic integration) you can use the following script that will resolve this issue on all the Fleet-managed index templates and already created associated indexes.

neteye# python3 /usr/share/neteye/elasticsearch/scripts/configurator/fix_fleet_integrations_autoexpand_replicas.py

Index Templates Not Managed by Fleet

Suppose that, after the creation and execution of a Security rule, you identified that the Elasticsearch template that causes the index to have the number of replicas set to one (or more) is named .items-default. You can then call the script as follows:

neteye# bash /usr/share/neteye/elasticsearch/scripts/elasticsearch_set_autoexpand_replicas_to_index_templates_and_indexes.sh ".items-default"

Note

The script works only with the composable index templates introduced in Elasticsearch 7.8 and does not support the Legacy index templates.

Moreover, the script supports the update of multiple Index Templates at once. To perform such operation simply pass the multiple Index Templates names as arguments, like this:

neteye# bash /usr/share/neteye/elasticsearch/scripts/elasticsearch_set_autoexpand_replicas_to_index_templates_and_indexes.sh <index_template_name_1> <index_template_name_2> <index_template_name_3>
Blog Online Demo Training
Contact Us
© 2025, Wuerth Phoenix S.r.l.
VAT ID 01054690217
Privacy Cookies