Infrastructure monitoring in Elasticsearch

Introduction

Infrastructure monitoring helps you watch your servers and systems to catch problems early. It keeps your services running smoothly by alerting you when something goes wrong.

You want to know if a server is running out of disk space.

You need to track CPU and memory usage over time.

You want alerts if a service stops working.

You want to see trends in network traffic.

You want to troubleshoot slow response times.

Syntax

Elasticsearch

GET _cat/indices?v
GET _cluster/health
GET _nodes/stats
GET _cat/nodes?v

These commands use Elasticsearch REST API to get monitoring data.

Use GET requests to fetch current stats and health info.

Examples

Shows a table of all indices with their health and size.

Elasticsearch

GET _cat/indices?v

Shows overall cluster health status (green, yellow, red).

Elasticsearch

GET _cluster/health

Returns detailed stats about each node's CPU, memory, and disk.

Elasticsearch

GET _nodes/stats

Shows a summary table of nodes with CPU and memory usage.

Elasticsearch

GET _cat/nodes?v

Sample Program

This command checks the health of your Elasticsearch cluster.

Elasticsearch

GET _cluster/health

Important Notes

Use Kibana or other dashboards to visualize this data easily.

Regular monitoring helps prevent downtime and data loss.

Combine Elasticsearch monitoring with alerting tools for best results.

Summary

Infrastructure monitoring watches your systems to keep them healthy.

Elasticsearch provides APIs to check cluster and node status.

Use these commands regularly to catch issues early.