How to Configure SNMP Monitoring on RHEL 7 Simple Network Management Protocol (SNMP) is one of the most widely supported protocols for monitoring network devices, servers, storage appliances, and virtually any managed infrastructure component. Configuring SNMP on Red Hat Enterprise Linux 7 allows your monitoring platform — whether Zabbix, LibreNMS, Nagios, or Prometheus with the […]
How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 7 The Prometheus Blackbox Exporter probes external endpoints over HTTP, HTTPS, TCP, ICMP, and DNS from the perspective of an outside caller, making it an essential complement to node-level metrics collected by Node Exporter. While Node Exporter tells you about CPU load and memory […]
How to Set Up Uptime Kuma for Service Monitoring on RHEL 7 Uptime Kuma is a self-hosted, open-source uptime monitoring tool that provides a clean web interface for tracking the availability of HTTP endpoints, TCP ports, DNS records, and more. It supports multiple notification channels including email, Slack, and Telegram, and includes a built-in public […]
How to Configure syslog-ng for Centralised Syslog on RHEL 7 Every Linux system generates a continuous stream of log data from the kernel, system services, and applications. On a single host, rsyslog handles this adequately, but when you need to aggregate logs from dozens or hundreds of servers into a central repository, filter them intelligently, […]
How to Install Jaeger for Distributed Tracing on RHEL 7 As systems evolve from monoliths to microservices, understanding the path of a single request across dozens of services becomes increasingly difficult using traditional logs and metrics alone. Jaeger is an open-source distributed tracing platform originally developed by Uber Technologies and now hosted by the Cloud […]
How to Set Up OpenTelemetry Collector on RHEL 7 OpenTelemetry is the emerging industry standard for collecting telemetry data — traces, metrics, and logs — from applications and infrastructure. The OpenTelemetry Collector acts as a vendor-agnostic pipeline component that receives telemetry from instrumented applications, processes it, and exports it to one or more backends such […]
How to Monitor MySQL with Percona Monitoring and Management on RHEL 7 Percona Monitoring and Management (PMM) is a free, open-source platform for monitoring MySQL, MariaDB, PostgreSQL, and MongoDB. It combines Grafana dashboards, Prometheus metrics collection, and Query Analytics (QAN) into a single integrated UI. Unlike generic monitoring tools, PMM understands database internals and surfaces […]
How to Install and Configure Nagios Core on RHEL 7 Nagios Core is one of the most widely deployed open-source infrastructure monitoring systems in the world. It provides comprehensive monitoring of hosts, services, and network devices, alerting administrators when things go wrong and when they recover. On RHEL 7, setting up Nagios Core from source […]
How to Install InfluxDB and Telegraf on RHEL 7 InfluxDB is a purpose-built time series database optimised for the high-write workloads that are typical in infrastructure monitoring, IoT data collection, and application performance tracking. Unlike general-purpose databases, InfluxDB stores measurements indexed by timestamp and tag values, enabling sub-millisecond queries across billions of data points. Telegraf […]
How to Set Up Grafana Alerting and Notification Channels on RHEL 7 Grafana’s alerting system transforms your monitoring dashboards from a passive display into an active early-warning network. When a metric crosses a threshold — CPU saturation, disk exhaustion, an elevated error rate — Grafana fires an alert and routes a notification to whichever channels […]
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