The Linux Audit daemon (auditd) ships enabled by default on RHEL 8 and provides a kernel-level event logging subsystem capable of recording file access, system calls, user logins, and privilege escalation. Unlike application-level logging, audit records are written directly by the kernel and are tamper-evident, making them suitable for compliance frameworks such as PCI-DSS, HIPAA, […]
VictoriaMetrics is a fast, cost-efficient time-series database designed as a drop-in replacement for Prometheus storage. It supports the full Prometheus remote_write protocol, exposes its own MetricsQL query language (fully compatible with PromQL), and operates as a single binary with no external dependencies. On RHEL 8, the installation takes under five minutes and the memory footprint […]
Alertmanager handles alert routing, deduplication, and notification dispatch for Prometheus. By integrating it with Slack and PagerDuty, your team receives real-time notifications through familiar channels while on-call engineers get paged for critical incidents. This tutorial walks through installing Alertmanager on RHEL 8, configuring receivers for both platforms, setting up routing logic, and verifying the setup […]
cAdvisor (Container Advisor) is an open-source daemon from Google that collects, aggregates, and exports real-time resource usage and performance metrics for every running container on a host. Unlike Node Exporter, which reports host-level statistics, cAdvisor descends into cgroup hierarchies to expose per-container CPU, memory, network, and filesystem metrics in Prometheus format. On RHEL 8 with […]
Grafana transforms raw Prometheus time-series data into actionable visual dashboards through a drag-and-drop interface backed by the powerful PromQL query language. On RHEL 8 with Prometheus and Node Exporter already collecting host metrics, you can build a professional server monitoring dashboard in under an hour — displaying CPU usage, memory consumption, disk I/O, and network […]
SNMP (Simple Network Management Protocol) remains the dominant standard for monitoring network devices, switches, routers, and hardware appliances that do not expose Prometheus endpoints. On RHEL 8, the net-snmp package provides both the daemon and a suite of command-line tools for querying and testing SNMP agents. This tutorial covers installing and configuring the SNMP daemon, […]
The Prometheus Blackbox Exporter probes external endpoints over HTTP, HTTPS, TCP, ICMP, and DNS and exposes the results as Prometheus metrics. Unlike Node Exporter, which reports host-level statistics, the Blackbox Exporter answers the question “can this URL be reached right now?” — making it the right tool for synthetic uptime monitoring and SLA measurement. This […]
Uptime Kuma is a self-hosted monitoring tool that provides a clean web interface for tracking the availability of HTTP endpoints, TCP ports, DNS records, and ping targets. On RHEL 8, you can deploy it quickly using Docker or run it directly with Node.js managed by PM2. This tutorial walks through both installation methods, configuring monitors, […]
syslog-ng is a high-performance, feature-rich syslog daemon that far exceeds the capabilities of the standard rsyslog — it supports complex log routing with conditional filters, structured parsing, TLS-encrypted transport, and native output plugins for Elasticsearch, Kafka, and cloud logging services. On RHEL 8 the package is available from EPEL, making installation straightforward without manual source […]
Jaeger is an open-source, end-to-end distributed tracing system originally developed by Uber Technologies and now a CNCF graduated project. It lets you follow a single user request as it propagates across dozens of microservices, measure the latency contribution of each span, and pinpoint the exact service or database call responsible for a slowdown. On RHEL […]
Progressive Robot: Your Gateway to Comprehensive IT Solutions — Specializing in Web Development, Mobile App Development, and Expert IT Services.
© All Copyright by Progressiverobot.com
VAT Number ( 506152326 )
