Capacity Planning

How to Set Up Prometheus and Grafana Monitoring on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Set Up Prometheus and Grafana Monitoring on Windows Server 2016

How to Monitor Windows Server with Prometheus and Grafana on Windows Server 2016 Prometheus and Grafana form a powerful open-source monitoring stack widely used in both Linux and Windows environments. Prometheus is a time-series metrics database that scrapes exporters at regular intervals. Grafana is a visualization platform that queries Prometheus and renders dashboards. On Windows […]

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How to Set Up Work Folders on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Set Up Work Folders on Windows Server 2016

How to Set Up Work Folders for Data Synchronisation on Windows Server 2016 Work Folders is a role service in Windows Server 2016 that allows users to synchronise work files between their devices and a centralised server, similar in concept to consumer services such as Dropbox or OneDrive, but hosted entirely within your own infrastructure. […]

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Common Problems 118546

Ubuntu 16.04 LTS – OOM killer terminates critical services

🔴 Critical   ⏱ 5–30 min  Last verified: 6 September 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]

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How to Set Up a Local Container Registry with Harbor on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a Local Container Registry with Harbor on RHEL 8

Harbor is an enterprise-grade, open-source container registry that extends the base OCI registry specification with role-based access control, project isolation, image vulnerability scanning powered by Trivy, and cross-datacenter image replication. Running your own Harbor instance on RHEL 8 gives your team a private, auditable registry with no bandwidth costs or rate-limiting imposed by Docker Hub. […]

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Common Problems 117522

Ubuntu 20.04 LTS PostgreSQL Won’t Start After Crash Recovery

🟠 High   ⏱ 5–30 min  Last verified: 3 September 2021 Affected versions: 20.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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How to Use Percona XtraBackup for MySQL Hot Backups on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Use Percona XtraBackup for MySQL Hot Backups on RHEL 7

How to Use Percona XtraBackup for MySQL Hot Backups on RHEL 7 Taking reliable backups of a live MySQL or MariaDB database without interrupting application traffic is a fundamental requirement for any production system. mysqldump works for small databases but locks tables and can run for hours on large datasets. Percona XtraBackup solves this problem […]

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How to Set Up Vagrant and VirtualBox on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Vagrant and VirtualBox on RHEL 7

How to Set Up Vagrant and VirtualBox on RHEL 7 Vagrant is an open-source tool by HashiCorp that automates the creation, configuration, and management of virtualized development environments. Combined with VirtualBox as a hypervisor backend, Vagrant allows developers and operations engineers on RHEL 7 to spin up reproducible Linux (or Windows) virtual machines with a […]

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How to Back Up and Restore MySQL Databases with mysqldump on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Back Up and Restore MySQL Databases with mysqldump on RHEL 8

Regular database backups are one of the most important operational habits for any MySQL deployment, and RHEL 8 provides all the tools you need to implement a solid backup strategy. mysqldump produces portable SQL dumps that are easy to restore and inspect, while mysqlpump adds parallelism for faster exports on larger datasets. This tutorial covers […]

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How to Configure MySQL Primary-Replica Replication on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure MySQL Primary-Replica Replication on RHEL 7

How to Configure MySQL Primary-Replica Replication on RHEL 7 MySQL replication allows data written to one server (the primary, formerly called master) to be automatically copied to one or more other servers (replicas, formerly called slaves). This is one of the most widely deployed MySQL high-availability techniques: it provides read-scale-out by offloading SELECT queries to […]

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How to Configure FSRM File Server Resource Manager on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure FSRM File Server Resource Manager on Windows Server 2019

Introduction to File Server Resource Manager on Windows Server 2019 File Server Resource Manager (FSRM) is a role service for Windows Server 2019 that provides comprehensive management of file server storage. It enables administrators to set storage quotas on volumes and folders, create file screening policies to block prohibited file types, generate storage usage reports, […]

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