Cpu Memory

How to Monitor Windows Server 2016 with Nagios — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Monitor Windows Server 2016 with Nagios

How to Configure Windows Server 2016 with Nagios Nagios is one of the most widely deployed open-source monitoring platforms in enterprise environments. It provides comprehensive monitoring for servers, network devices, services, and applications, with a flexible plugin architecture that makes it highly extensible. Integrating Windows Server 2016 with Nagios gives your operations team real-time visibility […]

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Common Problems 117959

Ubuntu 18.04 LTS High CPU Usage from systemd-journald

🟡 Medium   ⏱ 5–30 min  Last verified: 26 October 2022 Affected versions: 18.04 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 Set Up Two-Factor Authentication with Google Authenticator on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication with Google Authenticator on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up set up two-factor authentication with google authenticator on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each […]

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How to Set Up Docker Swarm Cluster on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Docker Swarm Cluster on Debian 11

Introduction Deploying set up docker swarm cluster on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before […]

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How to Deploy an Application to Kubernetes on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy an Application to Kubernetes on RHEL 9

Deploying an application to Kubernetes involves creating a set of resource objects that describe the desired state of the application — Kubernetes continuously works to make the actual state match this desired state. The core resources for most applications are: a Deployment (manages the desired number of running pod replicas and handles rolling updates), a […]

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How to Install HashiCorp Vault for Secrets Management on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install HashiCorp Vault for Secrets Management on RHEL 7

How to Install HashiCorp Vault for Secrets Management on RHEL 7 HashiCorp Vault is an open-source tool for securely storing and tightly controlling access to tokens, passwords, certificates, API keys, and other secrets throughout the software lifecycle. Unlike storing secrets in configuration files or environment variables, Vault provides a central, audited, and access-controlled secrets store […]

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Common Problems 121578

OOM Killer Terminating Critical Application Processes

🔴 Critical   ⏱ 5–30 min  Last verified: 19 October 2022 Affected versions: Debian 9 📖 ~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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Common Problems 111678

Windows Server 2022 — SQL Server tempdb growth fills system volume — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 October 2022 Affected versions: Windows Server 2022 📖 ~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 Install Gradle Build Tool on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Gradle Build Tool on Debian 11

Introduction How to Install Gradle Build Tool on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 11. […]

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How to Create Python Virtual Environments on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Create Python Virtual Environments on Debian 11

Introduction Deploying create python virtual environments on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you […]

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