Filesystem

How to Set Up Storage Spaces on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up Storage Spaces on Windows Server 2012 R2

How to Set Up Storage Spaces on Windows Server 2012 R2 Storage Spaces is a software-defined storage technology built into Windows Server 2012 R2 that allows you to pool physical disks of varying sizes and types (SAS, SATA, SSD) into virtual storage pools, then carve those pools into virtual disks with resiliency options such as […]

Read more
How to Configure Dynamic Access Control with Claims on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Dynamic Access Control with Claims on Windows Server 2012 R2

How to Configure Dynamic Access Control with Claims on Windows Server 2012 R2 Dynamic Access Control (DAC) is a data governance feature introduced in Windows Server 2012 that extends traditional Windows ACLs with claim-based access policies. Rather than managing file permissions purely through user and group membership, DAC allows file access decisions to be based […]

Read more
Common Problems 117996

Ubuntu 18.04 LTS – disk full under /var/log causes service failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 October 2019 Affected versions: Ubuntu 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 […]

Read more
How to Enable Brotli Compression in Nginx on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Enable Brotli Compression in Nginx on FreeBSD 12

Introduction How to Enable Brotli Compression in Nginx on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

Read more
How to Configure ACLs on Ext4 File Systems on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure ACLs on Ext4 File Systems on Debian 9

Introduction This guide explains how to Configure ACLs on Ext4 File Systems on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install […]

Read more
Common Problems 118072

Ubuntu 18.04 LTS rsyslog stops writing logs after disk pressure

🟡 Medium   ⏱ 5–30 min  Last verified: 28 September 2019 📖 ~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 & Cross-Refs References & Further […]

Read more
How to Install Podman as a Rootless Docker Alternative on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Podman as a Rootless Docker Alternative on RHEL 7

How to Install Podman as a Rootless Docker Alternative on RHEL 7 Podman is a daemonless, rootless container engine developed by Red Hat that is fully compatible with the OCI (Open Container Initiative) standard and largely compatible with the Docker CLI. Unlike Docker, Podman does not require a long-running background daemon running as root, which […]

Read more
Common Problems 121478

Disk Full in /var Causing Service Outages

🔴 Critical   ⏱ 5–30 min  Last verified: 27 September 2019 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 & […]

Read more
How to Configure Logrotate for Application Logs on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Logrotate for Application Logs on RHEL 8

Logrotate is the standard log rotation utility on RHEL 8, responsible for automatically compressing, archiving, and pruning log files before they consume excessive disk space. Without it, long-running applications like NGINX, custom services, and Java applications can silently fill a filesystem partition and cause outages. Logrotate ships with RHEL 8 and is already configured for […]

Read more
Common Problems 119084

Ubuntu 14.04 LTS High iowait Slows Entire System

🟡 Medium   ⏱ 5–30 min  Last verified: 23 September 2019 📖 ~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 & Cross-Refs References & Further […]

Read more
CHAT