IT, Cloud & DevOps Blog

How to Install and Configure Caddy Web Server on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure Caddy Web Server on RHEL 7

How to Install and Configure Caddy Web Server on RHEL 7 Caddy is a modern, open-source web server written in Go that sets itself apart from traditional servers like Apache and Nginx through its automatic HTTPS provisioning, minimal configuration syntax, and zero-dependency binary distribution. On RHEL 7, where the standard repositories do not include Caddy, […]

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How to Install GitLab CE on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install GitLab CE on RHEL 8

GitLab Community Edition is a full-featured, self-hosted DevOps platform combining Git repository management, issue tracking, CI/CD pipelines, and a container registry in a single application. Running GitLab CE on RHEL 8 gives you complete control over your source code and pipeline infrastructure without relying on third-party SaaS providers. This tutorial covers installing GitLab CE from […]

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Common Problems 115393

RHEL 7 – Yum Metadata Corruption Blocks Security Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 25 June 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 […]

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How to Install and Configure Tomcat 8 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure Tomcat 8 on Debian 9

Introduction Deploying install and configure tomcat 8 on debian 9 on a Debian 9 Stretch 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 Ensure […]

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openSUSE Tumbleweed — koan — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — koan — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0046-1 (see also SUSE bugzilla) Related CVEs: CVE-2011-4953 CVE-2012-2395 CVE-2016-9605 CVE-2014-3225 Upstream summary: The set_mgmt_parameters function in item.py in cobbler before 2.2.2 allows context-dependent attackers to execute arbitrary code via vectors related […]

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