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How to Configure Disk Quotas on Ext4 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Disk Quotas on Ext4 on Debian 9

Introduction Deploying configure disk quotas on ext4 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 Before […]

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How to Set Up Yubikey Authentication on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Yubikey Authentication on Debian 11

Introduction How to Set Up Yubikey Authentication 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 Install Cassandra on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Cassandra on CentOS Stream 9

Introduction This tutorial demonstrates how to Install Cassandra on CentOS Stream 9 on CentOS Stream 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered CentOS Stream 9 system with the default AppStream […]

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How to Install Podman on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Podman on Debian 11

Introduction This guide explains how to Install Podman on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install with the standard repositories […]

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Debian 11 — nss-pam-ldapd — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — nss-pam-ldapd — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 February 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-0288 Upstream summary: nss-pam-ldapd before 0.7.18 and 0.8.x before 0.8.11 allows context-dependent attackers to cause a denial of service (application crash) and possibly execute arbitrary code by performing […]

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

How to Configure MySQL Group Replication on RHEL 7

How to Configure MySQL Group Replication on RHEL 7 MySQL Group Replication, introduced in MySQL 5.7.17, is a plugin-based high-availability mechanism that enables a set of MySQL servers to form a replication group where all writes are coordinated through a distributed consensus algorithm (Paxos-based). Unlike classic primary-replica replication, Group Replication provides built-in automatic failover: if […]

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How to Install Drupal on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Drupal on CentOS Stream 9

Introduction How to Install Drupal on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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How to Install Debian 9 Stretch on a Server — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Debian 9 Stretch on a Server

Introduction Deploying install debian 9 stretch on a server 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 Before you […]

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How to Enable OCSP Stapling on Nginx on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Enable OCSP Stapling on Nginx on Debian 11

Introduction This guide explains how to Enable OCSP Stapling on Nginx on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install with […]

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How to Use Bacula for Enterprise Backup on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Use Bacula for Enterprise Backup on RHEL 8

Bacula is a mature, enterprise-class open-source backup solution that supports tape libraries, disk-based storage, and remote clients across heterogeneous environments. Its client-server architecture separates the Director (job scheduler and catalog manager), Storage Daemon (tape or file I/O), and File Daemon (agent running on each backed-up host), allowing you to scale from a single server to […]

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