Operations

How to Configure MariaDB Galera Cluster on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure MariaDB Galera Cluster on RHEL 7

How to Configure MariaDB Galera Cluster on RHEL 7 MariaDB Galera Cluster is a synchronous multi-primary replication solution for MariaDB. Every node in a Galera cluster can accept writes simultaneously, and changes are replicated to all other nodes before a transaction is confirmed to the client. This eliminates replication lag, prevents data loss on node […]

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How to Set Up MongoDB Replica Set on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up MongoDB Replica Set on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up mongodb replica set on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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How to Install ClickHouse Columnar Database on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install ClickHouse Columnar Database on RHEL 7

How to Install ClickHouse Columnar Database on RHEL 7 ClickHouse is an open-source columnar database management system developed by Yandex, designed specifically for online analytical processing (OLAP) workloads. Unlike traditional row-oriented databases, ClickHouse stores data by column, enabling it to read only the columns needed for a query and compress similar data together — resulting […]

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How to Install MongoDB on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install MongoDB on Debian 9 (DEBIAN-9-2)

Introduction This guide explains how to Install MongoDB 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 with the standard repositories […]

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How to Configure Redis Cluster and Sentinel on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Redis Cluster and Sentinel on RHEL 7

How to Configure Redis Cluster and Sentinel on RHEL 7 Redis is an in-memory data structure store used as a database, cache, and message broker. For production environments requiring high availability and horizontal scalability, Redis offers two complementary mechanisms: Redis Cluster for automatic data sharding across multiple nodes, and Redis Sentinel for automatic failover of […]

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How to Configure Redis Sentinel on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Redis Sentinel on Debian 9

Introduction How to Configure Redis Sentinel on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 9. This […]

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How to Install Elasticsearch on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Elasticsearch on RHEL 7

How to Install Elasticsearch on RHEL 7 Elasticsearch is a distributed, RESTful search and analytics engine built on Apache Lucene. It is widely used for full-text search, log aggregation, and real-time data analysis. This guide walks you through installing and configuring Elasticsearch on Red Hat Enterprise Linux 7, including repository setup, basic cluster configuration, JVM […]

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How to Install Redis on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Redis on Debian 9

Introduction This guide explains how to Install Redis 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 with the standard repositories […]

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How to Configure MySQL InnoDB Tuning on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure MySQL InnoDB Tuning on Debian 9

Introduction Deploying configure mysql innodb tuning 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 You will […]

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How to Install and Configure SQLite on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure SQLite on RHEL 7

How to Install and Configure SQLite on RHEL 7 SQLite is a self-contained, serverless, zero-configuration relational database engine that stores an entire database as a single file on disk. Unlike PostgreSQL or MySQL, SQLite requires no dedicated daemon, no user accounts, and no network configuration — the database engine is a library linked directly into […]

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