Firewall

How to Configure Redis Cluster and Sentinel on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Redis Cluster and Sentinel on RHEL 8

Redis provides two high-availability mechanisms: Sentinel for automatic failover on a primary-replica setup, and Cluster for horizontal partitioning across multiple nodes. Both are production-grade solutions supported on RHEL 8 through the EPEL 8 repository or directly from the Redis package. Understanding when to use each helps you design a topology that meets your durability and […]

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How to Set Up pgBouncer Connection Pooler on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up pgBouncer Connection Pooler on Debian 12

Introduction Deploying set up pgbouncer connection pooler on debian 12 on a Debian 12 Bookworm 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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How to Install Elasticsearch on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Elasticsearch on RHEL 8

Elasticsearch is a distributed, RESTful search and analytics engine capable of handling large volumes of structured and unstructured data in near real time. It is the core component of the Elastic Stack, widely used for log aggregation, full-text search, and observability pipelines. On RHEL 8, installing Elasticsearch requires adding the official Elastic repository and configuring […]

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How to Configure Percona XtraBackup on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Percona XtraBackup on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up configure percona xtrabackup on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully and the […]

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How to Install ClickHouse on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install ClickHouse on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up install clickhouse on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully and the resulting […]

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How to Set Up CouchDB on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up CouchDB on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up set up couchdb on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully and the […]

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How to Set Up PostgreSQL Streaming Replication on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up PostgreSQL Streaming Replication on RHEL 8

PostgreSQL streaming replication continuously ships Write-Ahead Log (WAL) records from a primary server to one or more standby replicas in near real time. The standby can serve as a warm failover target or, in hot-standby mode, accept read-only queries to offload reporting traffic from the primary. This tutorial configures a two-node streaming replication setup on […]

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How to Install and Configure Cassandra on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install and Configure Cassandra on Debian 12

Introduction This guide explains how to Install and Configure Cassandra on Debian 12 on Debian 12 Bookworm. Debian Bookworm 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 12 install with the […]

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How to Configure PostgreSQL Remote Access and SSL on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure PostgreSQL Remote Access and SSL on RHEL 8

A default PostgreSQL installation on RHEL 8 only accepts connections from the local machine over a Unix socket. To allow client applications on other hosts to connect, you must configure the server to listen on a network interface, update the host-based authentication file, open the firewall port, and enable SSL so that credentials and data […]

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How to Set Up TimescaleDB on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up TimescaleDB on Debian 12

Introduction Deploying set up timescaledb on debian 12 on a Debian 12 Bookworm 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 Debian 12 […]

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