How to Configure PostgreSQL Remote Access and SSL on RHEL 7 By default, PostgreSQL on RHEL 7 only accepts connections from localhost and rejects all remote clients. For multi-tier applications where the web or application server runs on a separate host from the database, you need to explicitly open PostgreSQL to remote connections — and […]
How to Secure MySQL on RHEL 7 A default MySQL installation leaves several security gaps that can expose your databases to unauthorized access, data theft, or privilege escalation. On Red Hat Enterprise Linux 7, taking deliberate steps to harden MySQL immediately after installation is essential for any production or internet-facing system. This guide walks through […]
How to Install pgAdmin 4 on RHEL 7 pgAdmin 4 is the leading open-source administration and management tool for PostgreSQL databases. It provides a feature-rich web-based interface for browsing database objects, running SQL queries, monitoring server activity, managing roles and tablespaces, and much more. Unlike pgAdmin 3 which was a native desktop application, pgAdmin 4 […]
How to Back Up and Restore MySQL Databases with mysqldump on RHEL 7 Regular database backups are the single most important operational task for any MySQL administrator. mysqldump is the built-in logical backup utility that ships with every MySQL and MariaDB installation — it produces plain-text SQL files that can be compressed, transferred off-site, and […]
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 […]
How to Configure MySQL Primary-Replica Replication on RHEL 7 MySQL replication allows data written to one server (the primary, formerly called master) to be automatically copied to one or more other servers (replicas, formerly called slaves). This is one of the most widely deployed MySQL high-availability techniques: it provides read-scale-out by offloading SELECT queries to […]
How to Install phpMyAdmin on RHEL 7 phpMyAdmin is a free, open-source web-based tool for administering MySQL and MariaDB databases through a browser interface. Rather than relying on the command line for every operation, phpMyAdmin lets you browse tables, run queries, manage users, import and export data, and monitor server status with a point-and-click UI. […]
How to Install Redis on RHEL 7 Redis is an open-source, in-memory data structure store used as a database, cache, message broker, and streaming engine. Its sub-millisecond response times make it the go-to solution for session caching, real-time leaderboards, pub/sub messaging, and rate limiting in high-performance web applications. On RHEL 7, Redis is available through […]
How to Install MongoDB on RHEL 7 MongoDB is a document-oriented NoSQL database that stores data in flexible, JSON-like BSON documents rather than traditional rows and columns. Its schema-less design makes it an excellent choice for applications that need to handle varied or rapidly evolving data structures, such as content management systems, real-time analytics platforms, […]
How to Install PostgreSQL on RHEL 7 PostgreSQL is a powerful, open-source object-relational database system with over 30 years of active development. It is widely regarded as the most standards-compliant open-source SQL database, offering advanced features such as full ACID compliance, support for JSON and JSONB data types, table inheritance, robust indexing mechanisms, and a […]
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