This guide walks through upgrading a SpringBoot 2.3.0‑based mall project from Elasticsearch 6.x to 7.x, covering version selection, configuration changes, deprecation of ElasticsearchTemplate, code adjustments, and common runtime errors, while providing concrete code snippets and solutions.
This guide explains how to upgrade MySQL 5.6 instances to 5.7 on Windows by using the ZIP distribution and an in‑place upgrade, covering preparation, installation, required Visual C++ libraries, common pitfalls, troubleshooting steps, and a complete checklist of post‑upgrade actions.
This article provides a comprehensive, ordered procedure for upgrading a Zabbix 4.0 monitoring system to version 5.0 using blue‑green deployment, backing up configurations, updating repositories, applying MySQL patches, and then migrating the associated Elasticsearch cluster from 6.1 to 7.x, including all necessary command‑line steps, configuration edits, and post‑upgrade validation.
This article provides a comprehensive step‑by‑step guide for DBAs to safely upgrade MySQL from version 5.7 to 8.0, covering motivations, compatibility checks, new features, preparation tasks, upgrade commands, post‑upgrade verification, and rollback considerations.
The article analyzes a MySQL 5.7 upgrade that broke an application due to SSL being enabled by default in version 5.7.28, explains how the JDBC useSSL=true setting triggered handshake errors, and provides several practical solutions such as disabling SSL, adjusting auto‑generation settings, and updating the connection string.
A production MySQL 8.0.15 MGR cluster suffered from massive internal temporary‑table file leaks due to a known bug, which was diagnosed through log analysis and Oracle documentation and resolved by upgrading to MySQL 8.0.16, confirming the issue is version‑specific and not MGR‑related.
The Apache Hudi 0.5.1 release introduces upgraded Spark, Avro, Parquet and Kafka dependencies, new Scala support, timeline layout changes, CLI enhancements, DeltaStreamer parameter updates, Kafka offset enum revisions, key‑generator package relocation, Hive sync options, dynamic Bloom filter, bulk‑insert support, and AWS cloud storage compatibility.
Fedora 31 introduces GNOME 3.34, drops 32‑bit boot images, replaces Docker with podman, updates core packages like Glibc, NodeJS and Python, improves hardware support and flavors, and provides guidance on upgrading from earlier Fedora releases.
Ubuntu 19.10 “Eoan Ermine” introduces LZ4 fast‑boot compression, ZFS file‑system support, and GNOME 3.34, and the article explains key features, upgrade paths from earlier releases, download links, and alternative Ubuntu flavors, while warning against unsupported upgrade methods.
This tutorial explains how to prepare test data, migrate a SonarQube database from MySQL to PostgreSQL, upgrade SonarQube from 6.7.7 to 7.9.1 LTS, and verify that all project and user information is retained, including all required shell commands and configuration steps.
Starting with MySQL 8.0.17, Group Replication introduces patch‑level version compatibility policies that govern primary‑member election, write‑ability, donor selection, and upgrade procedures for mixed‑version clusters, ensuring safe operation during rolling upgrades and multi‑primary mode transitions.
This guide explains why Google’s 64‑bit requirement forces a React Native upgrade, outlines the benefits of moving to version 0.59.10, and provides step‑by‑step instructions for updating iOS, Android, Babel configuration, native modules, and handling deprecated components and API changes.
Starting with MySQL 8.0.16, the traditional mysql_upgrade command is deprecated and replaced by a new server upgrade method using the --upgrade option, which offers faster, simpler, and safer upgrades without restarting, and provides four modes (NONE, AUTO, MINIMAL, FORCE) to control data dictionary and system table updates.
Elasticsearch 7.0 replaces Zen Discovery with an automatic, quorum‑based cluster‑coordination subsystem that elects master‑eligible nodes, simplifies bootstrapping via cluster.initial_master_nodes, supports safe rolling upgrades, and provides robust fault tolerance through a consensus protocol similar to Paxos or Raft.
This article outlines the practical experience of upgrading MySQL from version 5.7 to 8.0, detailing version requirements, the specific upgrade tasks, step‑by‑step procedures, and important considerations such as deprecated sql_mode settings, character set handling, and lower_case_table_names consistency.
This tutorial walks through adding the Zabbix repository, installing MySQL 5.7, configuring Nginx and PHP, setting up Zabbix server, agent, and web interface, and finally upgrading Zabbix from 4.0 to 4.2 on a CentOS 7 environment.
The Linux 4.20 kernel series has reached its final release with version 4.20.17, and maintainer Greg Kroah‑Hartman urges users to migrate to the newer 5.0 series or a supported LTS kernel, outlining the series' features, hardware support, and upgrade paths.
Create React App 2.0, launched on October 1, updates core tools like Babel, Webpack, and Jest, adds Sass, CSS Modules, SVG components, optional Service Workers, and provides a clear migration path for both new and existing projects, while supporting modern browsers and optional polyfills.
This article shares the practical experience, new features, component changes, migration steps, and pitfalls encountered while upgrading an old Spring Boot 1.x backend to Spring Boot 2.0, offering guidance for a smoother transition and highlighting post‑upgrade issues such as path matching, HTTP PUT handling, and Swagger compatibility.
This article walks through a gray‑scale, controlled upgrade of Hive from version 0.13 to 2.1, covering metadata schema analysis, syntax compatibility, new Hive‑2.1 features, UDF adjustments, performance tweaks, and a step‑by‑step procedure to ensure stability and zero service interruption.
This article traces Spring’s evolution from its early IOC/AOP roots to the rise of Spring Boot, explains the key features of Spring Boot 2.0, outlines Java version and dependency requirements, and provides practical guidance for migrating existing Spring Boot 1.x projects to 2.0.
This article provides a comprehensive overview of PHP 7.2's upgrade changes, detailing backward‑incompatible core modifications, new language and extension features, deprecated functions, altered behaviours, added functions and classes, removed extensions, and updated INI and Windows support, all essential for backend developers.
This guide walks you through upgrading Transwarp Data Hub Community Edition—covering application market checks, version selection, upgrade modes, required scripts, configuration parameters, pre‑upgrade checks, execution commands, and rollback procedures—to ensure a smooth, automated upgrade with minimal downtime.
This guide walks you through the fundamentals of Linux kernel upgrades, covering kernel anatomy, compilation steps, configuration tuning, kernel migration, and creating RPM packages for streamlined, reliable updates across multiple servers.
This article walks you through the complete process of upgrading the Linux kernel—explaining kernel fundamentals, compilation steps, configuration tuning, packaging as RPM, and deployment across multiple servers—to achieve efficient, reliable, and elegant kernel updates in production environments.
This article details the HULK team's experience upgrading their private‑cloud OpenStack environment from Kilo to Mitaka, covering background, risk‑benefit analysis, preparation, step‑by‑step procedures, common pitfalls, and practical solutions, offering actionable guidance for similar OpenStack migrations.
This guide from the 360DBA team explains how to select the appropriate MongoDB PHP driver version based on PHP and server releases, shares real‑world case studies of version issues, and provides step‑by‑step instructions for downloading, compiling, installing, and verifying the driver.
Next Wednesday the Node.js team will release security updates for several versions, fixing critical TLS certificate handling flaws and other vulnerabilities, while announcing the end of maintenance for the v0.10.x line and urging users to upgrade to newer releases.
This article walks through a real‑world upgrade from SQL Server 2008 R2 to 2014, detailing background analysis, data collection, solution design, detailed investigation, testing, performance baselines, side‑by‑side migration, cluster setup, application changes, and common pitfalls such as CDC issues, index‑rebuild logging, and query slowdowns.
The article explains the growing trend of containerizing OpenStack, describes how projects like Kolla achieve this, and outlines the advantages such as easier upgrades, greater flexibility, simplified configuration management, reduced OS vendor lock‑in, faster deployment, and improved monitoring and innovation.
