Upgrade on FromDual GmbH

How to downgrade MariaDB or MySQL

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 21 May 2024 09:54:14 +0000

On this page we have summarised information about downgrading a MariaDB/MySQL database. We do not cover migrating from MySQL to MariaDB or vice versa. For migrations (sidegrade) please look here: MySQL - MariaDB migration and here: Migration between MySQL/Percona Server and MariaDB.

Upgrading MariaDB to the pre-latest minor release

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 08 Feb 2023 13:45:30 +0000

Scenario: MariaDB Community Server is release every 3 months. The exact date is not known but it is typically about 2 to 3 weeks after the MySQL/Oracle CPU.

MariaDB Galera Cluster Upgrade Path

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 18 Dec 2020 10:47:51 +0000

Because we conduct many customers in MariaDB Galera Cluster upgrades and because these customers sometimes have pretty old MariaDB Galera Cluster set-ups I think it is good to have a rough MariaDB Galera Cluster Upgrade Path.

Upgrading from MariaDB 10.4 to MariaDB 10.5 Galera Cluster

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 21 Nov 2020 20:58:09 +0000

Because upgrading from MariaDB 10.4 to MariaDB 10.5 (non-clustered) seems not to be a problem
[ 1
] we take the challenge and try to create a receipt based on the MariaDB 10.3 to MariaDB 10.4 Galera Cluster upgrade documentation
[ 3
]:

MariaDB and MySQL package holding or locking

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 07 Aug 2020 16:02:24 +0000

Repositories from your favourite Linux distribution and from your favourite database software vendor get regular package updates. If you do periodic system upgrades (for example every 2 weeks as we do) you get the newest packages of a release series.
Unfortunately recently the software vendors started not only to fix bugs in new releases but also to introduce new features. And when you fix bugs or introduce new stuff new bugs might appear.
To avoid being hit unexpectedly by new bugs you do not want to upgrade untested software. To achieve this you want to keep/not upgrade some important packages. For example the MariaDB or MySQL server package.
This package pinning is called package version lock on CentOS and Redhat and package holding on Debian and Ubuntu.

Migration from MySQL 5.7 to MariaDB 10.4

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 30 Nov 2019 14:17:48 +0000

Up to version 5.5 MariaDB and MySQL can be considered as “the same” databases. The official wording at those times was “drop-in-replacement”. But now we are a few years later and times and features changed. Also the official wording has slightly changed to just “compatible”.
FromDual recommends that you consider MariaDB 10.3 and MySQL 8.0 as completely different database products (with some common roots) nowadays. Thus you should work and act accordingly.

MariaDB and MySQL Character Set Conversion

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 17 Aug 2019 21:50:15 +0000

Introduction

Recently we had a consulting engagement where we had to help the customer to migrate from latin1 Character Set to utf8mb4 Character Set. In the same MySQL consulting engagement we considered to upgrade from MySQL 5.6 to MySQL 5.7 as well
[ Lit.
]. We decided to split the change in 2 parts: Upgrading to 5.7 in the first step and converting to uft8mb4 in the second step. There were various reasons for this decision:

MySQL - MariaDB migration

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sun, 07 Apr 2019 21:37:32 +0000

More and more MySQL users want to switch from MySQL/Percona Server to MariaDB over time or, more rarely, the other way around. This is mostly caused by the change of the default in the Linux Distributions (RHEL/CentOS 7, SLES 12, Debian 8) to MariaDB.
Up to MySQL/MariaDB 5.5 everything was quite easy, both Branches claim to be a drop-in replacement of each other. But after the separation into different forks (MariaDB 10.0 ff. vs. MySQL 5.6 ff.) we expect more and more problems migrating from one branch to the other what we call sidegrade.
Percona Server code is genetically closer to MySQL than MariaDB. So we expect to see less problems on this sidegrade.

Upgrade MySQL 5.7 to MySQL 8.0

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 05 Feb 2019 14:30:52 +0000

Early adopters of our customers are considering to upgrade to MySQL 8.0. To be prepared we have created a check-list:

Oracle releases MySQL security vulnerability fixes 2018-01

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 17 Jan 2018 11:27:28 +0000

As in every quarter of the year Oracle has released yesterday its recommendation for the MySQL security updates. This is called, in Oracle terminology, Critical Patch Update (CPU) Advisory.

Migration between MySQL/Percona Server and MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 08 Oct 2014 21:40:16 +0000

This week, we did some migrations from MariaDB 10.0 to Percona Server 5.6 at the IT department of a big German bank.

Upgrade from Galera Cluster 2.x to 3.0

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 24 Oct 2013 21:25:22 +0000

Introduction

Codership announced from weeks ago introducing the Galera Cluster new release 3.0 having many bug fixes, performance enhancements plus the main purpose which is working with MySQL 5.6. In this article, I’ll go through the upgrade steps from Galera 2.x to the new release 3.0, but at the time of writing this article - as mentioned in the Codership release notes - THIS IS A BETA QUALITY RELEASE FOR TESTING PURPOSES. NOT RECOMMENDED FOR PRODUCTION YET.

MySQL and MariaDB Security

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 18 Jan 2013 09:27:09 +0000

Overview

MySQL Security Products

Database Firewall: GreenSQL
MySQL Database Security: McAfee

Useful Security Links

STIG Update: DISA releases the MariaDB Enterprise 10.x Security Technical Implementation Guide
OWASP: Database Security Cheat Sheet
CIS MySQL 4.1/5.0/5.1 Benchmark (v1.0.2)
CIS Oracle MySQL Community Server 5.6 Benchmark (v1.1.0)
CIS Oracle MySQL Community Server 5.7 Benchmark (v1.0.0)
CIS Oracle MySQL Enterprise Edition 5.6 Benchmark (v1.1.0)
CIS Oracle MySQL Enterprise Edition 5.7 Benchmark (v1.0.0)
MySQL Documentation: Security
BSI certified database servers
CVE Details
RHSA-2013:0121-1
RHSA-2012:1462-1
full-disclosure@lists.grok.org.uk
MySQL Security Forum
MySQL SQL Injection Cheat Sheet

Security Vulnerabilities Fixed in MariaDB

Oracle Critical Patch Update (CPU) Advisory for MySQL

Oracle Critical Patch Update Advisory - Overview
Oracle Critical Patch Update Advisory - October 2024 (45 fixes / 9.1 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2024 (37 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2024 (36 fixes / 7.5 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2024 (40 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2023 (37 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2023 (24 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2023 (34 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2023 (37 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2022 (37 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2022 (34 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2022 (43 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2022 (78 fixes / 7.5 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2021 (66 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2021 (41 fixes / 8.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2021 (49 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2021 (43 fixes / 7.5 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2020 (53 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2020 (40 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2020 (45 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2020 (19 fixes / 7.5 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2019 (34 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2019 (45 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2019 (45 fixes / 7.5 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2019 (30 fixes / 9.1 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2018 (38 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2018 (31 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2018 (33 fixes / 7.7 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2018 (25 fixes / 8.1 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2017 (25 fixes / 8.8 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2017 (30 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2017 (39 fixes / 10.0 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2017 (27 fixes / 8.8 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2016 (31 fixes / 7.5 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2016 (22 fixes / 8.1 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2016 (31 fixes / 9.8 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2016 (22 fixes / 7.2 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2015 (30 fixes / 9.0 max score), verbose text form
Oracle Critical Patch Update Advisory - July 2015 (18 fixes / 6.5 max score), verbose text form
Oracle Critical Patch Update Advisory - April 2015 (26 fixes / 10.0 max score), verbose text form
Oracle Critical Patch Update Advisory - January 2015 (9 fixes / 7.5 max score), verbose text form
Oracle Critical Patch Update Advisory - October 2014 (24 fixes / 8.0 max score)
Oracle Critical Patch Update Advisory - July 2014 (10 fixes / 6.5 max score)
Oracle Critical Patch Update Advisory - April 2014 (14 fixes / 6.5 max score)
Oracle Critical Patch Update Advisory - January 2014 (18 fixes / 10.0 max score)
Oracle Critical Patch Update Advisory - October 2013 (8 fixes / 8.5 max score)
Oracle Critical Patch Update Advisory - July 2013 (18 fixes / 6.8 max score)
Oracle Critical Patch Update Advisory - April 2013 (25 fixes / 6.8 max score)
Oracle Critical Patch Update Advisory - January 2013 (18 fixes / 9.0 max score)
Oracle Critical Patch Update Advisory - October 2012 (15 fixes / 9.0 max score)
Oracle Critical Patch Update Advisory - July 2012 (6 fixes / 6.8 max score)
Oracle Critical Patch Update Advisory - April 2012 (6 fixes / 6.8 max score)
Oracle Critical Patch Update Advisory - January 2012 (27 fixes / 5.5 max score)

RedHat/CentOS vulnerabilities by CVE name

Red Hat vulnerabilities by CVE name for MySQL

Rolling upgrade of Galera 1.0 to 1.1

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 14 Dec 2011 15:38:27 +0000

A few days ago Codership announced their new version Galera v1.1 - synchronous Replication Cluster for MySQL. Before we look at the new feature of Rolling Online Schema Upgrade (OSU) we have a look at how to upgrade to the new Galera release.

MySQL licenses for dummies

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 23 Dec 2008 12:03:00 +0000

The following summary shows my personal understanding of MySQL 5.1 licenses, packages and products. It does not necessarily reflect 100% the way MySQL understands it. But after all the discussions I hope it is as close as possible to the reality:

MariaDB and MySQL Upgrade Problems

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 08 Sep 2011 20:09:25 +0200

Reasons to Upgrade MariaDB or MySQL
How to Upgrade MariaDB or MySQL
MariaDB and MySQL Reserved Keywords
MariaDB and MySQL Upgrade Problems we hit in real life
Migration between MySQL, MariaDB and Percona Server
Migration from MyISAM to InnoDB
Migration from MyISAM to Aria
Switching from Statement Based Replication (SBR) to Row Based Replication (RBR)
Switching from non-partitioned to partitioned tables
Switching from MariaDB or MySQL to Galera
Convert from latin1 Character Set to utf8mb4 Character Set

Downgrading MariaDB and Downgrading MySQL (for 5.7 and older).

Upgrade on FromDual GmbH

How to downgrade MariaDB or MySQL

Upgrading MariaDB to the pre-latest minor release

MariaDB Galera Cluster Upgrade Path

Upgrading from MariaDB 10.4 to MariaDB 10.5 Galera Cluster

MariaDB and MySQL package holding or locking

Migration from MySQL 5.7 to MariaDB 10.4

MariaDB and MySQL Character Set Conversion

Table of Contents

Introduction

MySQL - MariaDB migration

Table of Contents

Upgrade MySQL 5.7 to MySQL 8.0

Oracle releases MySQL security vulnerability fixes 2018-01

Migration between MySQL/Percona Server and MariaDB

Upgrade from Galera Cluster 2.x to 3.0

Table of Contents

Introduction

MySQL and MariaDB Security

Overview

MySQL Security Products

Useful Security Links

Security Vulnerabilities Fixed in MariaDB

Oracle Critical Patch Update (CPU) Advisory for MySQL

RedHat/CentOS vulnerabilities by CVE name

Rolling upgrade of Galera 1.0 to 1.1

MySQL licenses for dummies

MariaDB and MySQL Upgrade Problems

Table of Contents