Mariadb on FromDual GmbH

Attribute promotion and demotion in the MariaDB Galera Cluster

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 28 Nov 2025 16:26:48 +0000

In MariaDB master/slave replication there is a feature called attribute promotion/demotion.

MariaDB Honeypot

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 06 Mar 2025 09:50:18 +0000

In our MariaDB advanced training courses, which we hold approximately every two months, we use machines that are directly exposed to the Internet with a public IP address. Warning: You should NEVER expose a database directly to the Internet without protection! Typically, it takes less than 72 hours (3 days) before we are exposed to the first external access attempts.

Playing with MariaDB Vector for initial AI tests

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 28 Aug 2024 10:51:23 +0000

Artificial intelligence (AI) and vector databases are on everyone’s lips these days. Since MariaDB will soon be coming onto the market with vector database functionality, as a database consultant I thought it was about time I got to grips with the subject so that I have at least a hint of what it’s all about…

MariaDB's parallel replication to catch up

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 09 Apr 2024 10:53:32 +0000

Due to an application error, our replication stopped for 5 days (over Easter). After the problem was solved, the replication was supposed to catch up, which turned out to be very slow. All the usual tricks (innodb_flush_log_at_trx_commit, sync_binlog, etc.) had already been exhausted. So we tried our hand at parallel replication of the MariaDB server.

Building MariaDB Server from the sources

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 05 Apr 2024 08:47:13 +0000

Recently I had to test a new MariaDB feature that was developed at our request (MDEV-33782). To test this feature I had to build the MariaDB server myself from source, which I have not done for a long time. So a new challenge, especially with CMake…

MariaDB MaxScale Load Balancer with Master/Master Replication

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 13 May 2022 16:39:27 +0000

For this how-to we were working with a MariaDB 10.6.5 database server and the newest MariaDB MaxScale 6.3.0 (aka 2.6) load balancer/proxy.

MariaDB Enterprise Server vs. MariaDB Community Server

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 07 Apr 2021 21:48:47 +0000

MariaDB Enterprise Platform

The MariaDB Enterprise Platform is available on-premises and on the MariaDB SkySQL DBaaS (Cloud database platform). MariaDB Enterprise Platform consists of:

MariaDB configuration analysis

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 30 Mar 2021 10:38:06 +0000

If we do customers database configuration analysis we check on one side if the most important MariaDB server system variables (innodb_buffer_pool_size, …) are set appropriately but also if some MariaDB server system variables are configured completely wrong.

MariaDB or MySQL, that is the question

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 26 Mar 2021 16:23:32 +0000

Many customers come to us and ask us whether to use MariaDB or MySQL. The answer is not so simple. FromDual is a neutral and vendor independent MariaDB/MySQL consulting company. So we should not have (in the meaning of neutral) a clear preference. For us internally we have chosen our strategy according to some clearly defined criteria. But what we have chosen for us is not necessarily the right choice for you.

MariaDB sql_mode = 'oracle'

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 25 Mar 2021 20:15:22 +0000

MariaDB has some time ago introduced or reused the sql_mode = 'oracle'. What they basically try to do is to implement a subset of the Oracle PL/SQL language. Because we receive more and more request from customers about MariaDB’s Oracle PL/SQL it is worth investigating a bit more in this feature and summarize the state of the art of this topic in this article.

MariaDB Push Replication

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 11 Jan 2021 17:29:50 +0000

How to make MariaDB Pull Replication as secure as possible

A normal MariaDB Replication is a Pull Replication. This means that a Slave connects to its Master and gathers or better requests Binary Log information from the Master and applies them in a streaming way.

Traffic mirroring with MariaDB MaxScale

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 24 Dec 2020 16:27:33 +0000

Recently we had the case that a customer claimed that MariaDB 10.3 Binary Log is using 150% more space on disk than MySQL 5.7 Binary Log. Because I never observed something similar, but to be honest, I did not look to intensively for this situation, we had to do some clarifications.

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 MaxScale Configuration Variables

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 04 Nov 2020 22:49:39 +0000

Global Options

Variable	Versions					Values	Default	Unit	Comment
threads	1.4		2.3	2.4	2.5	{ <n> \| auto }	1	thread
thread_stack_size		2.2				<n>			Ignored and deprecated in 2.3
rebalance_period					2.5	<n>	0	second
rebalance_threshold					2.5	<n>	20	delta load
rebalance_window					2.5	<n>	10	second
auth_connect_timeout	1.4	2.2	2.3	2.4		<n>	3	second
auth_read_timeout	1.4	2.2	2.3	2.4		<n>	1	second	Deprecated in 2.5
auth_write_timeout	1.4	2.2	2.3	2.4		<n>	2	second	Deprecated in 2.5
query_retries			2.3	2.4	2.5	<n>	1	time	Added in 2.1.10, disabled by default until 2.3.0
query_retry_timeout			2.3	2.4	2.5		5
passive			2.3	2.4	2.5		false
ms_timestamp	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0	-
skip_permission_checks			2.3	2.4	2.5	{ 0 \| 1 }	0
syslog	1.4		2.3	2.4	2.5	{ 0 \| 1 }	1	-
maxlog	1.4		2.3	2.4	2.5	{ 0 \| 1 }	1	-
log_to_shm	1.4					{ 0 \| 1 }	0	-	Deprecated and ignored in 2.3.0 and newer
log_warning	1.4		2.3	2.4	2.5	{ 0 \| 1 }	1	-
log_notice	1.4		2.3	2.4	2.5	{ 0 \| 1 }	1	-
log_info	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0	-
log_debug	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0	-
log_warn_super_user					2.5		false
log_messages									Deprecated, use log_notice instead
log_trace									Deprecated, use log_info instead
log_augmentation	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0	-
log_throttling			2.3	2.4	2.5	{ <n>, <n>, <n> }	10, 1000, 10000	time, millisecond, millisecond
logdir	1.4		2.3	2.4	2.5	<dirpath>	/tmp/	-
datadir	1.4		2.3	2.4	2.5	<dirpath>	/home/user/maxscale_data/	-
libdir	1.4		2.3	2.4	2.5	<dirpath>	/home/user/lib64/	-
cachedir	1.4		2.3	2.4	2.5	<dirpath>	/tmp/maxscale_cache/	-
piddir	1.4		2.3	2.4	2.5	<dirpath>	/tmp/maxscale_cache/	-
execdir	1.4		2.3	2.4	2.5	<dirpath>	/usr/local/bin/	-
connector_plugindir			2.3	2.4	2.5	<dirpath>	/usr/lib/plugin/
persistdir			2.3	2.4	2.5	<dirpath>	/var/lib/maxscale/maxscale.cnf.d/
module_configdir			2.3	2.4	2.5	<dirpath>	/var/lib/maxscale/
language	1.4		2.3	2.4	2.5	<dirpath>	/home/user/lang/	-
query_classifier			2.3	2.4	2.5	<classifier>	qc_sqlite
query_classifier_cache_size			2.3	2.4	2.5	<n>	15% of system Memory	byte
query_classifier_args			2.3	2.4	2.5
substitute_variables			2.3	2.4	2.5	{ true \| false }	false
sql_mode			2.3	2.4	2.5	{ default \| oracle }	default
local_address			2.3	2.4	2.5	<IP address>	*
users_refresh_time			2.3	2.4	2.5	<n>	30	second
user_refresh_interval				2.4	2.5	<n>	0	second
retain_last_statements			2.3	2.4	2.5	<n>	0	statement
dump_last_statements			2.3	2.4	2.5	{ on_error \| on_close \| never }	never	-
session_trace			2.3	2.4	2.5	<n>	0	statement
writeq_high_water			2.3	2.4	2.5
writeq_low_water			2.3	2.4	2.5
load_persisted_configs			2.3	2.4	2.5	{ 0 \| 1 }	1
max_auth_errors_until_block				2.4	2.5	<n>	10
debug					2.5
admin_host			2.3	2.4	2.5	<IP address>	127.0.0.1
admin_port			2.3	2.4	2.5	<n>	8989
admin_auth			2.3	2.4	2.5		1
admin_ssl_key			2.3	2.4	2.5
admin_ssl_cert			2.3	2.4	2.5
admin_ssl_ca_cert			2.3	2.4	2.5
admin_enabled			2.3	2.4	2.5	{ 0 \| 1 }
admin_gui					2.5		1
admin_secure_gui					2.5
admin_log_auth_failures				2.4	2.5	{ 0 \| 1 }	1
admin_pam_readwrite_service				2.4	2.5
admin_pam_readonly_service				2.4	2.5

Service Options

Variable	Versions					Values	Default	Unit	Comment
type	1.4		2.3	2.4	2.5	service		-
router	1.4		2.3	2.4	2.5	{ readconnroute \| readwritesplit \| schemarouter \| binlogrouter }		-
router_option	1.4		2.3	2.4	2.5	{ slave \| master,slave }		-
filters	1.4		2.3	2.4	2.5	{ counter \| QLA }		-
targets					2.5	{ server \| service, ... }
servers	1.4		2.3	2.4	2.5	{ <server1>, <server2>, ... }		-
cluster				2.4	2.5	<name>
user	1.4		2.3	2.4	2.5	{ <username> }		-
passwd	1.4		2.3	2.4	2.5	{ <password> }		-
enable_root_user	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0	-
localhost_match_wildcard_host	1.4		2.3	2.4		{ 0 \| 1 }	0		Deprecated and ignored.
version_string	1.4		2.3	2.4	2.5	<string>	5.5.5-10.0.0 MaxScale <MaxScale version>
weightby	1.4		2.3	2.4		<server_weight>			Deprecated in 2.3 and removed in 2.5, use rank instead
auth_all_servers	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0
strip_db_esc	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0
optimize_wildcard	1.4			2.4		{ 0 \| 1 }	0
retry_on_failure	1.4		2.3			{ 0 \| 1 }	1		Ignored by 2.4 and removed in the future.
log_auth_warnings	1.4		2.3	2.4	2.5	{ 0 \| 1 }	0
connection_timeout	1.4		2.3	2.4	2.5	<n>		second
max_connections			2.3	2.4	2.5	<n>		connection
max_retry_interval		2.2	2.3	2.4		<n>	3600	second
session_track_trx_state			2.3	2.4	2.5		false		Only supported by MariaDB 10.3 and newer
retain_last_statements			2.3	2.4	2.5
connection_keepalive					2.5	<n>	300
net_write_timeout				2.4	2.5		0	second

Routing Modules

ReadConnRoute

For (weighted) load balancing.

MariaDB SQL Error Log Plugin

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 30 Jul 2020 12:26:18 +0000

When you are for too long in business you think you know already everything and you are getting lazy. This happened to me again a few weeks ago. A customer asked me about the SQL Error Log Plugin. First I though he was talking about the MariaDB Error Log or the General Query Log. But then I have learned that there is something “new” I did not know yet…

MariaDB PL/SQL Examples

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 04 Dec 2019 21:49:04 +0000

Before you start

SQL> SET SESSION sql_mode='ORACLE';

Infinite Loop Example

DELIMITER /

BEGIN

LOOP
 SELECT 'Hello world from MariaDB anonymous PL/SQL block!';
END LOOP; 

END;
/

DELIMITER ;

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 sys Schema

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 27 Jun 2019 12:25:08 +0000

The MySQL sys Schema is a cool thing and was mostly developed by Mark Leith and Jesper Wisborg Krogh from Oracle/MySQL. The sys Schema is based on the somehow cryptic MySQL PERFORMANCE_SCHEMA which was developed by Oracle/MySQL as well.

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.

MariaDB and MySQL consulting by plane

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 01 Mar 2019 15:27:06 +0000

Since January 2019 FromDual tries to contribute actively a little bit against global warming too.

MariaDB indexing of NULL values

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 29 Nov 2018 20:10:55 +0000

In the recent MariaDB DBA advanced training class the question came up if MariaDB can make use of an index when searching for NULL values… And to be honest I was not sure any more. So instead of reading boring documentation I did some little tests:

Select Hello World FromDual with MariaDB PL/SQL

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 12 Jun 2018 23:36:05 +0000

MariaDB 10.3 was released GA a few weeks ago. One of the features which interests me most is the MariaDB Oracle PL/SQL compatibility mode.

MariaDB at FromDual

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 06 Apr 2018 09:40:29 +0000

FromDual as a neutral and vendor independent database service company also provides various services for the MariaDB database.

MySQL sys Schema in MariaDB 10.2

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 22 Mar 2018 22:54:21 +0000

MySQL has introduced the PERFORMANCE_SCHEMA (P_S) in MySQL 5.5 and made it really usable in MySQL 5.6 and added some enhancements in MySQL 5.7 and 8.0.

MariaDB 10.2 New Features - Slides available

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 19 Mar 2018 11:50:04 +0000

The Chemnitz Linux Days 2018 in Chemnitz (Germany) 10/11 March 2018 are over for more than a week now and IMHO it was a huge success.

First Docker steps with MySQL and MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 24 Nov 2017 23:05:22 +0000

The Docker version of the distributions are often quite old. On Ubuntu 16.04 for example:

MariaDB Master/Master GTID based Replication with keepalived VIP

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 11 Nov 2017 11:29:29 +0000

Important: FromDual does NOT recommend to use an automated VIP failover technology as described below for a MariaDB/MySQL Master/Master Replication. In such a topology we recommend a manual VIP failover with prepared scripts!

Non-standard database set up with SELinux

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 13 Dec 2016 15:26:19 +0000

What is SELinux?

The Security-Enhanced Linux is an extension to the Linux Kernel, made by the NSA (National Security Agency). It implements Mandatory Access Controls (MAC), which allow an administrator to define, how applications and users can access resources on a system.

MySQL and MariaDB variables inflation

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 12 Dec 2016 21:43:42 +0000

MySQL is well known and widely spread because of its philosophy of Keep it Simple (KISS).

New Features in MySQL and MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 22 Nov 2016 15:45:48 +0000

As you probably know MySQL is an Open Source product licensed under the GPL v2. The GPL grants you the right to not just read and understand the code of the product but also to use, modify AND redistribute the code as long as you follow the GPL rules.

How to Install MySQL Enterprise Server 5.7 on Red Hat Enterprise Linux 7

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 24 Oct 2016 22:03:42 +0000

If you have already Red Hat Enterprise Linux 7 (RHEL 7) or CentOS 7 in use you probably found out, that it is not that easy to install MySQL Enterprise Server because there are already pre-installed MariaDB 5.5 libraries:

Differences between MySQL and MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 22 Apr 2016 08:45:05 +0000

max_user_connections Can be changed online in MySQL. Cannot be changed in MariaDB if value was set to 0.
PERFORMANCE_SCHEMA is enabled in MySQL 5.6 and 5.7 by default. In MariaDB disabled by default.
Replication incompatibilities from MariaDB (Master) to MySQL (Slave)
MariaDB 10.2.0 still contains XtraDB 5.6. So MySQL 5.7 features cannot be used.
MariaDB 10.2 Window Functions are missing in MySQL 5.7
SHOW PROCESSLIST has additional column Progress in MariaDB.
Progress indication in: mysqldump --progress-reports (default on) for MariaDB.
MariaDB 10.0 on CentOS 7 uses still SysV init script. MySQL 5.6 on CentOS 7 uses SystemD init script.
binlog_row_image is implemented in MySQL 5.6 and does not exist in MariaDB 10.0.
MariaDB 10.1 and older (containing XtraDB 5.6) does not provide flexible/general tablespaces yet which where introduced by MySQL 5.7.
EXPLAIN FOR CONNCECTION does exist in MySQL 5.7 and does not exist in MariaDB 10.1 or 10.2.

Other sources

MariaDB 10.2 Window Function Examples

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 18 Apr 2016 22:39:09 +0000

MariaDB 10.2 has introduced some Window Functions for analytical queries.

FromDual Nagios and Icinga plugins v1.0.1 for MySQL/MariaDB released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 23 Feb 2016 18:27:03 +0000

FromDual has the pleasure to announce the release of the new version 1.0.1 of the FromDual Nagios and Icinga plugins for MySQL, Galera Cluster and MariaDB.

MariaDB and MySQL developer training

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 29 Dec 2015 16:48:44 +0000

You are already a database application developer or on the way there. Now you would like to learn more about, what MySQL and MariaDB features are available which you can use later to build even better applications, to develop more efficiently applications and shorten your time to market.

MariaDB, Galera and MySQL training class schedule

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 29 Dec 2015 16:39:58 +0000

We offer our MySQL and MariaDB trainings together with well-respected training organizations: The Linuxhotel in Essen (Germany), the Heinlein Academy in Berlin (Germany) and GFU Cyrus AG in Cologne (Germany). Our own MySQL and MariaDB training classes are hold in the building of the HSO in Zürich (Switzerland).

MariaDB, Galera und MySQL training modules

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 29 Dec 2015 16:36:34 +0000

FromDual offers different MySQL, Galera Cluster and MariaDB training modules. For training dates see our MySQL and MariaDB training class schedule.

Download Performance Monitor

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 07 Aug 2015 15:41:50 +0000

FromDual Performance Monitor for MySQL and MariaDB including MaaS

The FromDual Performance Monitor for MySQL, Galera Cluster, MariaDB and Percona Server is a Monitoring solution based on Zabbix. Its various alerts, advisors and graphs help you to monitor and operate your MySQL databases. This solution is also available as Monitoring as a Service solution if you want to avoid the hassle of installing your own monitoring solution.

Migration from other databases to MySQL or MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 03 Jul 2015 08:32:31 +0000

Database migration tools

A generic database migration tool to MySQL and MariaDB is the MySQL Workbench.

Nagios and Icinga plugins for MySQL/MariaDB released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 04 Mar 2015 13:03:58 +0000

FromDual is pleased to announce the release of a new version 1.0.0 of the Nagios and Icinga plugins for MySQL, MariaDB, Percona Server and Galera Cluster.

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.

Mariadb on FromDual GmbH

Attribute promotion and demotion in the MariaDB Galera Cluster

MariaDB Honeypot

Playing with MariaDB Vector for initial AI tests

MariaDB's parallel replication to catch up

Building MariaDB Server from the sources

MariaDB MaxScale Load Balancer with Master/Master Replication

MariaDB Enterprise Server vs. MariaDB Community Server

MariaDB Enterprise Platform

MariaDB configuration analysis

MariaDB or MySQL, that is the question

MariaDB sql_mode = 'oracle'

MariaDB Push Replication

Table of Contents

How to make MariaDB Pull Replication as secure as possible

Traffic mirroring with MariaDB MaxScale

MariaDB Galera Cluster Upgrade Path

Upgrading from MariaDB 10.4 to MariaDB 10.5 Galera Cluster

MariaDB MaxScale Configuration Variables

Table of Contents

Global Options

Service Options

Routing Modules

ReadConnRoute

MariaDB SQL Error Log Plugin

MariaDB PL/SQL Examples

Table of Contents

Before you start

Infinite Loop Example

Migration from MySQL 5.7 to MariaDB 10.4

MariaDB sys Schema

MySQL - MariaDB migration

Table of Contents

MariaDB and MySQL consulting by plane

MariaDB indexing of NULL values

Select Hello World FromDual with MariaDB PL/SQL

MariaDB at FromDual

MySQL sys Schema in MariaDB 10.2

MariaDB 10.2 New Features - Slides available

First Docker steps with MySQL and MariaDB

MariaDB Master/Master GTID based Replication with keepalived VIP

Non-standard database set up with SELinux

What is SELinux?

MySQL and MariaDB variables inflation

New Features in MySQL and MariaDB

How to Install MySQL Enterprise Server 5.7 on Red Hat Enterprise Linux 7

Differences between MySQL and MariaDB

Other sources

MariaDB 10.2 Window Function Examples

FromDual Nagios and Icinga plugins v1.0.1 for MySQL/MariaDB released

MariaDB and MySQL developer training

MariaDB, Galera and MySQL training class schedule

MariaDB, Galera und MySQL training modules

Download Performance Monitor

FromDual Performance Monitor for MySQL and MariaDB including MaaS

Migration from other databases to MySQL or MariaDB

Database migration tools

Nagios and Icinga plugins for MySQL/MariaDB released

Migration between MySQL/Percona Server and MariaDB