Myenv on FromDual GmbH

MariaDB and MySQL Database Consolidation

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 14 Mar 2019 23:05:40 +0000

We see at various customers the request for consolidating their MariaDB and MySQL infrastructure. The advantage of such a measure is clear in the first step: Saving costs! And this request comes typically from managers. But what we unfortunately see rarely is to question this request from the IT engineering perspective. Because it comes, as anything in life, with some “costs”. So, saving costs with consolidation on one side comes with “costs” for operation complexity on the other side.

FromDual Enterprise Tools License

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 18 Feb 2019 22:10:27 +0000

The FromDual Enterprise Tools are licensed under a FromDual commercial license. The one exception is MyEnv which is licensed under GPLv2.

Multi-Instance set-up with MySQL Enterprise Server 5.7 on RHEL 7 with SystemD

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 26 Oct 2016 22:15:02 +0000

In our current project the customer wants to install and run multiple MySQL Enterprise Server 5.7 Instances on the same machine (yes, I know about virtualization (we run on kvm), containers, Docker, etc.). He wants to use Redhat Enterprise Linux (RHEL) 7 which brings the additional challenge of SystemD. So mysqld_multi is NOT an option any more.

Multiple MySQL Instances on a Single Machine

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 28 Jul 2016 13:11:03 +0000

Typically, on a single machine (be it a physical or a virtual one) only a single MySQL instance (process) is running. This is perfectly ok for all those situations where a single instance is sufficient, like for storing small amounts of data (RedHat using MySQL for postfix, KDE using it for akonadi, …), as well as those where a dedicated machine per MySQL instance is appropriate (high CPU load, memory fully loaded, availability requirements).

How to install multiple MySQL instances on a single host using MyEnv?

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 16 Oct 2014 16:36:51 +0000

We have been asked several times by MySQL users about how to install multiple MySQL instances on a single host.
Typically, this is required when testing different MySQL versions or MySQL servers (MySQL server, Percona server and MariaDB server) while no available resources are available.
Sometimes, it is even required to install multiple MySQL instances on a single production server.

FromDual: Tools for MySQL and Galera - Backup - Monitoring - Operations

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sun, 27 Jul 2014 10:46:18 +0000

FromDual tools provide valuable additional functionality which facilitate and optimize daily operations of your MySQL databases. Since our last newsletter a lot of things have changed in the FromDual tools.

What are the costs of one hour MySQL downtime?

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 17 Dec 2013 14:59:10 +0000

Hello,

there are companies which earn tens of thousands of Euros per hour with their MySQL databases. Other companies operate their ERP system on MySQL, to which 1000 employees are attached to. Is the database down 1000 people are not working any more until the system is working again! Downtime costs starting at EUR 30'000.- per hour upwards.

License for MyEnv

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 06 Dec 2013 21:57:57 +0000

Hi there! I am working on a project where I will most likely be using MyEnv (oh how I wish I had known of this the last time I set up mysqld_multi). I have added one feature already and have a few bug and performance fixes as well. My questions: Is there a license for MyEnv? If no, can you include one? Also, would you like me to pass my changes upstream? If so, how would be the best way. Mantis? Related to the licensing questions, would it be acceptable for redistribution with my changes? (eg. a public GitHub repository). Thanks for writing MyEnv, it’s going to make this project far more polished without having to use mysqld_multi again.

Workbench starting/stopping multiple instance set-ups with myenv

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 23 Nov 2013 16:03:08 +0000

Introduction

MySQL Workbench is a very good and free GUI tool provided by Oracle to manage MySQL administration and development tasks. Opening many MySQL connections (same or different instances, remote or local MySQL servers) at the same time is one of its main features. While it’s working fine to perform SQL statements on the different connections opened for multiple instances, but some people are asking if it is available as well to start and stop multiple MySQL instances using MySQL Workbench? if yes, how to configure it to perform such task? and also does that make any conflict with MyEnv tool - if it’s installed - or not? Yes, MySQL Workbench could be configured to start and stop multiple MySQL instances (local or remote) and it does not make any conflict with MyEnv tool.

MariaDB/MySQL Environment MyEnv 3.0.0 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 23 Mar 2026 17:42:00 +0100

FromDual has the pleasure to announce the release of the new version 3.0.0 of its popular MariaDB, MySQL and PostgreSQL multi-instance environment MyEnv.

Someone is deleting my shared memory segments!

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sun, 08 Feb 2026 06:27:00 +0100

When we work with PostgreSQL under our myEnv, we regularly get shared memory segment errors. Example:

MariaDB/MySQL Environment MyEnv 2.1.1 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 12 Dec 2025 17:43:00 +0100

FromDual has the pleasure to announce the release of the new version 2.1.1 of its popular MariaDB, Galera Cluster and MySQL multi-instance environment MyEnv.

MariaDB/MySQL Environment MyEnv 2.1.0 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 28 Feb 2024 17:22:29 +0100

FromDual has the pleasure to announce the release of the new version 2.1.0 of its popular MariaDB, Galera Cluster and MySQL multi-instance environment MyEnv.

MyEnv Release Notes

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 28 Feb 2024 16:51:26 +0100

MyEnv 3.0.0 Release Notes, Release Date: 23 March 2026
MyEnv 2.1.1 Release Notes, Release Date: 12 December 2025
MyEnv 2.1.0 Release Notes, Release Date: 28 February 2024
MyEnv 2.0.3 Release Notes, Release Date: 2 July 2021
MyEnv 2.0.2 Release Notes, Release Date: 17 January 2019
MyEnv 2.0.1 Release Notes, Release Date: 3 October 2018
MyEnv 2.0.0 Release Notes, Release Date: 15 March 2018
MyEnv 1.3.1 Release Notes, Release Date: 3 August 2016
MyEnv 1.3.0 Release Notes, Release Date: 31 January 2016
MyEnv 1.2.2 Release Notes, Release Date: 12 October 2015
MyEnv 1.2.1 Release Notes, Release Date: 27 July 2015
MyEnv 1.2.0 Release Notes, Release Date: 18 April 2015
MyEnv 1.1.4 Release Notes, Release Date: 11 February 2015
MyEnv 1.1.3 Release Notes: Skipped, see v1.1.4, Release Date: 30 January 2015
MyEnv 1.1.2 Release Notes, Release Date: 23 October 2014
MyEnv 1.1.1 Release Notes, Release Date: 8 September 2014
MyEnv 1.1.0 Release Notes, Release Date: 23 August 2014
MyEnv 1.0.5 Release Notes, Release Date: 13 June 2014
MyEnv 1.0.4 Release Notes, Release Date: 29 April 2014
MyEnv 1.0.3 Release Notes, Release Date: 25 April 2014
MyEnv 1.0.2 Release Notes, Release Date: 11 December 2013
MyEnv 1.0.1 Release Notes, Release Date: 5 November 2013
MyEnv 1.0 Release Notes, Release Date: 4 October 2013
MyEnv 0.4 Release notes: none, Release Date: 30 March 2011
MyEnv 0.3.6 Release notes: none, Release Date: 23 January 2011
MyEnv 0.3.5 Release notes: none, Release Date: 22 January 2011
MyEnv 0.3.4 Release notes: none, Release Date: 21 November 2010
MyEnv 0.3.3 Release notes: none, Release Date: 21 November 2010
MyEnv 0.3.2 Release notes: none, Release Date: 14 November 2010
MyEnv 0.3.1 Release notes: none, Release Date: 14 November 2010
MyEnv 0.3 Release notes: none, Release Date: 13 November 2010
MyEnv 0.2.7 Release notes: none, Release Date: 12 August 2010
MyEnv 0.2.6 Release notes: none, Release Date: 12 August 2010
MyEnv 0.2.5 Release notes: none, Release Date: 12 August 2010
MyEnv 0.2.4 Release notes: none, Release Date: 12 August 2010
MyEnv 0.2.3 Release notes: none, Release Date: 19 January 2010
MyEnv 0.2.2 Release notes: none, Release Date: 7 January 2010
MyEnv 0.2.1 Release notes: none, Release Date: 31 December 2009
MyEnv 0.2 Release notes: none, Release Date: 24 December 2009
MyEnv 0.1.1 Release notes: none, Release Date: 18 July 2008
MyEnv 0.1 Release notes: none, Release Date: 18 July 2008

MariaDB/MySQL Environment MyEnv 2.0.3 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 02 Jul 2021 15:32:28 +0200

FromDual has the pleasure to announce the release of the new version 2.0.3 of its popular MariaDB, Galera Cluster and MySQL multi-instance environment MyEnv.

MariaDB/MySQL Environment MyEnv 2.0.2 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 17 Jan 2019 19:35:51 +0100

FromDual has the pleasure to announce the release of the new version 2.0.2 of its popular MariaDB, Galera Cluster and MySQL multi-instance environment MyEnv.

MariaDB/MySQL Environment MyEnv 2.0.1 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 03 Oct 2018 09:06:54 +0200

FromDual has the pleasure to announce the release of the new version 2.0.1 of its popular MariaDB, Galera Cluster and MySQL multi-instance environment MyEnv.

MySQL Environment MyEnv 2.0.0 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 15 Mar 2018 21:33:51 +0100

FromDual has the pleasure to announce the release of the new version 2.0.0 of its popular MySQL, Galera Cluster and MariaDB multi-instance environment MyEnv.

MySQL Environment MyEnv 1.3.1 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 03 Aug 2016 08:27:06 +0200

FromDual has the pleasure to announce the release of the new version 1.3.1 of its popular MySQL, Galera Cluster, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.3.0 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sun, 31 Jan 2016 12:34:27 +0100

FromDual has the pleasure to announce the release of the new version 1.3.0 of its popular MySQL, Galera Cluster, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.2.2 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 12 Oct 2015 17:48:27 +0200

FromDual has the pleasure to announce the release of the new version 1.2.2 of its popular MySQL, Galera Cluster, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.2.1 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 27 Jul 2015 16:11:34 +0200

FromDual has the pleasure to announce the release of the new version 1.2.1 of its popular MySQL, Galera Cluster, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.2.0 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 18 Apr 2015 15:30:21 +0200

FromDual has the pleasure to announce the release of the new version 1.2.0 of its popular MySQL, Galera Cluster, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.1.4 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 11 Feb 2015 08:18:05 +0100

FromDual has the pleasure to announce the release of the new version 1.1.4 of its popular MySQL, Galera Cluster, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.1.2 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 23 Oct 2014 22:26:27 +0200

FromDual has the pleasure to announce the release of the new version 1.1.2 of its popular MySQL, Galera, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.1.1 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 08 Sep 2014 08:29:50 +0200

FromDual has the pleasure to announce the release of the new version 1.1.1 of its popular MySQL, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.1.0 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 23 Aug 2014 19:46:49 +0200

FromDual has the pleasure to announce the release of the new version 1.1.0 of its popular MySQL, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.0.5 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 13 Jun 2014 18:29:13 +0000

FromDual has the pleasure to announce the release of the new version 1.0.5 of its popular MySQL, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.0.4 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 29 Apr 2014 11:24:47 +0000

FromDual has the pleasure to announce the release of the new version 1.0.4 of its popular MySQL, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.0.3 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 25 Apr 2014 18:55:52 +0000

FromDual has the pleasure to announce the release of the new version 1.0.3 of its popular MySQL, MariaDB and Percona Server multi-instance environment MyEnv.

MySQL Environment MyEnv 1.0.2 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 11 Dec 2013 15:58:43 +0000

FromDual has the pleasure to announce the release of the new version 1.0.2 of its popular multi-instance MySQL Environment MyEnv.

MySQL Environment MyEnv 1.0.1 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 05 Nov 2013 16:03:55 +0100

FromDual has the pleasure to announce the release of the new version 1.0.1 of its popular multi-instance MySQL Environment MyEnv.

MySQL Environment MyEnv 1.0 has been released

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 04 Oct 2013 19:45:38 +0200

FromDual has the pleasure to announce the release of the new version 1.0 of its popular multi-instance MySQL Environment MyEnv.

MyEnv for MySQL Multi-Database set-ups

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sun, 14 Nov 2010 17:22:30 +0100

This week I showed one of my customers our MyEnv. He was very interested in it and suggested to make it known in public. In fact MyEnv is available for download already several years…

MyEnv (MySQL and MariaDB BasEnv)

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 20 Mar 2007 17:14:00 +0100

What is MyEnv?

FromDual MyEnv is a database environment to run and operate several different MariaDB, MySQL or PostgreSQL database instances simultaneously on the SAME machine. You can even run multiple database instances with different binary versions. We call this multi-instance set-ups.