InnoDB Cluster is major revolution for MySQL Replication but it is often hard to test out new technologies without a major investment in time, hardware, and frustration.  But what if there was a quick and easy way to set up a test InnoDB Cluster?

SandboxThe details on how to set up a Sandbox InnoDB Cluster  is detailed at https://dev.mysql.com/doc/refman/8.0/en/mysql-innodb-cluster-sandbox-deployment.html but for those seeking a quick and dirty example please keep reading.

Step 1 - Fire up the MySQL Shell and Crate Sandbox Instances Start the MySQL shell and create a Sandbox instance. In this example we set up a sandbox instance at port 3310.
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In reply to Marcelo Altmann.

Hi Marcelo.

Thanks for reply me..

We have resolved the isaue.

After disabling Selinux it’s got resolved.

MariaDB came into being the day that Oracle announced the purchase of Sun in 2010.  In order to keep it free under the GNU GPL, Michael Widenius forked MySQL and took several MySQL developers with him in the process.  Since then, MariaDB has been a drop-in replacement for MySQL, albeit with more features and better performance.

In the Improve MariaDB Performance using Query Profiling blog, we learned some useful techniques for tracking and analyzing slow queries using a couple of MariaDB server’s built-in tools: the Slow Query Log and the Performance Schema.  

The Slow Query Log records queries that are deemed to be slow and potentially problematic, that is, queries that take longer than the long_query_time global system variable value to run.

The Performance Schema is a storage engine …

MySQL, coupled with the InnoDB engine, provides full ACID compliance. With the addition of “eXtended Architecture” (XA) technology, they can all act in a distributed atomic environment.

In distributed systems, several different technologies, platforms and devices may need to act on separate sets of data atomically. These backend datasets can exist side by side in a datacenter, or across oceans. There can be multiple datasets where atomicity is a necessity. Foreign engines could completely control these datasets, with no concept of cross communication. The XA standard was specified by the Open Group to describe distributed transaction processing. This “eXtended Architecture” describes the relationship between a transaction manager and a transaction resource. You can find the specification HERE.

Transactions are:

• ATOMIC, committed as a …

While updating my class image to Fedora 27, I noticed that it installed the Akonadi Server. The documentation on the Akonadi server lacked some straightforward documentation. It also offered a bundled set of software that limited how to approach MySQL development.

So, I removed all those packages with the following syntax:

dnf remove `rpm -qa | grep akonadi`

After removing those Akonadi packages, I installed the MySQL Community Edition from the Fedora repo with this syntax:

yum install -y community-mysql*

Having installed MySQL Community Edition, I started the service with this command:

sudo service mysql start

Then, I ran the mysql_secure_installation script to secure the installation:

mysql_secure_installation

The script set the root user’s password, remove the anonymous user, disallow remote root login, and …

Nicolas Tobias has written an awesome guide to setting up replication from MariaDB to Hadoop/HDFS using Tungsten Replicator, in Spanish! He’s planning more of these so if you like what you see, please let him know!

Semana santa y yo con nuevas batallas que contar.
Me hayaba yo en el trabajo, pensando en que iba a invertir la calma que acompa;a a los dias de vacaciones que libremente podemos elegir trabajar y pense: No seria bueno terminar esa sincronizacion entre los servidores de mariaDB y HIVE?

Ya habia buscado algo de info al respecto en Enero hasta tenia una PoC montada con unas VM que volvi a encender, pero estaba todo podrido: no arrancaba, no funcionba ni siquiera me acordaba como lo habia hecho y el history de la shell er un galimatias. Decidi que si lo rehacia todo desde cero iba a poder dejarlo escrito en un playbook y ademas, aprenderlo y automatizarlo hasta el limite de poder desplegar de forma automatica on …

There are lots of new features in MySQL 8.0 that was recently released including our Document Store capability.  There are a few core capabilities related to InnoDB Cluster in 8.0 that I’d like to share but some will arrive in some coming blogs.  Primarily here I’ll point out some nice details with InnoDB Cluster 8.0… Read More »

If you are a regular reader of this blog, you likely know I like the ZFS filesystem a lot. ZFS has many very interesting features, but I am a bit tired of hearing negative statements on ZFS performance. It feels a bit like people are telling me “Why do you use InnoDB? I have read that MyISAM is faster.” I found the comparison of InnoDB vs. MyISAM quite interesting, and I’ll use it in this post.

To have some data to support my post, I started an AWS i3.large instance with a 1000GB gp2 EBS volume. A gp2 volume of this size is interesting because it is above the burst IOPS level, so it offers a constant 3000 IOPS performance level.

I used sysbench to create a table of 10M rows and then, using export/import tablespace, I copied it 329 times. I ended up with 330 tables for a total size of about 850GB. The dataset generated by sysbench is not very compressible, so I used lz4 compression in ZFS. …

In reply to GetMySQL Administration.

Hi GetMySQL. Plugin is working on 5.6.40 see below logs:


2018-05-15 14:23:23 4946 [Note] InnoDB: 5.6.40 started; log sequence number 1626007
2018-05-15 14:23:23 4946 [Note] McAfee Audit Plugin: starting up. Version: 1.1.6 , Revision: 784 (64bit). MySQL AUDIT plugin interface version: 769 (0x301). MySQL Server version: 5.6.40.
2018-05-15 14:23:23 4946 [Note] McAfee Audit Plugin: setup_offsets audit_offsets: 6992, 7040, 4000, 4520, 72, 2704, 96, 0, 32, 104, 136, 7128, 4392, 2800, 2808, 2812, 536, 0, 0, 6360, 6384, 6368, 13048, 548, 516 validate_checksum: 1 offsets_by_version: 1
2018-05-15 14:23:23 4946 [Note] McAfee Audit Plugin: mysqld: /usr/sbin/mysqld (d156a1659a2a6b64ca0ea3f5e4c77c5b)
2018-05-15 14:23:23 4946 …

MySQL User Camp is a forum where MySQL Engineers and community users come together to connect, collaborate, and share knowledge. This year’s first MySQL User Camp was held on 27th April 2018, at Oracle India Pvt Ltd, Kalyani Magnum Infotech Park, Bangalore with an excellent turnout of 60 attendees. The event began with a welcome […]