We just wrapped up what was a very exciting OOW 2019 - San Francisco for MySQL.  Our MySQL track included 29 sessions, a keynote with 2 customer testimonials (Mercari and WePay), 1 tutorial, 1 Hands-on lab, 1 Birds of a Feather, and our always fun and enjoyable MySQL Community Reception.  

A BIG Thank You to the companies who came to share their experience and testimonial about how MySQL helps scale their company such as Facebook, JP Morgan Chase WePay, Credorax, Mercari, Zuora, and more.

Our focus this year: SECURITY.  With 3,800 breaches and over 4 Billion Records Stolen in just H1 2019, securing data has become a priority for any business. The first part of the keynote covers the new security features from Oracle and MySQL implemented in our latest version of the Enterprise Edition.

Other highlights for MySQL:

• MySQL 8.0,  fastest adoption of any version with over 26% …

In a previous post, I showed you how to compile Percona Mysql 5.7 on Raspberry PI 3. Now, I’ll show you how to compile and run the latest version of Percona XtraDB Cluster 5.7.26.

We will need at least 3 RaspberryPi 3 boards, and I recommend you use an external SSD drive to compile and use as MySQL’s “datadir” to avoid the stalls associated with the microSD card, which will cause PXC to run slow.

In this post, we are going to run many OS commands and configure PXC. I recommend having minimal knowledge about PXC and Linux commands.

How to install CentOS

Download the centos image from this link …

Overview The Skinny

In this blog post we explore various options for performance tuning MySQL server for better slave replication performance.

A Tungsten Cluster relies upon the Tungsten Replicator to move events from the master node to the slaves. Once the event has been transferred to the slave as THL on disk, the slave applier will then attempt to write it to the database. The Replicator can only apply events as fast as MySQL allows. If the MySQL server is somehow slow or blocking, then the Replicator will be as well.

A properly-tuned database server in addition to infrastructure and SysAdmin best practices will go quite a long way towards high-performance slave apply.

The Question Recently, a customer asked us:

During one of our load tests, we had a peak of 60k writes/min, averaging …

Reserved Words and UTF8MB4 Issues The upgrade checker utility in the new MySQL Sell will warn you about potential problems.  The two most common problems I have seen are finding out one of your column names is a reserved word and character sets.
Reserved Words
You will spot reserved word issues on the second step of the upgrade check: 2) Usage of db objects with names conflicting with reserved keywords in 8.0   Warning: The following objects have names that conflict with reserved     keywords that are new to 8.0. Ensure queries sent by your applications use     `quotes` when referring to them or they will result in errors.   More information:     https://dev.mysql.com/doc/refman/en/keywords.html
  davetest.reserved_word.over - Column name
In the above we are being told that in the schema 'davetest' in the table 'reserved_word' that there is a column named 'over' that …

My first talk is a tutorial Testing like a boss: Deploy and Test Complex Topologies With a Single Command, scheduled at Percona Live Europe in Amsterdam on September 30th at 13:30.

My second talk is Amazing sandboxes with dbdeployer scheduled on October 1st at 11:00. It is the same topic as the tutorial, but covers a narrow set of features, all in the *amazing* category.

The tutorial introduces a challenging topic, because when people hear testing, they imagine a troop of monkeys fiddling with a keyboard and a mouse, endlessly repeating a boring task. What I want to show is that testing is a creative activity and, with the right tools and mindset, it could be exciting and rewarding. During my work as a quality assurance engineer, I have always seen a boring task as an opportunity to automate. …

This tutorial explains how to create a user with a password in MySQL. We’ll use the MySQL Create User command and describe it with the help of examples. MySQL Create User with Password This command creates a new MySQL user and grants privileges. Usually, you might be using the root user to access a database. […]

Source

This tutorial explains how to create a user with a password in MySQL. We’ll use the MySQL Create User command and describe it with the help of examples. By using this command, you can create a new MySQL user and grant privileges. Usually, you might be using the root user to access a database. The […]

The post Create a New User in MySQL with Password appeared first on TechBeamers.

This week you can find our MySQL & MySQL Community experts at following shows:

• db tech showcase, Tokyo, Japan, September 25-27, 2019

  • MySQL team as Silver sponsor will have a booth in the expo area and in total 5 speaking slots related to MySQL as follows: 
    • Two User Case Studies of MySQL
    • Two Technical Sessions by MySQL User Community members (MyNA)
    • MySQL Server, MySQL Workbench and MySQL Shell by MySQL GBU 
  • Please watch organizers' website for more details.
• …

MySQL 8.0 has been the fastest in uptake of any version of MySQL.  But there are still a few of your still running 5.7.  To help you get from 5.7 to 8.0 you can use the new MySQL Shell or mysql.  The mysqlsh program has a built in upgrade checker to make sure you have an easy upgrade and to warn you of any potential problems before your smack into them.

The first step is to install mysqlsh and it can be as simple as using the MySQL apt repo and then running sudo apt-get install mysql-shell. See A Quick Guide to Using the MySQL Apt Repo.

Second is connecting with the new shell. Now something to note is that you have to specify the port for the standard protocol as the new shell wants to default to using the new protocol's port at 33060.  Simply specify the root account, the host, and that 3306 port.
…

You as a MySQL administrator/developer are really excited about cloning in MySQL 8.0.17.  You are reading all the recent blogs. You know that quickly getting a replica up and running is quite important to your dev team.

Besides, ‘cloning’ reminds you of the old classic film ‘Sleeper’ where the actors clone a new leader from the dead leader’s nose. 

Thinking of all this puts you in great spirits. Moving from MySQL 5.7 to MySQL 8.0 is high on your agenda. 

Suddenly, the CEO walks up to your desk. “We lost millions in sales last quarter,” he yells. “It’s your fault. We sold all of our items at the discounted price rather than the actual price. You need to fix this today if not sooner.” 

With that, the CEO reminds you of another reason to move to MySQL 8.0 : check constraints, which came out in 8.0.16. 

You know that ensuring that data is …