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Many organizations have MySQL or MariaDB databases at the core of their business—for processing and storing product sales, collecting information related to services offered, or just providing essential information to customers. As a result, keeping these databases running continuously can be critical for the success of an organization.

There are many components of a database system that a database administrator will need to consider for maintaining high availability. We considered server equipment (e.g., memory) in a previous introductory article. Now let’s look at using multiple servers for your MySQL and MariaDB databases—let’s look at replication.

Replication Overview

One common and effective way to structure a highly available database system is through some form of database replication. There are a few reasons …

Many organizations have MySQL or MariaDB databases at the core of their business—for processing and storing product sales, collecting information related to services offered, or just providing essential information to customers. As a result, keeping these databases running continuously can be critical for the success of an organization.

There are many components of a database system that a database administrator will need to consider for maintaining high availability. We considered server equipment (e.g., memory) in a previous introductory article. Now let’s look at using multiple servers for your MySQL and MariaDB databases—let’s look at replication.

Replication Overview

One common and effective way to structure a highly available database system is through some form of database replication. There are a few …

We are just starting to get into the swing of setting up our new training and webinar schedule. 

Initially, there will be one Webinar session (typically on a Wednesday) and one training session (on a Tuesday) every week from now. We'll be covering a variety of different topics at each. 

Typically our webinars will be about products and features, comparisons to other products, mixed in with

We are just starting to get into the swing of setting up our new training and webinar schedule. Initially, there will be one Webinar session (typically on a Wednesday) and one training session (on a Tuesday) every week from now. We’ll be covering a variety of different topics at each. Typically our webinars will be about products and features, comparisons to other products, mixed in with product news (new releases, new features) and individual sessions based on what is going on at Continuent and the market in general. Our training, by comparison, is going to be a hands-on, step-by-step sequence covering all of the different areas of our product. So we’ll cover everything from the basics of how the products work, how to deploy them, typical functionality (switching, start/stop, etc), and troubleshooting. All of the sessions are going to be recorded and we’ll produce a suitable archive page so that you can go and view the past sessions. Need a …

Sharing keys, passphrases with applications is problematic, especially with regard to encrypting data. Too often applications are developed where “the keys are left in the door” or at best “under the mat” – hard coded, in a clear text property file… exposed and vulnerable. …

This is the late blog post about 2 recent bug reports
#85969
#85971

The basic idea came after reading -> http://mysqlserverteam.com/the-mysql-8-0-1-milestone-release-is-available/

So the result of test ->
After each restart of MySQL the new undo log files are going to be created + keeping old files.

shahriyar.rzaev@qaserver-06:~/sandboxes/msb_8_0_1/data$ du -hs
6.4G    
# The count of undo files
shahriyar.rzaev@qaserver-06:~/sandboxes/msb_8_0_1/data$ ls | grep undo | wc -l
539

After new restart:

# New count
shahriyar.rzaev@qaserver-06:~/sandboxes/msb_8_0_1/data$ ls | grep undo | wc -l
616

So how to …

If you look into the key elements of replication, then the very basic element is Binary log or binlog. Over the period of time we have made efforts to improve the management of this quintessential element of replication. To keep up with our raising standards and requirements coming from the global MySQL community we have introduced two new features to help you manage your binary logs more efficiently.…

With the introduction of MySQL InnoDB Cluster we also got the MySQL Shell (mysqlsh) interface. The shell offers scripting in Javascript (default), SQL or Python. This offers a lot more options for writing scripts on MySQL, for example it is much easier now to use multiple server connections in a single script.
A customer recently asked for a way to compare the transaction sets between servers. That is useful when setting up replication or identifying the server that has most transactions applied already. So I wrote this little script which can be executed from the OS shell:

 #!/usr/bin/mysqlsh -f  
 // it is important to connect to the X protocol port,  
 // usually it is the traditional port + "0"  
 //  
 var serverA="root:root@localhost:40010"  
 var serverB="root:root@localhost:50010"  
 shell.connect(serverA)  
 var gtidA=session.sql("SELECT @@global.gtid_executed").execute().fetchOne()[0]  
 shell.connect(serverB) …

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.1.24, and MariaDB Connector/C 2.3.3. See the release notes and changelogs for details. Download MariaDB 10.1.24 Release Notes Changelog What is MariaDB 10.1? MariaDB APT and YUM Repository Configuration Generator Download MariaDB Connector/C 2.3.3 Release Notes Changelog About MariaDB Connector/C Thanks, and enjoy […]

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