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Displaying posts with tag: shell (reset)
MySQL Calculate How Much Disk Space You Wasted

Its not the new term for DBAs. MySQL has an awesome parameter innodb-file-per-tables allows MySQL to create separate files for each tables. This helped a lot to manage the disk space in more efficient way. But when we perform a large batch job for delete or update the data in MySQL tables, you may face this fragmentation issue. Comparing with SQL server, MySQL’s fragmentation is not high. I had a similar situation where my Disk space was consuming 80% and when I check the huge files in OS, one table’s idb file consumed 300GB+. I know it has some wasted blocks(but not actually wasted, MySQL will use this space, it’ll not return this to OS) Then I checked the information schema to find out the data size and its index size. It was 27GB only. Then I realize, we did a batch operation to delete many billions of records in that table.

Thanks to Rolando - MySQL DBA:

When I searched the similar …

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MySQL InnoDB Cluster – What’s new in Shell AdminAPI 8.0.18 release

The MySQL Development Team is very happy to announce a new 8.0 Maintenance Release of InnoDB Cluster – 8.0.18.

In addition to major quality improvements, 8.0.18 brings some very useful features!

This blog post will only cover InnoDB cluster’s frontend and control panel – MySQL Shell and its AdminAPI – Stay tuned for other blog posts covering MySQL Router and Group Replication!…

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Make It Faster: Improving MySQL Write Performance for Tungsten Cluster Slaves

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 …

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Zero-Downtime Cluster Maintenance: Comparing the Procedures for Upgrades versus DB/OS Maintenance

Overview The Skinny

Part of the power of Tungsten Clustering for MySQL / MariaDB is the ability to perform true zero-downtime maintenance, allowing client applications full access to the database layer, while taking out individual nodes for maintenance and upgrades. In this blog post we cover various types of maintenance scenarios, the best practices associated with each type of action, and the key steps to ensure the highest availability.

Important Questions Understand the Environment as a Whole First

There are a number of questions to ask when planning cluster maintenance that are critical to understand before starting.

For example:

  1. What is the cluster topology?
    • Standalone (connectors write to single cluster master)
      Single cluster: …
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How to move the Relay role to another node in a Composite Tungsten Cluster

The Question Recently, a customer asked us:

How would we manually move the relay role from a failing node to a slave in a Composite Tungsten Cluster passive site?

The Answer The Long and the Short of It

There are two ways to handle this procedure manually when the usual switch command fails to work as expected. One is short and reasonably automated, and the other is much more detailed and manual.

Of course, the usual procedure is to just issue the switch command in the passive cluster:

use west
set policy maintenance
switch
set policy automatic

The below article describes what to do when the switch command does not move the relay role to another node.

SHORT

Below is the list of cctrl commands that would be run for the basic, short version, which (aside from handling policy changes) is really only …

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MySQL InnoDB Cluster – What’s new in Shell AdminAPI 8.0.17 release

The MySQL Development Team is very excited and proud to announce a new 8.0 Maintenance Release of InnoDB Cluster – 8.0.17!

In addition to important bug fixes and improvements, 8.0.17 brings a game-changer feature!

This blog post will cover MySQL Shell and the AdminAPI, for detailed information of what’s new in MySQL Router stay tuned for an upcoming blog post!…

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MySQL InnoDB Cluster – What’s new in the 8.0.16 release

The MySQL Development Team is very happy to announce a new 8.0 GA Maintenance Release of InnoDB Cluster – 8.0.16!

In addition to important bug fixes, 8.0.16 brings very useful new features!

This blog post will cover MySQL Shell and the AdminAPI, for detailed information of what’s new in MySQL Router stay tuned for an upcoming blog post!…

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Importing Data from MongoDB to MySQL: BSON Data Types

The latest release of the MySQL Shell 8.0.14 (GA) improved the JSON import utility to support the conversion of more BSON data types from the strict mode representation of MongoDB Extended JSON. This removes a previous limitation regarding the import of more complex MongoDB data types to MySQL, making it more reliable.…

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MySQL With DevOps 1 – Automate Database Archive

This is my next blog series. Im going to write about how I automated many complex tasks in MySQL with Rundeck. In my last series, I have explained RunDeck basics. You can find those articles here. In this blog Im writing about how I automated MySQL archive for multiple tables in one Rundeck job. Challeange …

The post MySQL With DevOps 1 – Automate Database Archive appeared first on SQLgossip.

MySQL Shell 8.0.15 for MySQL Server 8.0 and 5.7 has been released

Dear MySQL users,

MySQL Shell 8.0.15 is a maintenance release of MySQL Shell 8.0 Series
(a component of the MySQL Server). The MySQL Shell is provided under
Oracle’s dual-license.

MySQL Shell 8.0 is highly recommended for use with MySQL Server 8.0
and 5.7. Please upgrade to MySQL Shell 8.0.15.

MySQL Shell is an interactive JavaScript, Python and SQL console
interface, supporting development and administration for the MySQL
Server. It provides APIs implemented in JavaScript and Python that
enable you to work with MySQL InnoDB cluster and use MySQL as a
document store.

The AdminAPI enables you to work with MySQL InnoDB cluster, providing
an integrated solution for high availability and scalability using
InnoDB based MySQL databases, without requiring advanced MySQL
expertise. For more information about how to configure and work with …

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