Like I stated in my previous article - MySQL InnoDB Cluster - Recovering and provisioning with mysqldump :
"As the administrator of a cluster, among others tasks, you should be able to restore failed nodes and to add (or remove) new nodes".
Well, I still agree with myself :)
MySQL customers using a Commercial Edition have access to MySQL Enterprise Backup (MEB) which provide enterprise-grade physical backup and recovery for MySQL.
MEB delivers hot, online, non-blocking backups on multiple platforms including Linux, Windows, Mac & Solaris.

The post MySQL InnoDB Cluster - Recovering and provisioning with MySQL Enterprise Backup first appeared on dasini.net - Diary of a MySQL expert.

As the administrator of a cluster, among other tasks, you should be able to restore failed nodes and grow (or shrink) your cluster by adding (or removing) new nodes.
In MySQL, as a backup tool (and if your amount of data is not too big), you can use mysqldump a client utility that performs logical backups.
The results are SQL statements that reproduce the original schema objects and data.
For substantial amounts of data however, a physical backup solution such as MySQL Enterprise Backup is faster, particularly for the restore operation.
But this is the topic of my next blog post :)

The post MySQL InnoDB Cluster - Recovering and provisioning with mysqldump first appeared on dasini.net - Diary of a MySQL expert.

Are you looking to get started with the world’s most popular open-source database, and wondering how you should setup your MySQL hosting? So many default to Amazon RDS, when MySQL performs exceptionally well on Azure Cloud. While Microsoft Azure does offer a managed solution, Azure Database, the solution has some major limitations you should know about before migrating your MySQL deployments. In this post, we outline the best way to host MySQL on Azure, including managed solutions, instance types, high availability replication, backup, and disk types to use to optimize your cloud database performance.

MySQL DBaaS vs. Self-Managed MySQL

The first thing to consider when weighing between self-management and a MySQL Database-as-a-Service …

Percona is glad to announce the release of Percona XtraDB Cluster 5.7.26-31.37 on June 26, 2019. Binaries are available from the downloads section or from our software repositories.

Percona XtraDB Cluster 5.7.26-31.37 is now the current release, based on the following:

• Percona Server for MySQL 5.7.26-29
• Codership WSREP API release 5.7.25
• Codership Galera library 3.26

All Percona software is open-source and free.

Bugs Fixed

• PXC-2480: In some …

Overview The Skinny

In this blog post we will define what a split-brain scenario means in a MySQL database cluster, and then explore how a Tungsten MySQL database cluster reacts to a split-brain situation.

Agenda What’s Here?

• Define the term “split-brain”
• Briefly explore how the Tungsten Manager works to monitor the cluster health and prevent data corruption in the event of a network partition
• Also explore how the Tungsten Connector works to route writes
• Describe how a Tungsten MySQL database cluster reacts to a split-brain situation
• Illustrate various testing and recovery procedures

Split-Brain: Definition and Impact Sounds scary, and it is!

A split-brain occurs when a MySQL database cluster which normally has …

If you share your photos on social media, they will stay on the internet forever…

Many of us have heard or read this sentence during conversations with friends, in articles, online forums, TV shows, etc.

But how is it possible that we can’t seem to be able to fully remove our photos from the internet when we want to, and, taking this further, that our photos are never lost and always retrievable (which can both be a good and a bad thing)?

The behind-the-scenes, technical secret lies in data replication.

The very first moment when you share a photo on social media, that photo is uploaded into the closest available database server. In the second moment, that same photo is replicated into multiple other servers around the world.

This is what data …

Percona is glad to announce the release of Percona XtraDB Cluster 5.6.44-28.34 on June 19, 2019. Binaries are available from the downloads section or from our software repositories.

Percona XtraDB Cluster 5.6.44-28.34 is now the current release, based on the following:

• Percona Server 5.6.44-86.0
• Codership WSREP API release 5.6.43
• Codership Galera library 3.26

All Percona software is open-source and free.

Bugs Fixed

• PXC-2480: In some …

The Question Recently, a customer asked us:

We were wondering if the Connectors would be able to bind to localhost/127.0.0.1 instead of 0.0.0.0:3306? Since the Connector is installed on the application servers, all of the connections are coming from localhost. We would like to limit this exposure so that the 3306 port is not exposed externally. We ask because we are failing PCI checks that are able to access the database port externally.

The Answer YES!

You may set the IP address for the Connector to listen on by using the tpm command option: property=server.listen.address={IP_ADDRESS}

To force the Connector to listen on the localhost only use the following example:

shell> tools/tpm configure alpha --property=server.listen.address=127.0.0.1
shell> tools/tpm update --replace-release

Use the IP …

ProxySQL is a great tool. It’s one of the most recommended technologies in our Open Source Database practice.

Many of our clients are running it or are migrating towards it, but we’ve seen that it is pretty CPU-intensive. We’ve also seen strange behavior in the connection handling when reaching the CPU saturation point.

At this point, we noticed that the frontend_connections counter in the stats_mysql_users table was not decreasing even after the connections were no longer present at the network level. This counter is used to check the max_connections value in the mysql_users configuration table, causing frontend connections to receive a “Too many connections” error. So we determined that the key element here is to scale it properly. Obviously, all the major cloud providers can help us here as they all have features like auto-scaling groups.

Jervin Real of Percona has recently …

Overview The Skinny

In this blog post we will discuss how to use the Tungsten Connector keep-alive feature to ensure long-running MySQL & MariaDB/Percona Server client sessions stay connected in a Tungsten Cluster.

Agenda What’s Here?

• Briefly explore how the Tungsten Connector works
• Describe the Connector keep-alives – what are they and why do we use them?
• Discuss why the keep-alive feature is not available in Bridge mode and why
• Examine how to tune the keep-alive feature in the Tungsten Connector

Tungsten Connector: A Primer A Very Brief Summary

The Tungsten Connector is an intelligent MySQL database proxy located between the clients and the database servers, providing a single connection point, while routing queries to the …