In this tutorial we will show you how to setup basic MySQL replication on two CentOS 7 servers, but the same steps should work on all RPM based systems. We will use two test CentOS 7 virtual servers for this tutorial with the following IP addresses: MASTER: 123.456.789.1 SLAVE: 123.456.789.2 Master Server: Login to the master server as user root ssh root@IP_Address and install MySQL server if it is not already installed yum install mysql-server mysql Start the MySQL server and enable it to start at boot time systemctl start mysql systemctl enable mysql Next, open the MySQL configuration file […]

How do you scale Percona XtraDB Cluster with ProxySQL in Kubernetes?

In my previous post I looked how to run Percona XtraDB Cluster in a Docker Swarm orchestration system, and today I want to review how can we do it in the more advanced Kubernetes environment.

There are already some existing posts from Patrick Galbraith (https://github.com/kubernetes/kubernetes/tree/release-1.2/examples/mysql-galera) and Raghavendra Prabhu (https://github.com/ronin13/pxc-kubernetes) on this topic. For this post, I …

All you need for monitoring MySQL servers. Data security is paramount for individuals and corporations alike. Today, it is inevitable not to notice the importance levied on hosted MySQL like RDS, Aurora, etc. Managing MySQL servers is becoming a daunting task, given the exponential growth in data and the number of users with each working days.

Below are the key aspects that need to be part of your wishlist.

1) Leveraging Performance Schema(P_S) and SYS Schema

Performance Schema was introduced in MySQL 5.5.3 and further upgraded through version 5.7. It has its own storage engine, provides access to low-level server execution information while minimizing the impact on server performance. There is a trade-off between the time you can save by using Performance Schema and the load it adds to the server. It can optimize server performance and save time when used in an efficient manner.

You can also target queries that …

 All you need for monitoring MySQL servers

Data security is paramount for individuals and corporations alike. Today, it is inevitable not to notice the importance levied on hosted MySQL like RDS, Aurora, etc. Managing MySQL servers is becoming a daunting task, given the exponential growth in data and the number of users with each working days.

Below are the key aspects that need to be part of your wishlist.

1) Leveraging Performance Schema(P_S) and SYS Schema

Performance Schema was introduced in MySQL 5.5.3 and further upgraded through version 5.7. It has its own storage engine, provides access to low-level server execution information while minimizing the impact on server performance. There is a trade-off between the time you can save by using Performance Schema and the load it adds to the server. It can optimize server performance and save time when used in an efficient manner.

You can also target …

In this blog, I provide answers to the Q & A for the Troubleshooting hardware resource usage webinar.

First, I want to thank everybody who attended the May 26 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t able to answer during the webinar, with responses:

Q: How did you find the memory IO LEAK?

A: Do you mean the replication bug I was talking about in the webinar? I wrote about this bug …

Last week during the Oracle Users Group Leaders Summit in Bucharest I had the pleasure the meet the leaders for the MySQL Users Group from Azerbaijan,  Finland, Madrid and the Netherlands.

During some discussions, it appeared that some users are not aware of the Performance_Schema integration in MySQL Workbench. Indeed with WB you can enable PFS, add sys table if not present by default (<5.7).

You can use a default configuration or customize it and enable all the instruments and consumers you need.

When enabled, you can generate some useful reports

In case you are also not yet aware of it, the following dashboard is also available in MySQL Workbench

The latest version of MySQL Workbench has been released yesterday, June 13th : 6.3.7 GA

In this post, we’ll look at scaling Percona XtraDB Cluster with ProxySQL in Docker Swarm.

In my previous post, I showed how to employ Percona XtraDB Cluster on multiple nodes in a Docker network.

The intention is to be able to start/stop nodes and increase/decrease the cluster size dynamically. This means that we should track running nodes, but also to have an easy way to connect to the cluster.

So there are two components we need: service discovery to register nodes and ProxySQL to handle incoming traffic.

The work with service discovery is already bundled with Percona …

As Morgan announced it his blog post related to new defaults in 5.7, in 5.7.7 and newer the default value of sync_binlog is now 1.

This of course has an impact on performance especially if you don’t have fast storage like a RAID controller with a cache for example.

Already in O’reilly High Performance MySQL, is was written that the most important setting for binary logging on the master is sync_binlog = 1.

And this recommendation was made for MySQL 5.0 ! At that time the performance impact could reach 50%. In 5.6, with the addition of binary log group commit …

The MySQL developer tools team announces 6.3.7 as our GA release for MySQL Workbench 6.3. 

For the full list of changes in this revision, visit 
http://dev.mysql.com/doc/relnotes/workbench/en/changes-6-3.html 

For discussion, join the MySQL Workbench Forums:
http://forums.mysql.com/list.php?152

Download MySQL Workbench 6.3.7 GA now, for Windows, Mac OS X 10.9+, 
Oracle Linux 6 and 7, Fedora 23 and Fedora 24, Ubuntu 16.04 or sources, from:

http://dev.mysql.com/downloads/tools/workbench/ 

Enjoy!

Security auditing plays important role in the process of securing a database system. Thanks to the MySQL Enterprise Audit extension, we can record all activities, such as client connections and execution of queries into a single log file, for later inspection.…