ProxySQL is the most preferred and is widely used for load-balancing MySQL workload, thanks to Rene Cannon & Team for the great tool, and kudos on the recent release of ProxySQL 1.4.10, with a lot of bug fixes. ProxySQL is simple in design, lightweight, highly efficient and feature rich, We have been working with ProxySQL in production for our client quite a sometime, we have also shared some of our encounters/experience and use cases in the below blogs.

• ProxySQL for replication – Read Write split
• ProxySQL for handling bad queries
• …

Percona announces the release of Percona XtraDB Cluster 5.7.22-29.26 (PXC) on June 29, 2018. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.7.22-29.26 is now the current release, based on the following:

• Percona Server for MySQL 5.7.22
• Galera/Codership WSREP API Release 5.7.21
• Galera Replication library 3.23

Deprecated

The following variables …

Percona announces the release of Percona XtraDB Cluster 5.6.40-26.25 (PXC) on June 20, 2018. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.6.40-26.25 is now the current release, based on the following:

• Percona Server for MySQL 5.6.40
• Galera/Codership WSREP API Release 5.6.39
• Galera Replication library 3.23

All Percona software is open-source and free. …

Let them stay together.

In the last YEARS, I have seen quite often that users, when installing a product such as PXC, instead of spending five minutes to understand what to do just run

iptables -F

  and save.

In short, they remove any rules for their firewall.

With this post, I want to show you how easy it can be to do the right thing instead of putting your server at risk. I’ll show you how a slightly more complex setup like PXC (compared to MySQL), can be easily achieved without risky shortcuts.

iptables is the utility used to manage the chains of rules used by the Linux kernel firewall, which is your basic security tool.
Linux comes with a wonderful firewall built into the kernel. As an administrator, you can configure this firewall with interfaces like ipchains  — which we are not going to cover — and iptables, which we shall talk about.

iptables is …

At my latest webinar “MySQL Test Framework (MTR) for Troubleshooting”, I received an interesting question about MTR test cases for Percona XtraDB Cluster (PXC). Particularly about testing SST and IST.

This post is intended to answer this question. It assumes you are familiar with MTR and can write tests for MySQL servers. If you are not, please watch the webinar recording first.

You can find example tests in any PXC tarball package. They are located in directories

mysql-test/suite/galera

 ,

mysql-test/suite/galera_3nodes

  and

mysql-test/suite/wsrep

 , though that last directory only contains a configuration file.

If you …

Encryption is a very important form of security and It’s becoming a standard from a compliance perspective to ensure PCI, PII and HIPPA compliances. Encryption needs to be performed for Data at Rest, Data over Wire.

Data At Rest:

• Until 5.6, To encrypt the MySQL data files, Only disk level encryption possible (Gazzang, Luks)
• From 5.7.11 MySQL added a feature for tablespace encryption. Which encrypts only the …

In this blog post, We will be explaining about the timeouts in SST on systemd implementation which we faced recently in Percona XtraDB Cluster  during our Consulting with a client. State Snapshot Transfers (SST) refers to complete data sync from one of the nodes from the cluster to the joining node.

SST will happen for one or more reasons listed below.

1. Initial sync to join a node to cluster.
2. Node is out of cluster and lost its ability to join back due to data corruption or inconsistencies and also when the node went far behind the node, …

Please join Percona’s Ramesh Sivaraman (QA Engineer) and Krunal Bauskar (Software Engineer, Percona XtraDB Cluster Lead) as they present Percona XtraDB Cluster 5.7 with ProxySQL for Your MySQL High Availability and Clustering Needs on Thursday, March 22, 2018 at 8:30 am PDT (UTC-7) / 11:30 am EDT (UTC-4).

Percona has developed Percona XtraDB Cluster (based on Galera Cluster) and integrated it with ProxySQL to address MySQL high availability and …

Percona announces the release of Percona XtraDB Cluster 5.7.21-29.26 (PXC) on March 2, 2018. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.7.21-29.26 is now the current release, based on the following:

• Percona Server for MySQL 5.7.21
• Galera/Codership WSREP API Release 5.7.21
• Galera Replication library 3.23

Starting from now, Percona XtraDB Cluster issue …

Percona announces the release of Percona XtraDB Cluster 5.6.39-26.25 (PXC) on February 26, 2018. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.6.39-26.25 is now the current release, based on the following:

• Percona Server for MySQL 5.6.39
• Galera/Codership WSREP API Release 5.6.39
• Galera Replication library 3.23

Starting from this release, Percona XtraDB …