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Percona XtraDB Cluster: “dh key too small” error during an SST using SSL
If you’ve tried to use SSL in Percona XtraDB Cluster and saw an error in the logs like SSL3_CHECK_CERT_AND_ALGORITHM:dh key too small, we’ve implemented some changes in Percona XtraDB Cluster 5.6.34...
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Percona XtraDB Cluster: SST tmpdir option
In this blog post, I’ll discuss some changes to the behavior of the Percona XtraDB Cluster SST tmpdir option in the latest versions of Percona XtraDB Cluster 5.6.35-26.20-3 and 5.7.17-29.30....
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Improved wsrep-stages and related instrumentation in Percona XtraDB Cluster
In this blog post, we’ll look at how we’ve improved wsrep-stages and related instrumentation in Percona XtraDB Cluster. Introduction When you execute a workload and need to find out what the given...
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Percona Live Europe Session Interview: Building Multi-Petabyte Data...
Percona Live Europe provides open source professionals with an opportunity to discuss how various technologies get used in order to solve database problems. Alexander Zaitsev of LifeStreet/Altinity...
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This Week in Data with Colin Charles 17: AWS Re:Invent, a New Book on MySQL...
Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community. The CFP for Percona Live Santa Clara 2018 closes December...
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This Week in Data with Colin Charles 25: Meltdown/Spectre still dominate,...
Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community. Still on Meltdown/Spectre, this time MariaDB Corporation...
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This Week in Data with Colin Charles 30: Schedule for Percona Live, and...
Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community. Have you registered for Percona Live already? The...
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Webinar Wednesday, April 18, 2018: Percona XtraDB Cluster 5.7 Tutorial
Please join Percona’s Architect, Tibi Köröcz as he presents Percona XtraDB Cluster 5.7 Tutorial on Wednesday, April 18, 2018, at 7:00 am PDT (UTC-7) / 10:00 am EDT (UTC-4). Never used Percona XtraDB...
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Webinar Tues, 5/29: MySQL, Percona XtraDB Cluster, ProxySQL, Kubernetes: How...
Please join Percona’s Principal Architect Alex Rubin as he presents MySQL, Percona XtraDB Cluster, ProxySQL, Kubernetes: How they work together to give you a highly available cluster database...
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Linux OS Tuning for MySQL Database Performance
In this post we will review the most important Linux settings to adjust for performance tuning and optimization of a MySQL database server. We’ll note how some of the Linux parameter settings used OS...
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Percona Software News and Roadmap Update with CEO Peter Zaitsev: Q1 2017
This blog post is a summary of the webinar Percona Software News and Roadmap Update – Q1 2017 given by Peter Zaitsev on January 12, 2017. Over the last few months, I’ve had the opportunity to meet and...
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Percona XtraDB Cluster 5.6.35-26.20 is now available
Percona announces the release of Percona XtraDB Cluster 5.6.35-26.20 on March 10, 2017. Binaries are available from the downloads section or our software repositories. Percona XtraDB Cluster...
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Percona XtraDB Cluster 5.7.17-27.20 is now available
Percona announces the release of Percona XtraDB Cluster 5.7.17-27.20 on March 16, 2017. Binaries are available from the downloads section or our software repositories. NOTE: You can also run Docker...
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How We Made Percona XtraDB Cluster Scale
In this blog post, we’ll look at the actions and efforts Percona experts took to scale Percona XtraDB Cluster. Introduction When we first started analyzing Percona XtraDB Cluster performance, it was...
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Tracking IST Progress in Percona XtraDB Cluster
In this blog post, we’ll look at how Percona XtraDB Cluster uses IST. Introduction Percona XtraDB Cluster uses the concept of an Incremental State Transfer (IST). When a node of the cluster leaves the...
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Enabling Percona XtraDB Cluster SST Traffic Encryption
In this blog post, we’ll look at enabling Percona XtraDB Cluster SST Traffic Encryption, and some of the changes to the SSL-based encryption of SST traffic in Percona XtraDB Cluster 5.7.16. Some...
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Simplified Percona XtraDB Cluster SSL Configuration
In this blog post, we’ll look at a feature that recently added to Percona XtraDB Cluster 5.7.16, that makes it easier to configure Percona XtraDB Cluster SSL for all related communications. It uses...
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BEWARE: Increasing fc_limit can affect SELECT latency
In this blog post, we’ll look at how increasing the fc_limit can affect SELECT latency. Introduction Recent Percona XtraDB Cluster optimizations have exposed fc_limit contention. It was always there,...
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Percona XtraDB Cluster Transaction Replay Anomaly
In this blog post, we’ll look at a transaction replay anomaly in Percona XtraDB Cluster. Introduction Percona XtraDB Cluster/Galera replays a transaction if the data is non-conflicting but, the...
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Percona XtraDB Cluster/ Galera with Percona Monitoring Plugins
The Percona Monitoring Plugins (PMP) provide some free tools to make it easier to monitor PXC/Galera nodes. Monitoring broadly falls into two categories: alerting and historical graphing, and the...
View ArticleUseful MySQL 5.6 features you get for free in PXC 5.6
I get a lot of questions about Percona XtraDB Cluster 5.6 (PXC 5.6), specifically about whether such and such MySQL 5.6 Community Edition feature is in PXC 5.6. The short answer is: yes, all features...
View ArticleThe use of Iptables ClusterIP target as a load balancer for PXC, PRM, MHA and...
Most technologies achieving high-availability for MySQL need a load-balancer to spread the client connections to a valid database host, even the Tungsten special connector can be seen as a...
View ArticleClusterControl for Percona XtraDB Cluster Improves Management and Monitoring
ClusterControl for Percona XtraDB Cluster is now available in three different versions thanks to our partnership with Severalnines. ClusterControl will make it simpler to manage and monitor Percona...
View ArticleDoing a rolling upgrade of Percona XtraDB Cluster from 5.5 to 5.6
Overview Percona XtraDB Cluster 5.6 has been GA for several months now and people are thinking more and more about moving from 5.5 to 5.6. Most people don’t want to upgrade all at once, but would...
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MySQL High Availability With Percona XtraDB Cluster (Percona MySQL Training)
I’ve had the opportunity to train lots of people on Percona XtraDB Cluster (PXC) over the last few years the product has existed. This has taken the form of phone calls, emails, blog posts, webinars,...
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Galera data on Percona Cloud Tools (and other MySQL monitoring tools)
I was talking with a Percona Support customer earlier this week who was looking for Galera data on Percona Cloud Tools. (Percona Cloud Tools is a hosted service providing access to query performance...
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Q&A: Percona XtraDB Cluster as a MySQL HA solution for OpenStack
Thanks to all who attended my Nov. 12 webinar titled, “Percona XtraDB Cluster as a MySQL HA Solution for OpenStack.” I had several questions which I covered at the end and a few that I didn’t. You can...
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MaxScale: A new tool to solve your MySQL scalability problems
Ever since MySQL replication has existed, people have dreamed of a good solution to automatically split read from write operations, sending the writes to the MySQL master and load balancing the reads...
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Playing with Percona XtraDB Cluster in Docker
Like any good, thus lazy, engineer I don’t like to start things manually. Creating directories, configuration files, specify paths, ports via command line is too boring. I wrote already how I survive...
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Better high availability: MySQL and Percona XtraDB Cluster with good...
High Availability Have you ever wondered if your application should be able to work in read-only mode? How important is that question? MySQL seems to be the most popular database solution for web-based...
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Galera Error Failed to Report Last Committed (Interrupted System Call)
In this blog, we’ll discuss the ramifications of the Galera Error Failed to Report Last Committed (Interrupted System Call). I have recently seen this error with Percona XtraDB Cluster (or Galera):...
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Galera warning “last inactive check”
In this post, we’ll discuss the Galera warning “last inactive check” and what it means. Problem I’ve been working with Percona XtraDB Cluster quite a bit recently, and have been investigating various...
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Percona XtraDB Cluster on Ceph
This post discusses how XtraDB Cluster and Ceph are a good match, and how their combination allows for faster SST and a smaller disk footprint. My last post was an introduction to Red Hat’s Ceph. As...
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Percona XtraDB Cluster 5.7.12 RC1 is now available
Percona announces the first release candidate (RC1) in the Percona XtraDB Cluster 5.7 series on August 9, 2016. Binaries are available from the downloads area or our software repositories. Percona...
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Percona XtraDB Cluster 5.7.14-26.17 GA is now available
This Percona XtraDB Cluster 5.7.14-26.17 GA release is dedicated to the memory of Federico Goncalvez, our colleague with Percona’s Uruguayan team until his tragic death on September 6, 2016. Fede, we...
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All You Need to Know About GCache (Galera-Cache)
This blog discusses some important aspects of GCache. Why do we need GCache? Percona XtraDB Cluster is a multi-master topology, where a transaction executed on one node is replicated on another node(s)...
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Galera Cache (gcache) is finally recoverable on restart
This post describes how to recover Galera Cache (or gcache) on restart. Recently Codership introduced (with Galera 3.19) a very important and long awaited feature. Now users can recover Galera cache on...
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Upcoming Webinar Wed 1/30: Percona XtraDB Cluster: Failure Scenarios and...
Please join Percona’s Senior Technical Manager, Alkin Tezuysal, and Percona’s Percona XtraDB Cluster Lead, Krunal Bauskar as they present their talk, Percona XtraDB Cluster: Failure Scenarios and...
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RHEL 8 Packages Available for Percona Products
Redhat Enterprise Linux 8 packages have been released into our repositories. Recent versions of Percona Server for MySQL, Percona XtraDB Cluster, Percona XtraBackup, Percona Server for MongoDB,...
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2 new features added to Percona XtraDB Cluster (PXC) since 5.5.31
With the last Percona XtraDB Cluster (PXC) release, two major features were added:* a new command to bootstrap the cluster was added to the init script * SST via Xtrabackup now supports Xtrabackup 2.1...
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