Select Page

Percona Blogs


How to setup WordPress high availability hosting using Percona XtraDB cluster

Your website is only as fast as its slowest component. In a WordPress server infrastructure, database servers are often the slowest. This is because databases depend on good old hard disks instead of the super fast server memory to fetch data.

In high traffic WordPress websites, database servers are known to incur intermittent downtime and performance bottlenecks. Today we’ll see how a Percona XtaDB cluster can be used to deliver WordPress high availability hosting.
(more…)

How to fix Root Privilege Escalation vulnerability (CVE-2016-6664) in MySQL, MariaDB and PerconaDB

How to fix Root Privilege Escalation vulnerability (CVE-2016-6664) in MySQL, MariaDB and PerconaDB

MySQL database server is widely used by online businesses to store their critical and valuable data. MariaDB and Percona are other database servers based on MySQL.

But the confidentiality and security of these database servers goes for a toss when one fine morning a vulnerability or exploit in the software gets published.

It was only a couple of months ago that the MySQL vulnerability CVE-2016-6662 ‘Remote Root Code Execution’ / ‘Privilege Escalation’ got revealed.

Two more critical vulnerabilities in MySQL has been revealed recently, which can lead to a server hack by executing arbitrary code and gaining root privilege.

(more…)

How to fix ‘MySQL Remote Root Code Execution’ / ‘Privilege Escalation’ (zero day ) vulnerability – CVE-2016-6662

How to fix ‘MySQL Remote Root Code Execution’ / ‘Privilege Escalation’ (zero day ) vulnerability – CVE-2016-6662

On Sep 12th, Dawid Golunski announced CVE-2016-6662 aka MySQL Remote Root Code Execution / Privilege Escalation (0 day) vulnerability.

CVE-2016-6662 is reported as a critical exploit which can allow local and remote attackers to execute arbitrary code with root privileges in a vulnerable MySQL server. (more…)

How to setup a Percona cluster (PXC)

How to setup a Percona cluster (PXC)

Percona is a high performance alternative for MySQL. It uses a modified InnoDB engine called XtraDB, and uses Galera’s clustering technology to offer better performance and uptime than MySQL. Today, let’s take a look at how you can setup a Percona cluster, and migrate your databases from MySQL. (more…)

How to setup Percona bootstrap in an XtraDB cluster

How to setup Percona bootstrap in an XtraDB cluster

In an earlier post, we discussed how Percona XtraDB Cluster (PXC) can be used to achieve database high availability. PXC uses master-master replication, which makes each server in the cluster capable of making changes to the database. In such a system, data update conflicts are possible if servers are not in sync. Percona bootstrapping is a way to avoid conflicts when starting up a cluster.
(more…)

Percona incremental backup – Why use it, and how to set it up

Percona incremental backup – Why use it, and how to set it up

A properly configured backup helps you bounce back from a server failure within minutes. However, backups impose a performance penalty and it is known to even bring down servers due to high load. So, backups should be setup such that it uses as little resources as possible. (more…)

Magento and Percona – Using XtraDB cluster to improve website speed and uptime

Magento and Percona – Using XtraDB cluster to improve website speed and uptime

Magento is built to be flexible and feature rich, but its Achilles heel is performance. Magento uses multiple database queries, and extensive database logging for each website access. So, just by optimizing the database service, Magento page speed can be improved significantly. (more…)

cPanel and Percona – Should you replace MySQL? Here’s all your questions answered

cPanel and Percona – Should you replace MySQL? Here’s all your questions answered

From WordPress to Magento, almost all popular web apps use MySQL as their default database. While MySQL is easy to use and administer, it causes frequent performance issues in web hosting servers. Many website owners and web hosting providers now use high performance MySQL alternatives such as MariaDB or Percona. (more…)

Percona vs MySQL – What’s different in Percona and should you use it?

Percona vs MySQL – What’s different in Percona and should you use it?

Almost every open source project uses MySQL as its database. It is supported by all hosting providers, is easy to administer, and free. However, MySQL servers often face performance issues, leading to many websites looking for alternate high performance databases. (more…)

Setting up Percona high availability database cluster

Setting up Percona high availability database cluster

MySQL is by far the most popular database used for web applications. It is a very easy database to use, but it doesn’t have the best uptime record. Many database issues such as corrupted tables, resource limits, or replication errors often lead to website downtime. (more…)

Page 1 of 212