Here in Percona Support, we’re receiving several requests per day for help with Percona Cloud Tools installation steps.

So I decided to prepare a step-by-step example of the installation process with some comments based on experience.  Percona Cloud Tools is a hosted service providing access to query performance insights for all MySQL uses. After a brief setup, you’ll unlock new information about your database and how to improve your applications. You can sign up here to request access to the free beta, currently under way.

Some notes

• It’s recommended to do the installation under root.
• If you’re installing pt-agent as root then .pt-agent.conf should be placed in root $HOME
• You could became root …

FOSDEM in Brussels, Belgium was a great community event again this year. The MySQL community booth was maned by Oracle MySQL, Percona, Galera and MariaDB. Thanks Kenny, Liz & co for also organising a fun community dinner on Saturday! The MySQL dev room was packed with participants listening to some very interesting presentations, amongst them MaxScale, which got some considerable interest from the audience.

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I came across a scenario where we were concerned about the size of a table, a 134G table, its a pretty huge table and growing fast. The nature of the table – its a table which contains logs , sort of a audit table. Some fundamental questions around this table’s use: 1) would it have a lot of reads ?  — Answer –  No 2) is it always insert only? — Answer – Yes 3) current strategy to restrict size ? — Answer – delete data from table. 4) does one need backup of the table, i.e. is it very important ?  — Answer – No Well based on the above, it would seem that logging is the theme. Schema of the table: CREATE TABLE `SystemLogs` (   `column1` varchar(255) DEFAULT NULL,   `column2` varchar(255) DEFAULT NULL,   `column3` varchar(255) DEFAULT NULL,   `column4` varchar(255) DEFAULT NULL,   `column5` text,   `column6` text,   `timestamp` datetime DEFAULT NULL,   `id` int(11) …

Hi I installed mysql on ubuntu 12.04 LTS with ActivedDirectory Integration, I followed your step, and I amd getting two errors. One is with PHPMYADMIN, I gett the following message. “#1698 Cannot log in to the MySQL server”.

The second error is with mysqlworkbench I get the following error:

Failed to Connect to MySQL at 192.168.0.12:3306 with user bmilitzer.

Access denied for user ‘bmilitzer’@’mgc-01.mgc.com’ I tried adding the user by using the following command.

create user ‘bmilitzer’@’mgc-01.mgc.com’ identified with auth_pam;

But no luck, I just am stuck at this point.

This is the first in a series of posts highlighting a few of the seldom-used but still handy Percona Toolkit tools.

Have you ever had a problem understanding the EXPLAIN statement output? And are you the type of person who would rather use the command line than a GUI application? Then I would recommend that you use Percona’s pt-visual-explain toolkit. This is one of many Percona Toolkit tools that is useful for those who want to have a different view and an easier time understanding the EXPLAIN output aside from the usual table and vertical views.

As described in the documentation – http://www.percona.com/doc/percona-toolkit/2.2/pt-visual-explain.html#description

“pt-visual-explain reverse-engineers …

Whether you are a database administrator, database application developer, web developer, system administrator or system architect, if you are working with a database system such as the MySQL Server, you will want to ensure the best possible performance. 

To learn about the great performance you can get from a MySQL Database, visit Dimitri's blog.

If you have experience maintaining a database server, can use MySQL tools and have knowledge of general SQL statements and SQL tuning principles, consider taking the MySQL Performance Tuning course. In this 4-day instructor-led course, you will learn about:

• What to tune and why
• Monitoring, benchmarking and stress tools …

You can watch the video of my linux.conf.au 2014 talk here: http://mirror.linux.org.au/linux.conf.au/2014/Wednesday/28-Past_Present_and_future_of_MySQL_and_variants_-_Stewart_Smith.mp4

But let’s talk about things in blog form rather than video form :)

Back in 1979, there was UNIREG. A text UI to records (rows) in a database (err, table). The reason I mention UNIREG is that it had FoRMs which as you may have guessed by my capitalization there is where the FRM file comes from.

In 1986, UNIREG came to UNIX. That’s right kids, the 80×24 VT100 interface to ISAM (Index Sequential Access Method – basically rows are written in insert order and indexes point to them) came to UNIX. There was no generic query language, just FoRMs and reports. In fact, to this day, that …

Like a lot of developers I started using a MacBook Pro around the time of Tiger.  I instantly loved it:  simple, fast, and virtually no system administration overhead. The genius of OS X was that it never got in the way. You opened the box, pulled out the machine, and got to work. It had a great user interface, excellent  development tools (Eclipse in my case) and the command utilities like ssh, rsync, and bash worked seamlessly with Linux systems.

Well, that was then and this is now. Starting with Lion I began to spend an increasing amount of time fighting OS X instead of getting work done. I'm now using Mavericks and have not seen much improvement, in fact quite the contrary. Here are just a few of the problems after the Lion to Mavericks upgrade:

• Spotlight indexes destroyed; need 2 days to regenerate
• AppleMail access to Gmail IMAP  broken
• Time Machine stuck in …

This week, we talk with Ivan Zoratti of SkySQL about MaxScale, a new MySQL proxy. Ear Candy is about accidentally removing a dependent package, and At the Movies is a DB Hangops recording of MaxScale, replication saturation and monitoring.

Events
DB Hangops - every other Wednesay at noon Pacific time
Upcoming MySQL events, including Tech Tours

Training
SkySQL Trainings
Tungsten University trainings

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February 3, 2014 By Severalnines

Liferay is an open-source content management system written in Java. It is used by a number of high traffic sites, as this survey suggests. 

Clustering Liferay and other components such as the database and the file system is a good way to handle the performance requirements of a high traffic site. The latest Liferay version has introduced features that simplify clustering, such as built-in support for Ehcache clustering, Lucene replication, read/write splitting capabilities for database (in case if you run on master-slave architecture) and support for various file systems for the portal repository. 

In this post, we are going to show you how to cluster Liferay in a multi-node load-balanced setup. The database backend will be based on Galera Cluster for MySQL, and the file …