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Previous 30 Newer Entries Showing entries 61 to 90 of 126 Next 30 Older Entries

Displaying posts with tag: galera (reset)

Third party solutions for master-master replication in MySQL
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Two of the more popular solutions are  MySQL Master HA and Percona Replication Manager. MySQL Master HA MHA is based on a set of Perl scripts that monitors for replication and server health. When a failover scenario will happen, it Continue reading →   [Read more...]
OSCON2013: Slides and files for High Availability in MySQL tutorial
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Good afternoon Oscon attendees - in particular attendees of my High Availability in MySQL tutorial!

Attached you can find a spreadsheet (both LibreOffice, Excel) that we will use at the end of the tutorial. You can also download the slides, in case you wish to browse them at your own pace.

How to Scale Joomla on Multiple Servers
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July 2, 2013 By Severalnines

Joomla! is estimated to be the second most used CMS on the internet after WordPress, with users like eBay, IKEA, Sony, McDonald’s and Pizza Hut. In this post, we will describe how to scale Joomla on multiple servers. This architecture not only allows the CMS to handle more users, by load-balancing traffic across multiple servers. It also brings high availability by providing fail-over between servers.

 

This post is similar to our previous posts on web application scalability and high availability:

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Replicate from a MySQL Server into a Galera Cluster
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June 28, 2013 By Severalnines

This article describes how to setup replication between a regular MySQL server and a Galera Cluster. The regular MySQL Server is the MASTER , and one of the Galera nodes will be the SLAVE:

 

In this example we have the following hosts:

  • REGULAR MASTER: 10.0.1.10
  • GALERA NODE #1 (SLAVE): 10.0.1.11

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How to Cluster Magento, nginx and MySQL on Multiple Servers for High Availability
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June 17, 2013 By Severalnines

Magento is an open-source e-commerce platform built on Zend PHP and MySQL. It is widely adopted by online retailers with some 150,000 sites known to use it. Single server setups are easy to set up, but if your store is a huge success, then you probably need to think about clustering your environment with multiple servers. Clustering is done at the web, database and file-system level, as all web nodes need access to catalog images. 

 

This post is similar to our previous posts on scaling Drupal and

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Percona XtraDB Cluster (PXC) in the real world: Share your use cases!
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The aim of this post is to enumerate real-world usage of Percona XtraDB Cluster (PXC), and also to solicit use cases from the readers. One of the prominent usages in the production environment that we have come across (and our Percona consultants have assisted) is that of HP Cloud. There is a post about it here by Patrick Galbraith of HP. The post focuses on their deployment of PXC for HP Cloud DNS. The post focuses on the key aspects of

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Scaling Wordpress and MySQL on Multiple Servers for Performance
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June 11, 2013 By Severalnines

Over the years, WordPress has evolved from a simple blogging platform to a CMS. Over seven million sites use it today, including the likes of CNN, Forbes, The New York Times and eBay. So, how do you scale Wordpress on multiple servers for high performance? 

 

This post is similar to our previous post on Drupal, Scaling Drupal on Multiple Servers with Galera Cluster for MySQL but we will focus on Wordpress, Percona XtraDB Cluster and GlusterFS using Debian Squeeze 64bit.

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The Data Day, A few days: April 29-May 3 2013
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Teradata Q1 disappoints. Actian acquires ParAccel. And more.

For 451 Research clients: Acquisitive Actian adds ParAccel to its growing database portfolio bit.ly/YgeY7k

— Matt Aslett (@maslett) April 29, 2013

For 451 Research clients: Tokutek releases TokuDB database storage engine as open source bit.ly/102xsSW

— Matt Aslett (@maslett) May 1, 2013

For 451 Research clients: Codership replicates partnership success with Galera Cluster for MySQL bit.ly/15dI8Hh

— Matt Aslett (@maslett)

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Follow these basics when migrating to Percona XtraDB Cluster for MySQL
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Galera/Percona XtraDB Cluster (PXC) for MySQL is a hot thing right now and some users jump right in without enough testing. Consequently, they’re more likely to either suffer failure or issues that prevent them from moving forward. If you are thinking of migrating your workload to Percona XtraDB Cluster, make sure to go through these basics.

log_slave_updates is REQUIRED

You need to have log_slave_updates enabled on the cluster node acting as async slave for replicated events from the async master to be applied to the other

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Scaling Drupal on Multiple Servers with Galera Cluster for MySQL
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April 26, 2013 By Severalnines

This post shows you how to move from a single instance Drupal/MySQL to a multi-server environment. A well designed multi-server deployment not only allows Drupal to scale, but will also enhance redundancy by removing single points of failure. Components used are Apache, PHP, csync2, lsyncd, Keepalived, HAproxy, MySQL Galera Cluster and ClusterControl.

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Slides from Failover or not Failover, that is the question
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Below are the slides from my last talk at this Percona Live Worldwide MySQL Conference. The idea for this talk was proposed by my co-presenter Massimo Brignoli and goes back to a debate on this topic that went through the MySQL blogosphere during last Autumn - which in itself was sparked by an outstanding retrospective published about a MySQL failure at Github.

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Galera pre-deployment check
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One of the first things we do when preparing a client’s infrastructure for Galera deployment is see whether their schema is suitable.

  • Avoiding quirks and edge cases, we can say that Galera simply requires all tables to be InnoDB and also have a PRIMARY KEY (obviously having a PK in InnoDB is important anyway, for InnoDB-internal reasons).
  • We want to know about FULLTEXT indexes. With recent InnoDB versions also supporting FULLTEXT we need to check not just whether a table has such an index, but actually which engine it is.
  • Spatial indexes. While both InnoDB and MyISAM can deal with spatial datatypes (POINT, GEOMETRY, etc), only MyISAM has the spatial indexes.

Naturally, checking a schema in the server is more effective than going through other sources and possibly missing bits. On the downside, the only viable way to get this info out of MariaDB

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Slides and spreadsheets for my MySQL High Availability tutorial
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Good morning Percona Live visitors! Attached to this post you can find a spreadsheet (both LibreOffice or Excel, as you prefer) that you can use towards the end of my tutorial. I've also attached the slides so you can download a copy of them.

SkySQL named 2013 Top 100 Europe winner, more dates added for MySQL & Cloud Database Solutions Day
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We were delighted last week to find out that we’d been named one of the ‘2013 Top 100 Europe’ winning companies by the Red Herring editorial team. Congratulations to all companies involved!

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SkySQL named 2013 Top 100 Europe winner, more dates added for MySQL & Cloud Database Solutions Day
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We were delighted last week to find out that we’d been named one of the ‘2013 Top 100 Europe’ winning companies by the Red Herring editorial team. Congratulations to all companies involved!

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Running Percona XtraDB Cluster in a Sandbox on Ubuntu
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I wanted to do some experimentation with Percona XtraDB Cluster (Galera) and I didn't want to use virtual machines. I'm already using MySQL Sandbox for many other projects so that's the natural choice.

I've downloaded the tarball for Percona XtraDB Cluster 5.5.29 and I've extracted it to ~/opt/mysql/5.5.29-pxc.

Then I've installed 3 nodes:
make_sandbox 5.5.29-pxc -- --sandbox_port 4551 \
--sandbox_directory msb_5_5_29-pxc01 

make_sandbox 5.5.29-pxc -- --sandbox_port 4552 \
--sandbox_directory msb_5_5_29-pxc02 

make_sandbox 5.5.29-pxc -- --sandbox_port 4553 \
--sandbox_directory msb_5_5_29-pxc03 

But when I try to start a node this error happens:
130327 14:21:03 [Note] WSREP: wsrep_load(): loading provider library '/home/dvee
den/mysql/5.5.29-pxc/lib/libgalera_smm.so'















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MariaDB Galera Cluster is a unique technology worth testing
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As alway with new technology there is always different approaches regarding the adoption. You can try to use the bleeding edge features or start with a very standard configuration. My personal advise to new users is to start with the most basic configuration.

This allow you to get familiar with the fundamentals : - how [...]

MariaDB Galera Cluster 5.5.29 Stable (GA) released
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After some final testing and polishing, the MariaDB project and Codership are pleased to announce the release of MariaDB Galera Cluster 5.5.29. This is a Stable (GA) release. MariaDB Galera Cluster links:

About MariaDB Galera  [Read more...]

MySQL Events
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The last MySQL User Group NL meeting was last Friday. It's always nice to learn about MySQL and meet other MySQL users. There were two presentations: one about MySQL User Defined Functions (UDF's) and one about MySQL TCO. The slides are available from the meetup page.

There are already a number of MySQL events announced for the next few months. I'll only list events in the Netherlands and Virtual events.

MySQL Virtual Developer Days
This is a virtual event which will take place on March 19 (EMEA region, NA event is on March 12). There are many interesting topics: Performance Schema, New 5.6 Features, Replication, MySQL Enterprise Monitor
The eVite

SkySQL and MariaDB roadshow
21 March 2013 in Amsterdam
This event  have









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Galera Load Balancer RPMs
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I have created Centos6 RPMs for Codership’s Galera Load Balancer version 0.9.2

License: GPLv2.
Warranty: none at all.

Downloads:
glb-0.9.2-1.x86_64.rpm md5: 49bfb241c6738056f6bf0bce4de6b96b
glb-0.9.2-1.i686.rpm md5: 2491370cb3f78c804831c078250ae611 

Source
SkySQL and MariaDB After Work Meetup with Monty Widenius, the "Father of the MySQL® & MariaDB Databases"
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The SkySQL and MariaDB Roadshow comes to Sweden:

Stockholm 7 February 2013, 16:30-19:30, Dramaten Restaurang Pauli

SkySQL and Monty Program are on the road with our joint - free - roadshow in Stockholm where Monty Widenius will unveil his vision of the future of the MySQL database via MariaDB.

In addition, we will have speakers from Codership/Galera, as well as SkySQL experts.

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[Plus] readers choice 2012 : It’s time to vote!
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Oh yes, 2012 was an incredible year for the MySQL Community!
That’s why I would like to change the rules this year and I would like to offer you a new survey for this [Plus] reader’s choice 2012.

Community users, bloggers and events made the whole community last year, tell us how you used this community?
It will only take 5 minutes of your precious time, votes will be closed Jan. 31.

Vote for what you used! (with your heart, again…)

Note: There is a poll embedded within this post, please visit the site to participate in this post's poll. Note: There is a poll embedded within this post, please visit the site to participate in this post's poll. Note: There is a poll embedded within this post, please visit the site to participate in this post's poll. Note: There is a poll embedded within this post, please visit

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Galera features beyond just HA
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Galera from codership has been getting a lot of attention recently. Galera provides a nice High Availability solution for MySQL where Galera provides synchronous replication with conflict detection using the classic InnoDB Storage Engine. No more playing about with special storage engines of DRBD failover, just continue to use InnoDB and add Galera as the secret sauce for High Availability.

Some of the neat features of Galera are, but are not limited to, multi-master replication, a lightweight implementation of replication and zero failover times due to the multi.master ability. This is not a complete HA solution though, just a component of it, we still need to add some monitoring and failover mechanisms, but as Galera is multi-master this is greatly simplified and can in many cases be handled by the driver or the application with little overhead.



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Notes on "5 Tips for migrating your MySQL server to a Galera Cluster"
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This post comes as response to 5 Tips for migrating your MySQL server to a Galera Cluster by Henrik Ingo (Galera), which is a good read. This post is a bit lengthy which is one of the reasons why I didn't just comment on said post.

The Galera talk in London was indeed well crowded, judging from my own chair. I think there is an obvious interest in Galera, as well as a general thirst for information from real-life experience. I am personally very interested in production stories; either "war stories" or "peace stories" - anything to shed more light on the adoption of this technology.

For disclosure, I have not tried Galera myself as yet. Not on production nor on staging machines. But here's a couple thoughts on Henrik's post:

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Slides from Percona Live UK posted
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Percona Live UK took place this week. It was the second year in a row and once again a great conference. Thank you Percona for bringing the show to Europe, it means a lot for the European MySQL community - many people who don't visit the Santa Clara conference were present in London. It's kind of funny, I even meet more Finnish MySQL users in London than I do at home!

I gave 2 talks. Slides are now posted on Slideshare:

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MariaDB Foundation
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You may have already seen the announcement MariaDB Foundation to Safeguard Leading Open Source Database. We at Open Query wholeheartedly support this (r)evolution of the MySQL ecosystem, which appears to be increasingly necessary as Oracle Corp is seriously dropping the ball with security updates and actually just general development and innovation. Oracle has actually done some very good work, I happily acknowledge that – but security issues are critical, having crashing bugs and incorrect query results in a .28 of a GA release is uncool, and not incorporating awesome development efforts by the community is just astonishing.

MariaDB is where the

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Blogging at codership.com
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As a few LinkedIn friends already noticed, I have started working together with the Galera team at Codership. It is a part time "advisor" position and I still continue my full time work at Nokia, supporting various databases behind the new HERE.com portal.

We get a lot of requests for more blogs and better documentation to explain in-depth how Galera work. That's an area I will work on a lot. The first "deliverable" is out today: the first Galera white paper.

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Attend Percona Live MySQL Conference: London 2012 next week with SkySQL’s 40% discount code
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First 10 to register this week will benefit from a 40% discount

The Percona Live MySQL Conference: London 2012 is just around the corner and we’ll be present both with talks as well as in the exhibition hall alongside other sponsors of the conference.

Talks & Hot Topics

Our very own Ivan Zoratti has the following two talks on Tuesday December 4th:

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Galera gotchas
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We’ve recently implemented Galera clustering and have been pleased with the relatively easy install and implementation. A quick description of galera is the joining of individual mysql dbs as nodes to create a cluster that features multi-threaded synchronous replication, which allows for true high availability while still using your original db and engine (innodb). Likewise, [...]
Slides for Evaluating MySQL HA Alternatives
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Attached are the slides for my MySQL Connect talk Evaluating MySQL High-availability alternatives, which I will present today at 14:30 at the MySQL Connect conference.

A bit unusually I'm posting the material ahead of the talk. The point of the talk is about evaluating each alternative from your own perspective. With that in mind, if you're at the talk with your own laptop, feel free to browse the slides at your own pace from here.

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Previous 30 Newer Entries Showing entries 61 to 90 of 126 Next 30 Older Entries

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