High Availability
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The recent announcement of the Microsoft SQL Server 2012 release emphasized the high availability features added to this version. Here is what I could find after some digging through the documentation: AlwaysOn Failover Cluster Instances: As part of the S... 0 Published 30 days ago in
myNoSQL • NoSQL Databases and...: Profile, Details
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Improvements to Hadoop Availability: Six areas to improve Hadoop availability when dealing with common scenarios like host maintenance, configuration changes, software upgrades, host failures: A number of efforts are under way to improve Hadoop availabil... 0 Published 100+ days ago in
myNoSQL • NoSQL Databases and...: Profile, Details
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This post is the fifth of a series that started here. From the previous posts of this series, we now have nearly everything setup, only a few pieces are missing. One of the missing pieces is the Pacemaker script that run on the MySQL instance. First, th... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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Working with customer, I faced pretty nasty bug, which is actually not rare situation , but in this particular there are some lessons I would like to share. The case is pretty much described in bug 55981, or in pastebin. Everything below is related to In... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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This post is the fifth of a series that started here. From the previous posts of this series, we now have an instance restart script that can restart the database node in case of failure and automatically reconfigure Pacemaker and the other servers that n... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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This post is the fourth of a series that started here. From the previous of this series, we now have resources configured but instead of starting MySQL, Pacemaker invokes a script to start (or restart) the EC2 instance running MySQL. This blog post descr... 1 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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This post is the third of a series that started here. From the previous of this series, we now have two working EC2 instances that are EBS based. The first instance is the monitor, usually an m1.small type instance and the second instance is hamysql, a l... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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This post is the second of a series that started here. The first step to build the HA solution is to create two working instances, configure them to be EBS based and create a security group for them. A third instance, the client, will be discussed in par... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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Like many, I have been seduced by the power and flexibility of Amazon EC2. Being able to launch new instances at will depending on the load, is almost too good to be true. Amazon has also some drawbacks, availability is not guaranteed and discovery prot... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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MySQL 5.1 introduces row based binary logging. In fact, the default binary logging format in GA versions of MySQL 5.1 is 'MIXED', which means it is very likely that some of your binary log entries will be written in a row-based fashion instead of the act... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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In the last 2 blog posts about High Availability for MySQL we have introduced definitions and provided a list of ( questions that you need to ask yourself before choosing a HA solution. In this new post, we will cover what is the most popular HA solution... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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First time I heard about Galera on Percona Performance Conference 2009, Seppo Jaakola was presenting “Galera: Multi-Master Synchronous MySQL Replication Clusters”. It was impressed as I personally always wanted it for InnoDB, but we had it in ... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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After having reviewed the definition my the previous post (The definitions), the next step is to respond to some questions. Do you need MySQL High-Availability? That question is quite obvious but some times, it is skipped. It can also be formulated R... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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As my first contribution to the MySQL Performance Blog, I joined Percona at the beginning September, I chose to cover the various high-availability (HA) options available for MySQL. I have done dozen of MySQL HA related engagements while working for Sun/... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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It seems pretty common to find customers install DRBD for the wrong reasons. There are many pros/cons to compare DRBD to replication, but I’ve managed to cut down my spiel I give to customers to these two points: DRBD’s aim (assuming replica... 0 Published 100+ days ago in
MySQL Performance Blog: Profile, Details
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