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Displaying posts with tag: upgrade (reset)

ClusterControl 1.2.8 Released
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September 17, 2014 By Severalnines

The Severalnines team is pleased to announce the release of ClusterControl 1.2.8. This release contains key new features along with performance improvements and bug fixes. We have outlined some of the key new features below. 

 

Highlights of ClusterControl 1.2.8 include:

  • YUM/APT repositories for ClusterControl
  • Deployment and scaling of single-node MySQL, MariaDB and MongoDB
  • Alerts and incident tracking with PagerDuty 
  • Unified Event Viewer
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Making MySQL Better More Quickly
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With the upcoming release of MySQL 5.7 I begin to see a problem which I think needs attention at least for 5.8 or whatever comes next.

  • The GA release cycle is too long, being about 2 years and that means 3 years between upgrades in a production environment
  • More people use MySQL and the data it holds becomes more important. So playing with development versions while possible becomes harder.  This is bad for Oracle as they do not get the feedback they need to adjust the development of new features and have to best guess the right choices.
  • Production DBAs do want new features and crave them if it makes our life easier, if performance improves, but we also have to live in an environment which is sufficiently stable.  This is a hard mixture of requirements to work with.
  • In larger environments the transition from one major version to another, even when
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The Road to MySQL 5.6: Default Options
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When you're testing out a new version of MySQL in a non-production environment there is a temptation to go wild and turn on all kinds of new features.  Especially if you're reading the changelogs or the manual and scanning through options.  You want to start with the most reasonable set of defaults, right?  Maybe you're even doing benchmarks to optimize performance using all the new bells and whistles.

Resist the temptation!  If your goal is to upgrade your production environment then what you really want is to isolate changes.  You want to preform the upgrade with as little to no impact as possible.  Then you can start turning on features or making changes one-by-one.

Why?  Anytime you're doing a major upgrade to something as fundamental as your core RDBMS, there are many ways things can go wrong.  Performance



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Announcing Severalnines Package Repository
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September 9, 2014 By Severalnines

We are excited to announce the availability of YUM/APT repositories for ClusterControl, making new releases of ClusterControl  easily accessible using YUM or APT package managers. The repo is found at http://repo.severalnines.com, with instructions provided on the landing page. Our Cluster Configurators will be using these repositories. As a result, users upgrading from s9s_upgrade_cmon starting from version v.1.2.8 will be configured with the package repository.

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The Road to MySQL 5.6 -- A DBA Perspective
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We've all heard the hype.  MySQL 5.6 is packed with amazing new features that address all our database problems.  5.6 deals with replication and HA and performance and monitoring and security and features.  It just may cure cancer.

In fact it's been out for ages.  It went GA 

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Doing a rolling upgrade of Percona XtraDB Cluster from 5.5 to 5.6
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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 prefer a rolling upgrade to avoid downtime and ensure 5.6 is behaving in a stable fashion before putting all of production on it. The official guide to a rolling upgrade can be found in the PXC 5.6 manual. This blog post will attempt to summarize the basic process.

However, there are a few caveats to trying to do a rolling 5.6 upgrade from 5.5:

  • If you mix Galera 2 and Galera 3 nodes, you must set
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    Password expiration policy in MySQL Server 5.7
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    I’ve previously noted my wish to have a comprehensive password policy in MySQL Server.  MySQL Server 5.7.4 takes a significant step towards this goal by adding native support for enforcing password lifetime policy.  This complements the validate_password plugin introduced in MySQL Server 5.6, which helps ensure adequate password complexity, and builds on the password expiration mechanism also introduced in MySQL Server 5.6.  This new feature has a

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    SF MySQL Meetup Presentation: Changes in MySQL 5.7
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    Last Wednesday, I spoke at the San Francisco MySQL Meetup on the topic of changes coming in MySQL 5.7 (and later).  We actually went through two different slide decks; the first on features being considered for deprecation in MySQL 5.7 (or later), and the second set providing a brief overview of the new features and benefits already introduced in MySQL 5.7 via the development milestone releases (DMRs) published to date.  A big thanks to the entire SF Meetup group, and in particular the organizers (Erin, Mike and Darren), for having me.  The event was streamed and recorded, and you can view the full presentation on YouTube.  The slide deck can be found here.

    The discussion around proposed

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    Upgrading from MySQL 5.1 to MariaDB 5.5
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    In my last post, a tale of two MySQL upgrades, a few folks asked if I would outline the process we used to upgrade, and what kind of downtime we had.

    Well, the processes were different for each upgrade, so I will tackle them in separate blog posts. The first step was to upgrade all our MySQL 5.1 machines to MariaDB 5.5. As mentioned in the previous post, MariaDB’s superior performance for subqueries is why we switched – and we switched back to MySQL for 5.6 to take full advantage of the performance_schema.

    It is not difficult to blog about our procedure, as we have documentation on each process. My first tip would be to do that in your own environment. This also enables other folks to help, even if they are sysadmins and not normally DBAs. You may notice the steps

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    Welcome Tungsten Replicator 2.1.0!
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    Overview


    First off, the important news. Tungsten Replicator 2.1.0 was released today.
    You can download it and give it a try right now.


    Second, I would say that I am quite surprised at how much we have done in this release. The previous release (2.0.7) was in February, which is just a few months ago, and yet it looks like ages when I see the list of improvements, new features and bug fixes in the Release Notes. I did not realized it until I ran my last batch of checks to test the upgrade from the previous release, which I hadn’t run for quite a long





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    Showing entries 1 to 10 of 32 10 Older Entries

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