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Displaying posts with tag: Technical Blog (reset)
A Useful Tool to Centrally Manage Many MySQL Instances

I have been talking with a group of folks who have been making a product that has lots of free functionality, including the ability to centrally manage many MySQL instances. The administration functions include starting and stopping MySQL, seeing status and system variables, seeing and managing the MySQL config file (/etc/my.cnf), seeing and managing accounts, a small dashboard of overall health graphs, and more.

With this free tool you can look at and manage local and remote databases. It supports ssh tunneling, including ssh using password-protected ssh keys. It’s pretty neat, and I have been working with the product manager to add features. I think this took will become the de facto standard for centralized GUI administration of MySQL.

The tool is
MySQL workbench….Surprise! One of the best new features for the administrator is that you can now create an administration connection for an existing workbench connection …

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An SSH tool to make your life easier

A MySQL user group member saw that I use Poderosa as my ssh-on-Windows tool, and asked why I did not use PuTTY. My response was that I like having tabbed windows and hate having to keep opening another PuTTY program every time I want to open another connection. With Poderosa I can open a new connection with Alt-N, and I can even connect directly to Cygwin with an icon.

But Poderosa is not the tool I wanted to mention….Another user group member mentioned PuTTY Connection Manager. It wraps around PuTTY and gets the existing saved connections, makes a nicely tabbed browsing window where you can open sessions by double-clicking the connections, which are now listed on the right-hand side.

See screenshot below:

I have not played with …

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sort_buffer_size and Knowing Why

In How to tune MySQL’s sort_buffer_size, Baron gives a condescending viewpoint on how to tune the sort_buffer_size variable in MySQL. In a much-nicer-nutshell, his advice is “do not change sort_buffer_size from the default.”

Baron did not explain the logic behind his reasoning, he handwaves that “people utterly ruin their server performance and stability with it,” but does not explain how changing the sort_buffer_size kills performance and stability. Regardless of how respected and knowledgeable the source, NEVER take any advice that tells you what to do or how to do it without understanding WHY.

This article will explain the “why” of Baron’s point, and it will also talk more about understanding why, an integral part against the “Battle against any guess.” Baron’s recommendation to leave …

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The Doom of XtraDB and Percona Server?

In The Doom of Multiple Storage Engines, Peter talks about how the storage engine concept of MySQL is usually spoken of in positive terms, but there are many negatives.

I have a hard time trying to figure out the deeper meaning behind Peter’s post, given that Percona writes a storage engine for MySQL, XtraDB. Does this mean that Percona will stop developing XtraDB? Does this mean that the Percona Server will diverge farther and farther away from MySQL so that they’re not compatible any more and migrating from MySQL to Percona Server is very difficult?

Or maybe it’s just that Peter is saying one thing and doing the opposite; which just seems wrong because that would be blatant hypocrisy on Percona’s part.

(This idea was a comment on the blog post but seems to be trapped in the spam filter, so I’m …

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Log Buffer #188, a Carnival of the Vanities for DBAs

It’s Friday already, and we know what that means! Log Buffer, the industry’s weekly review of database blogs is here again for your reading pleasure in the 188th issue.

Starting off this week’s issue is a request from Mark Grennan a DBA who would like to let the community know about his blog MySQL Fan Boy, where he wrote an interesting post on including a script to replace MySQL table files on a live system, making it faster and limiting locking on large table loads. Also a post this week on whether MariaDB is a drop in …

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Liveblogging: Senior Skills: Sysadmin Patterns

The Beacon Pattern:
- This is a “Get out of the business” pattern
- Identify an oft-occurring and annoying task
- Automate and document it to the point of being able to hand it off to someone far less technical

Example:
- System admins were being put in charge of scheduling rooms in the building
- They wrote a PHP web application to help them automate the task
- They refined the app, documented how to use it, and handed it off to a secretary
- They have to maintain the app, but it’s far less work.

The Community Pattern:

- Prior to launch of a new service, create user documentation for it.
- Point a few early adopters at the documentation and see if they can use the service with minimal support
- Use feedback to improve documentation, and the service
- Upon launch, create a mailing list, forum, IRC channel, or Jabber chat room and ask early …

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Liveblogging: Seeking Senior and Beyond

I am attending the Professional IT Community Conference – it is put on by the League of Professional System Administrators (LOPSA), and is a 2-day community conference. There are technical and “soft” topics — the audience is system administrators. While technical topics such as Essential IPv6 for Linux Administrators are not essential for my job, many of the “soft” topics are directly applicable and relevant to DBAs too. (I am speaking on How to Stop Hating MySQL tomorrow.)

So I am in Seeking Senior and Beyond: The Tech Skills That Get You Promoted. The first part talks about the definition of what it …

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MySQL Track at Kaleidoscope

On Monday, Ronald Bradford posted that the independent Oracle Developer Tools User Group had opened up their Kaleidoscope Conference, well-known throughout the Oracle community for in-depth technical sessions for developers, to the MySQL community. Giuseppe Maxia posted his thoughts on Tuesday.

We have confirmed that there will be an entire MySQL track at Kaleidoscope! Because Kaleidoscope is less than 8 weeks away, we could not go through a standard call for papers. Ronald and I have been working to come up with appropriate topics and speakers for an audience that uses MySQL but is probably more familiar with Oracle. We contacted folks we thought …

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Log Buffer #187, a Carnival of the Vanities for DBAs

Welcome to Log Buffer. This week’s issue #187 was another group effort. Thanks to all our contributors – you rock!

Suggested by Pythian’s Bradd Piontek, is a post he really liked because he used to write pipelined functions for Dynamic Search queries, – Tom Kyte’s something new I learned about estimated cardinalities. He’s also highlighted something new Tom learned about sqlplus. And the fact that Richard Foote announced the …

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Log Buffer #186, a Carnival of the Vanities for DBAs

Welcome to the 186th Edition of Log Buffer. Lots to report this week, so read on…

In Oracle news:

We begin with Gary Myers at the Sydney Oracle Lab who mixes GUI and CLI and shows how to manage your database from EMACS. You have to read a post that starts with: “There is a place of shadow, a place between the dark lands of the command-line interface, and the shining brightness of the GUI. In the days of yore, many dwelled in the shadow lands, but almost all have been attracted to the lights of SQL Developer…”

Tanel Poder gives a step by step tour of his …

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