Overview

When working with Amazon AWS Aurora, there are some steps to consider when trying to get data out of an active Aurora master into a slave, potentially into a EC2 instance or offsite in another data centre. Creating an external mysql to Aurora gives the option to move out of Aurora, or to have the flexibility to move data around as desired. With AWS RDS instances this task is pretty simple because you can do the following :

1. Create a read replica
2. Stop the slave process
3. Capture the positioning
4. Dump the database

With Aurora it’s a little trickier, because a read replica in Aurora has no slave process. All of the replication is handled on the back end and cannot be controlled. However, setting up an external slave can be done.

Amazon AWS Documentation

In …

Come speak at Percona Live Europe, and get access to the entire conference.

The Percona Live Open Source Database Performance Conference Europe 2016 is the premier event for the rich and diverse MySQL, MongoDB and ODBMS ecosystems in Europe. Attendees include DBAs, SysAdmins, developers, architects, CTOs, CEOs, and vendors from around the world. It’s a great place to meet and participate with the open source community.

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Author’s note: For the most up-to-date directions on setting up LDAP authentication using PAM and user or group mapping with MariaDB, please see the relevant MariaDB documentation page. In this blog post, I will demonstrate how to configure MariaDB to use LDAP authentication and group mapping. I have previously written blog posts about configuring PAM authentication and user mapping with ... Read More

Welcome to this week’s Planets9s, covering all the latest resources and technologies we create around automation and management of open source database infrastructures.

Thanks to everyone who joined us for this week’s webinar on how to monitor MongoDB (for the MySQL DBA).

Art van Scheppingen, Senior Support Engineer at Severalnines, discussed the most important metrics to keep an eye on for MongoDB and described them in plain MySQL DBA language.

This webinar looked at answering the following questions (amongst others):

• Which status overviews and commands really matter to you?
• How do you trend and alert on them?
• What is the meaning behind the metrics?

It also included a look at the open source tools available for MongoDB monitoring and trending. Finally, Art did a demo of ClusterControl’s MongoDB metrics, dashboards, custom alerting and other features to track and optimize the performance of your MongoDB system.

…

This Week’s log buffer edition covers some of the useful blog posts from Oracle, SQL Server and MySQL.

Oracle:

ASM disks – lsdg compared with the v$asm_diskgroup view

Can a query on the standby update the primary ?

What should I know about SQL?

Setting Environment Variables in Application Server/Process Scheduler Tuxedo Domains

Oracle …

Over the last year, the Ceph world drew me in. Partly because of my taste for distributed systems, but also because I think Ceph represents a great opportunity for MySQL specifically and databases in general. The shift from local storage to distributed storage is similar to the shift from bare disks host configuration to LVM-managed disks configuration.

Most of the work I’ve done with Ceph was in collaboration with folks from Red Hat (mainly Brent Compton and Kyle Bader). This work resulted in a number of talks presented at the Percona Live conference in April and the Red Hat Summit San Francisco at the end of June. I could write a lot about using Ceph with databases, and I hope this post …

Want to become one of the Percona Live Europe MongoDB speakers? Read this blog for details.

The Percona Live Europe, Amsterdam call for papers is ending soon and we are looking for MongoDB speakers! This is a great way to build your personal and company brands. It also provides you with a complimentary full conference pass (which is good for your budget)!

If you haven’t submitted a paper yet, here are a list of ideas we would love to see covered at this conference:

• MongoDB Engines: When to use them
• MongoDB Sharding: A beginners guide
• …

When it comes to building database applications and solutions, developers, DBAs, engineers and architects have a lot of new and exciting tools and technologies to play with, especially with the Hadoop and NoSQL environments growing so rapidly.

While it’s easy to geek out about these cool and revolutionary new technologies, at some point in the development cycle you’ll need to stop to consider the real-world business implications of the application you’re proposing. After all, you’re bound to face some tough questions, like:

Why did you choose that particular database for our mission-critical application? Can your team provide 24/7 support for the app? Do you have a plan to train people on this new technology? Do we have the right hardware infrastructure to support the app’s deployment? How are you going to ensure there won’t be any bugs or security vulnerabilities?

If you don’t have a plan for …

Please join Sveta Smirnova for a webinar Thursday, July 14 at 10 am PDT (UTC-7) on an Introduction Into Storage Engine Troubleshooting.

The number of MySQL storage engines provide great flexibility for database users, administrators and developers. At the same time, engines add an extra level of complexity when it comes to troubleshooting issues. Before choosing the right troubleshooting tool, you need to answer the following questions (and often others):

• What part of the server is responsible for my issue?
• Was a lock set at the server or engine level?
• Is a standard or engine-specific tool better?
• Where are the engine-specific options?
• How to …