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Percona-Lab/mongodb_consistent_backup: 1.0 Release Explained

 | May 10, 2017 |  Posted In: Backups, Insight for DBAs, Insight for Developers, MongoDB

mongodb_consistent_backup

In this blog post, I will cover the Percona-Lab/mongodb_consistent_backup tool and the improvements in the 1.0.1 release of the tool. Percona-Lab/mongodb_consistent_backup mongodb_consistent_backup is a tool for performing cluster consistent backups on MongoDB clusters or single-replica sets. This tool is open source Python code, developed by Percona and published under our Percona-Lab GitHub repository. Percona-Lab is […]

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MariaDB Handler_icp_% Counters: What They Are, and How To Use Them

 | May 9, 2017 |  Posted In: Insight for DBAs, MySQL

Handler_icp_% counters

In this post we’ll see how MariaDB’s Handler_icp_% counters status counters (Handler_icp_attempts and Handler_icp_matches) measure ICP-related work done by the server and storage engine layers, and how to see if our queries are getting any gains by using them. These counters (as seen in SHOW STATUS output) are MariaDB-specific. In a later post, we will see […]

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Storing UUID and Generated Columns

 | May 3, 2017 |  Posted In: Benchmarks, Insight for DBAs, MySQL

Storing UUID

A lot of things have been said about UUID, and storing UUID in an optimized way. Now that we have generated columns, we can store the decomposed information inside the UUID and merge it again with generated columns. This blog post demonstrates this process. First, I used a simple table with one char field that I called […]

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Percona University in Europe May 9 and May 11

 | May 2, 2017 |  Posted In: Insight for DBAs, Insight for Developers, MongoDB, MySQL, Percona University

Percona University

In 2013 we started Percona University, which consists of technology discussion events held in different cities around the world. The next installments of Percona University in Europe are next week when I fly there for Percona University Berlin (May 9) and Percona University Budapest (May 11). Both events are free to attend, and you are […]

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Percona Live 2017: Deploying MongoDB on Public Clouds

 | April 26, 2017 |  Posted In: Cloud and NoSQL, Insight for DBAs, Insight for Developers, Percona Live

MongoDB on Public Clouds

Today at Percona Live 2017, the afternoon is jam-packed with open source technology lectures filled with community members eager for the latest on the best strategies – including how you should deploy MongoDB on public clouds. Dharshan Rangegowda (CEO of ScaleGrid) discussed deploying MongoDB on public clouds. ScaleGrid provides a fully managed Database-as-a-Service (DBaaS) solution […]

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Percona Live 2017: Day Two Keynotes

 | April 26, 2017 |  Posted In: Big Data, InnoDB, Insight for DBAs, Insight for Developers, MySQL, MySQL 8.0, Percona Live

Percona Live

Welcome to the second day of the Percona Live Open Source Database Conference 2017, and the second set of Percona Live keynotes! It’s a bit rainy outside today, but that isn’t bothering the Percona Live attendees (we’re all indoors learning about new open source technologies)! Day two of the conference kicked off with another four keynote […]

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Percona XtraDB Cluster: SST tmpdir option

 | April 24, 2017 |  Posted In: Insight for DBAs, Percona XtraDB Cluster, XtraDB Cluster

wsrep-stages

In this blog post, I’ll discuss some changes to the behavior of the Percona XtraDB Cluster SST tmpdir option in the latest versions of Percona XtraDB Cluster 5.6.35-26.20-3 and 5.7.17-29.30. Previously, we did not use the path specified by the tmpdir. From Percona XtraDB Cluster 5.6.35-26.20-3 and 5.7.17-29.20, we use the tmpdir option to specify the […]

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Better Than Linear Scaling

 | April 22, 2017 |  Posted In: Hardware and Storage, High-availability, Insight for DBAs, Insight for Developers, MySQL

Scalability

In this blog, we’ll look at how to achieve better-than-linear scaling. Scalability is the capability of a system, network or process to handle a growing amount of work, or its potential to be enlarged to accommodate that growth. For example, we consider a system scalable if it is capable of increasing its total output under […]

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How to Setup and Troubleshoot Percona PAM with LDAP for External Authentication

 | April 21, 2017 |  Posted In: Insight for DBAs, MySQL, Security

Percona Server for MySQL 5.7.18-15

In this blog, we’ll look at how to setup and troubleshoot the Percona PAM authentication plugin. We occasionally get requests from our support clients on how to get Percona Server for MySQL to authenticate with an external authentication service via LDAP or Active Directory. However, we normally do not have access to client’s infrastructure to […]

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