In November last year I announced a program I wrote called pstop. I hope that some of you have tried it and found it useful. Certainly I know that colleagues and friends use it and it has proved helpful when trying to look inside MySQL to see what it is doing. A recent suggestion provoked me … Continue reading new to pstop – vmstat style stdout interface

This tutorial shows how to install an Ubuntu 15.04 (Vivid Vervet) server (with Apache2, BIND, Dovecot) for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache or nginx web server, Postfix mail server, Courier or Dovecot IMAP/POP3 server, MySQL, BIND or MyDNS nameserver, PureFTPd, SpamAssassin, ClamAV, and many more. This setup covers the installation of Apache (instead of nginx), BIND (instead of MyDNS), and Dovecot (instead of Courier).

by Erkan Yanar

Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications. Consisting of Docker Engine, a portable, lightweight runtime and packaging tool, and Docker Hub, a cloud service for sharing applications and automating workflows, Docker enables apps to be quickly assembled from components and eliminates the friction between development, QA, and production environments. As a result, IT can ship faster and run the same app, unchanged, on laptops, data center VMs, and any cloud.

This is the first of a series of blog posts about using Galera with Docker. In this post, we are going to get started with Docker and Galera:

* Build a basic Docker Image (which we will extended in later posts)

* Deploy on a test cluster on a local machine

The instructions have been tested on Ubuntu 14.04 with Docker 1.5.

Build a basic Docker image

In …

Codership will be joining OpenStack Summit Vancouver May 18-22. Visit our booth T52. Codership will have demo theater presentation about Galera in cloud, Time Warner Cable will tell how they use Galera and MariaDB gives best practises to use MariaDB Galera Cluster.

OpenStack Summit is the must-attend OpenStack event. The OpenStack Summit is a five-day conference for developers, users, and administrators of OpenStack Cloud Software. It’s a great place to get started with OpenStack.

Codership’s demo theater presentation at Vancouver:

Do More with Galera Cluster in Your OpenStack Cloud

Galera Cluster is already the way to achieve active/active HA for OpenStack back-end databases. Yet, it is possible to do a great deal more: Galera can provide cloud user with a fully redundant database cluster in place of the traditional …

VividCortex, the monitoring solution for the modern data system, continues building a product that enables IT departments to manage distributed, diverse systems effectively and improve workflow.

Charlottesville, Virginia (PRWEB) May 05, 2015 - VividCortex, the monitoring solution for the modern data system, received the MySQL Community Award for Application of the Year at Percona Live 2015. Since launching in April 2014, the SaaS product for database monitoring has provided unparalleled query insight and given customers a clear view of what is happening on their production servers, allowing companies to improve application and server performance and maximize resources. This award recognizes the new standard for database monitoring, one that goes beyond graphs and charts to provide actionable data. VividCortex will continue to build a service that enables IT teams to manage distributed systems and continuous workflows …

In the MySQL Labs version of MySQL version 5.7, there is a new HTTP plugin. The HTTP plugin documentation from the labs site provides this information (from MySQL Labs):

The HTTP Plugin for MySQL adds HTTP(S) interfaces to MySQL. Clients can use the HTTP respectively HTTPS (SSL) protocol to query data stored in MySQL. The query language is SQL but other, simpler interfaces exist. All data is serialized as JSON. This version of MySQL Server HTTP Plugin is a Labs release, which means it’s at an early development stage. It contains several known bugs and limitation, and is meant primarily to give you a rough idea how this plugin will look some day. Likewise, the user API is anything but finalized. Be aware it will change in many respects.

In …

Being schemaless is one of the key features of MongoDB. On the bright side this allows developers to easily modify the schema of their collections without waiting for the database to be ready to accept a new schema. However schemaless is not free and one of the drawbacks is write amplification. Let’s focus on that topic.

Write amplification?

The link between schema and write amplification is not obvious at first sight. So let’s first look at a table in the relational world:

mysql> SELECT * FROM user LIMIT 2;
+----+-------+------------+-----------+-----------+----------------------------------+---------+-----------------------------------+------------+------------+
| id | login | first_name | last_name | city      | country                          | zipcode | address                           | password   | birth_year | …

In previous topic, we have covered “Transportable Tablespace” concept by copying and importing table’s tablespace to remote server. See -> Copying Tablespaces to Remote Server

The idea is copying tablespace file to remote server, in remote server you must create identical database names and table names manually, then you should discard new table’s tablespace file and import new copied one.

To achieve this you must have running MySQL version >= 5.6, innodb_file_per_table=1 and you must know “CREATE statement” of table.

Let’s to change our test condition. Assume that, you have MySQL server and you have taken physical backup of your server (you can use Percona XtraBackup, …

Incremental backups in MySQL were always a tricky exercise. Logical backup tools like mysqldump or mydumper don’t support incremental backups, although it’s possible to emulate them with binary logs. And with snapshot-based backup tools it’s close to impossible to take incremental copies.

Percona’s XtraBackup does support incremental backups, but you have to understand well how it works under the hood and be familiar with command line options. That’s not so easy and it’s getting worse when it comes to restoring the database from an incremental copy. Some shops even ditch incremental backups due to complexity in scripting backup and restore procedures.

With TwinDB incremental backups are easy. In this post I will show how to configure MySQL incremental backups for a replication …

VividCortex received the MySQL Community Award for Application of the Year. This is an acknowledgement of the work put into developing a smarter monitoring tool providing deep query insights. We continue to be extremely excited about what’s on the horizon. Read the full press release here.