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Showing entries 1 to 10 of 61 10 Older Entries

Displaying posts with tag: installation (reset)

How to setup High Availability PrestaShop on multiple servers with MariaDB Galera Cluster
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November 7, 2014 By Severalnines

PrestaShop is a popular open source e-commerce software powering over 200,000 online stores, according to the company. We’ve seen a bit of interest into high availability PrestaShop setups, so this post will show you how to achieve that on multiple servers. Note that this setup not only caters for failures, but by load balancing traffic across multiple servers, it also allows the system to scale and handle more users.

This post is similar to our previous posts on web application scalability and high availability:

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Experimenting with the new Data Dictionary Labs Release
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Labs releases are intended to provide early access to new features. As Gopal notes in his recent blog post About the Data Dictionary Labs Release, there is a notable restriction where upgrading from any previous MySQL database version is not supported.

Today, I thought I would demonstrate how to get the data dictionary lab up and running on a fresh Ubuntu 14.04 installation:

# Download from labs.mysql.com
wget …
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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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Suggestions for transitioning into Strict SQL-Mode
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As MySQL 5.6 now enables the SQL Mode STRICT_TRANS_TABLES for new installations, I have been running into users who have been upgrading from previous versions, and not quite sure how to test their application for compatibility with this new default.

For some applications converting warnings to errors presents an unknown-unknown, in that the operators of the system can not easily detect what may break. Certainly many deployments will have QA environments, but there is always some fear production queries are just a little bit different.

Since sql_mode is configurable on a per-session basis, there are some strategies …

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How to Manage All Your MySQL or MariaDB Databases
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September 1, 2014 By Severalnines

According to Forrester, a DBA in a large enterprise manages between 8 and 275 databases, with the industry average being 40 databases to a DBA. Larger databases usually require extra effort around tuning, backup, recovery and upgrade. Cloud, as well as automation and management tools can help improve the number of databases managed by one DBA.  

 

With that background, we were pretty excited to introduce support for management of single-instance MySQL and MariaDB …

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How to Install ClusterControl on Servers without Internet Access
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August 18, 2014 By Severalnines

There are several ways to get ClusterControl installed on your database infrastructure, as described in the ClusterControl Quick Start Guide. One simple way is to use an installation script, install-cc.sh. This script automates the whole process, and is executed on the host where you want to install ClusterControl. By default, it assumes the host has internet connectivity during the installation process.

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Build a MySQL Fabric Farm in one step using AWS CloudFormation
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I have been building a CloudFormation template for MySQL Fabric as an experiment to kick the tyres and further my understanding of how it all works.

For those not familiar, CloudFormation is a way of representing a collection of Amazon Cloud resources (a "stack") into a static json file (a "template"). In my previous company, we managed our AWS account almost exclusively via CloudFormation, and there are two key advantages I see with managing resources via templates:

  • It allows for all environments to be synchronized (dev/qa/production). …
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Using MySQL Sandbox to setup a MySQL Fabric cluster in development
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With Fabric's official GA release this week, I thought I would post a spin on how to setup a development environment loosely based on the Fabric Quick Start guide in the manual.

The notable change, is the use of MySQL Sandbox for bootstrapping each of the MySQL instances.

Step 1: Install the MySQL Utilities + Python Connector

In my case, I downloaded:

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Batch mode and expired passwords
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A series of related discussions triggered by difficulty in setting passwords via scripts using the mysql command-line client when an account has an expired password caused me to look into the interaction between expired passwords and batch mode, and this blog post resulted.  I …

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MySQL defaults evolution
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MySQL, the original brand, the one developed by the MySQL team at Oracle, is steadily evolving. You can feel it if you try every new release that comes out of the milestone release cycle. Or even if you don’t try all of them, just testing a release once in a while gives you something to think about.

The engineers at Oracle are trying hard to improve the defaults. If you are the out-of-the-box type, and just install the new version on top of the previous one, leaving the same setup in place, you may be up for a for a few surprises. It’s the marketing, see? They tell you that just by …

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Showing entries 1 to 10 of 61 10 Older Entries

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