Many organizations have MySQL or MariaDB databases at the core of their business—for processing and storing product sales, collecting information related to services offered, or just providing essential information to customers. As a result, keeping these databases running continuously can be critical for the success of an organization.

There are many components of a database system that a database administrator will need to consider for maintaining high availability. We considered server equipment (e.g., memory) in a previous introductory article. Now let’s look at using multiple servers for your MySQL and MariaDB databases—let’s look at replication.

Replication Overview

One common and effective way to structure a highly available database system is through some form of database replication. There are a few …

Keeping databases running consistently and continuously is crucial to many organizations. When your site or application fails to load because of problems with your databases, you risk losing revenues—especially a business with a high traffic site which is the main source of revenues. If it happens often enough, you’ll lose not only transactions but customers.

There are many reasons why a database system may be unavailable, or at least not consistently available. It could be straightforward problems with your databases, or it could be hardware limitations. There are several potentially weak components of a database system. It’s important to know where are the potential weak points and to have a clear sense of what’s required to maintain a highly available database system.

If this concept is moderately new to you, it may be overwhelming. However, please understand that it’s achievable and learnable. You can start by focusing …

Keeping databases running consistently and continuously is crucial to many organizations. When your site or application fails to load because of problems with your databases, you risk losing revenues—especially a business with a high traffic site which is the main source of revenues. If it happens often enough, you’ll lose not only transactions but customers.

There are many reasons why a database system may be unavailable, or at least not consistently available. It could be straightforward problems with your databases, or it could be hardware limitations. There are several potentially weak components of a database system. It’s important to know where are the potential weak points and to have a clear sense of what’s required to maintain a highly available database system.

If this concept is moderately new to you, it may be overwhelming. However, please understand that it’s achievable and learnable. You can start by focusing …

 All you need for monitoring MySQL servers

Data security is paramount for individuals and corporations alike. Today, it is inevitable not to notice the importance levied on hosted MySQL like RDS, Aurora, etc. Managing MySQL servers is becoming a daunting task, given the exponential growth in data and the number of users with each working days.

Below are the key aspects that need to be part of your wishlist.

1) Leveraging Performance Schema(P_S) and SYS Schema

Performance Schema was introduced in MySQL 5.5.3 and further upgraded through version 5.7. It has its own storage engine, provides access to low-level server execution information while minimizing the impact on server performance. There is a trade-off between the time you can save by using Performance Schema and the load it adds to the server. It can optimize server performance and save time when used in an efficient manner.

You can also target …

All you need for monitoring MySQL servers. Data security is paramount for individuals and corporations alike. Today, it is inevitable not to notice the importance levied on hosted MySQL like RDS, Aurora, etc. Managing MySQL servers is becoming a daunting task, given the exponential growth in data and the number of users with each working days.

Below are the key aspects that need to be part of your wishlist.

1) Leveraging Performance Schema(P_S) and SYS Schema

Performance Schema was introduced in MySQL 5.5.3 and further upgraded through version 5.7. It has its own storage engine, provides access to low-level server execution information while minimizing the impact on server performance. There is a trade-off between the time you can save by using Performance Schema and the load it adds to the server. It can optimize server performance and save time when used in an efficient manner.

You can also target queries that …

Not so long ago I had a customer who experienced data loss after MySQL restart. It was really puzzling. MySQL was up & running for many months, but after the customer restarted MySQL server all tables have gone. The tables were still visible in SHOW TABLES output, but they were not readable:

mysql> show tables like 'actor';
+--------------------------+
| Tables_in_sakila (actor) |
+--------------------------+
| actor                    |
+--------------------------+
1 row in set (0.00 sec)

mysql> select * from actor;
ERROR 1146 (42S02): Table 'sakila.actor' doesn't exist
mysql>

To understand what’s happened let make some experiments (WARNING: Don’t do it on production or with valuable data).

Let’s take a healthy MySQL instance with installed sakila database.

While MySQL is …

We already have seen two articles for setting up MySQL Monitoring with Nagios and Percona Monitoring Tools for Nagios. Those posts covers configuration of nagios on single instance. Though following…

The post How to Add Remote MySQL Server to Nagios Monitoring first appeared on Change Is Inevitable.

We’ve heard lots in recent years about Big Data and the alternative models of data management and processing, like Hadoop and NoSQL. But truth be told, relational databases are still the workhorses of most of today’s small and medium sized businesses. Relational DBs date back over 40 years and SQL skills are fairly common, and they’re known to be highly secure.

MySQL is the world’s second most popular relational database management system (RDMS) and is the most popular open-source version of the database. It’s easily accessible and is often known to be part of the LAMP web development stack, standing for the ‘M’ in the acronym of popular tools, along with Linux, Apache, and PHP/Perl/Python. The fact that MySQL is free, easy to setup and scales fast are some of the main reasons why it’s the best match for many SMBs.

…

First, I would like to invite you to my webinar, “Monitoring All (Yes, All!) MySQL Metrics with Percona Cloud Tools,” on Wednesday, June 25 at 10 a.m. Pacific Daylight Time, where I will talk on the
new features in Percona Cloud Tools, including monitoring capabilities.

In this post I’d like to show the cool and interesting things we’ve implemented in Percona Cloud Tools, including the recently released agent that Daniel also talks about here in this post.

Basically our agent allows users to collect ALL MySQL metrics plus important …

Since 2011 e-commerce has grown from $856,000,000.00 to closing out 2013 at more than $1,248,000,000,000.00 in global revenues, a nearly 41% growth rate over a two year span. The forecast for 2014  is targeted at $1,500,000,000,000.00, another 20% increase is gross revenues (see chart below). With trillions of dollars in play year on year now, and astounding revenue growth rates still ahead, it is critical that any e-commerce site be diligently monitoring not just their website uptime, but more importantly their Web applications. Obviously it is critical that your customers be able to get to your website, but if it doesn’t build fast and complete client requests and transactions even faster then you will be losing clients and revenue at an alarming rate. The latest figures show that if your site doesn’t do a full page load in 3 seconds or less, …