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436 blog posts in 13 categories

Online schema change with gh-ost - throttling and changing configuration at runtime

When performing schema changes online, it is important to be able to control the performance impact on our running databases. This blog post discusses gh-ost’s throttling mechanism. We will also cover the runtime configuration changes that gh-ost allows.

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How to use the ClusterControl Query Monitor for MySQL, MariaDB and Percona Server

Bad query performance is probably the most common problem that a database administrator has to deal with. This blog post shows you how to use ClusterControl to monitor queries on your MySQL, MariaDB or Percona Server.

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Secure MongoDB and Protect Yourself from the Ransom Hack

Recently, several attackers were able to break into thousands of MongoDB systems, wipe the databases and leave a ransom note. This could have been prevented if those in charge would have followed some standard security procedures. This blog post describes how to protect yourself from MongoDB ransomware. What is it, why is it a problem and what can you do to protect yourself against it?

Tips and Tricks - How to shard MySQL with ProxySQL in ClusterControl

Sharding can be a painful exercise. Databases need to be split on multiple servers, data migrated, and applications have to be tweaked to be aware of the shards. However, there are ways to make this less painful. This blog explains how to use ProxySQL to shard a table to another cluster in ClusterControl without changing your application.

How to perform online schema changes on MySQL using gh-ost

This blog post shows you how to use GitHub’s gh-ost to perform an online schema change on a MySQL master-slave replication setup.

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How to Perform Efficient Backup for MySQL and MariaDB

There are a number of ways to backup MySQL and MariaDB, each comes with pros and cons. An effective backup strategy will depend on the requirements of the business, the environment you operate in, and the resources at your disposal.

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Online schema change for MySQL & MariaDB - comparing GitHub’s gh-ost vs pt-online-schema-change

Online schema changes are a fact of life for any DBA. While there are tools to assist, for example, Percona’s pt-online-schema-change, it does not come without drawbacks. GitHub released a new online schema change tool called gh-ost. This post looks at how gh-ost compares to pt-online-schema-change, and how it can be used to address some limitations.

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The choice of MySQL storage engine and its impact on backup procedures

MySQL offers multiple storage engines to store its data, with InnoDB and MyISAM the most popular ones. This has an impact on how you design and run your backup procedures.

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New whitepaper - the DevOps Guide to database backups for MySQL and MariaDB

Check out our free new whitepaper on database backups, which discusses in detail the two most popular backup utilities available for MySQL and MariaDB, namely mysqldump and Percona XtraBackup.

Getting Social With Severalnines

This blog details how you can connect with Severalnines and learn about and provide feedback for ClusterControl and NinesControl.  We utilize our social channels differently so make sure to follow the ones that best align with your needs.