Severalnines Blog
The automation and management blog for open source databases

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49 blog posts in 13 categories

MySQL Performance Cheat Sheet

You would be surprised by the number of MySQL installations running default configurations, regardless of the workload. However, what works well for a read-intensive workload might not work as well for a write-intensive one. Configuration parameters also need to take into account the underlying hardware. This cheat sheet provides some quick tips on how to tune some of the key MySQL variables in order to improve performance.

MySQL in 2018: What’s in 8.0 and Other Observations

This blog details MySQL’s accomplishments in 2018, including the release of MySQL 8.0 which includes changes to roles and the integration of NoSQL.

Cloud Backup Options for MySQL & MariaDB Databases

Cloud storage is a scalable and reliable way of archiving backups. There are some design considerations when building cloud-enabled backup solutions for MySQL or MariaDB in order to meet security and recovery objectives.

In this blog post, we will discuss encryption, compression, and network traffic throttling. We’ll also see how you can upload your backups to Amazon S3, Google Cloud Storage and Azure Storage.

Database Backups - Comparing MariaDB Mariabackup and Percona Xtrabackup

Percona XtraBackup is one of the most used tools for backing up MySQL and MariaDB databases. Mariabackup is a fork of XtraBackup, extending its functionality to support compression and at-rest encryption. In this blog, we will look at the differences between these two, and also see how we use them.

Asynchronous Replication Between MySQL Galera Clusters - Failover and Failback

Asynchronous replication places no low latency demands on the network, so it is possible to keep Galera Clusters in sync even when they are thousands of miles apart and utilise low-cost connections. We effectively can achieve a global system of loosely-coupled clusters. However, managing the global state translates into managing failover and failback operations at both node and cluster level.

Galera Cluster Recovery 101 - A Deep Dive into Network Partitioning

Galera automatic node provisioning and membership control simplifies database cluster operation and improves the reliability of its replication technology. In this blog post, we are diving into the Galera recovery process in events where network partitioning happens.

How to Recover MySQL Galera Cluster from an Asynchronous Slave?

What do you do if you lose your Galera Cluster? A simple solution is to failover to an asynchronous slave. The slave would immediately serve up-to-date data to applications, with minimal downtime. But then, with the slave being the new source of truth, how do you recover your Galera Cluster?

How to Benchmark Performance of MySQL & MariaDB using SysBench

How can you quickly evaluate performance of a database under intensive load? Welcome to sysbench. This blog gives you a good background of sysbench, and how you can use it to benchmark MySQL and MariaDB.

My MySQL Database is Corrupted... What Do I Do Now?

Performing regular database backups is imperative for any production system. Usually when MySQL data gets corrupted, the recommendation is to restore it from the last backup, switch to DR server or take down the affected node down, if you have a cluster, to serve data immediately from other nodes. In some cases you can't - if the backup is not there, the cluster was never set up, your replication is down for a very long time, or the DR procedure was never tested.

MySQL Troubleshooting with pt-stalk: Part 2

This post discusses the data collected by pt-stalk, and how to utilize it when troubleshooting problems with MySQL.