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sysbench for MySQL 8.0

Alexey made this amazing tool that the majority of MySQL DBAs are using, but if you use sysbench provided with your GNU/Linux distribution or its repository on packagecloud.io you won’t be able to use it with the new default authentication plugin in MySQL 8.0 (caching_sha2_password). This is because most of the sysbench binaries are compiled with the MySQL 5.7 client … Read More


MySQL: size of your tables – tricks and tips

Many of you already know how to retrieve the size of your dataset, schemas and tables in MySQL. To summarize, below are the different queries you can run: Dataset Size I the past I was using something like this : But now with sys schema being installed by default, I encourage you to use some of the formatting functions provided … Read More


MySQL InnoDB Cluster: upgrade from 8.0.11 to 8.0.12

In April, I already posted an article on how to upgrade safely your MySQL InnoDB Cluster, let’s review this procedure now that MySQL 8.0.12 is out. To upgrade all the members of a MySQL InnoDB Cluster (Group), you need to keep in mind the following points: upgrade all the nodes one by one always end by the Primary Master in … Read More


MySQL InnoDB Cluster 8.0.12 – avoid old reads on partitioned members

We received feedback about how a member should act when leaving the group. And the majority of users wanted that when a node drops out of the group, it should kill all connections and shutdown. I totally agree with that behavior and it’s now the default in MySQL 8.0.12. This new feature is explained in WL#11568. Before this change, the … Read More


MySQL Router HA with Keepalived

After having explained how to achieve HA for MySQL Router for people who doesn’t want to install the MySQL Router on the application servers and after having illustrated how to use Pacemaker, this article explains how to setup HA for MySQL Router using keepalived. Keepalived is very popular, maybe because it’s also very easy to use. We can of course … Read More


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