lefred's blog


There Are 10 Types of People in the World....

Migrate from a single MySQL Instance to MySQL InnoDB Cluster using CLONE plugin

When somebody wants to migrate from a single MySQL instance to a full HA solution using MySQL InnoDB Cluster, the best solution to reduce the downtime is to use asynchronous replication and switch database only once at a certain point in time when everything is ready. This is almost what I explained already in this post. The most difficult part … Read More


MySQL 8.0 and wrong dates

In MySQL 8.0, when using invalid values for date data types, an error is returned. This was not the case in 5.x versions.


MySQL InnoDB Cluster, automatic provisioning, firewall and SELinux

You may have noticed that in many of my demos, I disable firewall and SELinux (I even use –initialize-insecure sometimes 😉 ). This is just to make things easier… But in fact enabling iptables and SELinux are not complicated.


MySQL Router 8.0.17’s REST API & MySQL Shell Extensions

You have seen in this previous post, that since 8.0.17, it’s now possible to query the MySQL Router using its REST API. Additionally, we also saw in this post, that since 8.0.17, we are now able to write extensions to MySQL Shell using the Extension Framework. Let’s combine both and see how we can integrate the MySQL Router’s REST API … Read More


MySQL 8.0.17 and Drupal 8.7

From Drupal’s website, we can see that now the support of MySQL 8 is ready. I just tested it and it works great ! The only restriction is related to PHP and the support for the new authentication method in php-mysqlnd. In this previous post, I was happy because it was included in PHP 7.2.8, but this has been reverted … Read More


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