Recently, PeterZ pointed a huge difference in memory usage of MySQL 8.0 compare to MySQL 5.7. This can be an issue for small instances if the same configuration for buffers like the buffer pool are not changed. As explained in Peter’s article, this can lead to the awakening of the so feared OOM Killer ! MorganT, pointed accurately in his … Read More
Everywhere I go to present MySQL InnoDB Cluster, during the demo of creating a cluster, many people doesn’t understand why when I’ve 2 members, my cluster is not yet tolerant to any failure.
On this article, I will show you how to migrate your wordpress database from the MariaDB on CentOS to the real MySQL. Why migrating to MySQL 8.0 ? MySQL 8.0 brings a lot of new features. These features make MySQL database much more secure (like new authentication, secure password policies and management, …) and fault tolerant (new data dictionary), more … Read More
We are less than 48h before the more and more popular pre-FOSDEM MySQL Day ! Unfortunately one of our speaker won’t be able to deliver his talk. Indeed, Giuseppe had ton cancel is talk on containers (Automating MySQL operations with containers) but he will be present during the day and during the Community Dinner, so if you have questions, I’m … Read More
In the first part of this howto, I illustrated how to setup two MySQL InnoDB Cluster linked by an asynchronous replication. In that solution, I didn’t use any replication filters to ignore the replication of the InnoDB Cluster’s metadata (mysql_innodb_cluster_metadata), but I used the same metadata tables with two different clusters in it. The benefit is that this allows to … Read More