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pre-FOSDEM MySQL Day 2019

For the third year in a row, we will take advantage of the mass presence of our MySQL Engineers during FOSDEM to organize the pre-FOSDEM MySQL Day. The program of this 3rd edition is already on track, thank you to all the speakers who already confirmed their participation. Start End Event Speaker Company Topic Friday 1st February 09:30 10:00 MySQL … Read More

MySQL InnoDB Cluster with 2 Data Centers for Disaster Recovery: howto – part 2

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

MySQL InnoDB Cluster with 2 Data Centers for Disaster Recovery: howto

As you know, MySQL InnoDB Cluster is a High Availability solution for MySQL. However more and more people are trying to use it as a Disaster Recovery solution with 2 data centers. Natively, this is not yet supported. But it’s already possible to realize such setup if we agree with the following points:  a human interaction is required in case … Read More

MySQL Memory Consumption and Open Prepare Statements

Today I read the nice post of Bhuvanesh on the memory leak issue they experienced with MySQL. In fact when you read the post, you realize that MySQL was just following the parameters that were setup (the default of max_prepare_stmt_count is 16382 even on 5.6). I’m still convinced that the problem should be resolved in the application even if the … Read More

MySQL: when will the password of my users expire ?

Has you may already know, in MySQL it is possible to set an expiration period for passwords. It’s not always obvious to see when the password will expire. And most of the time if you don’t pay much attention you will get something like this: ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this … Read More


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