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Keeping a secret: MySQL router "bootstrapping" without a "root" account
Matthias Jung
Data Management
Even as an experienced consultant, you don't think about many things until you are faced with them. I have put several InnoDB clusters including MySQL router into operation over the past few years. Up to now, this was always an interactive process where it was no problem to simply enter the passwords of privileged users (at the console). It was cle...
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Pleasing DBAs with small things: Validation of MySQL configuration
Matthias Jung
MySQL
Configuration files are a constant source of errors. Especially with older systems (before version 8.0), which did not yet have the possibility to make online persistent changes (e.g. "set global persist…"), there were often minor problems. The parameter was set online (but volatile; i.e. not rebootable) due to a lack of downtime and was written to...
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Let’s plan it – Scheduling in Apache NiFi
Janis Ax
Data Management
One key feature of Apache NiFi is scheduling. NiFi dataflows should cover streaming and batch use cases. But how can we connect both worlds together, and what settings are available? In this blog, we want to check the scheduling possibilities and show how to use them correctly. General scheduling options  The dataflow engineer has in total two...
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A little less please: MySQL „partial revokes“
Matthias Jung
Data Management
Granting permissions on databases can be a tedious job. Especially assigning restrictive permissions à la "you may read all tables except for the information in database XYZ" was laborious. For such a task, the SELECT rights had to be defined for all databases that the user should be able to read. The unwanted database was simply given no rights. O...
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Better be safe than sorry or how to "cluster" clusters. MySQL InnoDB ClusterSets
Matthias Jung
MySQL
We have already reported several times about the MySQL InnoDB Cluster and the associated components such as the MySQL Shell and the MySQL Router (e.g., https://blog.ordix.de/mysql-shell-cluster-your-application-in-40-minutes). With version 8.0.28 there is another innovation in this "triumvirate". The InnoDB ClusterSets. This allows the DBA to comfo...
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MySQL HeatWave - Speed up your OLAP tasks
Raphael Salguero
Oracle
A few months ago, Oracle published the new MySQL HeatWave feature for the Oracle Cloud Infrastructure (OCI), which promised to speed up analysis and transactional queries on your MySQL database without big effort. By using so called "HeatWave-Engines" (or "RAPID-Engines") in addition to the original MySQL instance, customers will be able to us...
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