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Displaying posts with tag: 8.0 (reset)
Using OCI to install WordPress and MySQL 8.0

Today we will see how to install WordPress in Oracle Cloud (OCI).

We will use Oracle Cloud’s Free Trier and deploy 2 compute instances:

  • the webserver (apache, PHP and WordPress)
  • the database server (MySQL 8.0)

We will use one public IP to reach our site and our two servers will communicate using their own private network:

Deploying 2 compute instances

Let’s start by creating 2 compute instances:

We will use the Oracle Linux 7.7 on Micro Instances:

As I am in Belgium, I use the Frankfurt datacenter.

When our instances are deployed, we can find the public IP of one of them. This is the one we will use as webserver (you can free the public IP on the other one, the MySQL one):

At the creation, we entered a ssh key to access …

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Fun with Bugs #95 - On MySQL Bug Reports I am Subscribed to, Part XXIX

With conferences cancelled or postponed and people forced to stay at home due to COVID-19 wide spreading, what can be better than to give my readers a new list of MySQL bugs to check? Useful reading should help! So today I continue my previous post with a quick review of bugs I've subscribed to in February, 2020, while things were still going as usual for most of us...

Here is the list of InnoDB, replication, optimizer and some other bugs to note while working with recent MySQL 5.7.x and 8.0.19 releases:

  • Bug #98473 - "group replication will be block after lock table". This problem report by
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MySQL 8.0.19: Thanks for the Contributions

Of course MySQL 8.0.19 that was released on 13th January 2020 also includes Community Contributions. But before talking about them, I would like to thanks Jesper for having started this MySQL Releases Contributions thread. I’ll try to keep his good work on that topic from now.

So, MySQL 8.0.19 includes contributions from Facebook, Satya Bodapati, Nikolai Kostrigin and Olekasandr Peresypkin.

Please note that this list might not be exhaustive as it’s currently a manual process for me to link the contributions with the current release. I will try to improve this in the future.

Here are those contributions:

  • Innodb_system_rows_read, Innodb_system_rows_inserted, …
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Deploy MySQL InnoDB Cluster in OCI with Terraform

As you know, Oracle Cloud Infrastructure (aka OCI) becomes more and more popular. You can find OCI data centers almost everywhere and the price is very attractive.

Something very interesting is the possibility to have different availability domains but also different fault-domains in the same availability one !

Oracle provides a lot of modules to deploy your architecture on OCI using Terraform. Those are called oracle-quickstart repos. You can find them on Github.

There is an official Reference Architecture for MySQL InnoDB Cluster in OCI that I encourage you to read before deploying your MySQL HA solution …

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Fun with Bugs #94 - On MySQL Bug Reports I am Subscribed to, Part XXVIII

I may get a chance to speak about proper bugs processing for open source projects later this year, so I have to keep reviewing recent MySQL bugs to be ready for that. In my previous post in this series I listed some interesting MySQL bug reports created in December, 2019. Time to move on to January, 2020! Belated Happy New Year of cool MySQL Bugs!

As usual I mostly care about InnoDB, replication and optimizer bugs and explicitly mention bug reporter by name and give link to his other active reports (if any). I also pick up examples of proper (or improper) reporter and Oracle engineers attitudes. Here is the list:

  • Bug #98103 - "unexpected behavior while logging an aborted query in the slow query log".  …
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preFOSDEM MySQL Days: summary and slides

What a great event ! I got very positive feedback for this extended preFOSDEM MySQL Day 2020.

Before my summary, I wanted to thank again all speakers and attendees. Without you this event won’t even exist. And thank you to ICAB for hosting us yet another time !

As you may know, we had 2 parallel tracks for 2 consecutive days. We had very valuable technical content from the MySQL developers and also from the external community members who talked about their favorite database.

There was a large interest in MySQL NDB Cluster and it was obvious that the nice presentations we had, encouraged people to try the worlds highest performance open source in-memory database (and they can even test it on their laptop with DBDeployer). The NDB users were also happy with the new stuff and impressive numbers that Bernd

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MySQL 8.0 Certification is available !

The MySQL 8.0 DBA Certification is now available. 85 questions to get the first MySQL 8.0 certification ! You can find details on the Oracle Exam 1Z0-908 page.

This exams covers mostly all relevant topics for all MySQL 8.0 Administrator and you can register for it on Pearsonvue’s website.

Good luck if you are taking the exam !

Artwork credits: student by Wilson Joseph and Certificate by Berkah Icon from the Noun Project

Fun with Bugs #92 - On MySQL Bug Reports I am Subscribed to, Part XXVI

I'd like to continue reviewing MySQL bug reports from Community users that I considered interesting and subscribed to. Unlike in the previous post in this series, I am not going to check test cases on any competitor product, but will use only recently released MySQL 5.7.29 and 8.0.19 for checks, if any. This time I'll concentrate on bugs reported in November 2019.

As usual, I mostly care about optimizer, InnoDB and replication related bugs. Here is the list:

  • Bug #97476 - "Range optimizer skips rows". This bug reported by
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MySQL 8.0 & PHP on RedHat, CentOS and Fedora

As you could read in this previous post, PHP 7.4 is now completely supporting MySQL 8.0 and the new default authentication plugin.

I wanted to make a summary table providing and overview of all PHP versions and how they supported MySQL 8.0 and the different authentication plugins.

As I am a RPM based distribution user, I’m using the famous repository of remi since a lot of years, and I use it then also to install PHP 7.4.0 and 7.4.1

I created a new user to test to …

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preFOSDEM 2020 MySQL Days: the schedule

The schedule of the preFOSDEM Day is now available !

We had a lot of proposals to deal with. Also this is a MySQL event where we, the MySQL Team has the possibility to show to you, our Community, all what we have working on to improve MySQL but also new stuff. We also invite some of our friends from the MySQL Community to talk about their experience.

I think we did a good selection and propose you new content. We are extremely happy to have Saverio Miroddi from TicketSolve talking about MySQL 8.0, Uber talking about InnoDB Cluster, and Facebook about Binlog.

As you can see, we will have 2 rooms, where one will be dedicated mostly to SQL and Optimizer topics but also tutorials.

You can also see that this year we also want to put some spot lights to MySQL NDB Cluster. You will see what is it, how is it used and what’s new. We will also have 2 community speakers sharing their MySQL NDB knowledge: Giuseppe Maxia, …

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