Codership is pleased to announce a new Generally Available (GA) release of the multi-master Galera Cluster for MySQL 5.7, consisting of MySQL-wsrep 5.7.42 (release notes, download) and MySQL-wsrep 8.0.33 (release notes, download), with Galera replication library 4.15 (release notes, download) implementing wsrep API version …
[Read more]We are sure you’ve probably already heard that MySQL 5.7 is going to reach End of Life (EOL) by October 2023. We are here to tell you that the migration from MySQL 5.7 need not be scary — MySQL 8.0 has been Generally Available for five years, and the Galera Cluster product for it, has been hardened for over three years, so it is truly time to get ready to migrate.
In our first session of the series, we are going to cover:
* the new features of Galera Cluster with MySQL 8 that you might
benefit from, including what is available in Galera Cluster
Enterprise Edition (EE)
* how to plan a migration from MySQL 5.7 or older to 8.0
* things to test for, before migrating
* common pitfalls of said migration
* how to ensure your Galera Cluster keeps humming along with no
downtime
We also offer migration support to help you before and during your migration, after-which our regular support plan will cover …
[Read more]An inordinate amount of our Galera Cluster customer base is still using the MySQL 5.7 variant of Galera Cluster. Besides not being able to have access to all the new features of the Galera 4 library, MySQL 5.7 is rapidly reaching End of Life (EOL) status in October 2023. This is less than six months away, and it is also why we would like to focus on getting our users upgraded to MySQL 8.0 with Galera Cluster.
Firstly, MySQL 8 has been Generally Available (GA) since 19 April 2018. That is a whole five years, and you must by now, already know that there is a new release model, where there are new features included in minor releases. The release notes are a must read. Next, Codership released Galera Cluster 4 with MySQL 8 with MySQL 8.0.19, on …
[Read more]MySQL has InnoDB data encryption, and Galera Cluster has supported it since it appeared in the main server. The one thing that was not covered was the encryption of the Galera Cache (the galera.cache file).
Here is a simple extract from the binlog.000001 files.
strings binlog.* |grep Custom |wc -l 10000 strings galera.cache |grep Custom |wc -l 10000
strings galera.cache|tail -10 Customer9100 Customer9099 Customer9098 Customer9097 Customer9096 Customer9095 Customer9094 Customer9093 Customer9092 Customer9091
You need to edit your /etc/my.cnf to include:
early-plugin-load=keyring_file.so keyring_file_data=/var/lib/mysql-keyring/keyring
Note that in this example we are using the keyring_file plugin, which stores keyring data in a file on the local server host. This is not intended for regulatory compliance. You need to use a key management server that protects encryption keys in key vaults or hardware …
[Read more]A common question we get is: can I add a node to my Galera Cluster without restarting the entire cluster? The simple answer is YES.
A lot worry about the fact that you do list servers that are part of the cluster within your my.cnf, and this file is not reloadable in a dynamic fashion. Fret not, though, because as long as your my.cnf has one active cluster member (the DONOR), you can have it be the JOINER.
If for example, you have 3 nodes: galera1: 159.223.105.21 galera2: 137.184.78.182 galera3: 137.184.65.171
The my.cnf line for wsrep_address should read as follows:
wsrep_cluster_address="gcomm://159.223.105.21,137.184.78.182,137.184.65.171"
It is then trivial for you to have your fourth server (say, galera4: 161.35.120.111), have a my.cnf that reads as follows:
wsrep_cluster_address="gcomm://159.223.105.21,137.184.78.182,137.184.65.171,161.35.120.111"
Now, …
[Read more]Codership is pleased to announce a new Generally Available (GA) release of the multi-master Galera Cluster for MySQL 5.7, consisting of MySQL-wsrep 5.7.41 (release notes, download) and MySQL-wsrep 8.0.32 (release notes, download). This release incorporates all changes to MySQL 5.7.41 and MySQL 8.0.32 respectively, adding a …
[Read more]Codership is pleased to announce a new Generally Available (GA) release of the multi-master Galera Cluster for MySQL 5.7, consisting of MySQL-wsrep 5.7.40 (release notes, download) and MySQL-wsrep 8.0.31 (release notes, download) with Galera replication library 4.14 (release notes, download) implementing wsrep API version 26. …
[Read more]Mobile World Congress (MWC), the world’s leading event is all set to unite the global mobile and telecoms industry in Barcelona, Spain from 27 February – 2 March 2023. In this framework, Codership is glad to announce that it has been selected by the European Innovation Council to join the EIC Pavilion. The 20 most promising EIC-funded SMEs, startups and scale ups have an unprecedented opportunity to impress the international audience with their game-changing innovations and establish business partnerships with like-minded counterparts.
The EIC Pavilion will feature a wide variety of extraordinary innovations in crucial sectors, such as Artificial Intelligence, Robotics, Machine Learning and IoT, among others. From interactive sessions and expert panel …
[Read more]We recently covered Upgrading your Galera Cluster from MySQL 5.7 to MySQL 8.0. We’ve also had questions on how the upgrade path from our usual Galera Cluster “community” edition to the Galera Cluster Enterprise Edition (EE), which includes many new features, like XA transaction support, arm64 support or GCache encryption.
First off, let’s start by installing a Galera Cluster on CentOS 7. The reason we have picked this distribution? Let’s edit the /etc/yum.repos.d/galera.repo and add:
[galera4]
name = Galera
baseurl = https://releases.galeracluster.com/galera-4/centos/7/x86_64
gpgkey = https://releases.galeracluster.com/GPG-KEY-galeracluster.com
gpgcheck = 1
[mysql-wsrep8]
name = MySQL-wsrep
baseurl = https://releases.galeracluster.com/mysql-wsrep-8.0/centos/7/x86_64
gpgkey = …
[Read more]
Codership is pleased to announce a new Generally Available (GA) release of the multi-master Galera Cluster for MySQL 8.0, consisting of MySQL-wsrep 8.0.30 (release notes, download) with Galera replication library 4.13 (release notes, download) implementing wsrep API version 26. This release incorporates all changes to MySQL 8.0.30, adding a synchronous option for your MySQL High Availability solutions.
For the Galera replication library 4.13, we now complete the I/O for the client handshake before starting an asynchronous read to fix …
[Read more]