In 8.0, we introduced window functions in the MySQL server. A detailed explanation of how window functions can be used and what is supported in 8.0 is explained here.
Now, let’s see what is new in window functions in the latest version 8.0.…
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Yesterday my Percona colleague Ceri Williams found a nasty bug
in MySQL 8.0.
Its twin for Percona Server reported at PS-5431.
He was installing MySQL Server 8.0 having not supported option in
his configuration file. Thus initialization failed, but,
surprisingly, the subsequent restart was successful and he was
able to create, modify and delete tables in his MySQL
installation. In other words: he got full access to the database.
But he did not create any user account yet!
This new instance of MySQL Server did not have privilege tables,
particularly …
In this tutorial, we will show you how to install and improve the security of MySQL on Ubuntu 18.04. MySQL ...
The post How to Install MySQL on Ubuntu 18.04 appeared first on RoseHosting.
Percona Monitoring and Management (PMM) is a free and open-source platform for managing and monitoring MySQL®, MongoDB®, and PostgreSQL performance. You can run PMM in your own environment for maximum security and reliability. It provides thorough time-based analysis for MySQL®, MongoDB®, and PostgreSQL® servers to ensure that your data works as efficiently as possible.
In this release, we are introducing support for detection of our upcoming PMM 2.0 release in order to avoid potential version conflicts in the future, as PMM 1.x will not be compatible with PMM 2.x.
Another improvement in this release is we have updated the Tooltips for Dashboard MySQL Query Response Time by providing a description of what the graphs display, along with links to related documentation resources. An example of Tooltips in action:
…[Read more]ProxySQL in its versions up to 1.x did not natively support Percona XtraDB Cluster (PXC). Instead, it relied on the flexibility offered by the scheduler. This approach allowed users to implement their own preferred way to manage the ProxySQL behaviour in relation to the Galera events.
From version 2.0 we can use native ProxySQL support for PXC.. The mechanism to activate native support is very similar to the one already in place for group replication.
In brief it is based on the table
[runtime_]mysql_galera_hostgroups and the
information needed is mostly the same:
ProxySQL in its versions up to 1.x did not natively support
Percona XtraDB Cluster (PXC). Instead, it
relied on the flexibility offered by the scheduler. This approach
allowed users to implement their own preferred way to manage the
ProxySQL behaviour in relation to the Galera events. From version
2.0 we can use native ProxySQL support for PXC.. The mechanism to
activate native support is very similar to the one already in
place for group replication. In brief it is based on the table
[runtime_]mysql_galera_hostgroups and the
information needed is mostly the same:
I just encountered the problem described in the title, on a server I don’t have enough free space for create a backup as long the replica is catching up, because the relay logs eats all the available free space as the IO thread works faster than the SQL thread in the replication. What to do? […]
Network is a major part of a database infrastructure. However, often performance benchmarks are done on a local machine, where a client and a server are collocated – I am guilty myself. This is done to simplify the setup and to exclude one more variable (the networking part), but with this we also miss looking at how network affects performance.
The network is even more important for clustering products like Percona XtraDB Cluster and MySQL Group Replication. Also, we are working on our Percona XtraDB Cluster Operator for Kubernetes and OpenShift, where network performance is critical for overall …
[Read more]Percona is glad to announce the release of Percona Server 5.7.25-28 on February 18, 2019. Downloads are available here and from the Percona Software Repositories.
This release is based on MySQL 5.7.25 and includes all the bug fixes in it. Percona Server 5.7.25-28 is now the current GA (Generally Available) release in the 5.7 series.
All software developed by Percona is open-source and free.
In this release, Percona Server introduces the …
[Read more]Ahead of the PCI move to deprecate the use of ‘early TLS’, we’ve previously taken steps to disable TLSv1.0.
Unfortunately at that time we encountered some issues which led us to rollback these changes. This was to allow users of operating systems that did not – yet – support TLSv1.1 or higher to download Percona packages over TLSv1.0.
Since then, we have been tracking our usage statistics for older operating systems that don’t support TLSv1.1 or higher at https://repo.percona.com. We now receive very few legitimate requests for these downloads.
Consequently, we are ending support for TLSv1.0 on all Percona web properties.
…[Read more]
