The MariaDB project is pleased to announce the immediate availability of MariaDB 5.5.59. This is a stable (GA) release. See the release notes and changelog for details. Download MariaDB 5.5.59 Release Notes Changelog What is MariaDB 5.5? MariaDB APT and YUM Repository Configuration Generator Thanks, and enjoy MariaDB!
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MariaDB Server 5.5.59 now available dbart Fri, 01/19/2018 - 11:07[Read more]
FromDual offers short term a Percona XtraDB Cluster and MySQL Galera Cluster training (2 days) in English.
The training will take place in the Linuxhotel in Essen/Germany on February 7/8 2018.
There are already enough registrations so it is certain the training will take place. But there are still free places for some additional participants.
You can book online at the Linuxhotel.
Important: The Linuxhotel is nearly fully booked out. So accommodation is in nearby locations. The Linuxhotel will recommend you some locations.
The training is in English.
You can find the contents of this 2-day Percona XtraDB Cluster training …[Read more]
ProxySQL and pt-heartbeat
The Percona toolkit provides a very useful script for more
accurate replication lag monitoring called pt-heartbeat. The
pt-heartbeat script provides replication lag metrics based on
actual data that has been replicated and is more accurate than
Seconds_Behind_Master metrics gathered from the
SHOW SLAVE STATUS.
Seconds_Behind_Master relies purely on system time
(i.e. current time - time the event executed on the master
server). By default ProxySQL relies on the output of the
SHOW SLAVE STATUS command in order to identify
replicas that should be excluded from the backend connection pool
max_replication_lag has been configured for a
server in the
Starting from ProxySQL version 1.4.4 a new feature has been introduced in order to leverage the data provided by pt-heartbeat and …[Read more]
Percona announces the release of Percona Monitoring and Management (PMM) 1.6.0. In this release, Percona Monitoring and Management Grafana metrics are available in the Advanced Data Exploration dashboard. We’ve improved the integration with MyRocks, and its data is now collected from SHOW GLOBAL STATUS.
The MongoDB Exporter now features two new metrics: mongodb_up to inform if the MongoDB Server is running and mongodb_scrape_errors_total reporting the total number of errors when scaping MongoDB.
In this release, we’ve greatly improved the performance of the mongodb:metrics monitoring service.
Percona Monitoring and Management (PMM) 1.6.0 also …[Read more]
Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.
There is still much going on when it comes to Meltdown/Spectre in our world. Percona’s Vadim Tkachenko and Alexey Stroganov recently published Does the Meltdown Fix Affect Performance for MySQL on Bare Metal?. You also want to read Mark Callaghan’s excellent work on this: Meltdown vs MySQL part 1: in-memory sysbench and a core i3 NUC, XFS, nobarrier and the 4.13 Linux kernel, …[Read more]
In this blog post, we’ll look at does the Meltdown fix affect performance for MySQL on bare metal servers.
Since the news about the Meltdown bug, there were a lot of reports on the performance hit from proposed fixes. We have looked at how the fix affects MySQL (Percona Server for MySQL) under a sysbench workload.
In this case, we used bare metal boxes with the following specifications:
- Two-socket Intel(R) Xeon(R) CPU E5-2683 v3 @ 2.00GHz (in total 56 entries in /proc/cpuinfo)
- Ubuntu 16.04
- Memory: 256GB
- Storage: Samsung SM863 1.9TB SATA SSD
- Percona Server for MySQL 5.7.20
- Kernel (vulnerable) 4.13.0-21
- Kernel (with Meltdown fix) 4.13.0-25
Please note, the current kernel for Ubuntu 16.04 contains only a Meltdown fix, …[Read more]
The MariaDB project is pleased to announce the availability of MariaDB 10.3.4, the second beta release in the MariaDB 10.3 series, as well as MariaDB Connector/C 3.0.3, the latest stable release in the MariaDB Connector/J 3.0 series, and MariaDB Connector/C 2.3.5, the latest stable release in the MariaDB Connector/C 2.3 series. See the release notes […]
The post MariaDB 10.3.4 and MariaDB Connector/C 3.0.3 and 2.3.5 now available appeared first on MariaDB.org.
I’m going to narrate you a story that happened around a crashing MyQL, Corrupted InnoDB table and finally the recovery by table restore. We will see how our database administrator detected the issue and what he did to resolve it. A day in MySQL Database Consultant’s day was taking its shape while a friend called […]
Database security is an essential part of any system. With more and more news reports of widespread data breaches coming in from around the world, there is no better time to check your environments and make sure you have implemented these basic steps to remain secure.
ClusterControl for Database Security
ClusterControl provides advanced deployment, monitoring and management features to ensure your databases and their …[Read more]
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