Ahoi,There will be the IT-Tage 2016 conference. Where I'm going to
give two talks. One will be about Docker being more then a
technical revolution. The other one is about Best Practices for
Docker+MySQL/MariaDB \o/
As always: fun first! Erkan
Jun
23
2016
Jun
22
2016
In this blog, I will provide answers to the Q & A for the Troubleshooting configuration issues webinar.
First, I want to thank you for attending the June, 9 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t able to answer during the webinar, with responses:
Q: What are the predefined roles installed per default?
A: MySQL does not support roles by default. But, if you need roles you can either use …
[Read more]
Jun
22
2016
On behalf of the Percona Live Conference Committee, I am excited to announce the sneak peek schedule for the Percona Live Europe Amsterdam 2016 talks!
Percona Live Europe will feature a variety of formal tracks and sessions related to MySQL, MongoDB and ODBMS from members of the open source community. With many slots to fill, there will be no shortage of great content this year. Though we won’t finalize the entire conference schedule until mid-July, this preview list of talks is sure to whet your appetite! So without further ado, here is the SNEAK PEEK SCHEDULE!
- …
Jun
22
2016
Introduction
XA stands for “eXtended Architecture”, and is a standard created by The Open Group for distributed transaction processing. While MySQL 5.0 was the first version to support XA, MySQL 5.7 has removed major limitations, fixed a number of bugs, and increased overall test-case coverage.…
Jun
21
2016
In this post, we’ll discuss Docker automatic MySQL slave propagation for help with scaling.
In my previous posts on the Docker environment, I covered Percona XtraDB Cluster. Percona XtraDB Cluster can automatically scale by conveniently adding new nodes using the highly automated State Snapshot Transfer. State Snapshot Transfer allows a new node to copy data from an existing node (I still want to see how this is possible with MySQL Group Replication).
This is not the case with regular MySQL Replication. With MySQL Replication, the slave setup still requires manual steps (well, unless you’ve already scripted it for your environment). At least these are “simple” steps (ha!). Percona XtraBackup can setup replication with less work (see this link for details: …
[Read more]
Jun
20
2016
This post is a continuance of my Docker series, and examines Running Percona XtraDB Cluster nodes with Linux Network namespaces on the same host.
In this blog I want to look into a lower-level building block: Linux Network Namespace.
The same as with cgroups, Docker uses Linux Network Namespace for resource isolation. I was looking into cgroup a year ago, and now I want to understand more about Network Namespace.
The goal is to both understand a bit more about Docker internals, and to see how we can provide network isolation for different processes within the same host. You might need to isolate process when running several MySQL or MongoDB instances on the same …
[Read more]
Jun
20
2016
Please join Percona, Technical Account Manager, Michael Patrick on Thursday, June 23, 2016 at 10 AM PDT (UTC-7) as he presents “Choosing a MySQL High Availability Solution Today.”
High availability (HA) is one of the solutions to improve performance, avoid data outages, and recover quickly from disasters. An HA environment helps guarantee that your database doesn’t have a single point of failure, accommodates rapid growth and exponentially increasing database size, and enables the applications that power your business.
Michael will discuss various topologies for achieving High Availability with MySQL.
Topics include:
- Percona XtraDB Cluster
- DRBD
- MHA
- MySQL Orchestrator
Each solution has advantages and …
[Read more]
Jun
20
2016
Working with a client last week I noted in my analysis, “The mysql server was restarted on Thursday and so the [updated] my.cnf settings seems current”. This occurred between starting my analysis on Wednesday and delivering my findings on Friday.
# more /var/lib/mysql/ip-104-238-102-213.secureserver.net.err 160609 17:04:43 [Note] /usr/sbin/mysqld: Normal shutdown
The client however stated they did not restart MySQL and would not do that at 5pm which is still a high usage time of the production system. This is unfortunately not an uncommon finding, that a production system had an outage and that the client did not know about it and did not instigate this.
There are several common causes and the “DevOps” mindset for current production systems has made this worse.
- You have managed hosting and they perform software updates with/without your knowledge. I have for example worked with several Rackspace …
Jun
20
2016
Wikipedia is the greatest encyclopedia which has ever existed, because everyone can contribute to the massive knowledge corpus. Analyzing this data with computers is becoming more and more indispensable, as nobody can survey the information by hand anymore. In order to work with the data, we have to import it into MySQL and here is how it works.
Jun
20
2016
Wikipedia is the greatest encyclopedia which has ever existed, because everyone can contribute to the massive knowledge corpus. Analyzing this data with computers is becoming more and more indispensable, as nobody can survey the information by hand anymore. In order to work with the data, we have to import it into MySQL and here is how it works.