LVM (Logical Volume Management) is a very important tool to have in the toolkit of a MySQL DBA. It allows you to create and extend logical volumes on the fly. This allows me to, say, add another disk and extend a partition effortlessly. The other very important feature is the ability to take snapshots, that you can then use for backups. All in all its a must have tool. Hence, this guide will allow you to understand various terminologies associated with LVM, together with setting up LVM volumes and in a later part will also show you how to extend...
As announced, I held a short talk on switching from MySQL community edition (especially 5.1) to MariaDB (currently 5.2.6) at this years LinuxTag in Berlin. Here are the (German) slides for reference: (In case you cannot see the embedded presentation, … Weiterlesen →
If you happen to be around at this years LinuxTag 2011 in Berlin/Germany, you are invited to attend my short talk on MariaDB as a drop-in replacement for MySQL. The talk focusses on differences between MySQL Community Edition and MariaDB … Weiterlesen →
Installing Cherokee With PHP5 And MySQL Support On Debian Squeeze
Cherokee is a very fast, flexible and easy to configure Web Server. It supports the widespread technologies nowadays: FastCGI, SCGI, PHP, CGI, TLS and SSL encrypted connections, virtual hosts, authentication, on the fly encoding, load balancing, Apache compatible log files, and much more. This tutorial shows how you can install Cherokee on a Debian Squeeze server with PHP5 support (through FastCGI) and MySQL support.
a plugin interface since 5.1, which enables creation
of server components. Plugins can be loaded at server startup, or
loaded and unloaded at runtime without restarting the server.
Most of these plugins require the full MySQL source tree during
their build, which was not available in Debian as a binary
package until I uploaded 5.1.54-2 to unstable last week. I had
this item on my TODO list since MySQL 5.1 was uploaded to Debian
unstable, because it is not possible for a Debian source package
to build-depend on another source package. Thankfully, Clint
Byrum from Ubuntu
sent me a small patch which added the new binary package.
The first package making use of the new …
5.5 was declared stable in December last year, I regulary receive
e-mails from people asking when it will get uploaded to Debian. The good thing is
that the initial conversion from automake to cmake has already
been done by Clint Byrum from Ubuntu, and we are going to use his work as a
basis for our packages. The not so good thing is bug
#59078, an issue in libmysqlclient which breaks ABI
compatibility. According to Lenz Grimmer from Oracle the MySQL
upstream developers are already looking at it.
I am still not sure if it is a good idea to upload MySQL 5.5 in the current state to experimental, but I am definitely not going to upload it to unstable until this issue is fixed.
Update: I just …
Last week, the Linux-HA project made its Heartbeat 3.0.4 and Cluster Glue 1.0.7
release, and Pacemaker released 1.0.10 a few weeks back.
Thanks to the amazing Simon Horman (
horms to IRC regulars), those releases have been uploaded
to Debian unstable (
sid is the permanent code name of the Debian
unstable distribution. It’s where package maintainers upload
fresh builds and maintain the latest versions of distribution
packages. It’s not meant for general consumption, …
One more DRBD tutorial, this time I will describe howto setup MySQL with DRBD (Distributed Replicated Block Device). Purpose This document describes how to to setup a failover system with MySQL and DRBD (Distributed Replicated Block Device). Introduction In this tutorial we will setup two Debian Linux nodes with a DRBD volume. MySQL will be [...]
There has been a lot happening in the MariaDB community recently, and there has been growth. Here are some of the highlights. Thank you to all our current contributors, and to others that want to contribute, shoot community[at]askmonty[dot]org an e-mail.
MariaDB 5.2.3 binaries for Solaris and Debian Sparc
Our Sparc community contributor, Mark, has continued to make popular binaries for Solaris 10 and Debian Sparc. He’s kept up to speed with MariaDB 5.2.3, so please visit him and download the binaries.
MariaDB 5.2.3 on the openSUSE Build Service
Community contributor Michal Hrušecký has packaged MariaDB for openSUSE and its available via the …[Read more]
Today I will describe the setup of a Hadoop / HDSF multi-node cluster on Debian Lenny with a redundant Namenode using DRBD and Heartbeat, four Datanodes and Tasktracker, a Backup- Checkpointnode and Rack awareness.
Hadoop Cluster Setup on Debian Lenny purposes
This article descibes how to setup a hadoop (version 0.21.0) cluster on debian lenny (version 5.x). I will not describe how to use MapReduce.
Hadoop is a framework for distributed computing written in Java. The project includs the following subprojects:
- HDFS: A distributed file system
- MapReduce: A framework for distributed large data processing
list of references[Read more]