I think MariaDB has had a great few weeks recently and the timeline of these events are important.
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I think MariaDB has had a great few weeks recently and the timeline of these events are important.
RedeHost are one of Brazil's largest cloud computing and web hosting providers, with more than 60,000 customers and 52,000 web sites running on its infrastructure.
As the company grew, Redehost needed to automate operations, such as system monitoring, making the operations team more proactive in solving problems. Redehost also sought to improve server uptime, robustness, and availability, especially during backup windows, when performance would often dip.
To address the needs of the business, Redehost migrated from the community edition of MySQL to MySQL Enterprise Edition (http://www.mysql.com/products/enterprise/), which has delivered a host of benefits:
- Pro-active database management and monitoring using MySQL Enterprise Monitor (http://www.mysql.com/products/enterprise/monitor.html),
[Read more...]If you're using MySQL replication, then you're probably counting on it for some fairly important need. Monitoring via something like Nagios is generally considered a best practice. This article assumes you've already got your Nagios server setup and your intention is to add a Ubuntu 10.04 NRPE client. This article also assumes the Ubuntu 10.04 NRPE client is your MySQL replication master, not the slave. The OS of the slave does not matter.
At first it wasn't clear what packages would be appropriate packages to install. I was initially misled by the naming of the nrpe package, but I found the correct packages to be:
sudo apt-get install nagios-nrpe-server nagios-plugins
The NRPE configuration is stored in /etc/nagios/nrpe.cfg, while the plugins are installed in
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My previous post focused on some of the problems of doing multi-tenant MySQL.
One of the reasons why I started hacking on Drizzle was that the multi-tenancy options for MySQL just weren’t very good (this is also the reason why I run my blog in a VM and not a shared hosting solution).
What you really want is to be able to give your users access to a virtual database server. What you don’t want is to be administering a separate database server for each of your users. What you want are CATALOGs.
A CATALOG is a collection of SCHEMAs (which have TABLEs in them). Each CATALOG is isolated from all the others. Once you connect to a catalog, that’s it. They are entirely separate units. There are no cross-catalog queries or CHANGE CATALOG commands. It is as
[Read more...]2010 was a great year for me, I started a new company, and it’s been profitable since month 2, I closed my consulting company, and most importantly, I lost 30 pounds, and am more mobile/agile than I was in college. I’m 32 and I feel better than I did when I was 24. I’ve talked [...]
View [Read more...]If you have a wedding photography website, more than likely you want to showcase your work, or the work of your colleagues. You want to do this, without putting up low quality pictures, nor do you want to make your visitors wait 20 seconds before the page loads. Here are two plugins I use for my clients to help with this.
Building and installing the Ruby mysql gem on freshly-installed Red Hat based systems sometimes produces the frustratingly ambiguous error below:
# gem install mysql /usr/bin/ruby extconf.rb checking for mysql_ssl_set()... no checking for rb_str_set_len()... no checking for rb_thread_start_timer()... no checking for mysql.h... no checking for mysql/mysql.h... no *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options.
Searching the web for info on this error yields two basic solutions:
So you're a small startup company, ready to go live with your product, which you intend to distribute under an Open Source License. Congratulations, you made a wise decision! Your developers have been hacking away frantically, getting the code in good shape for the initial launch. Now it's time to look into what else needs to be built and setup, so you're ready to welcome the first members of your new community and to ensure they are coming back!
Keep the following saying in mind, which especially holds true in the Open Source world: "You never get a second chance to make a first impression!". While the most important thing is of course to have a compelling and useful product, this blog post is an attempt to highlight some other aspects about community building and providing
[Read more...]Of course it’s not quite that simple. I’ve just decomissioned an old Red Hat 7.1 box (hosted dedicated server) that had been in service since 2002, so about 7 years. Specs? Celeron 1.3GHz, 512M, 60GB HD. Not too bad in the RAM and disk realm. It did a good job but goodness am I glad to be rid of it!
Not having that box online is safer for the planet, although it (perhaps amazingly considering the age of some of the externally facing software components) has never been compromised – I consider that mostly luck, by the way, I’m not naive about that. But it’s not easy to move off old servers, it’s generally (and also has been in this case) a lot of work.
Of course hosting has moved on since 2002, places like Linode offer more for less money/month. Of course they virtualise (Xen based in this case) and
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EC2 is nifty, but it doesn’t appear suitable for all needs, and that’s what this post is about.
For instance, a machine can just “disappear”. You can set things up to automatically start a new instance to replace it, but if you just committed a transaction it’s likely to be lost: MySQL replication is asynchronous, EBS which is slower if you commit your transactions on it, or EBS snapshots which are only periodic (you’d have to add foo on the application end). This adds complexity, and thus the question arises whether EC2 is the best solution for systems where this is a concern.
When pondering this, there are two important factors to consider: a database server needs cores, RAM and reasonably low-latency disk access, and application servers should be near their database server. This means you shouldn’t split app and db servers to
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Thanks to Expandrive . You can now use Subversion (SVN) on websites hosted at Mosso . The idea of mounting a directory you’d normally ftp/sftp to, and then using SVN on it, at first seemed oddly implausible to me. But, I tried it recently, and got exactly the results I wanted. I even had the repository hosted at Unfuddle . I think this post is fairly obvious, but if you have any questions feel free to ask in the comments.
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Sorry for the downtime of this site - until around a week ago I hosted my home page on a trusty Genesi Pegasos II system (powered by a PowerPC G4 Processor clocked at 1GHz, using Debian 4.0 PPC with 512 MB of RAM), serving these pages from my home DSL connection. Unfortunately this system provided no means of redundancy - the hard disk drive died.
Luckily I perform frequent backups, so I moved most parts of the site to a shared hosting space now - the picture gallery is unfortunately too big to fit into the space that I have there. I'll try to move the pictures into my Flickr account instead, but this will take some time.
Note that the primary domain name of this site is now lenzg.net - lenzg.org, (the domain
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While Colin beat me in blogging about Project Kenai, I think I can still provide some additional background information about this new project hosting service from Sun.
If you are a maintainer of an Open Source project, you currently have plenty of choice when it comes to getting your project hosted for free. One criterion could be your software configuration management system (SCM) of choice.
Some of the hosting services that I am currently aware of and the choice of SCM they offer include:
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Sun is a huge company. So it comes as no surprise that I’m finding out about Project Kenai via Tim Bray, instead of some internal mailing list (believe me, there must be thousands).
Tim’s got a Q&A with Nick Sieger, who’s one of the chieftains behind Kenai. I find it amusing that the comparison is made against Google Code and GitHub - has SourceForge hit irrelevancy? I’m surprised Launchpad isn’t mentioned.
The vast majority of Tomcat applications ran fin on GlassFish. Jan tell us that now even the ones using the Tomcat-style valves will run unmodified.
Of at The ServerSide Pawan explains How to use OpenMQ with Mule ESB by configuring the Mule JMS connector. Added (by pelegri) - I've heard of a number of requests for this, please let us know if you use the combination so we can track OpenMQ
[Read more...]Did you notice that I moved this blog from pair Networks to pairLite hosting?
Probably not, unless you check the DNS of xaprb.com regularly!
Don’t you hate it when people say “I’m moving my blog, I hope there won’t be more than a few days of downtime, blah blah…” Why is this ever necessary, I wonder? I wonder the same thing about a lot of hosting providers — recently I had a client in my consulting practice whose (very large, well-known) hosting provider tried to help them with some very simple MySQL work and ended up causing them an obscene amount of downtime, like many many days, and there was no end in sight. As I spoke on the phone with him and asked him about his
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