Web Server - Load Balancing and High Availability

Laboratory - Installation: Impossible?

Written by Mario Alberto Medina Nussbaum Monday, 09 May 2011 18:04

"I want to work 100% of the time." This is a phrase that perhaps you have heard from your boss. Ask guaranteed 100% uptime is impossible, as impossible as asking someone does not die or run out corruption. But you can achieve something very close, a reliability of 99.999% of the time, this failure is 1 minute unscheduled year. This is called High Availability (HA). High availability is at all levels, from two server with dual power supply, dual hard drive, dual network card application capable of running on multiple servers at the same time with redundant databases, application servers, redundant system file also redundant to redundant links, geographically distributed Internet providers, etc..

Support or not support

Editor notes - Notas del Editor

Written by Mario Alberto Medina Nussbaum Saturday, 07 May 2011 12:35

In my working life I have heard many times that the company prefers to purchase expensive services that are supported. Being a fan of Open Source and Free Software, I know that there are also free and paid support for GNU / Linux, yet also disagree in part when a company prefers a certain distribution over another that is supported.

The support, from my point of view, is subjective. For example, for those Windows users who have requested support, will tell their stories with something like what happened to me when I tried the Microsoft support. Simply your step 1 is "I reboot?", Step two is "I reinstall it?". This is a very broad strokes, but that's the great support you get for that system if you're using the desktop version.

If you're using the server version will serve a little better, sometimes they even send people to review, but with extra cost. And finally take a long time to solve the problem, unless you solve it by using the support of the community. This is more or less the same as RedHat systems, where the support is just as subjective.

The secret is education

News - Linux

Written by Mario Alberto Medina Nussbaum Friday, 31 December 2010 10:43

Although some manufacturers like MSI a few months ago claimed that the rate of return of netbooks with Linux pre-installed was much greater than that of models with Windows XP, Dell has indicated that its netbooks with Linux succeed on the market. In fact according to the statements of its leaders, a third of the sales of its Dell Inspiron Mini 9 are the models with Linux preinstalled, the highest rate for all Linux computers that Dell sells for quite some time, and higher than other manufacturers. And spoke with this very question a few months ago, and now Dell wants to confirm the good behavior. The success of netbooks from Dell with Linux preinstalled seems obvious if we ignore the statements of Jay Pinkert, a Dell executive has indicated that. A third of our supply of the Mini 9 ships with Linux, which is clearly above the standard success rate of other systems that offer Linux.

"We've done a good job explaining to people what is Linux"

Indeed, this may be the secret to success in the case of Dell, whose rates of return of netbooks with Linux are very low, similar to Windows XP. MSI managers have long claimed that if the rate was higher for Linux netbooks, but it is also true that this was due to misinformation of the people, who was with teams that operated in a manner not expected. User education is key to successful selling netbooks, and other equipment-with Linux, and precisely this market is what is allowing this alternative to Windows win some more traction.

Linux and the iPod touch 4G

Laboratory - Installation: Impossible?

Written by Mario Alberto Medina Nussbaum Friday, 10 December 2010 17:46

I've been quite busy these days .... eh ... weeks ... well, months. Between work and a new hobby I have been a long time, but since one of these hobbies a gift bore fruit again, take the opportunity to write about it.

The gift: a 4G iPod Touch with IOS 4.1.

The problem: no sync with Linux ... well, not input.

After some time of struggling and having to launch iTunes on a virtualized, was the straw that broke the camel: a video cable that I sold as compatible and that was that it was not compatible, at least not by software. That encouraged me to do the jailbreak process, which is now legal, and well, encouraged by the success of being able to use my new cable to see the movies I've rented (paid of course, to say nothing about those anti-piracy agencies) I decided to take a look back to sync with Linux.

Personally I use Banshee, but you can use Rhythmbox or gtkpod, Amarok or any other to manage your music. Actually Layer 7 software is not the most important, but another, called usbmuxd. This makes the magic, and does everything it updated.

Penguins in Wall Street

Reviewing - Aplicaciones y Páginas

Written by Mario Alberto Medina Nussbaum Tuesday, 12 October 2010 21:03

Not all fun in the life of a Linux user. We must also make money, because if not where do they come the gadgets, food and outings with the family? And that is why one should work, but we all like to get to a point of financial stability where we can work on what we like not leaving us more money.

A good way is to invest the money we work wisely, and an interesting and fun method is to invest in the stock market. But how to analyze companies that we believe? Well, apart from fundamental analysis, we also need to make the coach, who has the beauty that can be programmed.

If you think that you will need to spend large sums of money and use Windows applications, think again. There is a tool, QtStalker, which lets you do the technical analysis of how pleasant and intuitive, and even backtesting and monitoring many actions to find patterns that you already identified and scheduled.

Linux exposure = smarter kids

Documentals - Sociedad Linux

Written by Mario Alberto Medina Nussbaum Sunday, 16 January 2011 16:55

Reading on the Internet I found an article that all parents and especially public education authorities should read. Some think that a child is too young to understand something about science or technology, however is to expose children at an early age when technology often results in more intelligent young people, with more desire to learn and to pursue a career to areas of science and technology.

In Mexico, where over 70% of people in higher education are in the branches of administration, accounting, law, business administration and medicine, and few people in science, where there really is more development, we should expose all of our children to a technology environment to encourage them to want to learn more rather than concentrate solely on watching TV and watch football (some kids do not even play, just see it, and know the whole story and the names of all players but do not know multiply)

The article is this:

Please donate!

Viviendo Linux - Páginas del sitio

Written by Mario Alberto Medina Nussbaum Monday, 17 January 2011 22:35