Archive for February, 2008

iPhone IMAP Folder Re-Synchronize

ServerIf you have changed the folder names on your mail server, and they do not correspond to the names appearing on your iPhone you can simply do the following to synchronize them. Enter the email settings menu, select the email account that you have changed the folder names of, and deactivate the account. DO NOT DELETE THE ACCOUNT. Then simply re-activate the account. Your folder names will instantly synchronize when you enter the mail application.

Brown’s Gas Electrode – Series Cell Design

To be technical it doesn’t matter what material your electrodes are made of, just make your electrolyzer common ducted; one gas output hose. The material of the electrodes matters regarding corosion. If you use copper your water will turn green as it oxidizes extremely quickly. The simply solution is to use a corosion resistant material. Just use stainless steel. The higher the nickel content of the stainless steel, the more corosion resistent the electrodes will be. As for using electrodes versus plates, if you want an efficient electrolyzer do not use electrodes. Use plates and connect many cells in series. You want no more than 2.2 Volts per cell. Cell in series experience voltage division, therefore add enough plates to reduce the voltage according to the power supply you are using. Electrode electrolyzers are antequated and inefficient. The series cell design by Yull Brown is the most efficient electrolyzer design period. This is why common ducted oxyhydrogen is called Brown’s Gas nowadays, and not Rhodes Gas. William Rhodes was the first person to patent a common ducted electrolyzer, but he used cylindrical cells, which is relatively innificient. William Rhodes confirmed that Yull Brown’s series cell design is superior. To clarify things, Brown’s Gas is just a name for common ducted oxyhydrogen. Oxyhydrogen is a 2:1 proportion of hydrogen and oxygen. The common ducting just means having one gas output hose. Cheers to simplicity :)

Nagios Virtual Server Monitoring in 15 Minutes – Intro

Nagios allows you to graphically monitor your virtual servers from a single web page. No longer will you have to load each individual website or web service in order to verify consistent operation. Nagios can be downloaded directly from their website at: http://www.nagios.com On the Nagios homepage is a link to a 15 minute tutorial, which is relatively straight forward, and works like a charm. I recommend Ubuntu JeOS for your virtual OS specifically because the kernel works flawlessly with the host operating system.

Windows is a CPU Hog Versus Linux

Seriously I have 4 guest Linux operating system running at the same time, and the host CPU is not nearly as busy as when a single Windows OS is running. Windows literally consumes the same amount of CPU power as maybe 10 Linux operating systems running simultaneously. I use Windows XP in seamless mode to have the benefits of browser compatibility checking, and other Windows only applications; the CPU requirements of Windows is simply tremendous. Although you can significantly reduce your Windows CPU requirements by turning off the page file system. Frankly on a machine with over 2 Gigabytes of ram, the page file system is simply not required.

Ubuntu Sendmail Boot Bug

There are two bugs that I currently aware of regarding the sendmail boot process. The first and simplest deals with your hostname. In Ubuntu, the default configuration of sendmail and apache required a fully qualified domain name. You can adjust your FQDN manually in the /etc/hostname file. The proper format is: name.domain.com Save the file, and you will not get any errors on an apache or sendmail reboot. Also there is sometimes an issue when sendmail tries to reconfigure its cf file during boot. I don’t experience this issues, but its worth mentioning due to its simple workaround. Just delete the two following files, and sendmail will not re-configure on boot (you will have to do it manually if you change its settings): /etc/network/if-down.d/sendmail /etc/network/if-up.d/sendmail

Debian VirtualBox Guest OS Causes High and Constant Host CPU Load

For the longest time I was using Debian for my guest operating system, and was relatively frustrated that the host OS always had a constant CPU load of over 20%. I tried many times to compile a custom kernel to resolve this issue, and in the end I decided to switch to a new OS. At first I though Ubuntu server edition was the way to go, but when I was installing the system there was all these gnome, and other graphical components being installed. What is the purpose of openoffice files in a terminal based OS? Overall Ubuntu JeOS is the way to go! It will only install the base Ubuntu system, comparable to how Debian can be configure during the installation process. The kernel used in JeOS does not cause the host to have a constant CPU load, therefore I am overwhelmingly satisfied with its performance. If you are experiencing high host CPU load with your guest OS, I recommend experimenting with different kernels, and possible switching to a different OS if you cannot resolve the issue. There is no reason your host CPU load should be high when the guest is not processing any data. JeOS is the way to go :)