Archive for March, 2011

Install or upgrade Nagios to version 3.2.2

Nagios Core have been updated to 3.2.2
The update/installation process is not different as the one described in the main article Read the rest of this entry »

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Backup Gmail on Linux

In this tutorial I am going to discuss how to backup your Gmail emails to your own computer. Now personally I trust Google and keep allot of data on their services, but when it comes to emails I like to be doubly sure. It’s extremely rare but on occasion even Gmail has some problems, for example read this news article about some data loss at Gmail. When I read this I thought, “dam what would I do if I lost my emails“, well that scared the hell out of me, I’m always going back though old emails to find information (password, email addr’s, phone numbers, etc..) and this important information is only stored in my emails. So following the rule that “data only exists if its stored in three places” I thought I would add my own step to Google’s backup solution, just to be safe, and this is how I did it. Read the rest of this entry »

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Top 5 easy Nagios setup solutions

nagios LogoNagios is the Industry Standard Network Monitoring Engine, however it can be a pain to set up and configure. We’ll it doesn’t always need to be that way there are a few other systems you could use that are much easier to setup and configure so much so you might even be able to get your end-users to manage their own monitoring configuration. So here is my Top 5 easy Nagios setup solutions Read the rest of this entry »

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Ubuntu Rsync Tutorial (ubuntu)

Rsync is a great lightweight backup utility for Linux and windows, its selling point over other backup solutions is that it only copies the diffs of the files that have changed, therefore only transmitting the bare minimum of data. This makes it great for running backups into the cloud & to over internet services.

Rsync has two modes, daemon & client. The Rsync server runs in daemon mode, this listens for requests on port 873 and can serve these requests in Rsync’s own protocol or via remote shell (RSH or SSH), thus making it a very secure way to backup your files. The Rsync client is pretty simple and normally runs as a simple executable. What makes Rsync more remarkable is its huge array of features, to name a few: Read the rest of this entry »

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Amazon Upgrade Scalability

Yesterday Amazon Web Services upgraded its EC2 Management Console to make it even easier to scale your applications, as Amazon puts it: “You can now change the instance type of a stopped, EBS-backed EC2 instance. This means that you can scale up or scale down as your needs change,”. Read the rest of this entry »

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Live Apache Logs

Have you ever wondered who is looking at my website right now or How many people are looking at my website or even what pages are people looking at on my site right now. Well Google Analytics can help answer these questions, it will tell you how many people have been to your site and where in the world they came from, however this information is usually delayed by 24, it will not give up live or real-time statistics.

However there is two ways to see who is using your site in real-time, by either in the apache logs or seeing what TCP connections are in use on your network interface, in this tutorial we will discuss both: Read the rest of this entry »

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What Why and How RAM DISK

A RAM disk or RAM drive is a block of system memory that the operating system is treating as if it were a hard drive. It is sometimes called a “virtual RAM drive” or “software RAM drive” to distinguish it from a “hardware RAM drive” witch uses separate hardware containing RAM, i.e. solid-state drives.

There are several benefits to using RAM Disks over normal Hard Drives, the first being the performance increases that RAM Disks have. Hard Drives are probably the slowest memory we use in our computers, however the memory is some of the fastest memory we have, therefore ram disks are considerably faster than normal Hard Drives. The other major benefit is security, Read the rest of this entry »

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MySQL Backup (mysqldump)

There are plenty of ways of backing up MySQL, however my personal preference is to use MySQL dump, here’s how you do it: Read the rest of this entry »

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