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Resizing Logical Volume - Updated

A few years back I posted an article on resizing the logical volume of a linux virtual machine. I've since discovered a simpler way. Here are the steps used on a CentOS 7 host with a Fedora 25 guest.

Last Updated ( May 31, 2017 at 12:20 AM )
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Simple Visitor Counter

If you do a quick web search for a php visitor counter, you will find a lot of examples that use flat text files to keep track of the page visits. I prefer to use mysql tables, since the sites I work with are already using a mysql database. Below is a very simple example of how to add a visitor counter to any php website page.

Last Updated ( Jun 07, 2016 at 08:56 AM )
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SPAM Vacation

One of the services I provide my clients is SPAM email filtering.  Typically if the client has an in-house email server I will set up a SpamAssassin box as the first line of defense to incoming emails.  Once the email has made it past the filter, then it's forwarded to the in-house server.  Recently I noticed a sudden unexplained drop in incoming emails to one of my SpamAssassin boxes.  It's like the spammers took a vacation for 5 days in April.  Here is a graph representing the incoming connections to this box.

Last Updated ( Jun 07, 2016 at 09:01 AM )
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How to resize a Logical Volume on a Linux VM

This is a step-by-step guide on how to increase the size of a logical volume on a CentOS 6 virtual machine. I had created this particular virtual machine to do some Ruby on Rails application development work and quickly realized I didn't make the drive large enough to hold my project. So, these notes are mainly here to help me remember the steps, hopefully they can be useful to someone else too.

Last Updated ( May 31, 2017 at 12:25 AM )
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