Your using Proxmox 3 on an OVH Server and you want to upgrade to Proxmox 4. You have a pretty simple setup and figure it will be a simple process. While this is mostly true, if you are used to just assigning one of your Failover IP's to a container via the Proxmox interface you will quite surprised when that no longer works.
CentOS 7 installed from the OpenVZ repo can cause a problem using the Console built into Proxmox. When you launch the console, you will see two prompts for username and if you try to login the two shells will conflict and prevent you from using this feature. The problem is caused by the switch from inittab to systemd. Luckily, the fix is very easy.
By default, the Gnome login screen chooses the monitor layout and screen resolution automatically. If you want to change this, you may have been like me and searching everywhere and finding references to xrandr and init files. None of these solutions worked for me. I finally did find the solution at The Archlinux Forums.
So I happen to be a fan of Modded Minecraft, and have been playing FTB Infinity lately. One of the mods in FTB Infinity is BigReactors. Big Reactors allows you to build a nuclear reactor that can either directly produce power or it can be configured to produce steam. If you produce steam, in order to produce power you must build turbine(s) to convert the steam to power. Once you setup your reactor and turbines, you quickly realize that you can produce A LOT of power. So much that I found I can not use it quickly enough. I put in a battery to store it the excess power but the battery filled up quickly. This lead to my turbine sitting full with power, still running wasting fuel. It was quite easy to configure my reactor to power up and down as needed with 3 Reactor Redstone Ports and a simple RS Latch, but there is not an easy equivalent for the turbine.
I have created a very simple tool to help configure and forward ports for Multiple Public IPs on a DD-WRT enabled router. The biggest issue, in my opinion with DD-WRT and Multiple Public IPs is the requirement to use the commands to manually add all the ips. This can be tiresome when you have many small changes to make, want to add new port forwards, remove ips, etc. So I put together this simple tool.
I wanted to learn C# and .NET. I sat and thought for a long while what project I could do that would keep my interest long enough to produce a result others would actually use. I took a break from brainstorming to watch one of my favorite twitch.tv streams, Wyld. He ran a giveaway on his chat using one of the current bot tools out there. The winner was chosen at random from the chat and posted to the chat. Problem was there was so much traffic in the chat that most people did not see the winner. Then it came to me, there are no good programs to display results from chat polls, giveaways, and the like on stream. So I sat down and started working on Chatinator for Twitch.