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An active Kubernetes cluster can accumulate old containers and images. Ensuring discarded resources are removed when redundant helps to free up resources on your cluster’s nodes. Here’s how to approach garbage collection in Kubernetes. Container Images Kubernetes has a built-in garabage collection system that can clean up unused images. It’s managed by Kubelet, the Kubernetes worker process that runs on each node. Kubelet automatically monitors unused images and will remove them periodically....

The module comes with several configuration parameters that let you define the number of concurrent requests a client can make in a set timeframe. Further requests will be blocked for a period after the limit is exceeded. Installing mod_evasive Installation steps vary depending on your operating system distribution and Apache release. For the most popular combination of Apache 2.4 on a Debian-based system, use the following steps. Instructions for building from source are also provided in the project’s repository....

People often “tether” their computers to their smartphones, sending their computer’s network traffic over the device’s cellular data connection. “Reverse tethering” is the opposite – tethering your Android smartphone or tablet to your PC to use your PC’s Internet connection. This method requires a rooted Android and a Windows PC, but it’s very easy to use. If your computer has Wi-Fi, it may be easier to create a Wi-Fi hotspot using a utility like Connectify instead....

To assist your readers in quickly moving to pertinent information in your document, you can use the Cross-Reference feature in Microsoft Word. This allows your audience to simply click and navigate to related information in the same document. Unlike the Insert Link feature in Word that allows you to link to other places in your document, the Cross-Reference feature works with tables, figures, footnotes, endnotes, and numbered items rather than just headings and bookmarks....

One of the often overlooked features of Photoshop is the easily customizable GUI. If you’ve just been using the standard workspace, this simple how to will give you all you need to make your Photoshop workspace truly your own. Our task today is to create our own custom “workspace,” or a saved file with locations of panels, menus, and shortcuts. This allows pros to create multiple workflows depending on what kind of files they’re working on....

Addictive Tips shares a detailed guide to swapping out your boot animation by either downloading an existing alternate boot animation or creating your own. One of the nice things about the technique is you can do it on both rooted and unrooted phones–the difference is users with rooted phones can save the boot animation in a system directory where it will persist after a hard reset. Hit up the link below for additional details as well as some sources to find boot animations....

We’ve previously covered customizing Windows Explorer’s context menus by adding custom shortcuts and removing existing shortcuts with the Registry Editor. FileMenu Tools is an easy-to-use, graphical alternative to these fairly complicated registry hacks. FileMenu Tools can add new context menu items and remove existing ones, whether they came with Windows or a third-party program. It also comes with a variety of new context menu options, but you can easily disable them, if desired....

We’ve covered why “Do Not Track” isn’t a silver bullet that prevents you from being tracked. However, if you don’t like being tracked and want to express that preference to websites, you can enable “Do Not Track” in every browser. To Google’s credit, future versions of Chrome explain exactly what Do Not Track does when you enable it. Remember that, by enabling Do Not Track, you’re just expressing a preference....

The addition of the Ribbon to Explorer in Windows 8 wasn’t exactly a popular decision—there were outcries from loads of people about how it would make the whole experience bloated and waste space. Here’s the simple solution. Hit the Win+R keyboard shortcut to bring up the Run box, and then type gpedit.msc into the dialog and hit Enter. Browse down to the following section: Once you’re there, find the option on the right-hand pane for “Start Windows Explorer with Ribbon minimized” and double-click it....

Images are common components in slideshows, adding visual flair to your presentations. So, what if you have a picture with a spot you want to focus on? With a little editing, you can highlight part of an image in PowerPoint. It might be the face of your company or mission, a product on the store shelf, or a handshake showing a good business relationship. Whatever it is you want to spotlight, you can do it easily....

What is ZFS? ZFS is an advanced file system that originated at Sun Microsystems for use with their Solaris operating system. Following Oracle’s acquisition of Sun in 2009, ZFS is now under Oracle Corporation ownership. However, in a typical act of altruism, from 2005 onwards, Sun released an open source version of ZFS. Inevitably, this was ported to Linux where it gained wider exposure. The open source version of ZFS—openZFS—is managed and maintained by the OpenZFS project....

Screenlets are small applications that are similar to Gadgets in Windows 7, that allow you to place things like sticky notes, clocks, calendars on your Linux Mint desktop. Screenlets represent items you might keep on a physical desktop, plus more. We’ll show you how to install the Screenlets program, add screenlets to your desktop and remove them, and how to add screenlets that you download from the internet. To install the Screenlets program, select Other | Software Manager from the Applications menu....

Ubuntu has pretty good theming system, visual effects, and eye-candy stuff, but you may love the elegance of Windows 7 Aero class, transparency, or the Start Menu. Today we’ll show you how to transform Ubuntu to look like Windows 7. Of course, it won’t be an exact match, but it’s close enough that at first glance a lot of people would think it’s Windows 7. Keep reading to see how to do this....

Stern is an open-source tool that makes it easier to stream real-time Kubernetes logs to your terminal. You can use Stern to monitor logs from multiple containers simultaneously, giving you a combined view of activity inside Pods. Why Use Stern? Kubectl offers built-in log tailing using the kubectl logs command. Although this can work well in simple cases, it lacks support for aggregating logs from multiple sources with further filtering of the results....

You’re a geek on the go and it’s important to keep tabs on your torrents when you’re away from home. Today we take a peak at how you can monitor, manage, and even start your torrent downloads when you’re away from your computer. Whether you want to keep tabs on your torrents while you’re in class, at work, or just lounging on the couch, we’re going to show you how to monitor and manage your torrents from your Android phone, iPhone, and other mobile devices as well as from a remote computer using a standard web browser....

Windows 8 comes with a shiny new version of PowerShell, version 3. But while playing around with it, I have noticed a lot of scripts that I had written for version 2 are now throwing errors, so here’s how to get version 2 back while not losing version 3. Launching PowerShell 3 Because it’s installed by default we don’t have to do anything special, just switch to the Start Screen and type PowerShell and hit enter....

Your laptop’s got a trackpad, you use a mouse for gaming, and you’re tired of manually switching settings constantly. Here’s how to separate both devices and how to set up a hotkey to switch between two settings on one device. Two Devices, Two Speeds, Two Options There are two programs that can do this for you, each one with caveats. The first is Mouse Speed Switcher, a simple utility that allows for multiple input devices and multiple settings....

Programs–like your antivirus–can often install their own browser extensions without your permission, so this is useful for uninstalling those as well. Each web browser has its own extensions. Removing an extension, add-on, or plug-in from one browser–like Chrome–won’t remove any similar extensions from your other installed browsers–like Firefox or Internet Explorer. Note that browser plug-ins–like Java, Silverlight, and Flash–are different, and must be uninstalled in another way. How to Uninstall Extensions in Google Chrome RELATED: How to View and Disable Installed Plug-ins in Any Browser...

PHP 8.1 will finally add language support for enums. Enums, short for enumerations, are types which can only be instantiated with specific values. They’re commonly found in other object-oriented languages but have previously required userland workarounds to implement in PHP. Basic Syntax Here’s what a simple enum looks like: The case keyword, previously part of switch statements, is used to delineate the specific values the enum accepts. Values are referenced in the same way as class constants:...

Windows Server 2008 R2 and later releases of the product ship with a virtualization platform called Hyper-V, which works quite well since it’s built into Windows. Today we’re going to show you how to install it. Note: this is part of our ongoing series teaching IT administration basics, and might not apply to everybody. Installing Hyper-V Launch the Server Manager, by clicking on the pinned icon or using the Start Menu....