How Has Containerization Changed the World?

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container port stacked

The arrival of containerized software has drastically changed the landscape of web hosting, and web application provides. The simplification and speed that comes with containers make deploying services like websites so efficient that the traditional model of dedicated servers running specific web-based software is almost obsolete. This being said, there will always be a place for virtual server projects and dedicated servers handling specific tasks like HIPAA compliant hosting services.

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How to Install and Use Containerization

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What is Containerization?

Containerization is a form of virtualized operating system developed as a response to the many problems of hardware-level virtualization. Because the latter runs a full-blown guest operating system, it is very resource-intensive and incurs a significant amount of overhead, but containerization is much lighter. Since the containers share the host machine’s kernel, the resources are not wasted on running separate operating system tasks. This allows for a much quicker and lightweight deployment of applications.

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Docker For Beginners

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What is Docker?

31920.docker

Docker is a containerization software that is used for automating the deployment and management of applications within an isolated environment. This software allows us to “pack” and ship an application, along with all of its needed files, libraries, and dependencies, into a “docker container“. That container can then be easily ported to any Linux system that contain cgroups support within the kernel, and provides a container management environment. Docker is one of several containerization implementations (not to be confused with virtualization) based on this cgroups mechanisms built into the Linux kernel.

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How to Install Docker on CentOS 8

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What is Docker?

Before we begin, let’s describe what Docker is. Docker is a set of virtualization tools that allows us to create, test, and deploy containerized applications quickly and easily on a dedicated server. It has become very popular and used almost everywhere in our daily lives. Thanks to containerization, we can quickly launch applications on different private cloud host platforms utilizing small bundles which contain all the needed packages, libraries and configuration file to run an application. These docker packages communicate via established network channels.

Docker Silhouette
Docker Silhouette
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How To Install The Latest Kernel Version

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In this tutorial, we will learn how to install the latest kernel version on multiple Linux distributions. 

What Is A Kernel

terminal.cli.2.20.20

First, let’s define what a kernel is defined as. The Linux kernel is basically the brain of your hardware. Its main purpose is to facilitate communications between your hardware and software. As an example, if an application needs to make a change (say switching the screen resolution of your monitor), the software submits a request to the kernel, and the kernel uses the available video driver options to modify the resolution. 

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The Benefits Of Containerization

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Fast, Portable and Secure.

Containerization is a technology that is taking the IT world by storm! It’s no surprise considering the considerable benefits of shifting to a container based deployment.

container ship

Today we’ll be discussing the top benefits of containers, and why you might want to consider containers for your next web app. Let’s dig in!

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How To Use the Image Optimizer Package for WP-CLI

Reading Time: 2 minutesThere will be many times when you will need to optimize all images in a site media library. If you are familiar with using WP-CLI, then there is a very handy package which can be installed. The package is called “image-optimize” and it will simplify the process of getting your images ready for web hosting.

This package is not for “managed hosts” since the libraries needed will not be able to be installed having without root access and it can be CPU resource intensive.

Preparing to Run Commands

The package for WP-CLI is called image-optimize. To be able to use this package, you will need to login to your site’s server and update WP-CLI. You can update WP-CLI by running the following command:

wp cli update

Next, you will need to install a number of libraries that the package uses to optimizes jpeg, png and gif images with these commands:

sudo apt-get install jpegoptim
sudo apt-get install optipng
sudo apt-get install pngquant
sudo apt-get install gifsicle

Now you can install the stable version of the image-optimize package with this command:

wp package install typisttech/image-optimize-command:@stable

Optimizing Site Images

The following are examples of the commands to run after a WordPress core update:

wp image-optimize mu-plugins
wp image-optimize plugins
wp image-optimize themes
wp image-optimize wp-admin
wp image-optimize wp-includes

You can use this command to regenerate all thumbnails on a site.

wp media regenerate --yes
You may need to limit how many images that image-optimize will process in a single back. To limit the batch size,  you just need to add the –limit flag to the end of the batch command and specify the amount, as shown in these examples:

wp image-optimize batch --limit=500
wp image-optimize batch --limit=1000
wp image-optimize batch --limit=2500
wp image-optimize batch --limit=5000

When using the image-optimize WP-CLI command, server CPU usage may be intensive, so run the batch commands in smaller sizes during the off hours times on your site. You can track CPU usage whilst running a batch optimize command by using htop. You can install and run htop using the following commands:

sudo apt-get install htop
htop

To use htop to monitor server load, keep a terminal window open while the batch optimize command is running in another terminal window. In our testing, the CPU usage was not too high.

1.61GB/3.74GB Memory usage
180M - 3.86GB Swap

Restoring Optimized Images

Before images are optimized backup versions are created, which means that you can restore at any time to a backup file and replace out the optimized version.

For example, Attachment 123 was optimized using this command:
wp image-optimize attachment 123

To restore the attachment for 123 the command to run would be:
wp image-optimize restore 123

You can use the wp media regenerate command to regenerate a specific media file.
wp media regenerate 123

 

Being able to  optimize the images in your WordPress sites media library will reduce the amount of storage needed for your site. Optimization will also improve the speed and performance of your site for visitors, improving user experience and satisfaction.

How To Install Docker on Ubuntu 16.04

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Adding Docker to an Ubuntu server.

Docker is an open-source software tool designed to automate and ease the process of creating, packaging, and deploying applications using an environment called a container. The use of Linux containers to deploy applications is called containerization. A Container allows us to package an application with all the parts needed to run an application (code, system tools, logs, libraries, configuration settings, and other dependencies) and sends it out as a single standalone package deployable via Ubuntu (in this case 16.04 LTS). Docker can be installed on other platforms as well. Currently, the Docker software is maintained by the Docker community and Docker Inc. Check out the official documentation to find more specifics on Docker. Docker Terms and Concepts.

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What is a progressive JPEG?

Reading Time: 2 minutesThe JPEG image format is one of the most commonly used image formats on the web. The format is most often used for colorful, complex images such as photographs. The JPEG specification includes a range of valid file extensions, however the most common are .jpg and .jpeg.

No matter the extension used all JPEG images will be treated more or less the same. Although not all JPEG images are created equally. In the image formats specification there exists a lesser known setting. This setting, called Progressive Mode, can drastically improve the experience using JPEGs on the web. Continue reading “What is a progressive JPEG?”

Video: Liquid Web MWP Image Compression

Reading Time: < 1 minuteThe key to running a successful blog or website is having great content and making it easy for your users to find what they need. Part of providing great blog content usually involves using images and graphics to enhance your articles, posts and pages. Doing so will provide your readers with visual context and can help break up large blocks of text. Using lots of visual elements and images isn’t without its trade-off though.

The more HD photos you use, the more data a user has to download when reading your articles. This can mean longer load times for users, and higher disk and bandwidth usage for your server. That’s why you should always optimize your website’s images since long page loads can cost you views. In this featured video Chris Lema shows how our Managed WordPress improves this with a default plugin. Continue reading “Video: Liquid Web MWP Image Compression”