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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How to Install and Use ApacheTop

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What is ApacheTop?

ApacheTop is an uncomplicated command line (CLI) utility that is used to monitor http traffic in real-time. It achieves this task by analyzing the incoming apache logs and based on that data presents understandable output to our screen. It can be configured to output X number of hits, or output X number of hits within X seconds.

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How to Install and Configure Chrony

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Network Time Protocol

It is essential to keep the correct time on a server. This is especially true when it comes to processing financial transactions or other vital functions which need to be handled in a specific order. Using the Network Time Protocol (or NTP), computers can synchronize their internal clock times with the internet standard reference clocks. In essence, NTP is a hierarchy of servers. The higher the Stratum number of a server, the more accurate the timing is and the lower the Stratum number of a server is, the lower the accuracy and time stability. Stratus are defined by the distance from the initial reference clock.

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How To Use Kill Commands In Linux

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Although Linux is considered to be a robust operating system that does not have many issues with applications, programs sometimes become unresponsive or fail to respond. When this happens, they can consume a great deal of system resources, and ultimately take down the entire system. These applications usually cannot be restarted automatically; however, as the process in question may still be running and will not get shut down completely, we need to use a command to terminate the process. When this happens, it is necessary to either restart the whole system or kill off the specific application process. Since restarting the entire system takes time and can create significant inconvenience for the clients, it is much easier to simply kill the process itself.

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Virtualization vs. Containerization

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With the constant technological development we are witnessing in the world of hosting, it is necessary to familiarize ourselves with the terminology and meaning of the systems we are using. An important distinction that we need to make is between virtual machines and containers, as they are both widely used in the hosting industry, and yet they are often confused.

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