Wednesday, August 31, 2016

Cloud computing, a green alternative

blog CloudComputing  Green

Why is cloud computing a green technology?

To understand the potential advantage of cloud computing in more detail, it Is important to look at the different factors contributing to a lower per- user carbon footprint. These factors apply across cloud providers in general and are even relevant for many on-premise scenarios.

The comparatively smaller carbon footprint of cloud computing is a consequence of both improved infrastructure efficiency and a reduced need for it infrastructure, to support a given user base. In turn, these primary levers are heavily influenced by four key factors.

Dynamic Provisioning: Cloud providers can reduce the inefficiency caused by over-provisioning by optimizing the number of active servers to support a given user base.

Multi-tenancy: Major cloud providers are able to serve millions of users at thousands of companies simultaneously on one massive shared infrastructure.. By operating multi-tenant environments, cloud providers can reduce overhead for on-boarding and managing individual organizations and users.

Server Utilization: Cloud computing can drive energy savings by improving server utilization. As large-scale cloud providers tend to run their infrastructure at higher and more stable utilization levels than corresponding on-premise operations, the same tasks can be performed with far fewer servers.

Data Center Efficiency: data center design-the way facilities are physically constructed, equipped with IT and supporting infrastructure, and managed- has a major impact on the energy use for a given amount of computing power. A common measure of how efficiently a data center uses its power is called power usage effectiveness ratio.

In addition other important factors to the four primary drivers of cloud computing´s environmental advantage, other contributing factors are worth mentioning:

Hardware comes with an “embodied” carbon footprint from the energy associated with producing, distributing and disposing of equipment.
Cloud providers are more likely to take an active role in tailoring hardware components to the specific needs of the services they run.
Cloud computing drives the efficiency of IT with unprecedented economies of scale, higher sophistication and strong incentives to create ongoing efficiencies and continue improvement while protecting the environment.
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Tuesday, August 9, 2016

Manage your Linux server via Web Interface

How to manage linux server
Most of the people want to have a website, but having a website means managing a server so they think that managing it can be painful and costly and they fear about it. Let me tell you that there are Graphical User Interfaces (GUI’s) that can help you with the management of a Linux server with just installing them. You can do as much as you want in your server with just a few clicks and all of this in your web browser, no need to access the server command line.
Here are a few examples:

Web Host Manager, designed for system administrators providing full control of the server as if you were logged into the command line. It allows to web hosting providers to add unlimited hosting accounts, new technologies, applications, security, etc.
WHM allows to the host provider basically the same functions as it was a cPanel but with full system access to it. Credentials for authentication, support sections, security, server configurations, everything for their clients. They can setup different hosting plans, according to the client needs and server requirements for everyone. Set reseller plans is very simple as setting a cPanel account giving certain privileges to them
 WHM interface user friendly
cPanel is an user interface that any person or website owner can use in order to make and manage their website. It is mostly used and provided by Web hosting companies to help website owners perform essential tasks quickly and easily and control every aspect of their websites.
With cPanel you can manage users, passwords, sub domains, upload files, create ftp users, emails, install shopping carts, create and delete databases, protect your directories, backups, etc. Pretty much you can install any software you need and/or your web hosting can provide.
 Cpanel Interface

Virtualmin is a powerful and flexible free web hosting control panel for Linux a-like systems based on Open Source web-based systems management. There you can manage your virtual domains, mailboxes, databases, applications, and the entire Linux server, from one comprehensive and easy interface.

There are also paid versions of Virtualmin depending on the number of domains that you need, from 10 to unlimited domains and like every GUI available, it counts with support.

Webmin is an Open Source web-based interface for system administration. You can use it with any web browser; you can setup user accounts, Apache, DNS, file sharing and much more. It also removes the manually edition of the Linux a-like configuration of servers and allows you to manage a system from the console or remotely.
It works like cPanel, you do not have full access to the server specs, you can’t control everything but your own folder/domain in which you are. You can change everything within your rank of permissions but you won’t have full access to do anything you want.
 Webmin Interface
Utilizing user interfaces that allow you to control and manage your server needs are a huge help to website owners that don’t know how to use the command line, or for people that do not want to get into troubles with the server needs or anything. You can always find well known hosting providers that will offer you these tools in order to make your experience better and pleasant.

Advantages of using a GUI:
Simple installation process: Installation of these interfaces is very simple and can be installed in a few steps.
Preconfigured Services: After installation you can find preconfigured services which can help you to start setting up your required environment.
Friendly user interfaces: the interfaces are very simple to understand and start configuring your server as you like.
Automatic processes: With just clicks you can add users, mails, etc
Easy management of the server (through web browser): You can access from any browser and configure it without even login into the server.
No command line knowledge required: You don’t need any knowledge of the command line since they do your job automatically.

Disadvantages of using a GUI:
Slower response time of the Hosting providers: if you encounter a problem with your configuration, you can always request technical support, which in some cases you will need to wait from 5 minutes to 24 hours for them to reply, depending on the customer service.
Slows the server down: sometimes installing any Web hosting manager system can slow your server down.
License Costs (WHM and cPanel): most likely you need to attain a license to start using them.
Restricted for size: Panels are most meant for websites that fall in the range of small and medium.
Hosting systems Vulnerabilities: Remember these systems can vulnerable as it can prone a security risk to your content due to its time of update process.
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