Abdul Salam's Deploying and Managing a Cloud Infrastructure PDF

By Abdul Salam

ISBN-10: 1118875109

ISBN-13: 9781118875100

(Real international talents for the CompTIA Cloud+ Certification and past)

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Additional info for Deploying and Managing a Cloud Infrastructure

Example text

First you will have to specify the Amazon Machine Image (AMI), which is Amazon’s version of a template used to spin up a preconfigured customized server in the cloud. In AWS, you can select a vanilla OS or your own template (AMI), or you can select from hundreds of community AMIs available on AWS. It is, however, recommended not to spin mission-critical applications on top of shared community AMIs until you are certain about the security practices put in place. 3. Next, select the size of the instance.

Imagine scaling your application in a physical location where provisioning new servers would mean a lead time of a few or several days. This is a familiar story with most of the web startups pre-cloud, or pre-AWS to be more precise. Another angle to the financial component of this equation is to look at both expansions and contractions in the usage of the product/service. In times of spikes, you will need to make investments into infrastructure to plug in more servers, but what happens when the spike normalizes or, worse, goes into a valley (steep decline in application/service usage)?

There was unnecessary physical interaction and manual provisioning of physical resources. This is inefficient and something that cannot be linearly scaled up. Imagine doing this with millions of users and hundreds or even thousands of servers. Needless to say, it would be a mess. This manual provisioning is not only inefficient, it’s also financially infeasible for startups because it requires investing significant capital in setting up or co-locating to a data center and dedicated personnel who can manually handle the provisioning.

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Deploying and Managing a Cloud Infrastructure by Abdul Salam


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