A cloud is a collaboration of networks, hardware, services, storage, and interfaces that help in delivering computing as a service. It has three users:
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It is an advanced-stage technology implemented so that the cloud provides its services globally as per the user requirements. It provides a method to access several servers worldwide.
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The main benefits of Cloud Computing are:
Applications Stored in Storage Services
Infrastructure as a Service (IaaS) Platform as a Service (PaaS) Software as a Service (SaaS)
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Windows Azure Platform Services
FC: Master–Slave operations Nova: Parallel process and its shared database
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Use of Fault Domains:
Use of Upgrade Domains:
Storage and Network Availability:
AMI is Amazon Machine Image, which basically is a copy of your root file system. It feeds the information required to launch an instance.
We implement AMI by specifying an AMI whenever we want to launch an instance. Multiple instances can be launched from a single AMI with the same configuration. In the case of launching instances with different configurations, we would need to launch different AMIs.
AMI includes one or more snapshots of your EBS volumes, in the case of instance-store backed AMIs, along with a template for the root volume of your instance (like an operating system, an application server, and applications).
It launches the permissions that decide which AWS accounts can use the AMI for launching instances. It also needs a block device mapping for specifying the volumes in order to attach them to the instances whenever they are launched.
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Cloud Bursting: Access capacity and specialized software are available in rhe public cloud and not in the private cloud. Examples: Virtual Amazon and Dynamo
Leveraging the best of both worlds, there are hybrid clouds.
The platforms that are used for large-scale Cloud Computing are:
The different deployment models in Cloud Computing are:
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The different layers used by cloud architecture are as follows:
The full form of ‘Eucalyptus’ is ‘Elastic Utility Computing Architecture for Linking Your Programs to Useful Systems’.
Eucalyptus is an open-source software infrastructure in Cloud Computing, which enables us to implement clusters in the Cloud Computing platform. It is mainly used to build public, hybrid, and private clouds. It has capabilities to convert our own data center into a private cloud and provides its functionalities for various other organizations.
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Cloud Computing consists of different data centers as follows:
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The characteristics are:
AWS stands for Amazon Web Services which is a collection of remote computing services also known as Cloud Computing. This technology is also known as IaaS or Infrastructure as a Service.
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The key components of AWS are as follows:
This is one of the essential features of AWS and cloud virtualization. We spinup a newly developed large instance where we pause that instance and detach the root EBS volume from the server and discard. Later, we stop our live instance and detach its root volume connected. here, we note down the unique device ID and attach the same root volume to the new server, and we restart it again. This results in a vertically scaled Amazon instance.