(Notice we did a get after setting the data and it did, indeed, change.Finally, let’s delete the node by issuing:[zkshell: 16] delete /zk_test[zkshell: 17] ls /[zookeeper][zkshell: 18]Problem 2.Use the AWS Simple Workﬂow Service to create the basic workﬂow patterns inFigure 8.TheElastic Beanstalkprovides a better environment than thesimple Workﬂow Service.To use it:1. Sign in to the AWS account.2. Select the "AWS Management Console" from the left panel.3. Select the "AWS Elastic Beanstalk" under "Deployment and Management"4. Configure the AWS settingsProblem 3.Use the AWS CloudFormation service to create the basic workﬂow patterns inFigure 8.33
1. Sign in to the AWS account.2. Select the "AWS Management Console" from the left panel.3. Select the "AWS Cloud Formation" under "Deployment and Management"4. Describe the AWS resources needed to run the application in a simple textfile called a template and AWS CloudFormation takes care of provisioning.5. A good way to implement several workflow patterns is to use SNS(Simple Notification Service). To do so:5.1 Use a UI to create a new topic5.2 Manage the subscribers5.3 Publish messages5.4 Set policies, configure access control.Problem 6.The paper  describes the elasticLM, a commercial product which provideslicense and billing Web-based services. Analyze the merits and the shortcomings of the system.TheelasticLMis a technology for creating and managing software licenses designed fordistributed computing environments like Clouds. License usage is authorized through negoti-ation of Service Level Agreements between the license service and the user taking into accountavailability, policies defined locally, policies of the service provider or attributes defined foruser in a virtual organization. The negotiation allows to inform the user about the price ofthe license before executing the application. The price information can also be used to checkthe request against budget constraints defined, e.g., for user or department.The result of a successful negotiation is a mobile token which can be used e.g. in aIaaSenvironment, to execute an application with the agreed features.Tokens can move to theenvironment where needed, can be combined with other tokens or licenses created on the ﬂyby an ASP.Software licenses are treated and implemented as services, thus providing platform inde-pendent access just like any other visualized resources.Licenses as services overcome thelimitations of current monolithic licensing models. Licenses will be managed as agreements,extending the conventional Service Level Agreements (SLAs) which are made today betweensellers and buyers in the market. Licenses will be dynamic in order to support agreementsthat may change over time and where the dynamic negotiation between service provider andconsumer is needed. In addition to licensing and license management,elasticLMoffers ad-ditional capabilities like monitoring the use of applications (license protected or not) andcreating usage records for later evaluation.
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- Summer '17
- ALBERT DOMINIC
- The Land, cloud service, Cloud delivery models, Cloud Computing delivery