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And now select the instance and click on actions on top right corner and hover over security and choose Modify IAM role and now choose the role you have created before if doesn’t appear click on refresh and it will be visible now and click on Update IAM Role. Click on launch instance and name your instance and here I am using the default one i.e Amazon Linux OS and choose the instance type as you wish and select the key pair if you have already created or else create a new keypair and set the remaining things as default and click on launch instance and after sometime in your EC2 dashboard you will see the instance running and make sure it passes all the checks.After selecting the polices click on next and give the role name as you wish and click on create role.It takes sometime and you can see the role you created under your roles.With the help of these collected metrics it helps us to visualize the application on cloudwatch dashboard.If we do some operational changes in the environment the cloud watch agent becomes aware of these changes and act accordingly.And finally it provides us real time analysis by using cloud watch metric map. It collects all the metrics and logs from aws resources and applications. It can also create alaram and sends notifications regarding the errors.It collects,monitors and stores the log files.By collecting these data it will help the developers to analyze and know the performance of the servers. It can monitor system-level metrics like CPU usage, memory usage, and disk space and also the application levels metrics like requests per second and error rates.

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