Tuesday, October 15, 2019

CLOUDING AWS

CLOUDING AWS

Now, you want other employees to work on AWS account as well.But you want them to have restricted access.Say, suppose you want user 1 to maybe just launch instances and user 2 can only editinstances, but not launch instances, maybe user 3 can only review the instances, andnot launch or edit these instances, right?So, all of these granular permissions can be given to your users using IAM and thatis was what Security and Identity Compliance domain is all about.Next up we have, the Storage Domain.So, Storage Domain would include services like S3 which is Simple Storage Service.So its a file system, its an object-based file system, in which you can store your filesand access them as and when required, right?People usually get confused between Storage domain and Database domain, because basicallythey are storing data, right?So, why 2 different domains?So, storage like as I said, would include services like S3, so its a file system.Now, what is the difference between a file system and database.So, a database cannot include your executable files.So, say suppose you have an image file.So, that image file would not be stored in a database, its better to store that imagefile in a file system and hence, access that image file using a path, which can be storedin the database, right?So, this is the basically the difference between a file system and a database

CLOUDING REVIEW

CLOUDING REVIEW

You can use it as work at your environment, its a clean state.Its just like a new PC that you buy.So, install a fresh operating system on your PC, and then you can configure it to be anything,and solve any software you want, and then it can serve you as you require.Right?And that is what EC2 does as well.Right?So, this is the Compute Domain.Next up, we have the Migration domain.So, Migration domain is when you want to transfer your data to the AWS infrastructure or youwant to transfer your data back from AWS infrastructure.Next up we have the Migration Service.So, this Migration service is used to transfer data to and from the AWS Infrastructure.So, if you have petabytes scale of data in your data center and you want to send it toAWS Infrastructure, you will be using services in migration.Now, there is a service called Snow Ball in migration, which is used to physically transferyour data to AWS Infrastructure.Right?So, basically what AWS does is, it sends you a physical device which is just like a harddrive, to your premises and you transfer your data on to it, then AWS sends it back to theInfrastructure.Now, this is Snowball.So, it offers similar services in the migration services.Now, you would ask me, why are we sending our data physically to AWS Infrastructure?Why not through the Internet?So, like I said, if you have petabytes scale of storage in your Data Centre, and you haveto send it to AWS Infrastructure, it is better to send it physically rather than sendingit on the internet.You can imagine it, just like giving some data to your employees, would you give iton a hard drive, on an external hard drive, if the data is large?Or would you send them an e-mail regarding that?Right.So, just like that you can imagine this scene.Next up, we have the Domain : we have security and identity compliance.In security and identity compliance, you have services like IAM, which is used to authenticateusers and define user rights to them.Say, suppose you are running a company and you have a root AWS account.

PROBLEM FACING

PROBLEM FACING IN CLOUDING

if your website is experiencing the most traffic between 4 p.m. to 6 p.m. and you areplacing say 5 servers to handle that kind of traffic, what about the time which is thereafter 6 p.m.?After 6 p.m. when the traffic goes down.You say you need only 2 servers, which can handle that traffic.Now, what about those extra 3 servers?Right?They become a liability on your investments because since youve invested a lot on thoseservers, but you cannot utilize them now because you do not have the need for them after 6p.m.Right?So, it becomes a bad investment, hence it was a problem.So, these are all the problems that people faced before cloud computing.Now we have to fix these.So, lets see, how do we fix them?So, we came up with Cloud computing.So, now in Cloud computing, instead of buying servers, you actually rent them, right?So, instead of burning a lot of your investment on buying servers, you can actually investit on some other things, may be, a better idea or may be hiring more people, right?So, first of all, the foremost things that you are renting servers cuts on your costinto a fraction.Secondly, scalability was a problem.So, now with Cloud computing, you can scale up or scale down according to your needs.So, you dont have to foresee what kind of future your application will have or whatkind of traffic will be coming 

Monday, October 14, 2019

PROBLEM FACING IN CLOUDING

What is facing problem in clouding

Now, these things led to problems.Now, what were those problems?Let us refresh them.So, first of all this set-up was very expensive since you are buying a lot of servers, andguys, servers are not cheap, they are very expensive, right!So this set-up was very expensive.Secondly, since you had to troubleshoot problems, they used to conflict with their businessgoals, because your aim should be making your application better, right?But if you are also thinking about, whether your application is or is not facing any downtime or if your server hardware configuration is up to date or not, you are not investingthat much time on your application as you may need to, right?So, it used to conflict the business goals.Thirdly, since your traffic is varying, your servers will be idle most of the time.What this basically means is, since you bought a minimum number of servers keeping the peaktime in mind, now, what about the time when the peak time is gone, right.

CLOUD COMPUTING

What is cloud computing

Hey guys! This is Pankaj from India.Today in this session, we will be talking about Amazon Web Services, so without wastingany more time lets move on ahead and see what is our agenda for today.So, we will be following a top-down approach, we will start off with what is cloud and thenmove on to what is AWS.After that we will be discussing the different domains which are there in AWS, followed bythe AWS services.So, I will be briefing you guys up on all the AWS services, which are out there, afterthat we will be discussing the AWS pricing options.So, we will be discussing all the key points which are there in AWS pricing.Once we are done with all the learning, I will teach you guys, how to migrate your applicationsto AWS infrastructure and in the end, we will be solving a real-life problem using theAWS knowledge that we will be getting today.So guys, this is our agenda for today, are we clear?Alright.I am getting yes.