AMIS, Data Driven Blog – Oracle & Microsoft Azure
Getting value from IoT, Integration and Data Analytics
Introduction I used LastPass for several years, and it helped me a lot to access my passwords and secrets on any moment, from multiple devices, in a secure way. But to be honest, I freaked out when I heard about the last hack [1]. I changed my most important passwords, […]
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0 Up to now, it was not very easy to see what resources you have in an AWS account. One of the ways to solve this was to enable the AWS Config Recorder and then search in the AWS Config Console. This was, however, not very easy. I’m very happy that […]
0 0 I like to do presentations about a lot of topics. Most of these presentations are recorded and the link to that recording is then shared to people who couldn’t attend the presentation live. Up to now I used bitly.com to shorten my URLs. Last time that I used bitly I […]
0 0 Introduction It is possible in AWS to check if your environment is compliant to your minimum standards. It is also possible to automatically change the environment to make it compliant again. Maybe not in a way that was designed by the developer – but compliant anyhow. Let me give an […]
0 0 Script to stop the execution of CloudFormation when you made a small error in a custom resource (Lambda function).
0 0 In this blog, I will show how you can use the SAM (Serverless Application Model) to get a presigned upload URL to AWS S3 that can be used exactly once [1]. In AWS it is possible to use a presigned URL to upload files, but the URL is valid for […]
0 0 In this blog I will show how you can use the SAM (Serverless Application Model) to get a presigned upload URL to AWS S3 that can be used exactly once [1]. In AWS it is possible to use a presigned URL to upload files, but the URL is valid for […]
0 0 In this blog, I will show how you can use the SAM (Serverless Application Model) to get a presigned upload URL to AWS S3 that can be used exactly once [1]. In AWS it is possible to use a presigned URL to upload files where the URL is valid for […]
0 0 It is the end of the year: time to look back, time to look forward. In the past year, I had a lot of extra time because of the Corona measures. I spent most of that time creating blog articles about AWS, starting with a series about the AWS shop […]
0 0 In June I wrote a blog series about the AWS Shop Example. In this series, I also wrote about X-Ray [1]. I like X-Ray: you can see how much time each step in a whole concattenation of AWS services takes and how much time it costs to send the response […]
0 0 It took me a while, but then this blog series was ready: five blog articles about Windows Failover Clustering and Auto Scaling Groups with one node. I was happy, but then a thought was nagging me. Let me explain the problem by showing you the results for the Auto Scaling […]
0 0 You might have wondered in the second blog of this series [1], why I mentioned the possibility that the Task Scheduler didn’t start after a reboot in the “on-premise” (Hyper-V) environment, but I didn’t do so in the AWS environment. Well, that’s because I used a “trick”, where AWS will […]
0 0 Introduction If you follow along in this blog series [1], I can imagine that if you deployed the CloudFormation scripts, that you think “wow, how does it work”. In this blog, I try to answer that question. 1. Windows Failover Clustering Nested stacks When you start the CloudFormationFailover.yml script, you […]
0 0 Introduction In the previous two blogs [1], I showed that it is is possible to implement a Windows Failover Cluster in AWS. In this blog, I will explain the differences between a Failover Cluster on-premise and a Failover Cluster in AWS. 1. How does a Windows Failover Cluster work on-premise? […]
0 0 Introduction In the previous blog [1] I showed the different solutions that there are to migrate an on-premise Windows Failover Cluster environment to AWS. I also showed how fast (or how slow) the failover of a node takes. I assume you might want to see how this works for yourself. […]
0 0 Introduction In this series, I will look at the migration from on-premise Windows Failover Clusters to AWS. What is the difference in recovery times between the application on-premise, the 1:1 migration of a Failover Cluster to AWS and the commonly used pattern of an Auto Scaling Group with one node? […]
0 0 Introduction We are in production with our shop example [1]. We’d like to get some statistics about our implementation: how often are the Lambda functions called? How fast are they? Of course, we could use the statistics from the performance test, but there is a faster way. This faster way […]
0 0 Introduction Our shop example [1] is now in production, wohoo!!! When you are using our example program in production, you might see that some sales are updated multiple times in the database. This will not happen very often, but you want your sales to be processed once, not twice. In […]
0 0 Introduction When you follow along in this series [1], you might have been irritated by the amount of work to test your functions. It isn’t a problem to test only the unit test for the accept function, but when you have to test the unit test for the decrypt function, […]
0 0 Introduction In the previous blog, I talked about unit tests of the AWS Shop example [1]. Today, I will continue with a smoke test and a performance test. Smoke test When you follow along, you will have seen the smoke test several times: we used a smoke test from the […]
0 0 Introduction In the last six blogs [1], I showed you an application that used AWS to process the sales from a cashing machine. This series continues with tests for this application. Some objects of our solution cannot be tested: we cannot test the API gateway, the SNS topics or DynamoDB […]
0 0 Introduction Last time, I talked about the API Gateway [1]. The URL that we used last time has randomness in it: it looks like https://54dwcigu3a.execute-api.eu-west-1.amazonaws.com/prod/shop. When you destroy the API Gateway objects and redeploy them, you will get another URL. That’s not nice: we don’t want to change the URL […]
0 0 Introduction You might have noticed that we skipped the API Gateway up to now [1]. I will write two blogs about the API Gateway. In this one, we follow the simplest route: from sending the message to the API gateway, and let the API Gateway deliver the message at the […]
0 0 Introduction The ultimate goal of our shop application [1] is to update the AMIS-shop table in the DynamoDB service. In this blog, I will tell a little bit more about DynamoDB. DynamoDB is the NoSQL solution of AWS. The way we use this table in our example is straightforward: the […]
0 0 Introduction Today [1] we’ll look at the AWS Simple Notification Service. We have two of them in our shop: one to get messages from the accept-lambda function and send them to the decrypt-Lambda function, and the decrypt-Lambda function will send the decrypted sales information via SNS to the process-Lambda. The […]
0 0 Introduction In the previous blog [1], I wrote about an example shop application in AWS. Let me show the AWS architecture of this shop again: In this blog, I will tell a little bit more about the Lambda functions in this shop example. Lambda functions are serverless functions: you don’t […]
0 0 Introduction I have to admit: I love serverless. Serverless computing is using the cloud as it is supposed to be used: it scales up when you need more capacity, it scales down to zero when you don’t need resources. That is really good when you have, for example, a shop […]
0 0 Yesterday I published a blog about AWS policies. We used the IAM wizard to create a policy. When you try to use this policy with the users we created, you will get errors like these when you go to ECS, and try to create (for example) an ECS-cluster: This is […]
0 0 Today, I’ll demonstrate how you can add policy’s, groups and users within AWS. In a couple of days, I’ll demonstrate the use of AWS Elastic Container Services (ECS) to a group of people. After the demonstration, they can play with ECS themselves. It is, of course, not the intention to […]
0 0 The problem Setting up a datastore connection is an expensive process. The amount of available connections is often limited and creating a connection costs precious time – and and in serverless functons time literally means money. Especially in something like an event processing Lambda, where thousands of events can call […]
0 0 There can be moments that you are really proud of what you achieved. You want to show it to colleagues and share your knowledge in presentations. It can be useful to let your container run in the cloud for a relatively short time. In this blog, I will explain the […]
0 0 In this article, I will deploy a simple solution in AWS in three ways: via the AWS templates of CloudFormation, via a Terraform script and via an Ansible script. By doing so, I will show the differences between the mentioned scripts. In the article, I will highlight a few examples […]
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