Namespaces and Dimensions All data in CloudWatch is recorded with a specific namespace format. Default metrics are formatted as Service:Metric. For example, the CPU Utilization for the EC2 instances is represented by the following namespace: EC2:CPUUtilization. Dimensions are key:value pairs assigned to metrics to allow for a more granular analysis of those metrics within a […]

Creating buckets to hold data Now, you will see how to create a bucket, upload an object, and read the object using the AWS CLI: $ pwd/Users/baba/AWS-Certified-Machine-Learning-Specialty-2020-Certification-Guide/Chapter-5/s3demo/demo-files$ aws s3 ls $ aws s3 mb s3://demo-bucket-baba –region us-east-1make_bucket: demo-bucket-baba$ aws s3 ls2020-11-04 14:39:50 demo-bucket-baba $ aws s3 cp sample-file.txt s3://demo-bucket-baba/upload: ./sample-file.txt to s3://demo-bucket-baba/sample-file.txt Figure 2.2 – […]

Reviewing AWS Directory Service AWS Directory Service offers several choices for organizations to deploy existing applications on AWS that rely on Microsoft AD or Lightweight Directory Access Protocol (LDAP). This is the native AWS service to use when you need a directory to manage users, groups, devices, and access. AWS Directory Service proposes different options […]

Gateway Load Balancers Gateway load balancers are used with virtual network appliances at the network layer 3 of the OSI model. The listener uses a transparent network gateway to distribute traffic across networking devices such as intrusion detection/prevention systems, firewalls, compliance validation, policy enforcement, and deep packet inspection appliances. On-demand scaling allows for the dynamic […]

Security Considerations for RDS Having gone through the RDS service and its capabilities, you can now examine some of the security considerations and best practices for RDS: Amazon Aurora Amazon Aurora was built in response to customers wanting the performance of commercial-grade database engines such as Oracle or Microsoft SQL Server without dealing with all […]

Cram Quiz Answer these questions. The answers follow the last question. If you cannot answer these questions correctly, consider reading this section again until you can. 1. You have been put in charge of selecting a monitoring system for your application. You are required to assess several monitoring platforms from a functional point of view. Which […]

AWS Resource Access Manager (RAM) There is also an alternative for sharing resources across multiple accounts. AWS RAM is a central service that allows you to share resources you own in one account with multiple accounts either within your own AWS OU or beyond. There is one caveat, though: you cannot share all types of […]

Bootstrapping methods Cross-validation is a good strategy to validate ML models, and you should try it in your daily activities as a data scientist. However, you should also know about other resampling techniques available out there. Bootstrapping is one of them. While cross-validation works with no replacement, a bootstrapping approach works with replacement. With replacement means […]

Application Load Balancers The AWS application load balancer (ALB) is at the high end of the ELB family of load balancers. As the name indicates, it operates at the application layer, or layer 7, of the OSI stack and has a long list of features, as outlined in Figure 1.12. The listener supports unencrypted HTTP […]

Important note As per Amazon’s docs, S3 provides read-after-write consistency for PUTs of new objects, which means that if you upload a new object or create a new object and you immediately try to read the object using its key, then you get the exact data that you just uploaded. However, for overwrites and deletes, […]