Devwebcl's Madness

 Inspired by Scientific American's article.

Miller's Madness

After 33 years:

COMPUTER RECREATIONS
A. K. Dewdney
Scientific American
Vol. 258, No. 5 (MAY 1988), pp. 118-121 (4 pages)

https://www.jstor.org/stable/24989094

AWS Serverless Data Lake Framework

SDLF is a peculiar framework developed by AWS as a Data Lake using their services.

It is interesting how it creates two pipelines where the data is parsed (reduced), process as a big ETL, where finally can be exploited by BI products.

• AWS Glue
• S3
• Lambda
  

https://sdlf.readthedocs.io/en/latest/index.html

https://sdlf.workshop.aws/en/

https://github.com/awslabs/aws-serverless-data-lake-framework

Minimize Costs in Cloud-Based Microservices

Beta tester:

https://www.manning.com/bundles/minimize-costs-in-cloud-based-microservices-ser

Converting Legacy Applications to Cloud Native in Kubernetes

 Beta tester:

https://www.manning.com/liveproject/converting-legacy-applications-to-cloud-native-in-kubernetes

Spring in Action, Sixth Edition

Beta tester:

+ Technical Proofer. (September 2021)

Craig Walls
MEAP began May 2020 Publication in Early 2022 (estimated)
ISBN 9781617297571 520 pages (estimated)

https://www.manning.com/books/spring-in-action-sixth-edition

1. EKS Diagrams

Cluster > Node > Pod > Container

There are two types of nodes:

• A Control-plane-node type, which makes up the Control Plane, acts as the “brains” of the cluster.
  
  

• A Worker-node type, which makes up the Data Plane, runs the actual container images (via pods).
  
  

Pod A thin wrapper around one or more containers

DaemonSet Implements a single instance of a pod on a worker node

Deployment Details how to roll out (or roll back) across versions of your application

ReplicaSet Ensures a defined number of pods are always running

Job Ensures a pod properly runs to completion

Service Maps a fixed IP address to a logical group of pods

Label Key/Value pairs used for association and filtering

Cluster > Node > Pod > Container

A container runs typically as a single Unix process

EKS simple way

The simplest way to generate an AWS EKS

- install: awscli, eksctl, kubectl

 1.
eksctl create cluster -f cluster.yml
(it takes several minutes, 20 mins?)

cluster.yml:

2.
eksctl delete cluster --region=us-west-1 --name=my-kube-config


3.
eksctl get cluster

4.
kubectl config view

5.
//mandatory? (yep!)
aws eks update-kubeconfig --name <cluster-name>
aws eks update-kubeconfig --name cobroqr-eks-RCXW8qM5


6.
kubectl create deployment hello-node --image=k8s.gcr.io/echoserver:1.4

7.
kubectl get deployment

8.
kubectl get pods

9.
kubectl expose deployment hello-node --type=LoadBalancer --port=8080

10.
kubectl get services
(aca deberia aparecer el service nuevo agregado arriba en "expose" como LoadBalancer).
aca sale tb el EXTERNAL-IP para poder probar

11.
kubectl exec --stdin --tty hello-node-7567d9fdc9-6lbx4 -- /bin/bash
(del kubectl get pods)


12.
kubectl delete deployment --all
  deployment.apps "books-node" deleted
  deployment.apps "hello-node" deleted


13.
eksctl delete cluster --name <cluster-name>
eksctl delete cluster --name my-kube-config.us-west-1.eksctl.io



---------------------------

more examples:

6.
kubectl create deployment books-node --image=091501399925.dkr.ecr.us-west-1.amazonaws.com/ecr-eks-sandbox:latest

(al ver get deployment y get pods, veo que hay 1 pod por deploy...

9.
kubectl expose deployment books-node --type=LoadBalancer --port=8080


curl http://af760c2d8e8ff40608558465fa4a4a4e-710530633.us-west-1.elb.amazonaws.com:8080/books
(se demora en publicar)


12.
kubectl delete deployment --all

cognado, da

 1. adj. Gram. Emparentado morfológicamente.

 

En Portugues es Cognato, y tenemos muchos cognados falsos

The Checker Framework

 A peculiar static code analyzer.