Link:

https://github.com/Poojashree123456/pooja-documentation.git

Nginx

It is free, open-source software that can be used as a web server, reverse proxy, load balancer and HTTP cache.

Nginx hands on :

This link includes the documnetation and the code to understand how nginx works as a server and a load balancer. https://github.com/Poojashree123456/nginx-pooja.git

Website Links:

Nginx doccumentation: https://nginx.org/en/docs/
Nginx directives: https://nginx.org/en/docs/dirindex.html
Nginx Working: https://www.nginx.com/blog/inside-nginx-how-we-designed-for-performance-scale/
Nginx as ForwardProxy: https://www.baeldung.com/nginx-forward-proxy#:~:text=Nginx%20is%20often%20used%20as,proxy%20for%20any%20requested%20location.
Nginx as ReversProxy GitHub code: https://github.com/jay-nginx/reverse-proxy
Starting and Restarting Nginx: https://www.javatpoint.com/starting-and-restarting-nginx#:~:text=We%20can%20stop%20the%20Nginx,%24%20sudo%20systemctl%20stop%20nginx

Youtube Links:

Forward and Reverse Proxy: https://youtu.be/4NB0NDtOwIQ Nginx Crash Course: https://youtu.be/7VAI73roXaY Working: https://www.youtube.com/live/MmQY8_VV80w?sfeature=share
Playlist: https://youtu.be/RzrIqzC9bQc
Nginx Context: https://youtu.be/C5kMgshNc6g
Nginx as Load Balanacer: https://youtu.be/a41jxGP9Ic8

Docker

https://github.com/Poojashree123456/pooja-documentation.git

It is virtualization software that is used to build, deploy and run the applications easily. Docker packages the applications with all necessary dependencies, libraries, and system tools together into the container.

Website Links:

Doc guide: https://docs.docker.com/
DockerFile: https://docs.docker.com/engine/reference/builder/#environment-replacement
Docker Expose: https://www.geeksforgeeks.org/docker-expose-instruction/
Container vs Vm: https://www.backblaze.com/blog/vm-vs-containers/
Docker Commands Tips: https://gist.github.com/bradtraversy/89fad226dc058a41b596d586022a9bd3
Docker Tutorial: https://stackify.com/docker-tutorial/
Docker Image Layers: https://sweetcode.io/understanding-docker-image-layers/#:~:text=Docker%20images%20are%20built%20up,an%20instruction%20in%20the%20Dockerfile.
Differet dockerfile commands: https://www.baeldung.com/ops/dockerfile-run-cmd-entrypoint
Docker Cache: https://www.baeldung.com/linux/docker-build-cache
Docker Scratch: https://codeburst.io/docker-from-scratch-2a84552470c8
CheatSheet: https://github.com/wsargent/docker-cheat-sheet#dockerfile

Youtube Links:

Code With Mosh: https://youtu.be/pTFZFxd4hOI
Code With Nana: https://youtu.be/3c-iBn73dDE
Dockerfile: https://youtu.be/WmcdMiyqfZs
Docker Commands: https://youtu.be/xGn7cFR3ARU
DockerFile Practices: https://youtu.be/JofsaZ3H1qM

Commands

• Docker images
• Docker ps
• Docker ps -a
• Docker pull name:tag [docker pull nginx:1.23]
• Docker pull nginx (brings the latest tag)
• Docker run name:tag [docker run nginx:1.23] starts a new container
• Docker run -d name:tag (ignores the background running and returns only the ID)
• Docker logs container id(shows the working now)
• Docker run -d -p 3000:80 nginx:1.23
• Docker start id(does not create a new container and the old changes stay!)
• Docker stop id
• Docker exec -it id/name /bin/bash (to make changes within the backend files)
• Docker run –name [petname] name:tag(to change the name of the container)
• To build image: docker build -t [name:tag] [location]
• To run and to build a container: docker run -d -p 4000:4000 - -name [dummyname] [imagename:tag]
• Docker ps -aq [ display all the conatiners]
• docker system prune -a (to remove all the docker containers)+build cache +images.
• The -t (or --tty) flag tells Docker to allocate a virtual terminal session within the container.
• Docker history (name of image) - to check whats built from the dockerfile

Kubernetes

https://github.com/Poojashree123456/pooja-documentation.git

Website Links:

Architecture: https://spot.io/resources/kubernetes-architecture/11-core-components-explained/
Components: https://kubernetes.io/docs/concepts/overview/components/
Inner Working: https://www.cncf.io/blog/2017/11/07/joe-beda-explains-inner-workings-kubernetes/
Namespace: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/
CheatSheet: https://gist.github.com/ipedrazas/95391ffd88190bea94ca188d3d2c1cbe
LifeCycle of a pod: https://dzone.com/articles/kubernetes-lifecycle-of-a-pod

Youtube Links:

Code with Nana: https://youtu.be/s_o8dwzRlu4
free code camp: https://youtu.be/d6WC5n9G_sM
edureka: https://youtu.be/Mn6Jc0AOUTE

RBAC

STANDS for ROLE BASED ACCESS CONTROL

• There are multiple users who needs to use the systems: eg:
• Admin - read, write delete
• marketing - read
• developer - read , write
• Roles - users , admin , developer etc…
• These roles can be binded using role bindings to above.

K8 has - users or groups
Roles provides rules/permissions to the above
Role binding is used to bind the users or groups with these roles
This works at namespace level

Cluster role/binding will provide access to all the namespaces throughout the cluster.

kubectl get serviceaccount -n kube-system |grep controller

kubectl auth can-i delete pod -n kube-system --as system:serviceaccount:default:default
kubectl auth can-i list pods -n pooja --as=system:serviceaccount:pooja:pooja-account

• APISERVER=https://kubernetes.default.svc
• SERVICEACCOUNT=/var/run/secrets/kubernetes.io/serviceaccount
• NAMESPACE=$(cat ${SERVICEACCOUNT}/namespace)
• TOKEN=$(cat ${SERVICEACCOUNT}/token)
• CACERT=${SERVICEACCOUNT}/ca.crt
• curl --cacert ${CACERT} --header "Authorization: Bearer $TOKEN" -s ${APISERVER}/api/v1/namespaces/pooja/pods/

HELM

package manager.

Website Links:

Commands: https://www.padok.fr/en/blog/helm-3-commands
Helm Docs: https://helm.sh/docs/

Youtube Links:

Nana: https://youtu.be/-ykwb1d0DXU
Helper: https://youtu.be/fm_s70i_ws0
devopsguy: https://youtu.be/5_J7RWLLVeQ

Helm Commands:

• install : helm3 install --name [name] [chart-path] --namespace [namespace]

  helm3 install demo . -n pooja

• list all releases:
  helm3 list

• delete/uninstall: helm3 uninstall/delete --purge [name] -n [namespace]

• helm3 upgrade name filename -n [namespace]

• helm3 upgrade name filename -n [namespace[] -f filename

• helm3 template name filename -n [namespace] tofilename

INGRESS

Website Links:

Ingress Docs: https://kubernetes.io/docs/concepts/services-networking/ingress/
Nginx-Ingress Docs: https://docs.nginx.com/nginx-ingress-controller/
Ingress Class: https://www.pulumi.com/registry/packages/kubernetes/api-docs/networking/v1/ingressclass/#:~:text=IngressClass%20represents%20the%20class%20of,IngressClass%20should%20be%20considered%20default. Ultimate Guide: https://platform9.com/blog/ultimate-guide-to-kubernetes-ingress-controllers/
Github: https://github.com/kubernetes/ingress-nginx

Youtube Links:

NginxIngress: https://youtu.be/AXZr2OC8Unc
Kubernetes Ingress: https://youtu.be/8eCP3CK7BDQ
Nana: https://youtu.be/80Ew_fsV4rM