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learn k8s
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‎03-installation-and-setup/kind-bind-mount-1/test.cc

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‎03-installation-and-setup/kind-bind-mount-2/test.xx

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‎03-installation-and-setup/kind-bind-mount-2/test2.xx

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‎04-built-in-resource-types/Deployment/Deployment.nginx-minimal.yaml

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spec:
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containers:
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- name: nginx
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image: nginx:1.26.0
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# Change image tag then ReplicaSet will create new Pods
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image: nginx:1.25.0

‎04-built-in-resource-types/Deployment/Taskfile.yaml

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desc: "Roll the pods in one of the deployments"
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cmds:
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- kubectl rollout restart deployment nginx-better
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# Switch to previous ReplicaSet
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- watch "kubectl get pods"
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# kubectl rollout undo deployment nginx-better
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05-delete-namespace:
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desc: "Delete the namespace to clean up"
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cmds:

‎04-built-in-resource-types/Ingress/Ingress.minimal-nginx.yaml

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pathType: ImplementationSpecific
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backend:
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service:
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name: nginx-clusterip
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name: nginx-nodeport
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port:
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number: 80
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# kubectl run curl-pod -it --rm --image=curlimages/curl --command -- sh
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# curl -H "Host: ingress-example-nginx.com" <node_ip>:<node_port>
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# -H to specify the host header
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# <node_ip>: is the IP of the node where the Ingress controller is running
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# <node_port>: is the NodePort of the Ingress controller

‎04-built-in-resource-types/Service/Taskfile.yaml

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- cmd: gum style "🚨 Deleting the namespace recursively deletes the resources inside of it! 🚨 "
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silent: true
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- kubectl delete -f Namespace.yaml
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# Debug shell on a node => It create a debug pod on the node
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# kubectl debug node/kind-worker2 -it --image=ubuntu
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# Debug shell on a pod => It create a debug pod on the same node
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# kubectl run curl-pod -it --rm --image=curlimages/curl --command -- sh
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# curl <pod_ip>:<pod_port>
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# curl <service_ip or service_name>:<service_port>
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# eg: curl nginx-clusterip
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# node_port defined in the service
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# eg: curl <node_ip>:<node_port>
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# kubectl run curl-pod -it --rm -n default --image=curlimages/curl --command -- sh
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# outside namespace
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# curl <service_name>.<namespace>.svc.cluster.local
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# eg: curl nginx-clusterip.04--service.svc.cluster.local

‎05-helm/postgresql/Taskfile.yaml

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silent: true
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- helm registry login registry-1.docker.io
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desc: Login to OCI registry
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# sonthh98/<docker-hub_password>
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05-list-registry:
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cmds:

‎06-demo-application/api-golang/Taskfile.yaml

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vars:
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DATABASE_URL: "postgres://postgres:foobarbaz@localhost:5432/postgres"
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IMAGE_REPO: sidpalas/devops-directive-docker-course-api-golang
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IMAGE_REPO: sonthh98/devops-directive-docker-course-api-golang
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IMAGE_TAG: foobarbaz
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tasks:

‎06-demo-application/api-node/Taskfile.yaml

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vars:
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DATABASE_URL: "postgres://postgres:foobarbaz@localhost:5432/postgres"
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IMAGE_REPO: sidpalas/devops-directive-docker-course-api-node
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IMAGE_REPO: sonthh98/devops-directive-docker-course-api-node
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IMAGE_TAG: foobarbaz
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tasks:
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build-container-image:
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desc: Build container image
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cmds:
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- docker build -t {{.IMAGE_REPO}}{{.IMAGE_TAG}} .
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- docker build -t {{.IMAGE_REPO}}:{{.IMAGE_TAG}} .
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build-container-image-multi-arch:
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desc: Build multi-arch container image

‎06-demo-application/client-react/Taskfile.yaml

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version: "3"
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vars:
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IMAGE_REPO: sidpalas/devops-directive-docker-course-client-react-nginx
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IMAGE_REPO: sonthh98/devops-directive-docker-course-client-react-nginx
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IMAGE_TAG: foobarbaz
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tasks:

‎06-demo-application/load-generator-python/Taskfile.yaml

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version: "3"
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vars:
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IMAGE_REPO: sidpalas/devops-directive-kubernetes-course-load-generator-python
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IMAGE_REPO: sonthh98/devops-directive-kubernetes-course-load-generator-python
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IMAGE_TAG: foobarbaz
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tasks:

‎06-demo-application/postgresql/Taskfile.yaml

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version: "3"
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vars:
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IMAGE_REPO: sidpalas/devops-directive-kubernetes-course-db-migrator
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IMAGE_REPO: sonthh98/devops-directive-kubernetes-course-db-migrator
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IMAGE_TAG: foobarbaz
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tasks:

‎07-deploying-demo-application/api-golang/Deployment.yaml

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spec:
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containers:
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- name: api-golang
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image: sidpalas/devops-directive-docker-course-api-golang:foobarbaz
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image: sonthh98/devops-directive-docker-course-api-golang:foobarbaz
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env:
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- name: PORT
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value: "8000"

‎07-deploying-demo-application/api-golang/IngressRoute.yaml

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apiVersion: traefik.containo.us/v1alpha1
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kind: IngressRoute
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metadata:
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name: api-golang
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namespace: demo-app
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spec:
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entryPoints:
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- web
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routes:
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- kind: Rule
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match: Host(`kubernetes-course.devopsdirective.com`) && PathPrefix(`/api/golang`)
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middlewares:
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- name: strip-api-prefixes
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services:
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- kind: Service
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name: api-golang
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port: 8000
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scheme: http
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# apiVersion: traefik.containo.us/v1alpha1
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# kind: IngressRoute
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# metadata:
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# name: api-golang
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# namespace: demo-app
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# spec:
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# entryPoints:
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# - web
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# routes:
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# - kind: Rule
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# match: Host(`kubernetes-course.devopsdirective.com`) && PathPrefix(`/api/golang`)
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# middlewares:
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# - name: strip-api-prefixes
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# services:
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# - kind: Service
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# name: api-golang
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# port: 8000
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# scheme: http

‎07-deploying-demo-application/api-golang/Secret.yml

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name: api-golang-database-url
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namespace: demo-app
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stringData:
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DATABASE_URL: postgres://postgres:foobarbaz@postgres-postgresql.postgres.svc.cluster.local:5432/postgres
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DATABASE_URL: postgres://postgres:foobarbaz@postgres-postgresql.postgresx.svc.cluster.local:5432/postgres

‎07-deploying-demo-application/api-node/Deployment.yaml

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spec:
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containers:
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- name: api-node
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image: sidpalas/devops-directive-docker-course-api-node:foobarbaz
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image: sonthh98/devops-directive-docker-course-api-node:foobarbaz
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env:
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- name: PORT
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value: "3000"

‎07-deploying-demo-application/api-node/IngressRoute.yaml

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apiVersion: traefik.containo.us/v1alpha1
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kind: IngressRoute
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metadata:
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name: api-node
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namespace: demo-app
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spec:
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entryPoints:
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- web
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routes:
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- kind: Rule
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match: Host(`kubernetes-course.devopsdirective.com`) && PathPrefix(`/api/node`)
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middlewares:
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- name: strip-api-prefixes
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services:
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- kind: Service
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name: api-node
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port: 3000
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scheme: http
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# apiVersion: traefik.containo.us/v1alpha1
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# kind: IngressRoute
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# metadata:
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# name: api-node
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# namespace: demo-app
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# spec:
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# entryPoints:
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# - web
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# routes:
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# - kind: Rule
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# match: Host(`kubernetes-course.devopsdirective.com`) && PathPrefix(`/api/node`)
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# middlewares:
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# - name: strip-api-prefixes
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# services:
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# - kind: Service
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# name: api-node
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# port: 3000
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# scheme: http

‎07-deploying-demo-application/api-node/Secret.yaml

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name: api-node-database-url
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namespace: demo-app
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stringData:
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DATABASE_URL: postgres://postgres:foobarbaz@postgres-postgresql.postgres.svc.cluster.local:5432/postgres
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DATABASE_URL: postgres://postgres:foobarbaz@postgres-postgresql.postgresx.svc.cluster.local:5432/postgres

‎07-deploying-demo-application/client-react/ConfigMap.yaml

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add_header 'Content-Type' 'text/plain';
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return 200 "pong";
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}
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location /api/golang/ {
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proxy_set_header X-Forwarded-Host $host;
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proxy_set_header X-Forwarded-Server $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_http_version 1.1;
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rewrite ^/api-golang/(.*) /$1 break;
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proxy_pass http://api-golang:8000/;
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}
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location /api/node/ {
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proxy_set_header X-Forwarded-Host $host;
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proxy_set_header X-Forwarded-Server $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_http_version 1.1;
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rewrite ^/api/node/(.*) /$1 break;
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proxy_pass http://api-node:3000/;
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}
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location / {
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root /usr/share/nginx/html;
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index index.html index.htm;

‎07-deploying-demo-application/client-react/Deployment.yaml

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app: client-react-nginx
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spec:
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containers:
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- image: sidpalas/devops-directive-docker-course-client-react-nginx:foobarbaz
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- image: sonthh98/devops-directive-docker-course-client-react-nginx:foobarbaz
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name: client-react-nginx
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ports:
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- containerPort: 8080

‎07-deploying-demo-application/client-react/IngressRoute.yaml

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apiVersion: traefik.containo.us/v1alpha1
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kind: IngressRoute
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metadata:
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name: client-react-nginx
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namespace: demo-app
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spec:
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entryPoints:
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- web
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routes:
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- kind: Rule
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match: Host(`kubernetes-course.devopsdirective.com`)
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services:
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- kind: Service
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name: client-react-nginx
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port: 8080
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scheme: http
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# apiVersion: traefik.containo.us/v1alpha1
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# kind: IngressRoute
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# metadata:
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# name: client-react-nginx
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# namespace: demo-app
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# spec:
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# entryPoints:
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# - web
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# routes:
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# - kind: Rule
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# match: Host(`kubernetes-course.devopsdirective.com`)
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# services:
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# - kind: Service
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# name: client-react-nginx
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# port: 8080
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# scheme: http

‎07-deploying-demo-application/common/Middleware.yaml

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apiVersion: traefik.containo.us/v1alpha1
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kind: Middleware
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metadata:
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name: strip-api-prefixes
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namespace: demo-app
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spec:
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stripPrefix:
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forceSlash: false
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prefixes:
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- /api/node
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- /api/golang
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# apiVersion: traefik.containo.us/v1alpha1
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# kind: Middleware
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# metadata:
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# name: strip-api-prefixes
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# namespace: demo-app
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# spec:
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# stripPrefix:
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# forceSlash: false
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# prefixes:
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# - /api/node
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# - /api/golang

‎07-deploying-demo-application/common/Taskfile.yaml

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- kubectl apply -f Namespace.yaml
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- kubens demo-app
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deploy-traefik:
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desc: "Deploy Traefik using Helm"
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cmds:
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- helm repo add traefik https://traefik.github.io/charts
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- helm upgrade --install -n traefik --create-namespace traefik traefik/traefik --version 20.8.0
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# deploy-traefik:
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# desc: "Deploy Traefik using Helm"
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# cmds:
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# - helm repo add traefik https://traefik.github.io/charts
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# - helm upgrade --install -n traefik --create-namespace traefik traefik/traefik --version 20.8.0
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apply-traefik-middleware:
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desc: "Deploy Traefik middleware"
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cmds:
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- "kubectl apply -f Middleware.yaml"
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# apply-traefik-middleware:
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# desc: "Deploy Traefik middleware"
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# cmds:
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# - "kubectl apply -f Middleware.yaml"

‎07-deploying-demo-application/load-generator-python/ConfigMap.yaml

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name: load-generator-config
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namespace: demo-app
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data:
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API_URL: http://api-node.demo-app.svc.cluster.local:3000
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# API_URL: http://api-golang.demo-app.svc.cluster.local:8080
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# API_URL: http://api-node.demo-app.svc.cluster.local:3000
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API_URL: http://api-golang.demo-app.svc.cluster.local:8080
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DELAY_MS: "100"

‎07-deploying-demo-application/load-generator-python/Deployment.yaml

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spec:
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containers:
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- name: load-generator
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image: sidpalas/devops-directive-kubernetes-course-load-generator-python:foobarbaz
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image: sonthh98/devops-directive-kubernetes-course-load-generator-python:foobarbaz
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imagePullPolicy: Always
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env:
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- name: API_URL
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value: http://api-node.demo-app.svc.cluster.local:3000
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- name: DELAY_MS
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value: "500"
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# env:
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# - name: API_URL
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# value: http://api-node.demo-app.svc.cluster.local:3000
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# - name: DELAY_MS
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# value: "500"
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# Could alternatively move these to a configmap
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# envFrom:
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# - configMapRef:
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# name: load-generator-config
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envFrom:
29+
- configMapRef:
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name: load-generator-config
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resources:
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limits:
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memory: "50Mi"

‎07-deploying-demo-application/postgresql/Job.db-migrator.yaml

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spec:
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containers:
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- name: migrate
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image: sidpalas/devops-directive-kubernetes-course-db-migrator:foobarbaz
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image: sonthh98/devops-directive-kubernetes-course-db-migrator:foobarbaz
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args:
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- -path=/app/migrations
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- -database=$(DATABASE_URL)?sslmode=disable

‎07-deploying-demo-application/postgresql/Secret.db-password.yaml

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namespace: demo-app
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type: Opaque
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stringData:
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DATABASE_URL: postgres://postgres:[email protected]:5432/postgres
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DATABASE_URL: postgres://postgres:[email protected]:5432/postgres
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# cat /etc/resolv.conf in Postgres pod to get the cluster DNS suffix

‎07-deploying-demo-application/postgresql/Taskfile.yaml

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- helm repo add bitnami https://charts.bitnami.com/bitnami
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- |
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helm upgrade --install \
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-n postgres \
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-n postgresx \
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postgres bitnami/postgresql \
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--set auth.postgresPassword=foobarbaz \
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--version 15.3.2 \

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