Production-AKS-Azure-Cli

shell.azure.com

https://azure.github.io/Cloud-Native/cnny-2023/fundamentals-day-4/

az login

Ref:- https://learn.microsoft.com/en-us/azure/aks/learn/quick-kubernetes-deploy-cli

Create a resource group:

az group create --name myResourceGroup --location eastus

*Create a AKS cluster.
az aks create --resource-group myResourceGroup --name myAKSCluster --enable-managed-identity --node-count 1 --generate-ssh-keys

**Connect to the cluster
az aks get-credentials --resource-group myResourceGroup --name myAKSCluster

Sample:
raj [ ~ ]$ az aks get-credentials --resource-group myResourceGroup --name myAKSCluster
Merged "myAKSCluster" as current context in /home/raj/.kube/config
raj [ ~ ]$ kubectl get nodes
NAME                                STATUS   ROLES   AGE   VERSION
aks-nodepool1-11856392-vmss000000   Ready    agent   12m   v1.27.9

** delete the cluster
az group delete --name myResourceGroup --yes --no-wait

====================Storage============================================

By default AKS gives below sc's, So we don't need to create our own storage class

The default storage class looks like below.

Refer more about standard_lrs in below git.

Ref:-https://github.com/shivscloud/azure-k8-manifest/blob/main/storage-pvc.yml

Before applying pvc we don't have any pvc in cluster

wget https://github.com/shivscloud/azure-k8-manifest/blob/main/storage-pvc.yml
kubectl apply -f storage-pvc

raj [ ~ ]$ kubectl apply -f storage.yml 

storageclass.storage.k8s.io/managed-premium-retain-sc created

persistentvolumeclaim/azure-managed-disk-pvc created

configmap/usermanagement-dbcreation-script created

deployment.apps/mysql created

service/mysql created

After changes we are able to see the pvc's

==================A Simple Flask docker application migrating from docker to kuberentes====

wORKING CODE

https://github.com/shivscloud/azure-k8-manifest/blob/main/tested-flask.yml

kubectl logs postgres-deployment-6f6687c89f-bs55d -c postgres-container

 kubectl exec -it postgres-deployment-654cd6cf9-w964b  -- /bin/bash

psql -U raj -d raj_bzr8

=====================Storage Class================================

https://kubernetes.io/docs/concepts/storage/storage-classes/