raja1090/k8s-webinar-configmaps-secrets

K8s-Webinar-ConfigMaps-Secrets

Demo1-ConfigMaps:

Demonstrates use of ConfigMaps for injecting configs via CLI VAR, env VAR and File System

Go to directory:

cd  Deploy-Kubernetes/Demo1-ConfigMaps

Deploy ConfigMaps:

kubectl create -f configmap.yml

Deploy POD pod-cmd (injection via CLI VAR):

kubectl create -f pod-cmd.yml

Check:

kubectl logs test-pod-cmd

Deploy POD pod-env (injection via ENV VAR):

kubectl create -f pod-env.yml

Check:

kubectl exec -ti test-pod-env sh
env

Deploy POD pod-vol (injection via File System):

kubectl create -f pod-vol.yml

Check:

kubectl exec -ti test-pod-vol sh
cd /etc/config
more log.level
more log.location 

Demo2-ConfigMaps:

This examples shows how to inject Redis config using Configmap. Injection is done thru file system.

Go to directory:

cd  Deploy-Kubernetes/Demo2-ConfigMaps

Create ConfigMap using Interactive mode:

kubectl create configmap example-redis-config --from-file=redis-config
kubectl get cm

Create Redis POD:

kubectl create -f redis.yml

Check:

kubectl exec -ti redis sh
 redis-cli
  CONFIG GET maxmemory
  CONFIG GET maxmemory-policy

Demo3-Secrets:

This examples shows how to inject Secrets like username and password to Redis using File System.

Go to directory:

cd  Deploy-Kubernetes/Demo3-Secrets

Create Secrets:

kubectl create secret generic dbsecret --from-file=./username.txt --from-file=./password.txt

Create POD using the Secrets inside:

kubectl create -f pod-secret.yml

Result

kubectl exec -ti secret-pod sh
 cd /etc/foo
 more password.txt
 more username.txt

Demo4-Secrets

This examples shows how to inject Secrets like username and password to Redis using ENV VAR.

Go to directory:

cd  Deploy-Kubernetes/Demo4-Secrets

Create Secrets:

kubectl create -f my-secret.yml

Create POD using the Secrets inside:

kubectl create -f pod-secret-env.yml 

Result:

kubectl exec -ti secret-env-pod sh
 env

You should be able to see: SECRET_USERNAME=admin SECRET_PASSWORD=mypassword