Kubernetes -03- Terminology & Deployment

Kubernetes Terminology

  • Nodes
    • Hosts that run Kubernetes applications
  • Containers
    • Units of packaging
  • Pods
    • Units of deployment
  • Replication Controller
    • Ensures availability and scalability
  • Labels
    • Key-Value pairs for identification
  • Services
    • Collection of pods exposed as an endpoint

Simple Deployment

Deployment->Service

kubectl run my-web –image=nginx –port=80

kubectl get deployments

devpc:~ apocoder$ kubectl run my-web –image=nginx –port=80
deployment.apps “my-web” created
devpc:~ apocoder$ kubectl get deployments
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
my-web 1 1 1 1 1m
devpc:~ apocoder$

devpc:~ apocoder$ kubectl get pods
NAME READY STATUS RESTARTS AGE
my-web-857d97b7cd-k754z 1/1 Running 0 2m

kubectl get svc

PORT=$(kubectl get svc my-web -o go-template='{{(index .spec.ports 0).nodePort}}’)

echo $PORT

30890

minikube ip

192.168.99.101

then visit the ->  http://192.168.99.101:30890

minikube dashboard

Perfect! You successfully deployed your nginx!

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