Kubernetes Resources

Now you have learned many Kubernetes recourses, in this exercise, you will deploy the following resources using the kubectl command.

• a namespace

• • name: default
• • label: tier: test

• a deployment:

• • image: buinhattruong/techtrends:v1.0.0
• • name: techtrends
• • namespace: default
• • replicas: 3
• • labels: app: techtrends, tag: techtrends

• a service:

• • expose the above deployment on port 8111
• • namespace: default

• a configmap:

• • name: techtrends
• • containing key-value pair: version=techtrends
• • namespace: default

Below is a snippet creating a namespace and labeling it, a deployment, a service, and a configmap using the kubectl operations.

# create the namespace 
# note: label option is not available with `kubectl create`
kubectl create ns default

# label the namespace
kubectl label ns default tier=test

# create a techtrends Deployment in namespace `default`
kubectl create deploy techtrends --image=buinhattruong/techtrends:v1.0.0 -n default

# create the techtrends deployment 
kubectl create deploy techtrends --image=buinhattruong/techtrends:v1.0.0  --replicas=3 --namespace default

# label the deployment
kubectl label deploy techtrends app=techtrends tag=techtrends --namespace default

# expose the nginx-alpine deployment, which will create a service
kubectl expose deployment techtrends --port=8111 --namespace default

# create a config map
kubectl create configmap techtrends --from-literal=version=techtrends --namespace default

Spoiler alert: in the next section, you will learn and practice how to deploy Kubernetes resources using a different approach.