k8s commands 03

kubectl run nginx-pod --image=nginx:alpine

kubectl run redis --image=redis:alpine --dry-run=client -o=yaml > redis-pod.yaml

kubectl expose pod redis --port=6379 --name redis-service

kubectl create deployment webapp --image=nginx --replicas=3

kubectl run custom-nginx --image=nginx --port=8080

kubectl create deployment redis-deploy --image redis --namespace dev-ns --replicas=2

kubectl run httpd --image=httpd:alpine --port=80 --expose

 

kubectl run nginx --image=nginx

kubectl run nginx --image=nginx --dry-run=client -o yaml

kubectl create deployment --image=nginx nginx

kubectl create deployment --image=nginx nginx --dry-run=client -o yaml

kubectl create deployment nginx --image=nginx --replicas=4

kubectl scale deployment nginx --replicas=4

kubectl create deployment nginx --image=nginx --dry-run=client -o yaml > nginx-deployment.yaml

 

Create a Service named redis-service of type ClusterIP to expose pod redis on port 6379

kubeclt expose pod redis --port=6379 --name redis-service --dry-run=client -o yaml

(THis will automatically use the pod's labels as selectors)

 

kubectl create service clusterip redis --tcp=6379:6379 --dry-run=client -o yaml

(This will not use the pods labels as selectors, instead it will assume selectors as app=redis. You cannot pass in selectors as an option. So it does not work very well if your pod has a differenct label set. So generate the file and modify the selectors before creating the service)

 

Create a Service name nginx of type NodePort to expose pod nginx's port 80 on port 30080 on the nodes

kubectl expose pod nginx --type=-NodePort --port=80 --name=nginx-service --dry-run=client o yaml

(This will automatically use the pod's labels as selectors, but cannot specify the node port)

 

kubectl create service nodeport nginx --tcp=80:80 --node-port=30080 --dry-run=client o yaml

(This will not use the pods labels as selectors)