NodePort:-
1. A NodePort service exposes the service
on the IP of each node at a static port. A ClusterIP service is created
automatically to route the traffic to the NodePort service. Users can
communicate with the service from the outside by requesting
<NodeIP>:<NodePort>
2. You can only use ports 30000–32767.
3. You can only have one service per port.
4. If you create a NodePort, then the endpoint service will also be created.
i) The node
IP will be connected to nodeport 30010 and the 30010 port will be redirected to
port 8081.
ii) 8081
will redirect to the port 80 endpoint.
# kubectl
create deployment nodeport-deployment --image=nginx --replicas=2
# kubectl
get deploy -o wide
# vim
nodeport.yaml
apiVersion:
v1
kind:
Service
metadata:
name: nginx-service
spec:
type: NodePort
selector:
app: nodeport-deployment
ports:
- protocol: TCP
port: 8081
targetPort: 80
nodePort: 30010
for svc
# kubectl
get svc nginx-service -o wide
for pods
# kubectl
get pods --show-labels
# kubectl
get pods -o wide
Test NodePort
with NodeIP.
For
ClusterIP with endpoint Port.
