I am trying to define the namespace name when executing the kubectl create deployment command?
This is what I tried:
kubectl create deployment test --image=banu/image1 namespace=test
and this doesn't work.
And I want to expose this deployment using a ClusterIP service within the cluster itself for that given namespace How can I do that using kubectl command line?
You can specify either -n or --namespace options.
kubectl create deployment test --image=nginx --namespace default --dry-run -o yaml and see result deployment yaml.
Using kubectl run
kubectl run test --namespace test --image nginx --port 9090 --dry-run -o yaml
containerPort to 8080 in this deployment? is it like --containerPort=8080 at the end of the above command?
create deployment. Use kubectl run instead.--dry-run here?--help to your kubectlkubectl create ns test
ns stands for namespace, so with kubectl you say you want to create namespace with name test
kubectl create deployment test --image=banu/image1 -n test
Where flag -n stands for namespace, that way you say to Kubernetes that all resources related to that deployment will be under the test namespace
kubectl get all -n test
--namespace and -n is the same things
containerPort to 8080 in this deployment? is it like --containerPort=8080 at the end of the above command?
should edit the yaml file with containerPort manually and we can't set it using the one line of command?Use -n test instead of namespace=test
Sample with nginx image:
$ kubectl create deployment nginx --image=nginx -n test
deployment.apps/nginx created
$ kubectl get deploy -n test
NAME READY UP-TO-DATE AVAILABLE AGE
nginx 1/1 1 1 8s
In second case you need to create service and define labels from deployment.
You can find correct labels by runnig something like:
kubectl -n test describe deploy test |grep Labels:
and apply service like:
apiVersion: v1
kind: Service
metadata:
name: test-svc
namespace: test
spec:
ports:
- name: test
port: 80 # Change this port
protocol: TCP
type: ClusterIP
selector:
# Here you need to define output from previous step
containerPort to 8080 in this deployment? is it like --containerPort=8080 at the end of the above command?
kubectl -n test edit deploy test and also change port in service that I've posted before to 8080. Also please use correct labels for selectorkubectl commands without really writing a yaml?edit it is a manual work. I need to do this just with a single command of line and an enter.