Namespaces

default namespace

kubernetes default uses namespace named default , kubesystem and kubepublic

when service is created dns name automaticly assigned resources in namespace can refer by its name

.connect("db-service")

to connect database in another namspace

.connect("db-service.namespace.service.domain.domainlocal")

kubectl get pods --namespace=anothername

creating pods in namespace

kubectl create -f pod.yml --namespace=dev or add namespace under metadata section in yml

creating namespaces

apiVersion: v1
kind: Namespace
metadata:
  name: dev

kubectl create -f namespace-dev.yaml kubectl create namespace dev

set default namespace for command

kubectl config set-context $(kubectl config current-context) --namespace=dev kubectl get pods

show pods in all namespaces

kubectl get pods --all-namespaces

limit resources in namespace using ResourceQuota

`yml `apiVersion: v1 kind: ResourceQuota metadata: name: compute-quota namespace: dev spec: hard: pods: "10" requests.cpu: "4" requests.memory: 5Gi limits.cpu: "10" limits.memory: 10Gi

kubectl create -f quota.yml