kubectl get namespaces

• kubectl get namespaces
• kubectl get ns -o=name
• kubectl get pods -A | cut -d" " -f1 | grep -v NAMESPACE | sort | uniq | wc -l

kubectl get ns  --no-headers -o custom-columns=":metadata.name"

EKS

kubectl get namespaces
NAME              STATUS   AGE
default           Active   44h
kube-node-lease   Active   44h
kube-public       Active   44h
kube-system       Active   44h

EKS + Kots

NAME              STATUS   AGE
default           Active   28d
yourapp-kots     Active   28d
kube-node-lease   Active   28d
kube-public       Active   28d
kube-system       Active   28d

Minikube

kubectl get namespaces
NAME                   STATUS   AGE
default                Active   3d21h
kube-node-lease        Active   3d21h
kube-public            Active   3d21h
kube-system            Active   3d21h
kubernetes-dashboard   Active   3d21h

AKS

app-routing-system

Rancher

kubectl get ns | grep cattle
cattle-dashboards             Active   7d7h
cattle-fleet-system           Active   7d20h
cattle-impersonation-system   Active   7d20h
cattle-monitoring-system      Active   4h33m
cattle-system                 Active   7d20h

kubectl get namespaces
NAME              STATUS    AGE
default           Active   24h
kube-node-lease   Active   24h
kube-public       Active   24h
kube-system       Active   24h

kubectl delete namespaces --all

Related

• kubectl get all --all-namespaces
• kubectl create namespace

See also

• kubectl get: [ all | componentstatus | pods | apiservices | events | event| nodes | replicaset | services | svc | namespaces| hpa | secret | deployments | serviceaccounts | endpoints | daemonset | networkpolicy ], kubectl get -h
• nsenter, Kubernetes namespaces: kubectl get namespaces, kube-system namespace, --namespace