Section 2: Core concepts (26-29)

It is a way to organize and isolate resources within a cluster.

• container

• cluster

• nodes

• namespace

It helps to prevent conflicts and organize resources more neatly, allowing different teams or applications to work independently within the same cluster.

• container

• cluster

• nodes

• namespace

The default namespace is named (a)   . It’s created automatically when the cluster is setup.

Kubernetes creates another namespace named (a)   where it creates and isolates a set of resources such as PODs or services for internal purposes such as networking, DNS service.

A third namespace named (a)   is created with the resources that should be public for all the users.

Type the full command to list the PODs of the “kube-system” namespace.

(a)  

Type the full command to create a new POD using the "pod-definition.yml" file in the namespace named as “dev”.

(a)  

What are two ways to create a namespace in Kubernetes?

• Running the command: kubectl create namespace dev

• Creating a namespace definition file

• Creating a POD namespace

• Running the command: kubectl create --namespace=dev

Type the full command to set the namespace named as “dev” as the default.

(a)  

Type the full command to list all the PODs of all the namespaces in the cluster.

(a)