We need to note that not all object in Kubernetes need to be in namespace, like nodes and persistentVolumes need not to be in namespace as those are low-level resources. To get the list of resources which are in a namespace and which are not, use below commands: kubectl api-resources...
Kubernetes allows you to define and switch between multiple contexts. Each context includes the cluster, user, and namespace information. You can switch between contexts to change both the namespace and cluster. To list all available contexts, use: kubectl config get-contexts Output: CURRENT NAME ...
A Kubernetes namespace isolates specific system resources usually visible to all processes. Each namespace has its own services, pods, and deployments in the cluster. A namespace inKubernetesis essentially the same as a project inOpenShift. These days, most products are containerized and can easi...
Kubernetes namespaces are a central part of how we structure, deploy, and manage containers today. However, namespaces are not a new concept; in fact, Linux namespaces were introduced in 2002 and designed to separate and group individual processes and ca
Each service in Kubernetes has a unique DNS name. When you create a service, Kubernetes creates a DNS record for that service. The DNS record contains the IP address of the service and the port number. Kubernetes uses this information to route traffic to the service. The DNS name of a ...
Each namespace has its namespace ID (NSID) that identifies it. Processes can join an existing namespace or create a new one using system calls such as clone and unshare. Namespaces are commonly used in containerization technologies such as Docker and Kubernetes to provide isolated environments ...
Ideally, Kubernetes software should be able to back up specific applications, specific groups of applications, as well as the entire Kubernetes namespace. That’s not to say that it is completely different from the regular backup process – Kubernetes backups can also benefit greatly from some ...
Understanding Kubernetes architecture is not an easy task. The system has many moving parts that need to be understood in order for you to get a grip on what's happening beneath the surface. While learning architecture, you will come across the concepts we discuss in the prerequisites. ...
kubectlgetpods Remember to add the--namespaceflag when your Pods live outside the default namespace: kubectl --namespace my-namespacegetpods Adding a temporary alias to your shell is a good way to shorten this step, helping you run several commands against the same namespace: ...
To deploy, run: helm install helm-opensearch opensearch/opensearch The output should look like this: Watch the cluster members: kubectl get pods --namespace=default-l app.kubernetes.io/component=opensearch-cluster-master -w Usage instructions ...