In Kubernetes, both Deployments and ReplicaSets are pivotal concepts that help manage the lifecycle of your applications by ensuring that a specified number of pod replicas are running at any given time. Understanding the differences between a Deployment and a ReplicaSet is crucial for effective Kubernetes management. ReplicaSet – maintain a stable set of replica …
DevOps
When a Kubernetes pod is in a Pending state, it means that the pod has been accepted by the cluster, but it cannot be scheduled to run on any node. Several reasons could cause this, ranging from insufficient resources to scheduling constraints. 8 Reasons Why Kubernetes pod is in a Pending state Here’s a systematic …
To list all the containers running in a Kubernetes cluster, you would typically start by listing all Pods, as containers are encapsulated within Pods in Kubernetes. Each Pod can run one or more containers. Here’s how you can list all containers across all namespaces in a Kubernetes cluster: Using kubectl to list all the containers …
Kubernetes, or K8s, stands as a pivotal force in the contemporary landscape of container orchestration, offering a robust platform for deploying, scaling, and managing containerized applications. A critical aspect of Kubernetes’ functionality revolves around resource management, particularly in terms of CPU and memory allocations for the containers within pods. Understanding how Kubernetes interprets and utilizes …
Identifying the busiest pod in a Kubernetes cluster, in terms of resource usage (CPU and memory), involves a few steps. There isn’t a direct kubectl command that gives you this information outright, but you can use a combination of commands and tools available in Kubernetes to get the insights you need. Here’s how you can …
In Kubernetes, when configuring a Service to expose your applications, you’ll encounter three key port concepts: port, targetPort, and NodePort. Understanding the distinctions and relationships between these ports is crucial for effectively managing access to your applications running within Pods. port Definition: The port field in a Service specification defines the port on which the …
In Kubernetes, when defining a Service to expose your application, the concept of targetPort plays a crucial role in routing incoming traffic to the correct destination within your Pods. What is targetPort? Definition: targetPort is a field in the Service definition that specifies the port on the Pod containers to which the traffic should be …
Minikube is a tool that simplifies the process of running Kubernetes locally, making it easier for developers to develop and test Kubernetes applications. One of the key concepts in Minikube is the use of “drivers” to set up and manage the Kubernetes cluster’s virtual environment. Understanding Minikube drivers is crucial for configuring Minikube to suit …
In a Kubernetes environment, understanding the different types of IP addresses and how they are used is crucial for managing communication within and outside the cluster. understanding different types of IP addresses in Kubernetes To illustrate these concepts, let’s consider a scenario with a Kubernetes cluster consisting of 3 nodes, 3 Pods, each part of …
Kubernetes, the orchestration system for managing containerized applications, offers a variety of service types to ensure your applications are accessible and communicate efficiently. Each service type caters to specific use cases, balancing accessibility with resource allocation. Let’s delve into the primary Kubernetes Service types—ClusterIP, NodePort, LoadBalancer, and cloud provider-specific LoadBalancers—to understand their use cases and …