Before Kubernetes version 1.6, theOnDeleteupdate strategy was the only way to update pods managed by a DaemonSet. This approach required users to delete each pod manually before the DaemonSet could create a new pod using the new configuration. Recent Kubernetes versions userolling updatesby default....
From a learning perspective, it makes sense to use a single control plane in your test environment as you explore Kubernetes functionality. However, in production and cloud deployments such as Azure Kubernetes Service (AKS), you find that the preferred configuration is a high-availability deployment...
The 503 Service Unavailable error is an HTTP status code that indicates the server is temporarily unavailable and cannot serve the client request. In a web server, this means the server is overloaded or undergoing maintenance. In Kubernetes, it means a Service tried to route a request to a po...
Kubernetes has a notion ofsecrets, which is another good solution. Those secrets can be loaded as a file on the application's filesystem: a Java program can then read that file at startup time, to access those secrets. Tools like the Spring Frameworks even have standard s...
A 502 Bad Gateway error is an5xx server errorthat indicates a server received an invalid response from a proxy or gateway server. In Kubernetes, this can happen when a client attempts to access an application deployed within a pod, but one of the servers responsible for relaying the request—...
Hello. I want to add some extra prometheus alerting rules using helm. I can add this rules manually via prometheus or grafana UI but this method doesn't suit for me. So, the question is: how can I add/update prometheus alerting rules in kubernetes cluster using local yaml files? I ...
1. Accessing the Kubernetes cluster Use the command-line tool, also known as kubectl, to find the IP address of a Kubernetes Pod. This tool fetches Pod information from the Kubernetes API to let you run Kubernetes commands to deploy applications, inspect and manage cluster resources, and...
DA Kube — Selenium Grid using Kubernetes, Docker, Helm and Traefik Distributed Automation: How to run 1000 UI Automation Tests in 5mins Integration Testing in React How to Earn a Black Belt in GraphQL Testing How to: Emulate Amazon Simple Queue Service (SQS) for Testing Purposes Fixing Flaky...
kubectl.kubernetes.io/last-applied-configuration: | {"apiVersion":"infrastructure.cluster.x-k8s.io/v1beta1","kind":"VSphereMachineTemplate","metadata":{"annotations":{"vmTemplateMoid":"vm-79"},"name":"wld-kubevip-control-plane","namespace":"default"},"spec":{"template":{"spec":{"clo...
While a pod is the smallest unit in the Kubernetes object model, it can hold one or more containers, and these containers share the same network namespace, meaning they can communicate with each other using localhost. Pods also have shared storage volumes, so all containers in a pod can ...