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DevOps & observability · #kubernetes
A ConfigMap is an API object used to store non-confidential data in key-value pairs. Pods can consume ConfigMaps as environment variables, command-line arguments, or as configuration files in a volume . A ConfigMap allows you to decouple environment-specific configuration from your container images
Started · 02 Aug 2020, 00:43 UTC
Garbage collection is a collective term for the various mechanisms Kubernetes uses to clean up cluster resources. This allows the clean up of resources like the following: Terminated pods Completed Jobs Objects without owner references Unused containers and container images Dynamically provisioned P
Feature state: Beta since Kubernetes v1.11 Cloud infrastructure technologies let you run Kubernetes on public, private, and hybrid clouds. Kubernetes believes in automated, API-driven infrastructure without tight coupling between components. The cloud-controller-manager is a Kubernetes control plane
My project includes a Dockerfile to build an image. I've made modifications to that Dockerfile and want to see if it works. So i closed my program and listed all docker images in powershell using docker image ls -a . I deletetd all unused images using docker rmi -f $(docker images -a -q) and docker image prune -a . But my image keeps not getting deleted, but
Why do I need 3 different kind of probes in kubernetes: startupProbe readinessProbe livenessProbe There are some questions ( k8s - livenessProbe vs readinessProbe , Setting up a readiness, liveness or startup probe ) and articles about this topic. But this is not so clear: Why do I need 3 different kind of probes? What are the use cases? What are the best pr
I have deployment and a replica set in Kubernetes that are failing to create a pod. I've tried kubectl describe deployment deployment-name and kubectl describe replicaset replicaset-name And they both say Conditions: Type Status Reason ---- ------ ------ ReplicaFailure True FailedCreate Events: <none> All of the troubleshooting guides I've seen rely on
Feature state: Stable since Kubernetes v1.29 Controlling the behavior of the Kubernetes API server in an overload situation is a key task for cluster administrators. The kube-apiserver has some controls available (i.e. the --max-requests-inflight and --max-mutating-requests-inflight command-line fla
Application logs can help you understand what is happening inside your application. The logs are particularly useful for debugging problems and monitoring cluster activity. Most modern applications have some kind of logging mechanism. Likewise, container engines are designed to support logging. The
I have used kubectl create serviceaccount sa1 to create service account. Then I used kubectl get serviceaccount sa1 -oyaml command to get service account info. But it returns as below. apiVersion: v1 kind: ServiceAccount metadata: creationTimestamp: "2022-05-16T08:03:50Z" name: sa1 namespace: default resourceVersion: "19651" uid: fdddacba-be9d-4e77-a849-95ca
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