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Questions tagged [kubernetes]

Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions. Using the concepts of "labels" and "pods", it groups the containers which make up an application into logical units for easy management and discovery.

Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions. Using the concepts of "labels" and "pods", it groups the containers which make up an application into logical units for easy management and discovery.

For more details, visit the official Kubernetes page.

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kubernetes control plane goes down often

I did setup a kubernetes cluster using kubeadm. Somehow kubectl refuses to connect to that cluster in non-periodic occasions with an error message as in the following; The connection to the server 192.168.1.3:6443 was refused - did you specify the…
atg
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Error running PostgreSQL Deployment in Kubernetes: "No such file or directory" for data directory

I am trying to deploy a PostgreSQL database using Kubernetes and encountered an error related to the data directory. Below is my YAML configuration for the Deployment: apiVersion: apps/v1 kind: Deployment metadata: name: db spec: replicas: 1 …
Ed Black
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vxlan error in Flannel logs after Kubernetes cluster creation

I've create a Kubernetes Cluster with 3 worker nodes and am experiencing issues with Flannal in a constant CrashLoopBackoff: kube-flannel kube-flannel-ds-7lc76 0/1 CrashLoopBackOff 7 (4m52s ago) 15m kube-flannel …
Daemon Jester
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Unable to join nodes to kubernetes cluster; kubelet error preventing kubeadm join suspicion

I've created a new cluster on 10.0.0.100 and after a few tweaks managed to get all pods up and running: NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS…
Daemon Jester
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Why are changes not synced to replica instances on Kubegres Cluster?

I have set up a Postgres on Kubernetes cluster with Kubegres with 3 instances - 1 master and 2 replicas. Now, I am facing the problem that the replication doesn't really work. What is synced, is when databased are newly created. What is not…
xm22
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AKS Kubectl command doesn't return completed pods

I am using AKS with Kubernetes v1.25.6 and I have started to see a number of pods with a Completed status. From what I understand these are generated when an exit 0 code is returned on the process the pod is running, which for the pods in question…
David Hirst
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High CPU usage of kube-controller and kube-apiserver when increasing nodes of ECK node sets

I am trying to run an Elastic Cluster on Kubernetes (Minikube). It basically works, but only with one server per node. As soon as I try to set up > 1 node per node set, the cpu usage…
xm22
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Calico Node and Kube Proxy crashed permanently on a new node

I have a Kubernetes cluster in version 1.25.0 with some nodes (Ubuntu server machines). I use calico from https://raw.githubusercontent.com/projectcalico/calico/v3.26.1/manifests/calico.yaml. Now I am adding a new node. The node is completely…
Tamino Elgert
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How can I know request waiting time in Nginx Ingress Controller?

We use Kubernetes with Nginx Ingress Controller to run our platform with various backend services. We also use New Relic (& Prometheus, Grafana) for our Observability dashboards & alerts. Nginx Ingress Controller is the entrypoint for all our…
Raman Kishore
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Kubernetes multi cluster dashboard

I need to manage a federation of clusters (KubeFed), so I was wondering if it's possible to deploy Lens Dashboard within the cluster? Otherwise is there any alternative dashboad with multi cluster support within cluster?
alexHX12
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Kubernets: what exactly needs to be installed on each server/node and how?

I have coded AWS instances that can serve as nodes where my containers will run. So by default each of these instances have docker installed. This part is working fine. Eventually i would like to have all these containers managed by Kubernetes -…
mike01010
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prometheus-operator when configuring alertmanager config for PagerDuty

Have next issue: When try to set up alertmanager configuration over CRD, get wrong configuration on pod. Problem look like: - routing_key: | ***** routing_key parameter after all CD use multiline string type, and it crash configuration -…
Georgy Potapov
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GKE: metric server crashlooping (crosspost from r/googlecloud)

I have several (<10) gke clusters, all but one are all in the same condition and I can't figure out what and why is it happening. I hope to find someone that managed to solve the same issue :) Some time ago, i noticed that our HPA stopped working,…
Luca Gervasi
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'vm.max_map_count is too low' in kubernetes mongodb client

This is how I'm running a mongodb client in my kubernetes cluster: kind: Pod apiVersion: v1 metadata: name: mongodb-client namespace: backup spec: containers: - name: mongodb-client image: mongo:6.0.6 command: ["tail", "-f",…
user3142695
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Unable to exec or to get pod logs: Tunnel Closed

We are experiencing some issues with our GKE cluster. Here are the error messages we encountered: When running the command kubectl logs -f pod_name, we received the following error: "Error from server: Get…
Abdelmalek Awayni
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