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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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Can connect to kafka, but cannot consume

I have a 3 broker kafka cluster set up in an AWS VPC with kubernetes, I am using the https://github.com/Yolean/kubernetes-kafka repo for this. I'm having the strange issue of being able to connect internally, produce and consume messages fine. When…
Daniel Cull
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Kubernetes CrashLoopBackOff after pod create pulling image from Docker Hub

On a Digital Ocean Kubernetes Cluster I am trying to create a pod using a Docker image pulled from Docker Hub but it keeps failing with CrashLoopBackOff and restarting. The image is a Rails app in a docker container and is quite large. I suspect…
markhorrocks
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Container runtime/kubelet failures on EKS cluster nodes

I'm currently working with a Kubernetes cluster, hosted on AWS with EKS, that is encountering strange (to me) failures. Our nodes (instance type c5.2xlarge, AMI ami-0f54a2f7d2e9c88b3/amazon-eks-node-v25) run along until, with no apparent change in…
cwh
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Kubernetes and MCU, is it possible?

I'm new to Kubernetes and amazed by the potential, but I'm having quite a hard time to set my mind and think a solution to this: I'm trying to set a WebRTC MCU (Multipoint Conferencing Unit), all peers connect to a single server, server combine…
Cristian C.
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Creating a NAT gateway with Terraform fails with an error

I'm running a private GKE cluster and want to add a NAT Gateway so I can create firewall rules from requests coming from the cluster (by default, the public IP's for all nodes are ephemeral, thus hard to keep track of). I'm trying to follow the…
ButterDog
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Can Kubernetes prioritize nodes when scaling?

I have a Kubernetes cluster on AWS set up with KubeAWS. We're using some sensitive third-party integrations that require white-listed IP addresses in their firewall. Now, what I've done is that I've registered the IP addresses of the nodes with the…
Helge Talvik Söderström
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error: unable to recognize "deployment.yaml": no matches for /, Kind=Deployment

I wrote a Kubernetes Deployment manifest: apiVersion: v1 kind: Deployment metadata: name: test-persistence spec: selector: matchLabels: name: test-persistence template: metadata: labels: name: test-persistence …
Elouan Keryell-Even
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How to get AWS public IP CIDR range of a VPC

I have a VPC running on AWS which was created using kops, and the databases are running on mongo-atlas using GCP as a cloud provider. The mongo database servers are open to the world, what I'm trying to do is find a way to set up one IP through with…
gagan trivedi
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Certificate validation ignoring common name and only checking alternates?

I have a certificate, that has CN=*.some.domain and then alternate names DNS:*.sub1.some.domain, DNS:*.sub2.some.domain (2 more like this). I provided the certificate to an nginx-ingress in kubernetes, which serves host.some.domain. And it is giving…
Jan Hudec
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Helm i/o timeout kubernetes

Trying to use helm on my kubernetes cluster. helm init went fine but trying to install or just helm list gives this error. $ helm list Error: Get https://10.96.0.1:443/api/v1/namespaces/kube-system/configmaps?labelSelector=OWNER%!D(MISSING)TILLER:…
Gab
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Ingress returns 'default backend - 404' on Minikube

I'm trying to set up a very simple Kubernetes cluster with frontend, backend and db services. Here is part of the Frontend service definition file: apiVersion: v1 kind: Service metadata: name: frontend labels: tier: frontend spec: …
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vm.max_map_count problems on GKE ElasticSearch StatefulSet

A problem appeared on working ElasticSearch cluster on GKE. Nodes with "data" roles began to crash unexpectedly with an error: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144] bootstrap checks failed Of…
Victor Bessonov
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How to connect to a third party VPN from Google Cloud Platform?

Requirements I am trying to connect to a third party VPN from my back end on Google Cloud Platform. Since my IP has to be whitelisted by the third party, the source IP for all requests must be a single static IP address. My plan so…
Ismail Khan
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Kubernetes GCE Ingress cannot find services

My yaml files for various deployments, services and ingresses have created a working setup before. I tried fixing a small issue with an ingress and can't get back to a working state. My pods start without error and the services are up and running.…
Archonic
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Current status of HorizontalPodAutoscaling on Amazon EKS

Previously asked question I am also using EKS and wanted to know if yet they have solved this or is there a way around without using kops. Unable to comment on the same question because of low credits, hence posting this as a new question.
Ankur garg
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