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Questions tagged [kube-dns]

209 questions
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Accessing Pod through kubedns without expose as service

I am trying to test inter-pod communication without expose as service. I have read that a pod does have FQDN in kubedns. kubernetes doc Its default should be (A…
Maxi Wu
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I create a single master cluster with kubeadm, everything is fine but CoreDNS didn't work

I create a single master cluster with kubeadm, according to doc, I did it like this: kubeadm init --pod-network-cidr=172.20.0.0/16 kubectl apply -f rbac-kdd.yaml kubectl apply -f calico.yml Now, everything is fine, all pods and services are…
Juey
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Kubernetes readness cannot visit service by DNS

I deploy Elastic Search and Fluentd in same namespace test, and write below config to ensure Fluentd can visit Elastic serach: livenessProbe: failureThreshold: 5 httpGet: host: elasticsearch-logging …
daixiang0
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kube-dns. High Availability. Error handling in kuberntes

I have a kubernetes cluster with several nodes. I have kube-dns running in 3 nodes. The issue I'm having is that if 1 of those 3 nodes goes down the requests between my pods/containers start to fail more or less 1 of 3 times. This is because when…
Jxadro
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unable to chage type: ClusterIP to type: LoadBalancer for kube-dns in kubernetes

When I run kubectl get svc -n kube-system it tells me: NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kube-dns ClusterIP xx.xx.xx.xx 53/UDP,53/TCP 13h But when I try to kubectl edit svc/kube-dns -n…
Srinivasa Reddy
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External DNS in Kubernetes involving istio out of nowhere from version 1.11

Since today in version 1.11 of externaldns installed via helm i got this problem. The k8s provider is rancher and it's fresh, without anything else on it. The config is as per documentation. Please help. time="2018-12-05T15:08:00Z"…
qubsup
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Kubernetes: no such host for modify hostname slave

Version: kubeadm and kubectl 1.12 I get this error when I change the hostname of one of the Kubernetes slaves. The error I get from the metric service: dial tcp: lookup ops-kube-slave-dev-1 on 10.96.0.10:53: no such host This IP is not the public…
pioupiou
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Custom URL name for internal services

I have a Kubernetes cluster. Some internal services (such as Kubernetes Dashboard) are only accessible via an OpenVPN instance I set up. Per default kube-dns resolves services like: http://{service-name}.{namespace-name}.svc.cluster.local For…
Hedge
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Coredns couldn't reach to Host Nameserver

I've created a kubernetes cluster from scratch as the directions of Kelsey Hightower. As I checked, everything works without any error but after I've deployed my first application, I figured out my application couldn't resolve the DNSes. I've…
Muhammet Arslan
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Can't ping other pods by hostname on minikube

I have a statefulSet with two replicas. It's headless service name is "gov-svc" It's -> .metadata.name: sts .metadata.namespace: default .spec.serviceName: gov-svc .spec.template.spec.subdomain: gov-svc .spec.replicas: 2 Before running…
Shudipta Sharma
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Memcached Kubernetes Client Golang

I am attempting to connect to my memcached instance via golang. Both my app and Memcached will be in Kubernetes. I couldn't find a good way (or example) on how to dynamically discover memcached and ensure that it will update if the pods scale. I…
mornindew
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Kubernetes DNS Disk Utilization is High. Is there a way to tailor the logging to assist?

Can someone suggest what level of logging should be enabled for kube-dns and what parameters to use? My kube-dns pod is using 23GB of disk space and I fear its related to logging. Has anyone else seen this behavior?
Steveno
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Flannel pod failure (and DNS) for Kubernetes on CoreOS VMs

I have deployed a 3-node CoreOS Vagrant VMs following this guide, modified as described here. The VMs are healthy and running; K8s controller/worker nodes are fine; and I can deploy Pods; ReplicaSets; etc. However, DNS does not seem to work and,…
Marco Massenzio
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Config parameters / Command Line flags for kube-dns?

Where are kube-dns command-line / configmap parameters documented? I miss a short reference doc like the one here for kubernetes dashboard: https://github.com/kubernetes/dashboard/wiki/Dashboard-arguments I could (just) look into the code, but even…
Johan Thomsen
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kube-dns pods does not run when install with kops

I've setup a standalone k8s cluster using kops, so I want all pods running on only 1 master too. The cluster started well but kube-dns and kube-autoscaler pods does not running, it's in pending status. This is node describe kubectl describe…
Jin
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