i have been trying to setup k8s in a single node,everything was installed fine. but when i check the status of my kube-system pods, CNI -> flannel pod has crashed, reason -> Nameserver limi...

I'm running Kubernetes 1.11, and trying to configure the Kubernetes cluster to check a local name server first. I read the instructions on the Kubernetes site for customizing CoreDNS, and used the ...

What happened Resolving an external domain from within a pod fails with SERVFAIL message. In the logs, i/o timeout error is mentioned. What I expected to happen External domains should be successfu...

I have a running k8s cluster with two replicas of CoreDNS. But when i try enter the bash prompt of the POD it's throwing me below error # kubectl exec -it coredns-5644d7b6d9-285bj -n kube-system sh...

Here is the issue: We have several microk8s cluster running on different networks; yet each have access to our storage network where our NAS are. within Kubernetes, we create disks with an nfs-prov...

I want to change ndots default value from 5 to 3 in all pods in Kubernetes. for example, this is the current resolv.conf output from one of my pods. How can I change the value of ndots from 5 to 3 ...

I have a pretty standard installation of Kubernetes running as a single-node cluster on Ubuntu. I am trying to configure CoreDNS to resolve all internal services within my Kubernetes cluster and SO...

I am trying to make my kubernetes cluster pull from a container registry service running inside itself. I have kube dns setup, I have a registry deployment and service running. I can resolve the se...

I understand that this question is asked dozen times, but nothing has helped me through internet searching. My set up: CentOS Linux release 7.5.1804 (Core) Docker Version: 18.06.1-ce Kubernetes...

I am new to k8 and I am learning how DNS works inside a k8 cluster. I am able to get the contents of /etc/resolv.conf of a random pod in the default namespace but I am unable to get the contents /e...

I have a following problem with CoreDNS from master (also see ready is 0/1 on master): E0321 22:54:45.590231 1 reflector.go:126] pkg/mod/k8s.io/[email protected]+incompatible/tools/cache/refl...

I have a CoreFile configutation like this .:53 { errors health { lameduck 5s } ready kubernetes cluster.local in-addr.arpa ip6.arpa { pods insecure fallthrough in-addr.arpa ip6.arpa ttl 30...

How to flush CoreDNS Cache on kubernetes cluster? I know it can be done by deleting the CoreDNS pods, but is there a proper way to to the cache flush ?

I've followed a number of online tutorials to set up a Kubernetes cluster on four Raspberry Pi 4s. I ended up using Flannel as the networking plugin as that seems to be the only one that actually w...

My Environment: OS - CentOS-8.2 Kubernetes Vesion: Client Version: v1.18.8 Server Version: v1.18.8 I have successfully configured Kubernetes cluster (One master & one worker), But currently wh...

I have setup a Kubernetes cluster with one master (kube-master) and 2 slaves (kube-node-01 and kube-node-02) All was running fine ... now after debian stretch -> buster upgrade my coredns pods a...

I am having spring boot app where in application.property we are specifying below properties. kafka is installed on remote machine with self-signed certificate (outside the kubernete cluster). cam...

I installed fresh kubernetes single node cluster and I see 2 coredns pods running. One of them is failing (not part of this question) Why they are 2 of them?

I'm trying to set up the Kubernetes master, by issuing: kubeadm init --pod-network-cidr=192.168.0.0/16 followed by: Installing a pod network add-on (Calico) followed by: Master Isolation ...

I'm trying to setup a Kubernetes cluster, but I cannot get CoreDNS running. I've ran the following to start the cluster: sudo swapoff -a sudo sysctl net.bridge.bridge-nf-call-iptables=1 sudo kubea...

i use Kubernetes v1.11.3 ,it use coredns to resolve host or service name,but i find in pod ,the resolve not work correctly, # kubectl get services --all-namespaces -o wide NAMESPACE NAME TYPE CLUS...

I have deployed a Kubernetes cluster composed of a master and two workers using kubeadm and the Flannel network driver (So I passed the --pod-network-cidr=10.244.0.0/16 flag to kubeadm init). Thos...

We have a Kubernetes cluster with 1 master and 3 nodes managed by kops that we use for our application deployment. We have minimal pod-to-pod connectivity but like the autoscaling features in Kuber...

Kubernetes ships with a ConfigMap called coredns that lets you specify DNS settings. I want to modify or patch a small piece of this configuration by adding: apiVersion: v1 kind: ConfigMap data: ...

I have kubernetes cluster running on Ubuntu 16.04. When I run nslookup kubernetes.default on master it shows below: Server: 192.168.88.21 Address: 192.168.88.21#53 ** server can't find kubernetes...