kube-dns

I have a Kubernetes PetSet with name == elasticsearch and serviceName == es . It does create pods and, as expected, they have names like elasticsearch-0 and elasticsearch-1 . However, DNS does not seem to be working. elasticsearch-0.es does not resolve (nor does elasticsearch-0.default , etc.). If you look at the generated srv records they seem to be random instead of predictable: # nslookup -type=srv elasticsearch Server: 10.1.0.2 Address: 10.1.0.2#53 elasticsearch.default.svc.cluster.local service = 10 100 0 9627d60e.elasticsearch.default.svc.cluster.local. Anyone have any ideas? Details

I have setup my kubernetes cluster from scratch following this doc: https://kubernetes.io/docs/getting-started-guides/scratch/ My kubernetes master and worker are working correctly, but I didn't find the instruction to deploy dns addons. Addons can be deployed through yaml files as well as using the addon manager . I have already installed dashboard , monitoring , DNS manually using the yaml files provided (with small modifications) in this repo . Please note addon-manager is pretty special, You should copy all files into a directory then: ./kube-addons.sh Btw I prefer installing addons

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 checked my coredns logs and saw below entries : .:53 2018/10/16 12:31:45 [INFO] CoreDNS-1.2.2 2018/10/16 12:31:45 [INFO] linux/amd64, go1.11, eb51e8b CoreDNS-1.2.2 linux/amd64, go1.11, eb51e8b 2018/10/16 12:31:45 [INFO] plugin/reload: Running configuration MD5 = 06122de1a2d6c43092ab48d05478dc82 2018/10/16 12:44:27 [ERROR] 2 google.com. A: unreachable

I have installed a Kubernetes with Kubeadm tool, and then followed the documentation to install the Web UI (Dashboard). Kubernetes is installed and running in one node instance which is a taint master node. However, I'm not able to access the Web UI at https://<kubernetes-master>/ui . Instead I can access it on https://<kubernetes-master>:6443/ui . How could I fix this? The URL you are using to access the dashboard is an endpoint on the API Server. By default, kubeadm deploys the API server on port 6443 , and not on 443 , which is what you would need to access the dashboard through https

Can someone please detail the steps necessary to install the kube-dns addon? I've downloaded the nearly 400MB git repo in the previous link and run make as instructed but get Nothing to be done for 'all'. The docs aren't clear what form add-ons exist in, and how to install them. The "Administrators guide" link there takes me to this unhelpful page. I've tried https://stackoverflow.com/a/42315074/4978821 , but got an error validating data message. Even if this worked, it seems like it'd be an unofficial and awkward solution. Answers like this are also too vague: https://stackoverflow.com/a

I deployed a few VMs using Vagrant to test kubernetes: master: 4 CPUs, 4GB RAM node-1: 4 CPUs, 8GB RAM Base image: Centos/7. Networking: Bridged. Host OS: Centos 7.2 Deployed kubernetes using kubeadm by following kubeadm getting started guide . After adding the node to the cluster and installing Weave Net, I'm unfortunately not able to get kube-dns up and running as it stays in a ContainerCreating state: [vagrant@master ~]$ kubectl get pods --all-namespaces NAMESPACE NAME READY STATUS RESTARTS AGE kube-system etcd-master 1/1 Running 0 1h kube-system kube-apiserver-master 1/1 Running 0 1h kube