i deleted the core dns using kubectl delete deployment coredns -n kube-system

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I accidentally deleted the core DNS using kubectl delete deployment coredns -n kube-system how to do I get the coredns pods to run again....

I recreated the coredns using kubectl create deployment coredns -n kube-system --image=k8s.gcr.io/coredns:1.7.0 but nslookup is failing is there any way to correct it. root@km1:~# kubectl get pods --all-namespaces -o wide
NAMESPACE     NAME                                       READY   STATUS    RESTARTS   AGE   IP              NODE   NOMINATED NODE   READINESS GATES
default       dnsutils                                   2/2     Running   9          22h   10.10.159.72    kw1    <none>           <none>
kube-system   calico-kube-controllers-5c6f6b67db-mp9jg   1/1     Running   2          26h   10.10.132.201   km1    <none>           <none>
kube-system   calico-node-fscgw                          1/1     Running   2          26h   192.168.0.215   km1    <none>           <none>
kube-system   calico-node-m78kx                          1/1     Running   1          25h   192.168.0.204   kw1    <none>           <none>
kube-system   coredns-5646d5bb85-77pxl                   1/1     Running   0          12m   10.10.159.74    kw1    <none>           <none>
kube-system   etcd-km1                                   1/1     Running   2          26h   192.168.0.215   km1    <none>           <none>
kube-system   kube-apiserver-km1                         1/1     Running   2          26h   192.168.0.215   km1    <none>           <none>
kube-system   kube-controller-manager-km1                1/1     Running   3          26h   192.168.0.215   km1    <none>           <none>
kube-system   kube-proxy-h5pz5                           1/1     Running   1          25h   192.168.0.204   kw1    <none>           <none>
kube-system   kube-proxy-qdp4w                           1/1     Running   2          26h   192.168.0.215   km1    <none>           <none>
kube-system   kube-scheduler-km1                         1/1     Running   3          26h   192.168.0.215   km1    <none>           <none>

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Matt On

Official coredns repo on github provides deploy.sh script that generates coredns yaml file. Checkout this link.

All you need to do is to clone the repo, go to deployment/kubernetes directory and run:

$ ./deploy.sh | kubectl apply -f -