批改 coredns cm
[root@master49 test]# kubectl get cm coredns -n kube-system -o yamlapiVersion: v1data: Corefile: | .:53 { errors health { lameduck 5s } ready kubernetes cluster.local in-addr.arpa ip6.arpa { pods insecure fallthrough in-addr.arpa ip6.arpa ttl 30 } prometheus :9153 #forward . /etc/resolv.conf forward . 192.168.6.242 ###批改这里即可 cache 30 reload loadbalance }kind: ConfigMapmetadata: creationTimestamp: "2020-12-21T02:23:59Z" managedFields: - apiVersion: v1 fieldsType: FieldsV1 fieldsV1: f:data: {} manager: kubeadm operation: Update time: "2020-12-21T02:23:59Z" - apiVersion: v1 fieldsType: FieldsV1 fieldsV1: f:data: f:Corefile: {} manager: kubectl operation: Update time: "2021-03-16T08:26:27Z" name: coredns namespace: kube-system resourceVersion: "23351960" selfLink: /api/v1/namespaces/kube-system/configmaps/coredns uid: 8d85909b-afe2-47ab-92c8-0a14059433d3[root@master49 test]# kubectl edit cm coredns -n kube-system
重启coredns
[root@master49 test]# kubectl get pod -n kube-systemNAME READY STATUS RESTARTS AGEcalico-kube-controllers-75d555c48-9z5ql 1/1 Running 5 85dcalico-node-2xt99 1/1 Running 4 85dcalico-node-8hd6s 1/1 Running 3 85dcalico-node-bgg29 1/1 Running 2 85dcalico-node-pq2pc 1/1 Running 2 85dcalico-node-rs77f 1/1 Running 4 85dcoredns-7ff77c879f-dkxcq 1/1 Running 0 8m38scoredns-7ff77c879f-vc262 1/1 Running 0 8m16setcd-master49 1/1 Running 5 85detcd-master50 1/1 Running 3 85detcd-master56 1/1 Running 17 85dkube-apiserver-master49 1/1 Running 0 54dkube-apiserver-master50 1/1 Running 0 54dkube-apiserver-master56 1/1 Running 0 54dkube-controller-manager-master49 1/1 Running 7 85dkube-controller-manager-master50 1/1 Running 5 85dkube-controller-manager-master56 1/1 Running 6 85dkube-proxy-4csh5 1/1 Running 5 85dkube-proxy-54pqr 1/1 Running 2 85dkube-proxy-h2ttm 1/1 Running 3 85dkube-proxy-nr7z4 1/1 Running 2 85dkube-proxy-xtrqz 1/1 Running 3 85dkube-scheduler-master49 1/1 Running 7 85dkube-scheduler-master50 1/1 Running 5 85dkube-scheduler-master56 1/1 Running 6 85dlog-pilot-2lzh2 1/1 Running 1 84dlog-pilot-4lrvr 1/1 Running 0 84dlog-pilot-9mj54 1/1 Running 0 84dlog-pilot-rwrzh 1/1 Running 1 84dlog-pilot-xs7mh 1/1 Running 1 84d[root@master49 test]# kubectl delete pod coredns-7ff77c879f-dkxcq -n kube-systempod "coredns-7ff77c879f-dkxcq" deleted[root@master49 test]# kubectl delete pod coredns-7ff77c879f-vc262 -n kube-systempod "coredns-7ff77c879f-vc262" deleted