修改coredns 新增加dns 内容
$ kubectl get cm coredns -n kube-system -o yaml
apiVersion: v1
data:
Corefile: |
.:53 {
errors
health
hosts /etc/coredns/Hosts {
fallthrough
}
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
upstream
fallthrough in-addr.arpa ip6.arpa
}
prometheus :9153
forward . /etc/resolv.conf
cache 30
loop
reload
loadbalance
}
Hosts: |
172.24.119.223 news-graphql.xy.huijitrans.com
172.24.119.223 tgbus-live.xy.huijitrans.com
172.24.119.223 tgbus-comment.xy.huijitrans.com
172.24.119.223 tgbus-user.xy.huijitrans.com
172.24.119.223 graphql.xy.huijitrans.com
172.24.119.223 tgbus-api.xy.huijitrans.com
172.24.119.101 k8s-master01.gdfsxxds.rjyun master01
172.24.119.102 k8s-master02.gdfsxxds.rjyun master02
172.24.119.103 k8s-master03.gdfsxxds.rjyun master03
172.24.119.223 k8s-node01.gdfsxxds.rjyun node01
172.24.119.224 k8s-node02.gdfsxxds.rjyun node02
172.24.119.225 k8s-node03.gdfsxxds.rjyun node03
172.24.119.226 k8s-node04.gdfsxxds.rjyun node04
172.24.119.252 k8s-harbor01 k8s-harbor01.gdfsxxds.rjyun
192.168.8.11 mysql-178-fs189
kind: ConfigMap
metadata:
creationTimestamp: "2019-08-20T04:48:50Z"
name: coredns
namespace: kube-system
resourceVersion: "56953316"
selfLink: /api/v1/namespaces/kube-system/configmaps/coredns
uid: cd9f9802-c305-11e9-8099-b8ca3a60e5c8
2. 修改 deployment coredns
kubectl edit deployment coredns -n kube-system
volumes:
- configMap:
defaultMode: 420
items:
- key: Corefile
path: Corefile
- key: Hosts 新增加 hosts 配置内容
path: Hosts
name: coredns
name: config-volume
3. coredns pod 会自动重新部署
$ kubectl get pod -n kube-system |grep dns
coredns-c7b458cf-spkv7 1/1 Running 0 6m15s
coredns-c7b458cf-wpjjq 1/1 Running 0 6m15s