74 lines
1.5 KiB
Markdown
74 lines
1.5 KiB
Markdown
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>本文作者：丁辉
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# Kubernetes内配置域名解析
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## 更改 Coredns 配置
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> 不同部署方式的集群可能 Coredns 配置文件的名称也不同, 需要按照自身集群情况修改
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>
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> ```bash
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> kubectl get cm -n kube-system | grep coredns
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> ```
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1. 备份原配置
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```bash
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kubectl get cm coredns -n kube-system -o yaml > /root/coredns.yaml
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```
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2. 编辑 Yaml 文件
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```bash
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kubectl edit cm -n kube-system coredns
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```
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添加如下内容
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```yaml
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apiVersion: v1
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data:
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Corefile: |
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.:53 {
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errors
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health {
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lameduck 5s
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}
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ready
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kubernetes cluster.local in-addr.arpa ip6.arpa {
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pods insecure
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fallthrough in-addr.arpa ip6.arpa
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}
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#加这一段
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#---------------------------
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hosts {
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192.168.1.10 www.demo.com
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fallthrough
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}
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#---------------------------
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prometheus :9153
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#forward . 192.168.1.10 #或者在这里添加DNS
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forward . "/etc/resolv.conf"
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cache 30
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loop
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reload
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loadbalance
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} # STUBDOMAINS - Rancher specific change
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kind: ConfigMap
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···
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```
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3. 重启集群内所有 Coredns 立即生效
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> 当然这在生产并不可取, 尽量让他自行生效, 但过程较慢
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- Rke集群
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```bash
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kubectl delete pod -l k8s-app=kube-dns -n kube-system
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```
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- 其他集群待写
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