====== 針對 K8s 環境內定義類似 /etc/hosts 方式 ======
  * 以下是在 rancher 下的設定方式
  * Clusters(已經建立的 Cluster) -> System
    * Resources -> Config -> Namespace: kube-system -> 	coredns -> Edit
    * Corefile 的內容改成類似以下: <file>
.:53 {
    errors
    health {
      lameduck 5s
    }
    ready
    kubernetes cluster.local in-addr.arpa ip6.arpa {
      pods insecure
      fallthrough in-addr.arpa ip6.arpa
    }
    prometheus :9153
    forward . "/etc/resolv.conf"
    cache 30
    loop
    reload
    loadbalance
    hosts iiidevops.tw {
      192.168.7.101 www.iiidevops.tw
      192.168.7.101 gitlab.iiidevops.tw
      192.168.7.101 redmine.iiidevops.tw
      192.168.7.101 harbor.iiidevops.tw
      192.168.7.101 sonarqube.iiidevops.tw
      fallthrough
    }
}
</file>
    * Save 存檔就可以立即生效

===== 參考網址 =====
  * https://medium.com/@hjrocha/add-a-custom-host-to-kubernetes-a06472cedccb
  * https://linux-rtdocs.readthedocs.io/en/latest/k8s/coreDNS%E6%B7%BB%E5%8A%A0%E9%9D%99%E6%80%81DNS%E7%9A%84%E6%96%B9%E6%B3%95/

{{tag>coredns rancher k8s}}