coredns解析集群node节点

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k8s_node

Name

k8s_node - resolves node hostname and node IPs from Kubernetes clusters.

Description

This plugin resolves node external IP and internal IP address(es) of Kubernetes clusters.
This plugin is only useful if the kubernetes plugin is also loaded.

The plugin resolve node IP addresses. It only handles queries for A and AAAA records;
all others result in NODATA responses.

Syntax

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k8s_node

If you want to change the apex domain or use a different TTL for the returned records you can use
this extended syntax.

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k8s_node {
    ttl TTL
}
  • ttl allows you to set a custom TTL for responses. The default is 5 (seconds).

Examples

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. {
   kubernetes cluster.local
   k8s_node
}

With the Corefile above, the following Service will get an A record for vm10-0-10-80.ksc.com with the IP address 10.0.10.80.

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status:
  addresses:
  - address: 10.0.10.80
    type: InternalIP
  - address: vm10-0-10-80.ksc.com
    type: Hostname

Bugs

PTR queries for the reverse zone is not supported.

Also See

source code
docker image