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Update README.md (#1607)

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Chris O'Haver
2018-03-13 16:33:11 -04:00
committed by John Belamaric
parent c8d9150079
commit e5beb9dbfc
1 changed files with 5 additions and 4 deletions
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9
plugin/kubernetes/README.md
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@@ -193,13 +193,14 @@ feature enables serving federated domains from the kubernetes clusters.
Some query labels accept a wildcard value to match any value. If a label is a valid wildcard (\*,
or the word "any"), then that label will match all values. The labels that accept wildcards are:
* _service_ in an `A` record request: _service_.namespace.svc.zone, e.g. `*.ns.svc.myzone.local`
* _namespace_ in an `A` record request: service._namespace_.svc.zone, e.g. `nginx.*.svc.myzone.local`
* _endpoint_ in an `A` record request: _endpoint_.service.namespace.svc.zone, e.g. `*.nginx.ns.svc.cluster.local`
* _service_ in an `A` record request: _service_.namespace.svc.zone, e.g. `*.ns.svc.cluster.local`
* _namespace_ in an `A` record request: service._namespace_.svc.zone, e.g. `nginx.*.svc.cluster.local`
* _port and/or protocol_ in an `SRV` request: __port_.__protocol_.service.namespace.svc.zone.,
e.g. `_http.*.service.ns.svc.`
e.g. `_http.*.service.ns.svc.cluster.local`
* multiple wild cards are allowed in a single query, e.g. `A` Request `*.*.svc.zone.` or `SRV` request `*.*.*.*.svc.zone.`
* Wildcard can be used also to resolve PODs IPs as `A` records in a Service with ClusterIP. e.g.: `*.service.ns.svc.myzone.local` will return the PODs IPs as the following:
For example, Wildcards can be used to resolve all Endpoints for a Service as `A` records. e.g.: `*.service.ns.svc.myzone.local` will return the Endpoint IPs in the Service `service` in namespace `default`:
```
*.service.default.svc.cluster.local. 5 IN A 192.168.10.10
*.service.default.svc.cluster.local. 5 IN A 192.168.25.15