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Add option to parse resolv.conf for proxy upstreams (#353)

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* Add option to parse resolv.conf for proxy upstreams

* Add test and README update for resolv.conf proxy

* Run gofmt
This commit is contained in:
John Belamaric
2016-10-22 10:52:10 -04:00
committed by Miek Gieben
parent a2bd9ad3f5
commit 6d9d60081d
3 changed files with 125 additions and 4 deletions
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10
middleware/proxy/README.md
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@@ -30,7 +30,7 @@ proxy FROM TO... {
~~~
* **FROM** is the name to match for the request to be proxied.
* **TO** is the destination endpoint to proxy to. At least one is required, but multiple may be specified.
* **TO** is the destination endpoint to proxy to. At least one is required, but multiple may be specified. To may be an IP:Port pair, or may reference a file in resolv.conf format
* `policy` is the load balancing policy to use; applies only with multiple backends. May be one of random, least_conn, or round_robin. Default is random.
* `fail_timeout` specifies how long to consider a backend as down after it has failed. While it is down, requests will not be routed to that backend. A backend is "down" if CoreDNS fails to communicate with it. The default value is 10 seconds ("10s").
* `max_fails` is the number of failures within fail_timeout that are needed before considering a backend to be down. If 0, the backend will never be marked as down. Default is 1.
@@ -86,3 +86,11 @@ proxy . backend:1234 {
except miek.nl example.org
}
~~~
Proxy everything except example.org using the host resolv.conf nameservers:
~~~
proxy . /etc/resolv.conf {
except miek.nl example.org
}
~~~