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Plugin/Proxy - add new policy always_first to mimic windows dns resolvers (#1459)

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* add new policy always_first to mimic windows dns resolvers
fill documentation, add UT and cleanup fmt

* change name of policy from always_first to first. Update docs
This commit is contained in:
Francois Tur
2018-01-30 16:29:49 -05:00
committed by John Belamaric
parent 0af9b9b16f
commit b93a36b213
4 changed files with 44 additions and 6 deletions
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4
plugin/proxy/README.md
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@@ -25,7 +25,7 @@ However, advanced features including load balancing can be utilized with an expa
~~~
proxy FROM TO... {
policy random|least_conn|round_robin
policy random|least_conn|round_robin|first
fail_timeout DURATION
max_fails INTEGER
health_check PATH:PORT [DURATION]
@@ -39,7 +39,7 @@ proxy FROM TO... {
* **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.
random, least_conn, round_robin or first. 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 2 seconds ("2s").