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    • MengZeLee's avatar
      patch setup (#2675) · 44056615
      MengZeLee authored 
      * patch setup

Use a more streamlined grammar

* fix break

No need to break out in this for loop
      44056615
  21. 15 Mar, 2019 1 commit
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  31. 08 Mar, 2019 5 commits
    • Miek Gieben's avatar
      plugin/health: remove ability to poll other plugins (#2547) · c778b3a6
      Miek Gieben authored 
      * plugin/health: remove ability to poll other plugins

This mechanism defeats the purpose any plugin (mostly) caching can still
be alive, we can probably forward queries still. Don't poll plugins,
just tell the world we're up and running.

It was only actually used in kubernetes; and there specifically would
mean any network hiccup would NACK the entire server health.

Fixes: #2534
Signed-off-by: default avatarMiek Gieben <miek@miek.nl>

* update docs based on feedback
Signed-off-by: default avatarMiek Gieben <miek@miek.nl>
      c778b3a6
    • Miek Gieben's avatar
      Add *ready* plugin (#2616) · db0b16b6
      Miek Gieben authored 
      Add a ready plugin that allows plugin to signal when they are ready.
Once a plugin is ready it is not queried again.

This uses same mechanism as the health plugin: each plugin needs to
implement an interface.

Implement readines for the *erratic* plugin to aid in testing.

Add README.md and tests moduled after the health plugin; which will be
relegated to just providing process health. In similar vein to health
this is a process wide setting.

With this Corefile:
~~~
. {
    erratic
    whoami
    ready
}

bla {
    erratic
    whoami
}
~~~

ready will lead to:

~~~ sh
% curl localhost:8181/ready
% dig @localhost -p 1053 mx example.org
% curl localhost:8181/ready
OK%
~~~

Meanwhile CoreDNS logs:

~~~
.:1053
bla.:1053
2019-02-26T20:59:07.137Z [INFO] CoreDNS-1.3.1
2019-02-26T20:59:07.137Z [INFO] linux/amd64, go1.11.4,
CoreDNS-1.3.1
linux/amd64, go1.11.4,
2019-02-26T20:59:11.415Z [INFO] plugin/ready: Still waiting on: "erratic"
2019-02-26T20:59:13.510Z [INFO] plugin/ready: Still waiting on: "erratic"
~~~

*ready* can be used in multiple server blocks and will do the right
thing; query all those plugins from all server blocks for readiness.
This does a similar thing to the prometheus plugin.
Signed-off-by: default avatarMiek Gieben <miek@miek.nl>
      db0b16b6
    • Miek Gieben's avatar
      Remove internal loop detection (#2647) · 2b7e84a0
      Miek Gieben authored 
      * Remove internal loop detection

I can't actually think of a situation where we can create an internal
loop. Sure externally triggered cycles can happen, but this is where the
*loop* plugin comes in that detects those.

Fixes #2602
Signed-off-by: default avatarMiek Gieben <miek@miek.nl>

* Remove test
Signed-off-by: default avatarMiek Gieben <miek@miek.nl>
      2b7e84a0
    • Ruslan Drozhdzh's avatar
      plugin/errors: remove cLogger and eLogger (#2657) · 18d305f4
      Ruslan Drozhdzh authored
      18d305f4
    • Xiao An's avatar
      Add deprecation notice for NO_RELOAD (#2643) · 89a4b9bd
      Xiao An authored 
      Signed-off-by: default avatarXiao An <hac@zju.edu.cn>
      89a4b9bd