Commit graph

1271 commits

Author SHA1 Message Date
varyoo
45b0252c1a plugin/dnstap: don't spam Travis + valid dnstap payload (#1121)
* don't spam Travis + valid dnstap payload

* log instead of fmt

* Revert "log instead of fmt"

This reverts commit 88f09c3939.

* log the right way

* log the final way

* minor enhancements
2017-09-29 20:29:33 +01:00
Miek Gieben
1e71d0e2c1 plugin/cache: don't cache msg with TTL=0 in them (#1116)
Don't cache these - may be lead to weird side effects.

Fixes #1113
2017-09-28 14:22:23 +01:00
Miek Gieben
44a0cb9557 test: fix zone file (#1112)
* test: fix zone file

Add missing $TTL 3600 as the top.

Recent change in Go DNS made this mandatory - old behavior wasn't
standards compliant.

* and here
2017-09-26 19:41:49 +01:00
varyoo
daf8ef0da8 Adds the dnstap I/O routines and should fix some issues (#1083)
* adds the dnstap I/O thread and should fix a lot of mistakes

* docs

* -race test

* oops

* docs
2017-09-26 11:45:33 -04:00
Miek Gieben
2a32cd4159 plugin/proxy: decrease health timeouts (#1107)
Turn down the timeouts and numbers a bit:
FailTimeout 10s -> 5s
Future 60s -> 12s
TryDuration 60s -> 16s
The timeout for decrementing the fails in a host: 10s -> 2s

And the biggest change: don't set fails when the error is Timeout(),
meaning we loop for a bit and may try the same server again, but we
don't mark our upstream as bad, see comments in proxy.go. Testing this
with "ANY isc.org" and "MX miek.nl" we see:

~~~
::1 - [24/Sep/2017:08:06:17 +0100] "ANY IN isc.org. udp 37 false 4096" SERVFAIL qr,rd 37 10.001621221s
24/Sep/2017:08:06:17 +0100 [ERROR 0 isc.org. ANY] unreachable backend: read udp 192.168.1.148:37420->8.8.8.8:53: i/o timeout

::1 - [24/Sep/2017:08:06:17 +0100] "MX IN miek.nl. udp 37 false 4096" NOERROR qr,rd,ra,ad 170 35.957284ms

127.0.0.1 - [24/Sep/2017:08:06:18 +0100] "ANY IN isc.org. udp 37 false 4096" SERVFAIL qr,rd 37 10.002051726s
24/Sep/2017:08:06:18 +0100 [ERROR 0 isc.org. ANY] unreachable backend: read udp 192.168.1.148:54901->8.8.8.8:53: i/o timeout

::1 - [24/Sep/2017:08:06:19 +0100] "MX IN miek.nl. udp 37 false 4096" NOERROR qr,rd,ra,ad 170 56.848416ms
127.0.0.1 - [24/Sep/2017:08:06:21 +0100] "MX IN miek.nl. udp 37 false 4096" NOERROR qr,rd,ra,ad 170 48.118349ms
::1 - [24/Sep/2017:08:06:21 +0100] "MX IN miek.nl. udp 37 false 4096" NOERROR qr,rd,ra,ad 170 1.055172915s
~~~

So the ANY isc.org queries show up twice, because we retry internally -
this is I think WAI.

The `miek.nl MX` queries are just processed normally as no backend is
marked as unreachable.

May fix #1035 #486
2017-09-24 20:05:36 +01:00
Miek Gieben
148a99442d healhcheck: various cleanups (#1106)
* healhcheck: various cleanups

Network wasn't used. IgnorePaths wasn't used. Move checkdown function to
common function shared between proxy protocols. And some naming fixed.

Also reset the Fails on a succesful healthcheck back to 0.

remove newlines from log

* compile

* fix test
2017-09-24 19:37:43 +01:00
Yong Tang
102cfbd7fe Use gometalinter and enforcing go fmt/lint/vet (#1108)
* Use gometalinter and enforcing go fmt/lint/vet

Before this PR go fmt is enabled, go lint is suggest only.
From time to time we have to manually check for go lint and go vet
for any issues.

This fix uses gometalinter and enforcing go fmt/lint/vet.
Several reasons:
- gometalinter could handle multiple linters concurrently
- gometalinter supports suppression with `// nolint[: <linter>]`

Previously one reason we didn't enable go lint was due to the
```
warning: context.Context should be the first parameter of a function (golint)
```
this is now possible with gometalinter and `// nolint: golint` (See changes).

This fix also discovered several go vet issues and fixes it.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix several issues reported by gometalinter (go vet)

This commit fixes several issues reported by gometalinter (go vet).

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Increase deadline

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2017-09-24 11:59:04 +01:00
Yong Tang
387ceb480b go lint/vet/misspell cleanup (#1105)
This fix address several issues related to golint/vet/misspell.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2017-09-22 16:13:04 -07:00
John Belamaric
6f19dda0b4 Fix autopath crash when pods verified not enabled (#1099) 2017-09-21 18:06:35 +01:00
Miek Gieben
284061eee7 pkg: add dnstest (#1098)
Add a full test server impl in this new package + tests. Move
dnsrecorder into this package as well and finish up the commented out
tests that were left in the old dnsrecorder package.

Update all callers and tests.
2017-09-21 15:15:47 +01:00
Yong Tang
7109c6715c Add inline support for middleware/hosts (#1072)
This fix add inline support for middleware/hosts so that
it is possible to specify hosts file insides the Corefile:
```
hosts inline example.org {
    10.0.0.1 example.org
    fallthrough
}
```

This fix fixes 999.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2017-09-21 04:18:13 -07:00
Damian Myerscough
aecf916377 Fixing a small typo (#1097) 2017-09-21 07:22:13 +01:00
Thong Huynh
ec21f83425 Modify the rewrite plugin to write multiple EDNS0 options (#936) (#1096)
* Add processing mode

* Add processing mode

* Update UTs

* Update README.md

* Change to use the constant Stop

* Fix README per review comments
2017-09-20 16:06:53 -04:00
Miek Gieben
36c7aa6437 plugin/{file,auto}: drop fsnotify (#1090)
* plugin/{file,auto}: drop fsnotify

Reload every minute. This is more deterministic then fsnotify. Also
other thing cropped up: sharing zone files between zone; there is only
1 fsnotify event and we need to fan out the reload to all zone files.
This is a large rewrite (which could still be done), for now, poll the
zone file on disk.

Give serial no change a special error type so we can check for this.
Improve the logging for reloading:

2017/09/19 07:34:39 [INFO] Successfully reloaded zone "miek.nl." in "db.miek.nl" with serial 128263060
2017/09/19 07:34:45 [INFO] Successfully reloaded zone "miek.nl." in "db.miek.nl" with serial 128263059
2017/09/19 07:34:51 [INFO] Successfully reloaded zone "miek.nl." in "db.miek.nl" with serial 128263060

Fixes #1013

* typo
2017-09-20 17:28:23 +01:00
Miek Gieben
cd5879f866 plugin/cache: cap TTL on first answer (#1092)
Cache would let the first response through and would then cap subsequent
ones to whatever the cache duration was. This would lead to huge drops
in TTL values: 3600 -> 20 for instance, which is not only bad, but can
mess up your careful TTL planning business.

This PR fixes that and applies the cache duration to all replies. As a
bonus I could remove a time.Sleep() from the cache test and just check
for the cache duration as the TTL on the reply.

Fixes #1038
2017-09-20 11:36:41 +01:00
Miek Gieben
be47709270 More Middleware -> Plugin conversions (#1088)
Forgot about these.
2017-09-16 14:13:28 +01:00
Yong Tang
c79a4769e4 golint cleanup (#1085)
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2017-09-15 23:34:02 +01:00
Miek Gieben
2388e36c2c plugin: README.md updates (#1084)
updates so the look better on coredns.io
2017-09-15 22:27:55 +01:00
Miek Gieben
19d7d207d3 Make proxy examples better (#1080) 2017-09-15 11:30:10 +01:00
Miek Gieben
ae9cae67e3 plugins: expand examples (#1077)
* plugins: expand examples

Expand some examples and test them by annotating it with `corefile`

* Can't start kubernetes

* Can test pprof :(
2017-09-15 09:56:05 +01:00
Miek Gieben
d8714e64e4 Remove the word middleware (#1067)
* Rename middleware to plugin

first pass; mostly used 'sed', few spots where I manually changed
text.

This still builds a coredns binary.

* fmt error

* Rename AddMiddleware to AddPlugin

* Readd AddMiddleware to remain backwards compat
2017-09-14 09:36:06 +01:00