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98 commits

Author SHA1 Message Date
Chris Telfer
147912afad Merge pull request #2132 from cziebuhr/2093-iface_order2 
Improve interface order
 2018-05-30 12:26:38 -04:00
Deep Debroy
20faf0adf0 Retry other external DNS servers on ServFail 
Signed-off-by: Deep Debroy <ddebroy@docker.com>
 2018-03-23 10:22:04 -07:00
Christoph Ziebuhr
6362d28969 Make go-tools happy 
Signed-off-by: Christoph Ziebuhr <chris@codefrickler.de>
 2018-03-21 10:31:56 +01:00
Deep Debroy
6a4c8d0ac9 Handle DNS querries of type MX 
Signed-off-by: Deep Debroy <ddebroy@docker.com>
 2017-12-20 14:32:47 -08:00
Madhu Venugopal
1662fc9709 Merge pull request #1856 from dmcgowan/update-logrus 
Update logrus to v1.0.1
 2017-08-08 14:01:10 -07:00
Derek McGowan
710e0664c4 Update logrus to v1.0.1 
Fix case sensitivity issue
Update docker and runc vendors

Signed-off-by: Derek McGowan <derek@mcgstyle.net>
 2017-08-07 11:20:47 -07:00
Sebastiaan van Stijn
7bd4fc1de4 Improve debugging for resolver 
This patch improves debugging for the resolver;

- prefix debug messages with `[resolver]` for easier finding in the daemon logs
- use `A` / `AAAA` for query-types in the logs instead of their numeric code
- add debug messages if the external DNS did not return a result
- print sucessful results (t.b.d.)

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
 2017-08-02 17:57:15 +02:00
Flavio Crisciani
af5e370627 Add gosimple check 
Add the gosimple tool check in the Makefile
Fix all the issues identified

Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
 2017-07-06 09:42:38 -07:00
Santhosh Manohar
6f507f53e3 Fix the data model inconsistency that breaks daemon upgrade to 1.14-dev 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2017-01-19 14:25:26 -08:00
Alessandro Boch
6dc6fb703b Merge pull request #1595 from sanimej/host 
Add support in embedded DNS server for host loopback resolver
 2017-01-05 12:18:48 -08:00
Santhosh Manohar
bf832ec2a7 Add embedded DNS server support for host loopback resolver 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-12-22 14:34:13 -08:00
Santhosh Manohar
879d94edbd Defer PTR queries to external servers based on A/AAAA response 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-12-20 14:45:13 -08:00
Santhosh Manohar
46b59b7964 Fix incorrect debug message 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-11-29 10:59:29 -08:00
Santhosh Manohar
94845a80f7 Serialize embedded resolver Start and Stop 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-11-21 11:08:41 -08:00
Daehyeok Mun
7f473c779a Refactoring logrus import and formatting 
This fix tries to fix logrus formatting by removing `f` from
`logrus.[Error|Warn|Debug|Fatal|Panic|Info]f` when formatting string
is not present.
Also fix import name to use original project name 'logrus' instead of
'log'

Signed-off-by: Daehyeok Mun <daehyeok@gmail.com>
 2016-11-08 12:42:41 -07:00
msabansal
7f43fd30f3 DNS support 
Signed-off-by: msabansal <sabansal@microsoft.com>
 2016-09-20 13:02:02 -07:00
Santhosh Manohar
db9a7021ac Drop queries in root doamin when ndots is set 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-09-12 14:25:05 -07:00
Santhosh Manohar
149af45509 Relax SRV name validation and fix external SRV query handling 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-08-14 11:27:07 -07:00
Santhosh Manohar
bd5051931f Fix external DNS responses > 512 bytes getting dropped 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-08-03 05:29:32 -07:00
Santhosh Manohar
44fabf5343 Remove UDP connection cachig in embedded DNS server 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-07-23 09:05:49 -07:00
Santhosh Manohar
b2603e895a Send truncated external responses to the client 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-07-23 02:56:31 -07:00
Santhosh Manohar
54f694c913 For cached connections ignore late replies after read timeout 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-06-13 23:50:02 -07:00
Santhosh Manohar
0051e39750 Add support for SRV query in embedded DNS 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-05-19 00:27:59 -07:00
Santhosh Manohar
088c3cafb2 Increase concucrrent query limit 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-04-18 19:55:19 -07:00
Jana Radhakrishnan
4d59574cb3 Merge pull request #1125 from sanimej/bugs 
Fix a panic in handling forwarded queries
 2016-04-22 08:57:32 -07:00
Santhosh Manohar
6a96717344 Fix a panic in handling forwarded queries 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-04-16 17:20:59 -07:00
Santhosh Manohar
61510dc222 Move the iptables setup for embedded DNS into a reexec process 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-04-15 23:37:20 -07:00
Jana Radhakrishnan
b0d046a1af Remove all netlink/osl deps from ipam/ipamutils 
Currently ipam/ipamutils has a bunch of dependencies
in osl and netlink which makes the ipam/ipamutils harder
to use independently with other applications. This PR
modularizes ipam/ipamutils into a standalone package
with no OS level dependencies.

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
 2016-04-10 11:05:39 -07:00
Jana Radhakrishnan
d81a91ebad Resolver sockets not flushed on default gw change 
Currently when the default gw changes because of
other network connections happening in the container
the resolver sockets are not flushed. This results
in a subsequent DNS failure for external queries

A sequence of connecting the container to an overlay
network and subsequently to a bridge network without
disconnecting from any network will result in this
behaviour. This was revealed by one of the libnetwork
IT tests.

This is now fixed as part of the commit by flushing
the external query sockets when a default gw change
is detected.

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
 2016-04-10 10:40:06 -07:00
Santhosh Manohar
5e4fa21005 Fix the panic when a query response comes after the read() timesout 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-04-07 19:36:06 -07:00
Santhosh Manohar
30d649c3e8 Fix the handling for concurrent queries over UDP 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-04-01 10:45:24 -07:00
Santhosh Manohar
bd0d8222aa Limit number of concurrent DNS queries 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-29 06:23:01 -07:00
Santhosh Manohar
ca06f1ed80 On network disconnect clear the cached connections to external 
nameservers

Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-20 05:00:58 -07:00
Santhosh Manohar
0c22e1bd07 Avoid V6 queries in docker domain going to external nameservers 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-19 03:07:08 -07:00
Santhosh Manohar
2e566e3882 Add AAAA record handling in embedded DNS server 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-16 19:00:17 -07:00
Santhosh Manohar
4e2e0f148b Fix nil pointer reference in ServeDNS() with concurrent go routines. 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-15 02:05:38 -07:00
Santhosh Manohar
9a91bbeb4f Clear cached udp connections on resolver Stop() 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-14 17:21:41 -07:00
Santhosh Manohar
51058eecec Implement DNS RR in the Docker embedded DNS server 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-03 09:33:10 -08:00
Santhosh Manohar
43e3da2f3a Source external DNS queries from container namespace 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-03-03 07:29:32 -08:00
Madhu Venugopal
577159e0cb Merge pull request #894 from sanimej/dns 
Set Recursion Available bit in query responses.
 2016-02-17 08:42:17 -08:00
Santhosh Manohar
2fb14185cb Add a check for invalid/junk messages 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-02-15 22:31:16 -08:00
Santhosh Manohar
cbb59adbd8 Set the compress flag for the responses from external DNS servers to 
avoid sending DNS replies > 512 bytes

Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-02-07 02:43:29 -08:00
Alessandro Boch
defcd4afb9 Change in programming iptables in container 
- iptables to provide a native API
- resolver.go to invoke the iptables native API
  when programming tables in the container

Signed-off-by: Alessandro Boch <aboch@docker.com>
 2016-02-05 15:25:43 -08:00
Santhosh Manohar
36fd9d02be Set Recursion Available bit in query response and reduce the ttl 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-01-24 05:46:47 -08:00
Madhu Venugopal
62b34aa361 Adding TCP listener for embedded DNS 
Signed-off-by: Madhu Venugopal <madhu@docker.com>
 2016-01-22 13:49:22 -08:00
Santhosh Manohar
30ef9bcf4a Retain V6 DNS server in resolv.conf; use only V4 servers for fallback 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-01-19 00:06:19 -08:00
Santhosh Manohar
05bd52dbb6 Setup embedded DNS server correctly on container restart 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-01-14 10:16:13 -08:00
Santhosh Manohar
cf7ed0a717 Embedded DNS server 
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
 2016-01-07 00:25:26 -08:00